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Click to add WeChatMining flotation machine is a kind of flotation equipment commonly used in mineral processing plants. During the flotation operation, under the appropriate conditions of feed preparation and chemical adjustment, the flotation technical indicators mainly depend on the performance of the flotation machine. and operation, so it is necessary to ensure the normal production of the flotation machine. Let's take a look at what faults the flotation machine is prone to occur during daily operations. How we can detect and deal with them in time is an important means to ensure efficiency.
Common faults and solutions for mining flotation machines:
| FAQ | Cause of failure | Solution< /strong> |
| The flotation machine motor does not start | Power failure | 1. Check whether the circuit breaker Open; 2. Check the power of the motor with a voltmeter |
| The motor is stuck | Remove the V-belt and turn the motor shaft by hand, if the motor does not Turn, replace the motor | |
| The reducer is stuck | Remove the V-belt and turn the driven sheave by hand. If the sheave does not turn, then Remove the movement and replace the reducer | |
| The flotation machine motor stalls during operation | The motor starter trips and closes | 1. The voltage is too low; 2. Check whether the current is underloaded; 3. Check whether the heater specifications of the starter are correct |
| Power failure | < td>1. Check the power supply; 2. Check the power supply of the motor with a voltmeter; 3. Check the control fuse||
| Motor control fuse failure | 1 . Whether the motor is overheated or overloaded; 2. Check the motor power supply; 2. Check whether the motor wiring is correctly connected | |
| The flotation machine motor is hot | Motor overload | Check power, current and wiring |
| Poor motor heat dissipation | 1. Motor surface; 2. Check whether the motor fan is rotating and whether all blades are in good condition | |
| The rotor speed is too high | Check the shaft speed with a tachometer | |
| There is a mechanical problem with the reducer | See question 4 | |
| The flotation machine driving device issues an abnormality The noise or vibration exceeds the standard | The bearing needs lubrication | 1. The reducer needs lubrication; or the bearing fails; 2. The motor needs lubrication; or the bearing fails |
| The rotor is unbalanced or comes into contact with other parts or a large stone or other object is trapped in the guide tube | 1. Stalled: Check whether any blades have fallen off (replace the blades if they fall off) rotor) or comes into contact with other parts, such as the disperser (repair or replace if any); 2. Check whether there is any foreign matter trapped in the guide tube | |
| There is no sheave Alignment | 1. Use the dial indicator to check whether the outer diameter of the sheave wheel is deflected; 2. Check and determine whether the motor shaft is parallel to the reducer shaft; 3. Check the driven sheave wheel and the driving sheave wheel Are they all parallel? | |
| The rotor does not rotate after the flotation machine is powered | The motor is not running | See Chapter Question 1 and Question 2 |
| The drive belt is excessively loose or split | 1. Check the belt to make sure it is intact; 2. Check Belt tension | |
| The rotor shaft is broken or detached from the reducer output shaft coupling | Check the rotor shaft | |
| The rotor speed of the flotation machine is lower than the design rating | The V-shaped drive belt is loose and slipping | 1. The belt makes sharp noises The sound indicates that the belt is slipping and the belt needs to be tightened; 2. The new belt will stretch and needs to be re-tensioned; 3. Install the new belt |
| The V-belt transmission ratio is too high Large | 1. Check whether the sheave specifications meet the design specifications; 2. Check whether the belt conforms to the groove of the sheave | |
| Motor overload | See question 3 | |
| The flotation machine does not produce foam or flotation bubbles | The disperser is connected to the standpipe Part or all of the parts are broken | 1. Movement, replace or re-fix the diffuser; 2. Make sure the diffuser is installed correctly and the fasteners are firm |
| 1. Reinstall the rotor correctly. If the wear is serious, replace it directly | ||
| Air inlet Blocked | 1. The air pipe is blocked and needs to be cleaned; 2. The air flow control valve is closed and needs to be opened | |
| The rotor does not rotate after power is supplied | ||
| td> | See question 5 | |
| The liquid level of the flotation machine is different from the initial setting value | Liquid level control Controller failure | Check whether the poppet valve responds to the controller |
| The poppet valve does not work properly | 1. Check the valve shaft If there is a sudden jump, it indicates misalignment or corrosion; if the valve does not move, it indicates controller failure; 2. Check whether the air supply of the valve is leaking; check whether the actuator air pressure is sufficient; 3. The poppet valve may be due to Excessive wear of the gasket ring causes leakage; 4. It is usually closed when the power is off, check whether the valve is open; 5. Check the air supply pressure of the controller; check whether the pneumatic signal sent to the actuator is correct | |
| Unintentional error when resetting the controller after temporary changes | 1. Reset the correct set point; 2. Avoid changing the set point due to temporary changes in the slurry flow | |
| The poppet valve assembly of the flotation machine vibrates | Oversized particles of minerals or larger foreign objects flow into the flotation machine, resulting in Interrupt the slurry flow | Manually operate the poppet valve to the fully open position to allow oversized mineral particles or larger foreign objects to pass, and then return the poppet valve to automatic mode | The poppet valve may be loose | Stop the operation, empty the flotation tank and connect the (discharge) box and secure the poppet valve |
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