Pyrite boiling furnace operating procedures

Roasting position operation method 1. Job tasks and scope 1. Job tasks: (1) Operate according to specified indicators and maintain the equipment under your control. (2) Ensure that the material cutting is uniform and stable, and that the flue and dust removal equipment are not blocked or leaked, so that "if there is a blockage, it must be opened" and "if there is a leak, it must be blocked." (3) Ensure that the gas concentration is qualified and stable, the burnout rate is high, sampling is careful, and the original records are accurate and complete. (4) The general requirements are to achieve "first stability", "second diligence", "three no's" and "four timeliness". Once stable: Gas concentration is stable. Erqin: Check and adjust frequently. Three no's: No black residue, no black ash, no positive pressure. Four in time: Report changes in operations in a timely manner, adjust gas concentration fluctuations in a timely manner, deal with leaks, bubbles, drips, and leaks in a timely manner, and rectify ash problems in the flue in a timely manner. 2. Scope: Furnace management of the following equipment: Mine hoppers, furnaces, fans, and electrical equipment. 2. Process flow (see attached picture 4) The raw materials are sent to the ore hopper through the 1 and 2 # belts, and fed into the furnace from the disk. The air is sent from the fan, and is roasted in the boiling furnace to produce sulfur dioxide furnace gas and ash. After the furnace gas is deheated by the waste heat boiler, the two-stage cyclone dust removal passes through the primary dust hopper and enters two electrostatic precipitators. It comes out of the electrostatic precipitator and enters the secondary dust hopper for the purification process. Mine dust and slag are recovered and humidified by recovery equipment, then put into ash and slag storage bins and transported out of the factory by train. 3. Main equipment technical characteristics 1. Mine bucket: φ3000, H=5420, V=23m3 2. Round plate: φ3000 motor 13Kw, speed range: 1250～2500 rpm 3. Boiling furnace: φ6500/φ8500, H=20880, boiling layer area 33 m2 Production capacity: 400 tons/day, roasting intensity 12.1 tons/day boiling height: 1200~1500mm bed speed: 1～1.16 meters/second air volume: 28600 standard meters3/hour Furnace gas residence time: 12 seconds, secondary air volume: 5050 standard meters 3 / hour hood hole speed: 34.5 m/s (φ5-8 side hole) 4. Air blower: model: D500—12, Q=30000 m3/hour, H=2300 mm water column. Comes with motor: 290Kw 3000V/6000V, 2950 rpm. 5. First-level cyclone dust collector: model: UH-24 type, 2-φ2000, H=15864. 6. Secondary cyclone dust collector: model: UH-15 type, 2-φ1900, H=12904. 7. A dust fight: φ3000, H=5650. 8.Second dust bucket: φ3000, H=6200. 4. Chemical reactions and operating indicators during the production process (1) Operating indicators: 1. Quality of ore entering the furnace: Contains sulfur: 35~42%, water content: Less than 8% (more than 7% is better). No large pieces or mechanical impurities. 2. Furnace temperature: Boiling layer temperature 850-900℃, furnace top temperature: Less than 1000℃. 3. Pressure: Furnace bottom pressure: 1000-1100 mm water column. Furnace top pressure: 0--5 mm water column. 4. Released sulfur dioxide content: 12.5-13%. 5. Ash residue sulfur: Less than 0.5% (brown) 6. The inlet of the electric precipitator contains dust: Less than 20g/m3. (2) Chemical reactions during the production process: 4FeSO2+11O2=2Fe2O3+8SO2 3FeS2+8O2=Fe3O4+6SO2 Attached Figure 4: Fluidizing furnace and ash recovery station flow chart 1. Ore conveyor 2. Air blower 3. Ore hopper and disk 4. Fluidizing furnace 5. Waste heat boiler 6. First-level cyclone dust collector 7. Secondary cyclone dust collector 8. Primary dust hopper 9. Slag cooling roller 10. Slag discharge spiral 11.3# scraper 12.7# scraper 13.8# scraper 14.4# scraper 15.2# humidifier 16.1# humidifier 17.3# belt conveyor 18. 4# belt conveyor 19. 5# belt conveyor 20. Ash bin 21. 22. Ash discharge spiral 5. Key points for starting, stopping and normal operation: starting the boiling furnace: 1. Preparation and inspection before driving (1) The new furnace should go through the oven, the oven should be completed, and the furnace should be cleaned. (2) Check whether the hood is intact, whether the holes are pierced, whether the distance between the holes and the fire clay is appropriate, whether there are debris and dust accumulation in the air chamber, whether the boiler tubes are intact, and whether each valve is in the required position for driving. (3) Test the wind cap resistance and draw a horizontal line for the ash spreading height in the furnace. (4) Prepare 35-40 tons of ignition low-grade material, with a moisture content of less than 3.0% and a sulfur content of 15-18%, and sieve through a 4 mm mesh. (5) Commissioning of operating equipment: Belt conveyor, disk, fan, etc. (6) Prepare ignition tools: Cotton yarn, diesel oil, contact compressed air, set up the oil gun, close the slag outlet insert plate, contact the electric precipitator entrance gate. (7) Spread ash: Use manual or open air to spread ash to a height of 550 to 600 mm. After spreading the ash, build the furnace door. (8) After spreading the ash, turn on the air and do a cold boiling test. At the same time, observe the boiling situation and record the current under the best conditions, the pressure difference of the orifice flow meter and the furnace bottom pressure data. (9) Contact the boiler engineer to prepare for driving, and cooperate with the driving to raise temperature and pressure. 2. drive a car: (1) Turn on the oil gun to ignite, adjust the amount of oil and compressed air, so that the flame is bright yellow and fills the furnace. (2) Properly adjust the opening of the vent chimney cover so that there is a slight negative pressure in the furnace. (3) Move the oil gun so that the flame is close to the surface of the ore layer, and start the blower to make the ore layer slightly boil. When the temperature of the middle layer reaches 500°C, turn on the air for 2 to 5 minutes and repeat it to increase the temperature of the bottom layer. (4) When the temperature of the bottom layer reaches above 500°C, stop the oil and check whether the furnace is flat and whether there are oil scars. If necessary, use steel bars to detect it. (5) Close the ignition hole, enlarge the air-proof chimney cover, turn on the wind and add ore, and gradually increase the furnace temperature and furnace bottom pressure to normal. (6) After the furnace is lit, it is decided to ventilate or temporarily stop the furnace to keep it warm according to the requirements of the squad leader. Parking of boiling furnace: 1. Emergency stop: (1) Stop feeding and stop the blower. (Open the vent cover) (2) Contact the conversion boiler post and report to the squad leader. (3) Close the slag outlet insert plate. (4) Wait for the driving notice. 2. Short-term parking: (1) Reduce the amount of ore invested in the furnace, control the furnace temperature below 900°C, maintain the furnace bottom pressure at 1000-1050 mm water column, and close the slag outlet insert plate. Note down the furnace temperature, pressure, and air volume. (2) Notify the transfer post, turn off the main blower, stop mining, and stop the furnace fan. (3) (Open the vent cover) Notify the dust collector to close the dust collection entrance gate. (4) When the temperature of the bottom layer of the furnace is lower than 500℃, heat preservation is required, and the furnace must be shut down when the temperature reaches 800℃. (5) Contact the boiler engineer to handle the shutdown. 3. Long-term parking: (1) Notify the conversion and electric dust collector before shutting down the boiler, and the boiler position should cooperate with the shutdown operation. (2) Stop adding ore, open the slag outlet insert plate, open the vent cover, close the electric dust collector inlet gate, turn on the fan, and try to remove the slag accumulated in the furnace. (3) Stop the fan, open the furnace door, and clean the furnace with wind or manually. Key points for normal operation of boiling furnace: 1. Pay attention to changes in furnace temperature and furnace bottom pressure at all times, and operate in strict accordance with the indicators. 2. Observe the moisture and particle size changes of the ore entering the furnace at any time. Keep in mind that the mineral material is dry, fine, and contains even sulfur, so that the furnace can operate normally. 3. To discharge slag continuously, it is better for the ash to be brown. 4. The air intake should be stable, the flue should be free of blockage and air leakage, and the ash discharge pipe should be smooth. 6. Causes and treatment methods of abnormal phenomena: No. Solution to the cause of the phenomenon: 1. The furnace smokes seriously, the negative pressure at the purification station is low, and the amount of air leakage is too large. Check the ash tube and each cover to see if there is air leakage or falling off. 2. The furnace smokes seriously, the negative pressure at the purification station is too high, there is dust accumulation or blockage, and the furnace gas cannot be pumped out. Check the flue and dust collector hopper. If any dust accumulation is found, clear it immediately. 3. The furnace temperature drops, and the positive pressure is severe and there is a sound of air release in the furnace. The evaporation tube in the path is leaking (damaged). Work with the boiler engineer to check the cause and handle it properly. 4. There is a large temperature difference at each point in the boiling layer, or the temperature at the discharge port is low and the boiling is poor. There are too many wet ore dumplings or impurities. Check the quality of the ore entering the furnace, turn it around quickly, open the small hole for discharging coarse slag, discharge it intermittently, and shut down the furnace in serious cases. 7. Patrol inspection and equipment maintenance 1. Patrol the following equipment once every hour. Check the location or equipment name, content, ore hopper and disk feeder 1. Whether the material is discharged uniformly and whether the ore quality is qualified. 2. Whether there is overflowing ore, leakage of ore, and whether there is piled material at the discharge port. 3. Whether the lubrication is good, and whether there is any abnormal noise or heat in the reducer and motor. Air blower 1. Whether the oil temperature, oil pressure, oil level, and current are normal. 2. Is there any vibration and abnormal sound, and is there any heat in the motor? 3. Whether the cooling water is appropriate. The slag outlet, dust collector, ash hopper lower ash pipe and ash discharge valve 1. Whether the electric valve is flexible and easy to use. 2. Whether the lower ash gate is clear and whether there is dust accumulation or air leakage. 3. Check whether the electric motor and reducer are hot or short of oil. 4. Check whether the color and particle size of the discharged ash meet the requirements. Flues and dust hoppers 1. Check once every shift and plug any leaks found in time. 2. Dust the dust bucket once an hour. 2. Equipment maintenance: (1) Keep the fan room and operating room clean, and keep the furnace platforms and floors free of dust and water. (2) Keep the equipment free of dust, paint, anti-corrosion, and thermal insulation intact and effective. (3) When the motor starts without load, you can change or substitute the fuse model at will. (4) The lubricating parts of the equipment must be refueled according to the specified time and oil number, and the lubricating oil must undergo three-stage filtration. (5) Disable electrical equipment for more than 24 hours and ask an electrician to inspect it before signing a contract. 8. Safety precautions (1) Wear a safety helmet when working in the furnace to prevent things from falling from the furnace and injuring people. (2) When placing ashes, the trouser legs should be placed outside the rubber boots to prevent burns from being filled with ashes. (3) The transmission part or machine head of the operating equipment should have a safety cover. (4) When the stove is ignited, do not look inward to prevent burns from the fire. When igniting, the diesel fuel must be burned to prevent deflagration caused by accumulated oil. (5) When new comrades come to work on the job, they must receive three-level safety education. After passing the job operation method examination, the tenants can operate independently.

Roasting post 1, process flow 2, operating procedures (1) Post tasks: The qualified pyrite sent from the raw material post will be burned out of the required slag, ore dust and furnace gas containing sulfur dioxide through the boiling roasting furnace. After preliminary cooling and dust removal, it will be sent to the electrostatic precipitator post. (2) The management scope ranges from the finished ore storage hopper of the boiling furnace to the cyclone dust collector outlet, the slag discharge system, and the dust discharge system includes all buildings, equipment, pipes, electrical appliances, instruments, etc. in this area. (3) Operation index a, hearth temperature: Middle bottom layer 800-900℃ b. Furnace bottom pressure: 1000-15000 mm water column c, furnace top pressure: -10 mm water column d. Sulfur dioxide concentration in the outlet furnace gas 12-13% e. Slag residual sulfur ≤ 0.5% (4) Oven a. Purpose of the oven. The main purpose of the oven is to eliminate free water and crystal water in the refractory materials. The oven is properly used. b. Oven preparation. ①Prepare about 40 tons of firewood, diesel fuel for ignition, and a little cotton yarn. ②Do not tighten the blind plate on the top of the boiling furnace during baking to drain steam, take rainproof measures, and blind it after baking. ③Cover the charging port of the boiling furnace and open the furnace outlet pipe to exhaust. ④After the hood is installed, the refractory layer is poured and cured for three days. Steel plates or refractory bricks are laid on the upper part of the hood to avoid burning out the fan. ⑤Inform the instrument engineer to check and calibrate the instrument. D Safety precautions ① During the drying period, flammable and explosive items must not be piled around the boiling furnace. And prepare water pipes and fire-fighting equipment. ②Operators must dress appropriately for work. ③There should be adequate lighting at night. (5) Preparatory work before ignition according to the starting and stopping operation method A. (A) Clean the furnace, vent cap holes, clean the air chamber, and seal the air chamber manholes. (B) Check the feeding port and slag discharge port for foreign matter, clean and inspect the furnace gas cooler, cyclone dust collector and ash hopper and seal the cleaning holes. (C) Prepare diesel fuel, test run the gear oil pump and supply oil to the high oil storage tank, and check the low pressure oil nozzle. (D) Trial operation of star-shaped ash discharge valve, roller ash discharge machine, scraper conveyor, etc. (E) Check whether the oil level of the air blower is normal, whether the oil level of the belt feeder reducer is normal, and conduct a test run. (F) Prepare enough ash ore, all passing through the 2.5-3.0 mm screen, as a base material for ignition. (H) Prepare several bags of high-quality white coal for warming. B. Ignite and start (A) Spread ash 450-500 mm high into the furnace, seal the furnace door, cover the feeding port, and open the upper exhaust port of the furnace outlet pipe. (B) To do cold boiling, start the air blower and gradually increase the air volume for about 5 minutes. Stop the air blower and check whether the material surface in the furnace is flat through the observation hole. (C) Start the furnace bottom fan to supply air to the oil nozzle, ignite the oil nozzle to spray fire into the furnace, maintain an open flame in the furnace, and gradually increase the air volume at the furnace bottom for about half an hour. Adjust the air volume and oil volume according to the temperature of the bottom of the boiling layer. When the temperature at the bottom of the furnace reaches above 500°C, an appropriate amount of pulverized coal can be added to speed up the heating process. When the temperature at the bottom of the furnace reaches above 700°C, materials can be added to the furnace. Stop fuel injection and ventilate in conjunction with the change position and purification position. (D) When starting the ventilation, pay close attention to the changes in furnace temperature and furnace bottom pressure, and work closely with the purification and conversion positions to gradually increase the air volume until normal operating conditions are reached. (E) When preparing to drive, start the slag and dust removal equipment. C Short-term shutdown (A) Short-term shutdown is mainly based on heat preservation. After stopping feeding, when the furnace temperature drops to 800-850℃, the furnace will stop for heat preservation. (B) Before parking, you should contact the transformation post, and inform the electrostatic precipitator, purification, and dry suction posts to prepare for parking. (C) Coordinate with the conversion station, first stop the furnace bottom fan, then stop the main blower, and cover the feeding port. (D) After parking, pay attention to the temperature changes in the furnace and make parking records. D Long-term parking (A) The transfer position should be notified before parking. (B) Gradually reduce the amount of ore input to slowly reduce the concentration of sulfur dioxide in the furnace gas. When the hopper is used up and the furnace temperature drops below 200°C, the conversion post can be notified to stop. (C) Open the exhaust port at the furnace outlet, start the air blower, and discharge the slag out of the furnace as much as possible. When the furnace temperature drops below 400°C, stop the air blower, open the furnace door, remove the slag and seal the furnace door, and start the air blower to continue cooling. (D) When the temperature drops below 100℃, stop the cold blowing, stop the air blower, open the furnace door, cool down naturally, and prepare to clean the furnace. (E) Stop the drum slag discharge machine, stop the star ash discharge valve and scraper conveyor, etc. E Emergency Stop (A) Emergency stop due to sudden power outage in the entire plant. You should immediately report to the company and notify the electrician to check and handle the problem and restore power supply quickly to start the operation. Long parking time is likely to cause the furnace to die. (B) If the air blower trips and makes an emergency stop, you should immediately report to the squad leader, stop feeding materials into the furnace, notify the transformation post to treat it as an emergency stop, notify the electrician, and the mechanic will quickly find out the cause, troubleshoot the fault, and drive the vehicle quickly according to the start-up procedures to prevent the furnace from dying. (C) The main blower trips and makes an emergency stop. You should immediately stop feeding materials into the furnace, open the furnace outlet exhaust port, appropriately turn down the air volume at the bottom of the furnace, lower the furnace temperature, and treat it as a short-term shutdown. (6) Start and stop the slag and dust removal system. A. Check before driving (A) Check the refueling point and whether there is oil in the reducer oil level. (B) Is the cranking idling normal, and whether there are any dead spots or looseness. (C) Check and clean the ash hopper to prevent debris from blocking the star-shaped ash discharge valve. (D) Start the drum slag discharge machine, scraper conveyor and other slag discharge equipment, approve the steering, conduct an empty test run, and check whether the motor is overheating. B start and stop (A) Start the boiling furnace half an hour before ventilating it (B) Start the drum slag discharger first, and then start the scraper conveyor. (C) Turn on the cooling water of the drum slag discharge machine. (D) When parking, the remaining slag and ash in the equipment must be drained as much as possible before parking. (E) When equipment or electrical appliances fail, emergency stop should be made. (7) Abnormal situation and treatment method No. Cause of abnormal situation Treatment method 1 The bottom temperature does not rise when heating up 1. Thermoelectric corner failure ； 2. The air volume is low and the internal boiling condition is not good. ； 3. The oil volume is too small. 1. Notify the instrument technician to check and repair. ； 2. Increase the air volume appropriately ； 3. Increase the amount of oil. 2 Cold ash is produced in the furnace 1. The ore particle size becomes coarser ； 2. The air volume of the air blower is too large. 1. Check whether the raw material screen is damaged ； 2. Adjust the air volume and increase the furnace bottom pressure appropriately. 3 Furnace temperature generally rises 1. Too much ore is added ； 2. Mine becomes dry ； 3. Increase in mineral sulfur content ； 4. The thermoelectric unit and instrument are malfunctioning. 1. Adjust the amount of ore added according to the furnace temperature and SO2 concentration. ； 2. Appropriate reduction of ore ； 3. Notify the instrument technician to check and repair. 4 Furnace temperature generally drops 1. Mine water content increases ； 2. Excessive mixing of mineral dust ； 3. Decrease in sulfur content in minerals ； 4. The thermoelectric unit instrument fails. 1. Take measures to reduce water content ； 2. Appropriately reduce baking dust mixing configuration ； 3. Notify the appropriate ore allocation to the raw material positions ； 4. Notify the instrument technician to check and repair. 5 The furnace temperature changes slightly 1. Thermoelectric corner failure ； 2. The thermoelectric unit casing is broken. ； 3. There are moving blocks in the furnace ； 4. There is accumulation and scarring in the cutting materials. 1. Notify the instrument technician to check and repair ； 2. Properly increase furnace bottom pressure ； 3. Park and clean up. 6 The concentration of SO2 in the furnace gas increases 1. The amount of ore invested increases ； 2. Increased sulfur content in minerals ； 3. The air extraction volume of the main blower becomes smaller ； 4. There is an error in the analysis of the conversion position or the analysis instrument leaks or the automatic analysis indication fails. ； 5. The air volume of the air blower becomes smaller. 1. Appropriately reduce the amount of mineral investment ； 2. Notify the raw material post to adjust the sulfur content of the ore ； 3. Properly adjust the furnace bottom and conversion air volume ； 4. Contact the conversion post to check and re-analyze, and notify the instrument engineer to check and repair. 7 The SO2 concentration of the furnace gas decreases 1. The ore is cut off ； 2. Reduction in mining volume ； 3. Reduced sulfur content in minerals ； 4. Air leakage in roasting stations, purification stations, and electrostatic precipitator stations ； 5. The air volume of the air blower is too large ； 6. The main blower is too large when pumping air. ； The analysis of the conversion position is incorrect or the indication of the analysis instrument fails. 1. Troubleshoot ore failure ； 2. Appropriately increase the amount of mineral investment ； 3. Notify raw material positions to adjust ore distribution ； 4. Check and plug leaks ； 5. Reduce the air extraction volume of the air blower ； 6. Reduce the air extraction volume of the main blower ； 7. Notify the transferred position to re-analyze, and notify the instrument engineer to inspect and repair. 8 There is severe positive pressure smoke at the lower port. 1. The main blower has insufficient air extraction capacity. ； 2. The air volume of the air blower is too large ； 3. Dust bucket, cyclone and flue are blocked ； 4. There is serious air leakage in the system equipment pipelines ； 5. The safety water seal of the electric demister is pumped out ； 6. The suction of the degassing tower at the purification station is too large. 1. Contact the transformation post to adjust the air volume appropriately. ； 2. Properly adjust the air volume at the bottom of the furnace ； 3. Check to identify the blockage and stop the vehicle to clean it. ； 4. Check for leaks ； 5. Add water immediately to fill the safety water seal ； 6. Make appropriate adjustments. 9 The pressure at the furnace bottom increases 1. The air volume at the furnace bottom is too small ； 2. The small holes in the hood are blocked or some of the eyes are burned out. ； 3. Increase in mining investment ； 4. Cold ash is produced in the furnace and large particles are deposited. 1. Appropriately increase the volume inside the furnace bottom ； 2. Stop for cleaning or replacement ； 3. Appropriate reduction of ore ； 4. Check the raw material vibrating screen. If it is damaged, replace it immediately. Increase the air volume at the furnace bottom appropriately, and raise the bed layer to gradually take away large particles. 10 Accumulation at the discharge port 1. The ore entering the furnace is too wet ； 2. Partial hood burnt out ； 3. Scarring in the furnace. 1. Contact the raw material post to adjust the water content of the ore mix ； 2. Stop and clean and inspect the hood ； 3. Park and clean up. 11 Furnace low pressure drops 1. Ore cutoff ； 2. The air volume of the air blower is too large ； 3. Scarring and perforation in the furnace. 1. Troubleshoot ore failure ； 2. Proper adjustment ； 3. Parking processing. 12 Belt feeder failure 1. Deviation ； 2. Tear, burn. 1. Adjustment ； 2. Emergency stop and repair. 13 The slag discharge roller moves up and down 1. The supporting wheel is installed tilted ； 2. Cylinder deformation. 1. Readjust. 2. Correction or update. 14 Bearing temperatures rise everywhere 1. Bearings are short of oil ； 2. There is dirt in the bearing ； 3. The bearing is stuck. 1. Check and refuel ； 2. Fold it open for cleaning and refueling. ； 3. Check and adjust. 15 The gear has a strong impact sound 1. The lateral clearance of the gear is too large 1. Adjust or replace it 16 The gear has periodic noise 1. The gear is not correct ； 2. The gear top clearance is too large. 1. Adjustment ； 2. Adjust the gear and match the gap. 17 The small gear and the large gear do not match well. The supporting wheel wears and is turned and updated according to the situation. 18 The drum vibrates 1. The connection between the supporting wheel device and the base is damaged. ； 2. The supporting wheel is worn. 1. Calibration and testing ； 2. Adjust or update. 19 The temperature of the slag and dust at the drum outlet is too high 1. Insufficient water volume ； 2. The drum rotates too fast. 1. Increase the amount of water appropriately ； 2. Adjust the speed appropriately. 20 Roller trip 1. Electrical failure ； 2. The drum speed is too low and there is too much material in the drum. 1. Notify the electrician for inspection ； 2. Increase the drum speed appropriately. (8) Normal operation requirements A: Contact the raw material post every shift to understand the sulfur content, water content and particle size of the raw material ore components. B. Frequently communicate with the purification, electrostatic precipitator, conversion, and dry suction positions to understand the system resistance, gas concentration, and acid mist indicators. C. Keep the ore supply normal, pay attention to the discharge port not being blocked, keep the ore flowing, and keep the finished product storage hopper filled with ore. D. The variation range of the ore input amount should not be too large to maintain stable operation of the furnace. E Pay attention to the temperature changes of the furnace. If any abnormality is found, the cause should be identified and dealt with. F. Control the boiling furnace to operate under slightly negative pressure. If you find smoke emitting from the feed port under positive pressure, you should find out the cause and deal with it. G Pay attention to the color of slag and ash discharged from the furnace. H Carry out the sampling work of the ore entering the furnace according to regulations, and analyze it once every shift. (9) Safety rules and precautions A. Ignition and temperature rise should be carried out in accordance with operating procedures. B Dress accordingly and wear a hood. C The air blower inlet protective net must be intact. D. Keep the air blower and motor clean. When cleaning the blower and motor, the work clothes should be tightly buttoned. Lesbians should hide their long hair in a work cap. They are not allowed to wear gloves or use wet cotton gauze. It is strictly prohibited to directly wipe the rotating parts. E It is strictly forbidden to stack flammable and explosive items around the boiling furnace, furnace gas cooler, cyclone dust collector, and slag discharge drum. F When the furnace is scarred, people should scar outside the furnace. If they want to enter the furnace, they must implement safety precautions and wear labor protection equipment. G. Install the safety cover of the rotating part before driving. H. Stop and clean the equipment. When dust accumulates in the pipes, preventive measures must be taken to prevent the hot dust from hurting people.