Thread Content
Our plant utilizes a lead-zinc closed blast furnace. A relatively large amount of miscellaneous materials is used in the batching process, accounting for about 35%. This often results in a low sinter productivity, which has a significant negative impact on the blast furnace as well. How to solve it?
Which unit do you work for? Why are you still using sintering machines? There are many reasons for poor clumping in sintering machines; it’s not necessarily a problem with the slag material
I haven’t heard of any other sintering plants anywhere
Does anyone understand? I also learn*learn*
The \"Comprehensive Collection of Papers on Zinc Smelting\" consists of over 400 papers in 1,200 pages; it is beautifully bound. The original price is 980 yuan per set, but it is now available at a discounted price of 380 yuan per copy, including shipping costs. Please place your orders as soon as possible. Contact QQ 262532319 and indicate the reason for your request. Contact numbers: 010-63481447 and 13520518006. For related catalogs, visit: http://www.168yj.com. The \"Comprehensive Collection of Papers on Zinc Smelting\" is China’s first collection of papers that provides a comprehensive overview of zinc smelting technologies and equipment. This compilation brings together all papers related to zinc smelting published in “Nonferrous Metallurgy of China” over the past 30 years. It covers all processes involved in zinc smelting: 1. Pyrometallurgical processes, such as the ISP process, the vertical retort zinc smelting process, and the electric furnace zinc smelting process ; 2. Wet process: conventional methods, high-acid leaching methods (sulfate/potassium/sodium/ammonium iron vanadium method, low-pollution sulfate/potassium/sodium/ammonium iron vanadium method, spray iron removal method), and direct leaching methods (high-pressure leaching method, normal-pressure leaching method). This collection is divided into ten major sections: foreign language translations, reviews, roasting, acid production, pyrometallurgical zinc smelting, hydrometallurgical zinc processing (leaching, liquid purification, electrolysis, casting, zinc-based alloys), comprehensive recovery and utilization, treatment of acidic wastewater, treatment of low-concentration flue gas, and equipment and apparatus. It provides a comprehensive overview of the technological advancements, equipment upgrades, large-scale project development, 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 articles 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! "Complete Collection of Zinc Smelting Papers" Table of Contents 1. The current situation of zinc smelting in my country and the technological development in recent years 2. A review of 70 years of vertical tank zinc smelting in Huludao Zinc Plant 3. The progress and prospects of acid production from smelting flue gas in my country 4. The progress of lead-zinc closed blast furnace smelting technology in the past 10 years 5. Review of contemporary vertical tank zinc smelting technology 6. The technological development prospects of lead and zinc in the 1980s 7. The progress of zinc smelting technology at home and abroad 8. Technology research and development prospects of Zhuzhou Smelting Group Co., Ltd. 9. The direction and measures of technological progress of Zhuzhou Smelting Plant 10. Zhuzhou Smelting Technology Innovation Practice\ 11. Current status 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 100,000t 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 hydrometallurgical zinc smelting Part 2 Boiling roasting 1. Progress of boiling roasting technology of zinc concentrate in my country 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 residue 6. Thermodynamic research and basic experiments on the new method of smelting zinc roasting 7. New processes for zinc concentrate boiling roasting 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. Shao Smelting lead-zinc closed blast furnace I system technical transformation 2. Discussion on the application of lead-zinc closed blast furnace tuyere injection technology 3. Brief analysis of the current situation and development of the 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 ISP process overhaul cycle 8. Production practice of extending the cleaning cycle of the 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 distillation furnace 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 on coal blending technology of reduced coal for vertical tank zinc smelting 18. Vertical tank zinc smelting technology of West Germany Ocker Plant 19. Production of high-grade zinc oxide by zinc distillation tower 20. Refined zinc production practice 3.3 Electric furnace zinc smelting 21. Practice and discussion of electric furnace zinc smelting process 22. Production practice and technical improvement of electric furnace zinc smelting 23. Production practice of preventing iron accumulation at the bottom of zinc smelting electric furnace 24. Analysis of the production process of zinc electrothermal 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 study on the production of zinc oxide powder from tailings 32. Discussion on ash content control of zinc oxide products produced by direct method 33. Calculation of thermodynamic balance of zinc smelting by blowing 34. Improvement of blowing zinc smelting 35. Several issues in producing zinc oxide by distillation 36. Transformation of the distillation process of zinc oxide-refined zinc with an annual output of 10,000 tons 37. Direct reduction of sulfide ore with carbon and lime 38. Measures to cover the zinc liquid level during zinc refining 39. Industrial test of zinc fire refining and aluminum removal of iron 40. Improving the grade of zinc oxide products by distillation 41. Production practice of advanced zinc oxide 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 Hydrometallurgical zinc smelting 4.1 Leaching 4.1.1 Conventional leaching method 1. Analysis and countermeasures of acid balance in zinc smelting 2. Wet treatment of high silicon zinc oxide ore 3. Research on the impact of flocculants on electrolytic zinc production 4. Treatment methods of high silicon zinc concentrate 5. Research on leaching desiliconization process of high silicon zinc oxide ore 6. Trial production of the leaching process of a new electrolytic zinc plant 7. Discussion on the improvement of the two-stage neutral intermittent leaching process of electrolytic zinc 8. Production practice and technical improvement of zinc baking sand leaching 9. Improvement of primary leaching slag filtration efficiency 10. Technical transformation of zinc oxide zinc smelting system in Zhuzhou smelter 11. Behavior and role of iron in Zhuzhou smelting zinc hydrometallurgy 12. Practice of wet smelting of high-germanium-zinc raw materials 4.1.2 High acid leaching method 13. Application of leaching precipitation iron removal process 14. Production practice of reducing zinc content in leaching slag 15. The practice of processing high-silicon raw materials in the leaching workshop of the northwest lead and zinc smelting plant 16. Research on the process of replacing part of the calcined sand with zinc oxide ore in hydrometallurgical zinc smelting 17. Production practice of the acid leaching jarosite process 18. Improvement and practice of the hot acid leaching-jarosite process 19. Technical development of using hot acid leaching to treat smoke dust 20. Using low-pollution jarosite to improve metal recovery rate 21. Low-pollution precipitated vitriol seen from cooling tower crystallization 22. Behavior of impurities in the jarosite zinc smelting process 23. Research on new iron removal process for hydrometallurgical zinc smelting 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 zinc mixed ore 27. Study on the kinetics of Fe during pressure leaching of high-iron sphalerite 4.1.4 Other methods 28. Study on the iron removal method of hydrogen peroxide in scum acid leaching solution 29. Process study on the production of electric zinc from zinc oxide in the lead fumigation pass 30. Overview of fluoride removal during zinc oxide wet treatment 31. Experimental study on dechlorination of zinc oxide in tailings 32. Transformation of zinc sulfate production process 33. Production practice of preparing activated zinc oxide using ammonium bicarbonate transformation agent 34. Production of high-purity zinc by zinc baking ammonia method 35. Production practice of high-grade zinc sulfate monohydrate 36. Preparation of ultra-pure zinc sulfate 4.2 pure liquid by ion exchange method 37. Application of 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 modification 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 salt continuous purification in northwest lead-zinc smelting plant 46. Problems and improvement measures for antimony salt purification of zinc sulfate solution 47. Ways to purify zinc solution and save zinc powder at Zhuzhou Smelting 48. Production practice of cobalt removal from antimony salt zinc powder in hydrometallurgy 49. Two-stage air oxidation neutralization to remove arsenic, production practice of antimony in hydrometallurgy 50. Application of three-stage purification process in hydrometallurgy of zinc in our factory 51. Distribution and control of cobalt in hydrometallurgy zinc smelting 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 during purification process 55. Vibration purification method of zinc sulfate solution 56. Experiment and production of beta-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 for purification of zinc sulfate solution to remove cobalt 59. Research on cobalt removal from cadmium-poor liquid during zinc wet smelting 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 reducing electricity consumption and improving zinc grade rate in zinc electrolysis 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 zinc electrolyte circulation and cooling system of Zhuzhou 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 electrolytic zinc 74. The influence of certain impurities on zinc electrolytic deposition 75. Characteristics of the influence of antimony on zinc electrolytic deposition 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 during zinc electrolysis 80. Organization and technical management of zinc electrolysis workshop during trial production 81. Small-scale test of zinc chloride electrolysis using traditional electrolytic cells 82. Several noteworthy issues in the design of silicon rectifier in zinc electrolysis workshop 83. Application of low silver-lead-calcium alloy anode in zinc electrolysis industry 84. Discussion on the reasons for high energy consumption of zinc electrolysis lap joint method and improvement and development of cathode conductive head 4.4 Melting and casting 85. Research and production practice of high 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 smelting and casting workshop 90. Production practice of large ingot zinc alloy for hot-dip galvanizing 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 smelting plants 2. Production practice of acid production from roasted zinc concentrate flue gas 3. Operation practice of 36Kt smelting flue gas acid production unit 4. Brief discussion on the technical transformation of the acid production system of Baiyin Company's smelting plant 5. Discussion on the control method of acid concentration in the dry suction section 6. Control of mercury in sulfuric acid by Boliton method 7. Reformation practice of mercury removal process in northwest lead-zinc smelting plant 8. An innovative method for treating high-concentration SO2 smelting flue gas in sulfuric acid plant 9. Heat recovery in sulfuric acid plant 10. Utilization of waste heat in roasting acid-making process 11. About power saving in sulfuric acid plant 12. Shaoguan lead-zinc sintering machine low-concentration flue gas two-turn-two-absorption acid-making process reformation 13. Practice of starting up the zinc concentrate boiling roasting tail gas acid production 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. Research on bag dust collection and cleaning technology of zinc volatilization kiln 7. Treatment of Flue Gas Acid Production Wastewater from Zinc System Part 7 Comprehensive Recycling and Utilization 1. Discussion on the process of treating zinc leaching slag using the vertical tank zinc smelting residue as fuel and using Ausmelt technology 2. Experiments on enriching silver from zinc leaching slag using flotation method 3. Behavior of silver in the wet zinc smelting process 4. Treatment of wet zinc smelting leaching slag by short blast furnace method 5. New method for enrichment and recovery of arsenic and mercury smoke 6. Production of No. 1 electric zinc from complex and changeable zinc raw materials 7. Improvement of silver recovery from zinc leaching residue 8. Comprehensive recovery and utilization of pyrozinc smelting distillation residue 9. Transformation of the leaching residue treatment process of existing large-scale electro-zinc plants using hematite method 10. Improvement of cobalt slag treatment process for hydrometallurgical zinc smelting 11. Rational utilization of dilute acid in zinc smelting plants 12. Recovery of zinc from zinc oxide ore leaching residue using solvent extraction method 13. Recovery of precious metals from zinc leaching residue 14. Recovery of 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 and distillation residue 18. Recovery of precious metals during zinc and lead smelting in closed blast furnace 19. Use semi-blast furnace method to process zinc leaching slag, vertical tank slag and other zinc-containing materials to extract gold and silver 20. Recovery of zinc 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 fumigation furnace 24. Recovering zinc sulfate heptahydrate from copper cadmium slag in hydrometallurgical zinc smelting 25. Further improving the current situation of cadmium recycling 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 31. Extraction of cadmium from zinc concentrate roasting electric dust 32. Recovery of silver and scattered elements in Zhuzhou smelting plant 33. Preliminary discussion on improving the recovery rate of indium in our plant 34. Brief discussion on the recovery of indium in comprehensive utilization of soot 35. Indium recovery method and process improvement in our factory 36. Research on improving the quality of refined indium 37. Brief discussion on the problems and treatment of crystallization emulsification and organic phase aging during centrifugal indium extraction process 38. Development of ultra-fine indium oxide powder 39. Enrichment of indium in zinc distillation system 40. Optimization of process conditions for recovering indium from vertical tank zinc smelting coke dust 41. Comparison of two processes for enriching indium from zinc sulfate solution 42. Experimental study on comprehensive recovery of indium, germanium, lead and silver from zinc slag leaching residue 43. New process for recovering germanium by extraction 44. Changes and prospects of germanium recovery technology in Zhuzhou Smelting 45. Recovery of germanium as a by-product in the zinc smelting process 46. Emulsification and elimination during solvent extraction of germanium 47. Development of comprehensive recovery technology of germanium in Shaoguan 48. Production practice of recovering germanium in rectification tower 49. Preparation of sodium metabisulfite using SO2 flue gas from boiling roasting of zinc concentrate 50. Research on defluoridation of zinc casting scum Part 8 Relevant equipment 8.1 Various smelting furnaces and kilns 1. Current status of lead-zinc blast sintering machine and its sealing structure 2. Transformation of the furnace shell of Shaoye lead-zinc blast furnace 3. Technical transformation of Shaoye lead-zinc closed blast furnace 4. Transformation practice of boiling roasting furnace 5. Transformation of production technology of boiling roasting equipment 6. Discussion on the production and welding of the air distribution plate of the 109㎡ boiling roaster 7. Renovation of the scum treatment equipment of the lead-zinc closed blast furnace 8. Renovation practice of the charging device of the lead-zinc closed blast furnace 9. Renovation practice of the masonry lining of the lead-zinc closed blast furnace system equipment 10. Improvement practice of the brick sleeve of the Cheyenne of the zinc vertical pot distillation furnace 11. Development and application of the flat tray of the zinc rectification furnace 12. Effective measures to improve the masonry quality of zinc rectification furnaces 13. Improvement of the combustion chamber of the tower zinc distillation furnace in Shaoyang 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. Treatment of freezing furnace accidents of power frequency molten zinc electric furnace 19. Induction electric furnace and application for zinc alloy processing 20. Discussion on the transformation plan of power frequency induction electric furnace 21. Research and application of inductor refractory materials for power frequency cored molten zinc electric furnace 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 residue volatilization kiln 8.2 Dust collection and acid making equipment 27. Renovation practice of tubular dust collector 28. my country’s first 13㎡ four-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 the inlet and outlet pipes of sulfur dioxide blower 31. Design and selection of electrostatic precipitator insulators 32. Application of Monsanto dynamic wave washing technology in the flue gas acid purification process of non-ferrous metal smelting plants 33. Application of HF acid-resistant clay on empty smelting acid towers 8.3 Distillation equipment (4 articles) 34. Several technical modifications of zinc distillation towers 35. Research on new methods for detecting 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 for treating zinc leaching residue by goethite method 39. Purification of zinc electrolyte using boiling reactor 40. Autoclave selection in hydrometallurgy 41. Use of vibration reactor to remove cadmium from clean liquid 42. Anti-corrosion technology in hydrometallurgy and mechanization of electrolytic tank digging 43. Optimized design of zinc electrolytic tank side busbar 8.5 Thickening mixing and filtering equipment 44. Regarding the proportional amplification of mixing operations 45. Review of Zhuye zinc smelting leaching residue filtering equipment 46. Dehydration of zinc leaching residue using a fully automatic squeeze filter press 47. Regarding the selection of hydrometallurgical filtering equipment 48. Improvement of hydrometallurgical zinc slag filtration process equipment and research and development of filter press products 49. High-efficiency thickener 50. Thickener use failure analysis and countermeasures 51. Application of PF-25 flip-plate vacuum filter in the wet zinc oxide industry 8.6 Stripper 52. Development of new zinc stripper 53. Cathode zinc stripping practice - transportation of zinc stripper and electrode plates 8.7 Boiler 54. Technical transformation of zinc roasting waste heat boiler 55. Application of waste heat boiler in recovery of waste heat from boiling roasting of zinc concentrate 56. Comparison of zinc roasting waste heat boilers in Kawasaki, Japan and Ahlstrom, Finland 8.8 Cooling tower 57. YBF-X zinc electrolyte cooling tower 58. Renovation ideas of air cooling tower in electrolysis workshop 59. Zinc electrolyte air cooling tower saves significant energy 60. Improvement of zinc electrolyte cooling tower 8.9 Other equipment 61. Summary of the main results of the technical transformation of electromechanical equipment in Zhuzhou smelting plant 62. Development and application of wet ball mill 63. The effect of switching to a vibrating motor for discharging the ore from the batching bin 64. Application of quaternary alloy anode plates in hydrometallurgical zinc smelting 65. Research and application of zinc electroplating lead-based quaternary alloy anodes 66. Application of viscosity measurement in hydrometallurgical zinc smelting Chapter 9 Foreign Literature 9.1 Overview 1. The latest experience in modern zinc processing technology 2. Smelting of foreign zinc oxide ores 3. Development of the Balen Zinc Plant of Laoshan Company in Belgium in the past ten years 4. Current status of production at Akita Zinc Refinery 5. Zinc smelting at Akita Smelter 6. The past, present and future 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 Co. 9. Zinc and lead smelting renovation at Hachinohe Smelter 10. Current status of roasting, sulfuric acid equipment and zinc oxide production at Onahama Smelter 11. Zinc smelting renovation at Nippon Mining and Zinc Co. 12. Technical modification of Japanese lead and zinc smelters 13. Technical modification of Japanese lead and zinc smelters (continued) 14. Zinc production at Rockenhill United Smelting Co., Port Pirie, South Australia 15. Recent developments at the Hudson Bay Mining and Smelting Company zinc plant 16. Modern expansion of Trail lead and zinc smelter in Canada 17. Chid Creek (Timmins) zinc plant expansion with latest technology 18. Comparison of energy consumption in modern zinc production 19. Modernization of the Terrell zinc system and lead smelting of Cominco Co., Ltd. 20. The problem of Comin Cotetrall plant remains unresolved 9.2 Boiling roasting 21. Recent process improvements of the Kokkola zinc roaster 22. Boiling roasting of zinc concentrate at Liston plant in Australia 23. Boiling roasting of zinc concentrate and flue gas acid production at Laoshan Company in Belgium 9.3 Pyrometallurgical zinc smelting 24. Direct smelting of oxide materials in zinc smelting blast furnace 25. Electrowinning zinc smelting process of the American Smelting and Refining Company 26. Werner process of pyrometallurgical zinc smelting (English) 27. Vought zinc smelting process 28. Australian Sulphide Company's Kirkland Creek lead-zinc smelter 29. Modernization of the 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 furnaces 33. Research on zinc distillation process 34. Preparation of zinc powder by electrothermal smelting and distillation 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 smelter 41. Renovation of Datlen electro-zinc plant 42. Solution purification of Laoshan Company in Belgium 43. Zinc electrowinning of Laosan Company in Belgium 44. Experience in the utilization of leaching slag in the electro-zinc plant of Ruhr Zinc Company 45. The electrolytic zinc plant uses the selective precipitation zinc method for water balance and magnesium control 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 the zinc electrolysis at the Kamioka smelter 50. Recent improvements in the Kamioka zinc electrolysis workshop 51. Liquid purification process at the Outokumpu Kokola 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 60. Pressure oxidation leaching of zinc concentrate 61. Production practice and development trend of pressure leaching method of Sherritt Zinc 62. Pressure leaching process of zinc concentrate 63. Analysis of pressure leaching process of zinc concentrate 64. Preparation of zinc by solvent extraction-electrolysis method 65. Removing iron from sulfuric acid solution by thermal precipitation 66. The role of iron sinking in hydrometallurgy 67. Technical development of Lucci Company in hydrometallurgy 9.5 Comprehensive utilization 68. Treatment of leaching residue of Laoshan Company in Belgium 69. Cadmium production at the Risdon plant of the Australian Electrozinc Company in Tasmania 70. Solvent extraction of copper from high copper solutions in the zinc sulfate system 71. Production of cadmium at the New South Wales Kirkkel Creek plant of Sulfide Co., Ltd. 72. Cadmium vacuum distillation and refining at the Nolden Line Zinc Plant in West Germany 9.6 Others 73. Zinc smelting at the Iijima smelter 74. Recent production of Iijima Zinc Refinery 75. Processing of finished zinc products by Laoshan Company in Belgium 76. Energy requirements of Sherrit zinc smelting process 77. Production of zinc powder by hydraulic atomization method 78. Characteristics and problems of spray zinc smelting method 79. Characteristics and problems of spray zinc smelting method 80. Production of battery zinc powder and amalgamated zinc powder by spray method 81. Energy saving at Hikoshima Electro-Zinc Plant 82. Japan's "Spray Zinc Smelting" Test Results Report 83. Mercury Control at the Australian Electro-Zinc Company 84. Design of the World's Largest Smelting Flue Gas Acid Plant 85. Production of Recycled Zinc in my country 86. Practice of Continuous Feeding Rotary Furnaces for Processing Zinc Smelting Intermediate Materials