Selection of filter fabric for neutralization slag filtration in wet zinc smelting

As for which specific model of filter cloth to choose, you can consult the filter press manufacturers; if necessary, they can assist you with material testing. Some filter press manufacturers now have testing equipment available for free use. I know that Jingjin filter presses are available.

The selection of filter cloth is quite important, with two main criteria to consider: filtration time and filtration speed. For substances that are difficult to filter, it is necessary to take both of these parameters into account in order to reduce the initial investment in equipment

For lead dust, 750B is better; it has a denser fabric structure and is suitable for filtering dust leachate residues.

Reply to 4# che123: The 621 produced by Jingjin will do; glue application is required

Subscription available for \"Comprehensive Collection of Papers on Zinc Smelting\" – China’s first comprehensive monograph on zinc smelting. A 30-year review: technologies and experiences, equipment and apparatus, domestic and international aspects, history and future. Recently, the compilation of \"Comprehensive Collection of Papers on Zinc Smelting\", carried out by the editorial team of \"China Nonferrous Metallurgy\" under the China Nonferrous Engineering Design Institute (China ENFI Engineering Technology Co., Ltd.), has been completed, and the book is now officially published. This collection is China’s first anthology to provide a comprehensive overview of zinc smelting technologies and equipment; it represents one of the most thorough and systematic works on zinc smelting technologies and related equipment in China’s history. This collection brings together all the papers on zinc smelting published in \"China Nonferrous Metallurgy\" over the past 30 years, covering all processes involved in zinc smelting: 1. Pyrometallurgical processes such as the ISP process, shaft furnace zinc smelting, and electric furnace zinc smelting; 2. Hydrometallurgical processes including conventional methods, high-acid leaching methods (sulfate/potassium/sodium/ammonium iron vanadate method, low-pollution sulfate/potassium/sodium/ammonium iron vanadate method, spray iron removal method), and direct leaching methods (high-pressure leaching, atmospheric pressure leaching). The collection is divided into ten main sections: Foreign Language Translations, Reviews, Roasting, Acid Production, Pyrometallurgical Zinc Smelting, Hydrometallurgical Zinc Smelting (leaching, liquid purification, electrolysis, casting, zinc-based alloys), Comprehensive Recovery and Utilization, Treatment of Polluted Acid Wastewater, Treatment of Low-Concentration Flue Gas, and Equipment. It provides a comprehensive overview of the technological advancements, updates to equipment and machinery, development of large-scale projects, as well as the process of introducing and localizing large-scale equipment in China’s zinc smelting industry over the past 30 years ； Through this series of translations from foreign languages, one can gain insight into the progress of advanced technologies around the world, as well as the 30-year development history of large foreign enterprises. It also provides information on the latest technological applications in the past five years and the future trends in technology development. This is a valuable collection of technical papers that combines technology and experience, equipment and apparatus, domestic and international aspects, history and the future, as well as processes and outcomes – truly a collection worth preserving! This complete collection has approximately 1,500 pages beautifully bound. Contact person of the editorial department of China Nonferrous Engineering Design and Research Institute.: Zhou Wei’s phone number: 13401045724 "Complete Collection of Zinc Smelting Papers" Table of Contents 1 Current status of zinc smelting in my country Technological development in recent years 2 Review of 70 years of vertical tank zinc smelting in Huludao Zinc Plant 3 Progress and prospects of acid production from smelting flue gas in my country 4 Progress of lead-zinc closed blast furnace smelting technology in the past 10 years 5 Review of contemporary vertical tank zinc smelting technology 6 Prospects for technological development of lead and zinc in the 1980s 7 Progress in zinc smelting technology at home and abroad 8 Technology research and development prospects of Zhuzhou Smelting Group Co., Ltd. 9 Direction and measures for technological progress of Zhuzhou Smelting Plant 10 Technological innovation practice of Zhuzhou Smelting 11 Current situation and development of my country's indium industry 12 Review and outlook of the 10th anniversary of the commissioning of the zinc system of the Northwest Lead-Zinc Smelting Plant 13 Brief analysis of the 100,000 ton zinc expansion project of the Zhuzhou Smelting Plant 14 Evaluation of the hydrometallurgical zinc smelting technology of the Belgian Laoshan Company 15 my country's zinc oxide industry 16 Progress of advanced zinc oxide extraction technology 17 Development status and prospects of germanium-containing lead oxide zinc ore resources in Guizhou 18 Thirty years of Shenyang Shenyang hydrometallurgical zinc smelting Chapter 2 Boiling roasting 1 Progress of my country's zinc concentrate boiling roasting technology 2 Fluidizing furnace reduction continuous zinc smelting method 3 Experimental research on zinc roasting reduction roasting process 4 Oxygen-rich blast boiling roasting of zinc concentrate 5 Boiling roasting of zinc concentrate and treatment of leaching slag 6 Thermodynamic research and basic experiments of new method of smelting zinc roasting 7 New process for boiling roasting of zinc concentrate and zinc oxide production 8 RPC sulfation roasting process 9 Recent improvements in roasting and acid-making workshops 10 Review of Zhuye 109㎡ boiling furnace and sulfuric acid system production 11 Application of micro-oxygen enrichment technology in boiling roasting furnace 12 Production practice to avoid SO2 flue gas exhaust pollution during the opening process of zinc concentrate boiling roasting furnace 13 Discussion and practice on the optimization method of raw material batching system in zinc metallurgical enterprises Part 3: Fire-based zinc smelting ISP method, vertical tank zinc smelting method, electric furnace zinc smelting method, other fire-based zinc smelting methods) 3.1 ISP method 1 Technical transformation of Shaoyang lead-zinc closed blast furnace I system 2 Discussion on the application of lead-zinc closed blast furnace tuyere injection technology 3 Brief analysis of the current situation and development of ISP process in Shaoguan smelting plant 4 Production practice of closed blast furnace zinc smelting method in Shaoguan smelting plant 5 Talking about the metal recovery rate of lead-zinc closed blast furnace 6 Transformation of the second-system sintering process of Shaoguan smelting plant 7 Production practice of extending the overhaul cycle of ISP process 8 Production practice of extending the cleaning cycle of lead-zinc closed blast furnace system 9 Quality control of zinc oxide production 10 Production and classification of rectified condensed zinc powder 11 Distribution and behavior of arsenic smelting in the lead-zinc closed blast furnace of Shaoyi 3.2 Vertical tank zinc smelting 12 Prospects of the vertical tank distillation zinc smelting method 13 Production practice of extra large vertical tank stills 14 Discussion on the mixing ratio of roasted sand and secondary roasting sand in the vertical tank zinc smelting process 15 Analysis of ways to strengthen the production of vertical tank zinc smelting 16 Production practice of the double vertical tank distillation furnace renovation project of Changsha Zinc Plant 17 Discussion of reducing coal blending technology for vertical tank zinc smelting 18 Vertical tank zinc smelting technology of West Deok Plant 19 Zinc distillation tower produces high-grade zinc oxide 20 Refined zinc production practice 3.3 Electric furnace zinc smelting 21 Electric furnace zinc smelting process practice and discussion 22 Electric furnace zinc smelting production practice and technical improvement 23 Production practice to prevent iron accumulation at the bottom of zinc smelting electric furnace 24 Production process analysis of zinc electric heating distillation furnace 25 Development and application of 2500KVA zinc smelting electric furnace 26 Improvement practice of zinc smelting electric furnace splash condenser 27 Production practice of extending zinc smelting electric furnace life 3.4 Other methods 28 New zinc oxide ore fire treatment process - iron bath smelting reduction method 29 Zinc ingot reverberatory furnace method to produce zinc powder practice 30 Brief analysis of the preparation and use of ultra-fine and highly active zinc powder 31 Experimental research on using tailings to produce zinc oxide powder 32 Discussion on ash control of zinc oxide products produced by direct method 33 Thermodynamic equilibrium calculation of injection zinc smelting 34 Improvement of injection zinc smelting method 35 Several issues in the production of zinc oxide by distillation 36 Distillation process modification of 10,000 tons of zinc oxide per year - refined zinc 37 Direct reduction of sulfide ore with carbon and lime 38 Measures for covering the zinc liquid level during zinc refining 39 Industrial test of zinc fire refining with aluminum and iron removal 40 Using distillation method to improve the grade of zinc oxide products 41 Advanced zinc oxide production practice in Xingcheng smelting plant 42 Production practice of ultra-fine zinc powder 43 Production of fine zinc powder 44 Improvement of zinc oxide baking powder process 45 Zinc distillation tower gas supply was interrupted for 15 hours to resume the production process 46 Powder plating (infiltration) zinc technology and application Chapter 4 Wet zinc smelting 4.1 Leaching 4.1.1 Conventional leaching method 1 Analysis and countermeasures of acid balance in wet zinc smelting 2 Wet treatment of high silicon zinc oxide ore 3 Research on the impact of flocculants on electrolytic zinc production 4 Treatment method of high silicon zinc concentrate 5 Research on the leaching and desiliconization process of high silicon zinc oxide ore 6 Trial production of the leaching process of the new electrolytic zinc plant 7 On the improvement of the two-stage neutral intermittent leaching process of electrolytic zinc 8 Production practice and technical improvement of zinc roasting sand leaching 9 Improvement of primary leaching residue filtration efficiency 10 Technical transformation of the zinc oxide zinc smelting system of Zhuzhou smelter 11 Behavior and role of iron in Zhuzhou hydrometallurgical zinc smelting 12 Practice of hydrosmelting high-germanium-zinc raw materials 4.1.2 High-acid leaching method 13 Application of spray precipitation iron removal process 14 Production practice of reducing zinc content in leaching slag 15 Practice of processing high-silicon raw materials in the leaching workshop of Northwest Lead-Zinc Smelting Plant 16 Research on the process of replacing part of the calcined sand with zinc oxide ore in hydro-zinc smelting 17 Production practice of hot acid leaching jarosite process 18 Hot acid leaching - improvement and practice of jarosite process 19 Technical development of using hot acid leaching to treat flue dust 20 Using low-pollution yellow alum to improve metal recovery rate 21 Low-pollution alum deposition from the perspective of cooling tower crystallization 22 Behavior of impurities in the zinc smelting process of jarosite method 23 Research on new iron removal process of hydrometallurgical zinc 24 Oxidation technology of goethite iron removal process 25 Oxidation process of goethite-precipitated iron in zinc sulfate solution 4.1.3 Direct leaching method 26 Experimental study on pressure leaching of copper-zinc mixed ore 27 Dynamic study of Fe during pressure leaching of high-iron sphalerite 4.1.4 Other methods 28 Study on hydrogen peroxide iron removal method in zinc scum acid leaching solution 29 Process study on zinc oxide production of electro-zinc in lead fume path 30 Review of fluoride removal during zinc oxide wet treatment 31 Experimental study on zinc oxide dechlorination of tailings 32 Transformation of zinc sulfate production process 33 Production practice of using ammonium bicarbonate transformation agent to prepare active zinc oxide 34 Production of high-purity zinc by zinc baking ammonia method 35 Production practice of superior zinc sulfate monohydrate 36 Preparation of ultra-pure zinc sulfate 4.2 pure liquid using ion exchange method 37 Application of two-stage high-temperature antimony salt process in Yazd zinc smelting plant in Iran 38 Research and application of zinc powder replacement for cobalt removal 39 Purification of zinc sulfate solution 40 Practice of transformation of zinc sulfate solution purification process 41 Selection of zinc sulfate solution purification process 42 Improvement practice of zinc sulfate purification process 43 Production practice of two-stage high-temperature antimony salt purification to remove cobalt from high-cobalt zinc sulfate solution 44 Transformation of antimony salt cobalt removal process in electro-zinc production 45 Constraints and countermeasures of two-stage reverse antimony continuous purification of northwest lead and zinc smelting plant 46 Problems and improvement measures for antimony salt purification of zinc sulfate solution 47 Zhuye Zinc Solution Purification and Zinc Powder Saving Approach 48 Production Practice of Cobalt Removal from Zinc Antimony Salt Zinc Powder by Hydrometallurgy 49 Production Practice of Two-stage Air Oxidation Neutralization to Remove Arsenic and Antimony in Hydrometallurgy of Zinc 50 Application of Three-stage Purification Process in Hydrometallurgy of Zinc in Our Plant 51 Distribution and Control of Cobalt in Hydrometallurgy of Zinc 52 Industrial Practice of Removing Arsenic from Zinc Sulfate Solution 53 New Priority Zinc Precipitation Method to Control the Balance of Impurities and Water 54 Control of zinc hydrolysis in the purification process 55 Vibration purification method of zinc sulfate solution 56 Experiment and production of β-naphthol cobalt removal from zinc wet smelting 57 Practice to improve the liquid-solid-liquid separation effect after copper and cadmium removal from zinc smelting 58 Effect of zinc powder particle size on unit consumption in zinc sulfate solution purification to remove cobalt 59 Research on cobalt removal from cadmium-poor liquid in wet zinc smelting process 60 Application practice of several antimony salt purification methods 4.3 Electrowinning 61 Design theory and practice of modern zinc electrolysis workshop 62 Optimization of zinc electrolysis workshop 63 Use of zinc cathode in zinc electrolysis 64 Electric energy saving in zinc electrolysis process 65 Exploration and practice of zinc electrolysis to reduce electricity consumption and improve zinc grade rate 66 Rationalization of zinc electrolysis process 67 Automatic detection method and device for zinc electrolyte quality 68 Simultaneous electrolysis of MnO2 and zinc under high current efficiency 69 Discussion on the current efficiency of MnO2 precipitation from zinc electrowinning anode 70 Transformation of the electrolyte circulation and cooling system of Zhuzhu Smelting 71 Flash cooling of zinc electrolyte 72 Industrial test of zinc electrowinning acid mist control 73 Production practice to improve the rate of first-grade zinc electrolysis 74 The influence of certain impurities on zinc electrolysis 75 Characteristics of the influence of antimony on zinc electrolysis 76 The influence of organic matter on zinc electrolysis and the selection of organic additives 77 Research on the influence of bone glue additives on zinc electrolysis 78 The role of manganese in zinc electrolysis 79 The hazards and preventive measures of germanium in the zinc electrolysis process 80 Organization and technical management of the zinc electrolysis workshop during trial production 81 Small-scale tests of zinc chloride electrolysis using traditional electrolytic cells 82 Several noteworthy issues in the design of silicon rectifiers in the zinc electrolysis workshop 83 Application of low silver lead calcium alloy anodes in the zinc electrolysis industry 84 Discussion on the reasons for the high energy consumption of zinc electrolytic lap joint method and the improvement and development of cathode conductive head 4.4 Melting and casting 85 Research and production practice on improving the quality of zinc ingot bottom surface 86 Modernization of zinc ingot casting 87 Improvement of zinc ingot mold of disc ingot casting machine 88 Furnace type selection for 100,000 tons zinc melting and casting workshop 89 Process design of zinc melting and casting workshop 90 Production practice of large ingot zinc alloy for hot dipping 91 Hot-dip galvanizing production practice 92 Melting and casting of metal cadmium Chapter 5 Acid production 1 Research on improving the quality of sulfuric acid in smelters 2 Acid production practice from roasted zinc concentrate flue gas 3 Operation practice of 36Kt smelting flue gas acid production unit 4 A brief discussion on the technical transformation of the acid production system of the smelting plant of Baiyin Company 5 Discussion of the acid concentration control method in the dry suction section 6 Boliton method to control mercury in sulfuric acid 7 Practice of mercury removal process transformation in Northwest Lead and Zinc Smelter 8 An innovative method for treating high-concentration SO2 smelting flue gas in sulfuric acid plant 9 Heat recovery in sulfuric acid plant 10 Waste heat utilization in the roasting and acid-making process 11 About power saving in sulfuric acid plant 12 Shaoguan lead-zinc sintering machine two-turn and two-absorption acid-making process for low-concentration flue gas 13 The practice of starting up the zinc concentrate boiling roasting tail gas acid-making system to prevent SO2 pollution Chapter 6 Dust collection and environmental protection 1 Current status and development prospects of sulfuric acid production in Huludao Zinc Plant 2 Comprehensive utilization practice of purified polluted acid 3 Zinc leaching residue volatilization kiln treatment flue gas dust collection 4 Zhuzhou smelting plant zinc powder manufacturing powder collection system modification 5 Zinc concentrate boiling roasting flue gas dust collection design and practice 6 Zinc volatilization kiln bag dust collection and ash cleaning technology 7 Zinc system flue gas acidification wastewater treatment Chapter 7 Comprehensive recovery and utilization 1 Vertical tank zinc smelting residue as fuel Use Ausmelt technology to treat zinc leaching residue process discussion 2 Flotation method to enrich silver from zinc leaching residue 3 Behavior of silver in the hydrometallurgical zinc smelting process 4 Treatment of hydrometallurgical zinc leaching slag by low blast furnace method 5 New method for enrichment and recovery of arsenic and mercury fume 6 Production of No. 1 electric zinc from complex and changeable zinc raw materials 7 Improvement of silver recovery from zinc leaching slag 8 Comprehensive recovery and utilization of pyrometallurgical zinc smelting distillation residue 9 Transformation of the treatment process of leaching slag in existing large electrozinc plants with hematite method 10 Improvement of the cobalt slag treatment process for hydrometallurgical zinc purification 11 Rational utilization of dilute acid in zinc smelting plants 12 Recovering zinc from zinc oxide ore leaching residue using solvent extraction method 13 Recovering precious metals from zinc leaching residue 14 Recovering cadmium from high-cadmium zinc 15 Production practice of crude cadmium distillation in Huludao Zinc Plant 16 Industrial test of producing high-quality cadmium by vacuum distillation of crude cadmium 17 Production practice of vortex furnace smelting distillation residue 18 Recovery issues of precious metals in the process of zinc and lead smelting in closed blast furnace 19 The semi-blast furnace method is used to treat zinc leaching slag, vertical pot slag and other zinc-containing materials to extract gold and silver 20 Zinc recovery from pharmaceutical zinc acetate waste residue 21 Recycling of zinc in flue dust 22 Recovering zinc from zinc ash and flue dust using hydrometallurgical methods 23 Production practice of continuous blowing of zinc slag fumeation furnace 24 Recovering zinc sulfate heptahydrate from copper cadmium slag from hydrometallurgy zinc smelting 25 Further improving the recycling status of cadmium 26 Production method of photosensitive cadmium sulfide 27 Improvement of Zhuzhou smelting cadmium production process 28 Production of electric cadmium from low-grade sponge cadmium 29 Measures to improve the quality of crude cadmium 30 Improvement of the process of producing refined cadmium from high-zinc cadmium 27 Extraction of cadmium from zinc concentrate roasting electrostatic dust 28 Recovery of silver and scattered elements in Zhuzhou smelting plant 29 Preliminary discussion on improving the indium recovery rate in our plant 30 A brief discussion on the recovery of indium in the comprehensive utilization of soot 31 Indium recovery methods and process improvements in our factory 32 Research on improving the quality of refined indium 33 A brief discussion on the problems and treatment of crystallization emulsification and organic phase aging in the process of centrifugal indium extraction 34 Development of ultra-fine indium oxide powder 35 Enrichment of indium in zinc distillation systems 36 Optimization of process conditions for recovery of indium from vertical tank zinc smelting coke dust 37 Comparison of two processes for enriching indium from zinc sulfate solution 38 Experimental study on comprehensive recovery of indium, germanium, lead and silver from zinc slag leaching residue 39 New process for recovering germanium by extraction 40 Changes and prospects of germanium recovery technology in Zhuye 41 Recovery of germanium as a by-product in the zinc smelting process 42 Emulsification and elimination in the process of solvent extraction of germanium 43 Development of comprehensive germanium recovery technology in Shaoguan 44 Production Practice of Recovering Germanium in Distillation Tower 45 Producing Sodium Metabisulfite from Boiling Roasting SO2 Flue Gas of Zinc Concentrate 46 Research on Defluoridation of Zinc Casting Scum Part 8 Related Equipment 8.1 Various Smelting Furnaces and Kilns 1 Current Situation and Sealing Structure of Lead-Zinc Blast Sintering Machine 2 Renovation of Shaoyel Lead-Zinc Blast Furnace Furnace Shell 3 Technical Renovation of Shaoyel Lead-Zinc Sealed Blast Furnace 4 Renovation Practice of Fluidizing Roasting Furnace 5 Production technology transformation of boiling roasting equipment 6 Discussion on the production and welding of 109㎡ boiling roasting furnace air distribution plate 7 Transformation of lead-zinc closed blast furnace scum treatment equipment 8 Transformation practice of lead-zinc closed blast furnace charging device 9 Practice of transformation of lead-zinc closed blast furnace system equipment lining masonry 10 Improvement practice of zinc vertical pot distillation furnace Cheyenne brick jacket 11 Development and application of zinc rectification furnace flat tray 12 Effective measures to improve the quality of zinc distillation furnace masonry 13 Improvement of the combustion chamber of Shaoyi tower zinc distillation furnace 14 Design calculation of small zinc distillation furnace 15 Application of two-stage gas generator in vertical tank zinc smelting 16 Development of retractable electrode sealing device for smelting electric furnace 17 Discussion on the service life of zinc smelting electric arc furnace refractory materials 18 Handling of freezing furnace accidents in power frequency fused zinc electric furnaces 19 Induction electric furnaces and applications for zinc alloy processing 20 Discussion on transformation plan of power frequency induction electric furnace 21 Research and application of power frequency cored fused zinc electric furnace inductor refractory materials 22 Practice of extending the life of zinc leaching slag volatilization kiln 23 Improvement of zinc smelting electric furnace condensation equipment 24 Optimization of zinc leaching slag volatilization kiln processing system 25 Improvement of rotary kiln processing leaching slag operation 26 Selection and practice of lining bricks for zinc leaching slag volatilization kiln 8.2 Dust collection and acid making equipment 27 Renovation practice of tubular dust collector 28 my country’s first 13㎡ four-electric field needle tube electrostatic precipitator was put into operation in Chifeng Smelting Plant 29 13㎡ needle tube electrostatic precipitator technology and application 30 Improvement of sulfur dioxide blower inlet and outlet pipelines 31 Design and selection of electrostatic precipitator insulators 32 Application of Monsanto power wave washing technology in the flue gas acid purification process of nonferrous metal smelting plants 33 Application of HF-resistant acid mortar in empty towers for smelting acid production 8.3 Distillation equipment (4 articles) 34 Several technical modifications of zinc distillation towers 35 Research on new methods to detect the quality of zinc distillation trays 36 Self-release of zinc distillation tower pressure 37 Development and application of large-scale distillation trays 8.4 Reactor (kettle) and electrolytic cell 38 Oxidation reactor used to treat zinc leaching residue by goethite method 39 Using boiling reactor to purify zinc electrolyte 40 Autoclave selection in hydrometallurgy 41 Using vibrating reactor to remove cadmium from the net liquid 42 Anti-corrosion technology in hydrometallurgy and mechanization of electrolytic tank trenching 43 Optimal design of zinc electrolytic tank side busbar 8.5 Dense stirring and filtration equipment 44 Regarding the proportional amplification of stirring operations 45 Review of leaching slag filtering equipment for zinc smelting 46 Dehydration of zinc leaching slag with fully automatic squeeze filter press 47 About the selection of hydrometallurgical filtration equipment 48 Improvement of hydrometallurgical slag filtration process equipment and research and development of filter press products 49 High-efficiency thickener 50 Fault analysis and countermeasures for thickener use 51 Application of PF-25 flip-plate vacuum filter in wet zinc oxide industry 8.6 Stripper 53 Development of new zinc stripper 52 Cathode zinc stripping practice - transportation of zinc stripper and electrode plates 8.7 Boiler 55 Technical transformation of zinc roasting waste heat boiler 56 Application of waste heat boiler in recovery of waste heat from boiling roasting of zinc concentrate 57 Comparison of zinc roasting waste heat boilers between Japan's Kawasaki and Finland's Ahlstrom 8.8 Cooling tower 58 YBF-X zinc electrolyte cooling tower 59 Renovation ideas for air cooling tower in electrolysis workshop 60 Zinc electrolyte air cooling tower has significant energy saving 61 Improvement of zinc electrolyte cooling tower 8.9 Other equipment 62 Summary of the main results of the technical transformation of electromechanical equipment in Zhuzhou smelting plant 63 Development and application of wetted ball mill 64 Effect of switching to vibrating motor for ore discharge in batching warehouse 65 Application of quaternary alloy anode plate in hydrometallurgical zinc smelting 66 Research and application of zinc electroplating lead-based quaternary alloy anode 67 Application of viscosity measurement in hydrometallurgical zinc smelting Chapter 9 Foreign Literature 9.1 Review 1 The latest experience in modern zinc processing technology 2 The smelting of foreign zinc oxide ores 3 The development of the Balun Zinc Plant of the Belgian Laoshan Company in the past ten years 4 Recent production status of Akita Zinc Refinery 5 Zinc smelting at Akita Smelter 6 The past, present and future of application of computer operation at Iijima Refinery 7 Lead-zinc smelting at Kamioka Mining Co., Ltd. 8 Current status of zinc production at Mitsui Mining and Metallurgy Company 9 Zinc and lead smelting transformation at Hachinohe Smelter 10 Current status of roasting, sulfuric acid equipment and zinc oxide production at the Onahama smelter11 Zinc smelting transformation at Nippon Mining and Zinc Corporation12 Technical transformation at the Japanese lead and zinc smelter13 Technical transformation at the Japanese lead and zinc smelter (continued) 14 Zinc production at Rockenhill United Smelting Co., Ltd., Port Pirie, South Australia15 Latest developments at the zinc plant of the Hudson Bay Mining and Smelting Company16 Modernization and expansion of the Trail lead and zinc smelter in Canada17 Chid Creek (Timmins) zinc plant expansion with the latest technology 18 Comparison of energy consumption in modern zinc production 19 Modernization of the Terrell zinc system and lead smelting at Cominco 20 Problems at the Comincotrell plant remain unresolved 9.2 Boiling roasting 21 Recent process improvements in the Kokkola zinc roaster 22 Boiling roasting of zinc concentrates from the Australian Wriston plant 23 Boiling roasting of zinc concentrates from Laoshan, Belgium and flue gas acid production 9.3 Pyrometallurgical zinc smelting 24 Direct smelting of oxide materials in zinc blast furnaces 25 Electrowinning method of zinc at American Smelting and Refining Company 26 Werner process for pyrometallurgical zinc smelting (English) 27 Watt zinc smelting method 28 Australian Sulphide Company's Kirkland Creek lead-zinc smelter 29 Modernization of Monaca electrothermal zinc smelting plant in the United States 30 Research on spray zinc smelting 31 Akita zinc refinery produces various zinc alloys 32 Direct smelting of oxide materials in zinc smelting blast furnace 33 Research on zinc distillation process 34 Preparation of zinc powder by electrothermal smelting and distillation method of zinc slag 35 Production of zinc oxide by distillation 36 Production practice of high-grade zinc oxide at Huludao Zinc Plant 37 Zinc chloride production 38 Several issues in the production of zinc oxide by distillation 9.4 Hydrometallurgical zinc smelting 39 Zinc electrolysis workshop of Laoshan Company's Balun Zinc Plant 40 Recent production status of South African Zinc Company's smelting plant 41 Renovation of Datlen electro-zinc plant 42 Solution purification of Laoshan Company of Belgium 43 Zinc electrowinning of Laosan Company of Belgium 44 Experience in utilizing leaching slag in the electro-zinc plant of Ruhr Zinc Company 45 Selective precipitation zinc method for water balance and magnesium control in electrolytic zinc plants 46 Several improvements in the zinc electrolysis process of Akita smelter 47 Energy saving in the zinc electrolysis process of Iijima smelter 48 Progress of the leaching process of Iijima smelter 49 Transformation of zinc electrolysis at Kamioka smelter 50 Recent improvements in Kamioka zinc electrolysis workshop 51 Liquid purification process at Outokumpu Kokkola zinc plant 52 Cominco’s new electrolytic zinc plant 53 Economic Cooperation * * Technical transformation of hydrometallurgical zinc 54 Electrolytic zinc in Port Pirie, South Australia 55 Zinc production at the Risden plant of the Australian Electrozinc Company 56 New electrolytic zinc plant in Port Vismarck, Italy 57 Pressure leaching production practice of Cominco's Traer zinc plant 58 Leaching and purification of Cominco's Traer zinc plant 59 Commissioning of the Hudson Bay Sherite zinc pressure leaching process into operation 60 Pressurized oxidation leaching of zinc concentrate 61 Production practice and development trend of pressure leaching method of Sherritt Zinc Company 62 Pressure leaching process of zinc concentrate 63 Analysis of pressure leaching process of zinc concentrate 64 Preparing zinc by solvent extraction-electrolysis method 65 Removing iron from sulfuric acid solution using thermal precipitation method 66 The role of iron precipitation in hydrometallurgy 68 Lucci Company's technological development in hydrometallurgy 9.5 Comprehensive utilization 69 Treatment of leaching residue of Laoshan Company in Belgium 70 Cadmium production at the Australian Electrozinc Company's Risden plant in Tasmania 71 Removal of copper by solvent extraction from high copper solutions in the zinc sulfate system 72 Cadmium production at Sulphide Co., Ltd.'s Kirk Kerrick plant in New South Wales 73 Cadmium vacuum distillation refining at the Norden Line Zinc Plant in West Germany 9.6 Others 74 Zinc smelting at the Iijima smelter 75 Recent production at the Iijima zinc refinery 76 Finished zinc processing at the Old Mountain Company in Belgium 77 Energy requirements of the Sherritt zinc smelting process 78 Production of zinc powder by hydraulic atomization 79 Characteristics and problems of the spray zinc smelting method 80 Characteristics and problems of the spray zinc smelting method 81 Production of battery zinc powder and amalgamated zinc powder by the spray method 82 Energy saving at Hikoshima Electro-Zinc Plant 83 Japan's "Spray Zinc Smelting" test results report 84 Control of mercury in the Australian Electro-Zinc Company 85 Design of the world's largest smelting flue gas acid plant 86 Production of Recycled Zinc in my country 87 Practical contact person for processing zinc smelting intermediate materials in continuous feeding rotary furnace: Zhou Wei’s phone number: 13401045724

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