Phosphorus mine reverse flotation and ore crushing post operation procedures

Operation procedure for ore crushing post

1 job task

1.1 Phosphorus ore yard different tastes mixed phosphate according to the requirements by a certain percentage. 1.2 The phosphate ore is broken into small ore particles of 0-15mm and transported to the powder ore bin for use in ball milling positions.

2 Working principle

2.1 phosphate rock into the crusher machinery, by pressing a mechanical, impact crushing the ore, ore qualified screened by sieving to mechanical graining ball transporting position.

3 Process

3.1 The forklift delivers different tastes of phosphate rock into the crushing system according to a certain proportion, and mixes while crushing. 3.2 Phosphate ore is sent to the hopper by the forklift, and is transported by the 1# belt conveyor to the 1# mine bin. It is transported into the jaw crusher by the 1# and 2# plate feeders. After being crushed, it is transported by the 2# belt conveyor. 2# mine silo, sent by ##, 4# feeder to 1#, 2# vibrating screen, sieved ore is transported by 5# belt conveyor to 3# mine bin, by 3#, 4# plate feeder The 1# and 2# cone crushers are sent again to be crushed, and the crushed ore particles are also sent to the 2# belt conveyor for screening to form a broken closed circuit cycle. The sieved ore particles are made of 6#, 7#, 8# belt conveyors. Transfer to the powder mine for use in ball mill positions.

4 Process indicators

4.1 coarse crushing: Maximum feeding size: 300mm Maximum product size: 80mm jaw crusher discharge size: 52~58mm 4.2 Fine crush : Maximum ore size: 80mm Maximum product size: 15mm Cone crusher discharge size: 5 ~15mm 4.3 Screening: Screen size: 1# sieve 18mm, sieve size: -15mm

5 main equipment

6 operation control points

6.1 Preparation before driving

6.1.1 Check the jaw crushing motorized tooth plate and loosen the fixed tooth plate screw. 6.1.2 Check if the jaw crusher of the jaw crusher is in good condition. 6.1.3 Check if the heavy-duty plate feeder is off-track and the ABC ring is good. 6.1.4 Check if there is oil in the lubrication point, whether the gearbox of the reducer reaches the oil level, and whether the quality meets the requirements. 6.1.5 When the vehicle is in the parking state for more than eight hours or the direct starting is difficult, the jaw crusher must be driven more than one turn before driving, and the moving jaw is at the highest position. 6.1.6 Check whether there is ore in the crushing chamber of the jaw crusher and the cone crusher, and whether the size of the discharge port meets the requirements. 6.1.7 Check the belt conveyor coupling guard and the belt guardrail is in good condition. 6.1.8 Check if the oil level of the belt reducer is normal. 6.1.9 Check if the belt is damaged and the belt head is glued properly. 6.1.10 Check if the motor and reducer anchor bolts are tight. 6.1.11 Check the skin and the belt cleaner is in good condition. 6.1.12 Check the length of the belt conveyor for damage. 6.1.13 Check if the funnel is clear. Check for any ore on the belt and if there are any obstacles around. 6.1.14 Check the running condition of the iron remover and contact the monitor if there is any problem. 6.1.15 Check if the belt tensioning device is normal and the belt tightness meets the requirements. 6.1.16 Check the pressure of the cone breaking locking system, whether there is oil leakage, whether the oil level of the pressure tank meets the requirements, the pressure is 8~15MPa. 6.1.17 Check the oil level, oil temperature and oil quality of the oil station. The oil pumps are alternately started to check. The normal oil pressure is 0.2 MPa, the temperature is 20~30 °C, the temperature is warmed before starting in winter, and the cooler is used in summer. 6.1.18 Start circulating water and watch if there is any leak in the circulating water pipe. 6.1.19 Start the oil pump. After the oil temperature and oil pressure are normal, observe whether the current is normal. 6.1.20 Check whether the bearing lubrication of the screening equipment is lack of oil, and the equipment is not allowed to run without oil. 6.1.21 Check if the screen is tensioned, whether there is any damage, and whether the sieve hole is blocked. 6.1.22 Check if the drive belt is proper, otherwise adjust it. 6.1.23 Check if the sieve plate screws are loose or dropped. 6.1.24 Check if the oil level and oil quality of the reducer meet the standard.

6.2 Driving normally

6.2.1 After receiving the driving instruction, each device will send power normally. 6.2.2 Open the 5#, 6#, 7#, 8# belt conveyors and drive the unloading trolley on the 8# belt conveyor to the designated location. 6.2.3 Start 1#, 2# vibrating screen, start 3#, 4# feeder, adjust its frequency conversion to ensure uniform and stable feeding. 6.2.4 After starting the 1# belt conveyor, inform the forklift to start the mine. When the 1# silo has 30% of the material level, start the 2# belt conveyor, and then start the 1#, 2# jaw crusher, start 1 #, 2# Plate feeder, adjust its frequency conversion to ensure uniform and stable feeding. 6.2.5 When the 2# silo has 30% material level, start the 1# and 2# cone crushers. Start the 3# and 4# plate feeders and adjust their frequency conversion to ensure uniform and stable feeding to the cone crusher. 6.2.6 Adjust the unloading trolley and transport the mine to the designated location.

6.3 Normal parking

6.3.1 After receiving the parking instruction, notify the forklift to stop feeding. 6.3.2 After the phosphate rock is transported on the 1# belt conveyor, stop the 1# belt conveyor. 6.3.3 After the 1# silo and the phosphate rock on the 1# and 2# plate feeders are transported, the plate feeder is stopped. 6.3.4 After the phosphate rock in the jaw crusher is broken, stop the jaw crusher. 6.3.5 After the delivery of phosphate rock on 2#, 3# silo and 3#, 4#, 5# belt, 3#, 4# plate feeder, stop 3#, 4# belt conveyor, stop vibrating screen , stop 2 #, 5 # belt conveyor, stop the cone broken. 6.3.6 After the phosphate rock on the 6#, 7#, and 8# belt conveyors is finished, stop the 6#, 7#, and 8# belt conveyors and place the unloading trolleys. 6.3.7 After all equipment has been stopped, stop the cone and break the oil station. 6.3.8 Clean the environment and equipment hygiene of this post.

6.4 Emergency stop

6.4.1 Emergency parking can only occur in the event of major equipment and personal accidents and hidden dangers. 6.4.2 When emergency stop, you can directly stop the faulty equipment and then stop other equipment. 6.4.3 After emergency parking, it is necessary to contact relevant positions in time and report to the superior.

6.5 Driving after emergency stop

6.5.1 Due to the load during emergency stop, it must be manually started on site when driving again. 6.5.2 When driving after emergency stop, one device must be started at the site; when one device is completely normal, and all the materials on it are processed, start the next device. 6.5.3 When driving, if necessary, manually remove the remaining materials from the equipment.

6.6 Normal operation and inspection

6.6.1 Normal operation 6.6.1.1 When the forklift enters the mine, the ore should be strictly distributed according to the proportion of the ore, and the ore should be evenly distributed. 6.6.1.2 Each plate feeder should adjust its frequency conversion to ensure uniform feeding, and ensure the load of each crusher to ensure the completion of production tasks. 6.6.1.3 Observe in time whether the ore particles of each post meet the requirements, and if necessary, stop to adjust the size of the crusher discharge port.

6.7 inspection system

6.7.1 Inspection requirements: The post operator shall patrol the equipment at regular intervals according to the inspection route and project. After confirming the error, dial the inspection clock and carefully make the inspection record. If the equipment is found to be malfunctioning or the equipment is defective, the cause should be checked immediately and disposed of; if it cannot be handled, the relevant personnel should be contacted immediately for treatment; in case of emergency, decisive measures should be taken and reported. Issues that cannot be processed and not processed should be registered and reported to the relevant personnel, and the next shift should be clearly explained. 6.7.2 Inspection route: Mine→Unloading hopper→1#Belt machine→1# silo→1#, 2# plate feeder→ jaw crusher→2#belt conveyor→2# silo→3# , 4# belt conveyor → vibrating screen → 5 # belt conveyor → 3 # silo → cone breaking → 6 # belt conveyor → 7 #, 8 # belt conveyor. 6.7.3 Inspection frequency: 1 time / h. 6.7.4 Inspection contents 6.7.4.1 Whether the temperature of each motor and the running bearing temperature are normal. 6.7.4.2 Lubrication of each lubrication point, whether there is oil leakage, oil level and oil quality meet the requirements. 6.7.4.3 Whether the safety protection devices are complete, flexible and reliable. 6.7.4.4 Are the fasteners and bolts loose, and whether there are abnormalities such as vibration and abnormal noise. 6.7.4.5 Whether the electrical appliances and instrumentation equipment are operating normally. 6.7.4.6 Whether the process control points are normal and whether the materials are leaked. Whether the belt is off-track. 6.7.4.7 Is the crusher current within the normal range and the crusher load appropriate? 6.7.4.8 Is there any other abnormal situation?

6.8 exception handling

7 Safety requirements

7.1 Strengthen the inspection of equipment. It is strictly forbidden to carry out sick or over-load operation of all equipments. When the equipment is running, it is not allowed to carry out cleaning work to prevent injury. When the equipment is operated or repaired, it can be stopped and listed.

7.2 When directing the forklift to feed, the person must be away from the hopper to prevent the forklift from injuring people. The commanding ore-mining personnel must not enter the forklift operation area to prevent the forklift from rolling or the pile collapsed, nor leave the job without permission. The forklift must be ensured. When the driver is working in an empty mine, there is a commander at the scene.

7.3 In case of hopper blockage, it is generally not necessary to clean up, but it can be naturally cleared. If it is necessary to clean up the personnel, the person must stand on both sides during the process of material accumulation, and must not enter the hopper in violation of the rules. After the safety measures such as stopping the forklift driver and putting down the safety guardrail, it is necessary to place the wooden springboard on the lower hopper panel and then perform the clearing operation.

7.4 Inspection shall not stand on the running equipment. If abnormal sound is found, it must be stopped immediately and contacted for maintenance. When checking the motor temperature, the surface of the motor must be touched by hand to prevent electric shock. During the operation of the motor, overheating is strictly prohibited. It is necessary to find that the temperature rise is too fast. Stop in time and report to the squad leader to contact the electrician for inspection.

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7.6 When handling the bottom of the feeder, there must be two people operating, and tools such as iron shovel must be inspected to prevent equipment damage caused by falling into the smashing machine. When the feeder motor and reducer are hygienic, they must be cleaned after stopping, and prevent the lump ore on the panel from falling and injuring people during the process of cleaning the bottom material.

7.7 Clean the iron block on the electromagnet in time to prevent damage to the equipment inside the crusher. There must be a guardian during the cleaning process. The belt and electromagnet must be stopped and must be listed.

7.8 During the driving period, the cone crusher inspection must be taken care of. The ground pit has accumulated water to prevent slipping. The ladder is steep and prevents falling. The cone crusher must be stopped before it can be sanitized. 7.9 When cleaning the inlet of the cone crusher, be careful not to drop the long brazing tools into the crushing chamber. When the feeding bucket is to be lifted, the hopper must be fastened with a firm wire rope. Lifting is carried out. When lifting, the bottom is strictly forbidden to stand. The driving operator should slowly lift to prevent the wire rope from falling off and hurting people.

7.10 The belt operator must wear tight-fitting tight-fitting clothing, and the sleeves should not be opened to prevent the wounds from being caught in the belt, and the tools such as brooms and brooms can be brought into the belt machine during the hygienic process. Body injury.

7.11 The belt operator should contact the maintenance personnel for treatment when the roller or the like is not turned or damaged, and must be stopped for treatment. If you have to stop by yourself and have a guardian present, you should not extend your hands, arms, body and head into the inside of the belt frame to avoid injury or death.

7.12 During the operation of the belt, it is forbidden to repair and repair. When correcting the running deviation of the belt, cleaning the drum, roller and other running parts, it should be stopped. During the belt running, it is forbidden to use the hand or other tools to shovel and scrape the tension on the drum.

7.13 During the opening process of the equipment, it is strictly forbidden to dismantle the safety protection device for mine cleaning and cleaning. It is strictly forbidden to stand on the opening equipment. If the foreign object enters the smashing machine, it must be stopped for emergency treatment, and contact the maintenance personnel to check that the equipment is normal before opening.

7.14 When cleaning the deposit on the vibrating screen, it is necessary to stop and hang the card. At the same time, the guardian is set up. When the person stands still, the belt and the vibrating screen must be listed when cleaning the belt and the hopper under the vibrating screen. The operator can work after fastening the seat belt. .

7.15 The fan cover of each motor should be kept unblocked, and no material should be accumulated. If it is, it should be cleaned up after stopping.

7.16 It is strictly forbidden to put tools such as shovel on the side of the hopper after the feeding personnel are sanitized to prevent damage to the feeding disc caused by falling into the bucket.

7.17 When inspecting equipment such as couplings, be sure to take care of the gloves and clothes. Check the coupling bolts and motor base bolts after stopping. 7.18 The equipment must be stopped and the power is off and listed before the dust removal fan pipe is cleared.

8. Safety technical regulations

8..1 Belter Safety Technical Regulations

8.1.1 Before starting the machine, a serious maintenance inspection must be carried out on all parts of the machine. It is necessary to pay attention to whether there are people and other sundries on the belt. You can signal to drive when there is no problem checking. When the multi-section belts are connected in series, the driving sequence is sequentially started from the discharge end to the feeding end.

8.1.2 After starting the machine, first idle for 3-5 minutes, and the load can be exercised after checking that the parts are normal.

8.1.3 After the belt conveyor is running, the operator must concentrate on the idea, stick to the post, and watch the belt personnel to patrol along the line frequently, find problems and eliminate them in time. It is forbidden to wear fat clothes when the belt is inspected. It is forbidden to change the lighting bulb above the belt when the belt is running.

8.1.4 If abnormal phenomena such as belt deviation, slippage, and jump are found during operation, adjustments should be made in time. It is strictly forbidden to plug things between the runner and the belt when the belt is slipping. The belt tension is not suitable, and the tensioning device should be adjusted in time. It is forbidden to use the tool to pass the belt when the belt is deflected.

8.1.5 During operation, it is necessary to check whether the motor, gearbox, transmission gear, bearing bush, coupling, transmission belt, roller, idler, etc. are normal; whether the cleaning scraper and brake device are effective, and the system of the upstream down belt The moving device must be absolutely reliable to prevent flying.

8.1.6 Each part of the belt frame must be firmly connected without cracks, deformation or abnormal sound.

8.1.7 Always check the grounding protection and insulation of electrical equipment. The motor is often measured and inspected by the instrument and regularly maintained.

8.1.8 During mechanical operation, it is strictly forbidden for anyone to walk across the belt. No matter whether the belt is running or not, it is forbidden to cross the belt or stand on the belt. It is strictly forbidden to ride the belt and sleep on the belt.

8.1.9 When the belt is running, it is forbidden to use the leakage between the tail of the tool joint. The head and tail wheel and the belt have foreign objects, and it is strictly forbidden to take them during operation. It is strictly forbidden to clean the accumulated belts on the guide rollers when they are running. It is forbidden to touch the running roller and other running parts with gloves.

8.1.10 Feeding on the belt must be uniform to prevent excessive feeding and crushing the belt, which affects the safe operation of the machine.

8.1.12 It is strictly forbidden to park the truck during operation (except for emergency): If the power is suddenly lost, the tension switch should be pulled up immediately.

8.1.13 Before stopping the machine, the feeding should be stopped first, and all the materials on the belt should be discharged before the signal can be stopped. When the multi-section belts are connected in series, the parking sequence is stopped from the feeding end to the discharge end.

8.1.14 After the machine is inspected at the same time, it is necessary to pay attention to the cleaning work, and carefully fill in the operation record of the work shift, and clearly clear the situation on duty. To overhaul the belt conveyor, all belt conveyors for electric drive must fill out the power failure notice, and then check the power failure notice of the duty electrician before checking and repairing the card.

8.1.15 During mechanical operation, emergency parking must be carried out when: 1. A life injury or death occurs, 2 belts are torn open, broken or broken, 3 belts are stuck, 4 frames are tilted, collapsed or severely deformed, 5 motor Smoke, the temperature is too high, the 6 transmission gear is broken, and the shaft is broken. 7 mechanical bearings, bearing bush burned. One of the 8 belts was connected in series and one of them failed. 9 Other accidents occurred.

8.1.16. When the belt conveyor is long and the whole position of the belt conveyor cannot be observed at the starting position, the following rules must be observed when starting the belt conveyor: 1 When starting the belt conveyor, there must be more than two people, one person operating the control button, the rest Personnel are arranged next to the belt conveyor for monitoring; 2 All personnel who start the belt conveyor must maintain normal communication or agree on a valid contact method; 3 The person who starts the belt conveyor must be able to observe all positions of the belt conveyor in all directions. 4, can not leave a dead end; 4 people who operate the control button must be connected to all the guardian can drive the signal before the start of the belt conveyor; 5 in the side of the belt conveyor, the guardian must perform the guardianship duties carefully, confirm the scope of the guardianship After there is no problem inside, the driving control signal can be sent to the operation control button personnel. Before the belt conveyor is started, it must be ensured that there is no safety hazard that affects the driving of the belt conveyor within the scope of monitoring. If an abnormal phenomenon suddenly occurs, the parking control signal must be immediately sent to the operation control button personnel; 6 The operator of the operation control button must stop immediately when receiving any parking signal; 7 When the belt conveyor starts normally, run for 2-3 minutes, after confirming normal The guardian can leave, and the operator responsible for the belt conveyor is responsible for inspection and operation and maintenance.

8..2 Safety technical regulations for jaw crusher

8.2.1 Wear protective protective equipment before driving; perform a system check on the crusher: whether there are any large objects stuck in the discharge opening, whether the flywheel cover is properly placed, the belt tension is tight, and the main parts and bolts are tight and the lubrication is tight. Wait, if you are sure that you are correct, you can drive.

8.2.2 Before driving, first open the dust removal equipment , then open the belt conveyor, and then open the crusher; when the mine is feeding, it is strictly forbidden to operate the electrical equipment with wet hands.

8.2.3 When the equipment is running, it is strictly forbidden to stand on the machine and peep at the discharge port.

8.2.4 Any adjustment, cleaning or overhaul work is strictly prohibited during the operation of the equipment.

8.2.5 When the equipment is in operation, the large block of the inside of the machine cavity should be monitored on the spot; when the stone is used to treat the stone, the person should stand on the side and slap the tiger's mouth. It is strictly forbidden to move directly by hand.

8.2.6 During operation, check the gear plate, anchor bolts, springs and other components for looseness caused by vibration.

8.2.7 The electrical equipment of this equipment should be grounded. During operation, the current and voltage should be observed regularly within the normal range. Note that the motor temperature must not exceed 60 degrees.

8.2.8 Shutdown maintenance or temporary processing of large blocks in the machine cavity, it is necessary to hang the warning sign of “someone overhaul, no closing” on the start switch. The sign of the brand must be the same person. It is strictly forbidden to start regularly.

8.2.9 Automatic tripping of electrical cabinets It is strictly forbidden to start before the cause is found and the fault is eliminated.

8.2.10 When the machine is shut down, the rock in the tiger's mouth should be stopped before stopping; the stop should be stopped after the start, and the first stop after the start; it is strictly prohibited to directly pull the knife switch on the control cabinet to stop the power.

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