Tungsten ore operation of centrifugal concentrator
Tungsten ore beneficiation the operation of centrifugal concentrator is important on the classification index, in the operation should pay attention as follows:
(1) stable ore feeding volume;
Stability is a common requirement for ore gravity separation equipment, especially important for centrifuge, feeding volume directly affects the size of the pulp flow rate on the recovery rate of ore concentrate and tailings grade difference. Feeding volume is too large, the flow rate of lead increased. The tailings grade ore pulp volume is too small, slow velocity, concentrate grade therefore, requirements are reduced, the constant feeding volume. It must be regulated to the mine. Mine is generally uses the constant pressure to control. Tungsten, some plant centrifuge use effect is often caused by large volume changes to the mine.
(2) stable feed concentration
The concentration changes will cause changes in the centrifuge flow and stratified membrane linger, sorting of disadvantage. The concentration is too high, will cause the concentrate of uneven thickness, tensile scouring phenomenon, with the concentration indicator, achieve stable concentration. When the concentration is high, increasing subsidies. Low concentration of water. You need the most ideal in the dehydration. To the design of automatic control system of centrifuge, or sets of high concentration pulp tank and a low concentration pulp tank according to the concentration of both to centrifuge, according to different ore product deployment, to stabilize the feed concentration through the concentration indicating device. Tungsten often use about 25% concentration.
(3) stable ore feeding granularity;
Centrifuge feed size strict control, to mine coarse grain caused by excessive grooving and concentrate uneven thickness, preferably through classification desliming, dehydration of crude to do micro. According to the narrow level selection is more practical gravity favorable, it should be possible to maintain the -10 in the 74 micron range, creating a requirement to to create good conditions for the grading centrifuge. Otherwise, feeding size is too wide, the separation index is not good, but for mine operation from chip, fiber and other harmful impurities, is also an important condition to ensure the normal operation of the centrifuge.
(4) the ore washing water should be kept clean and high pressure
To prevent blockage of pipes. The water pressure is not enough will cause flushing net lead concentrate, tailings grade increased or fine mud drum wall damage caused by long-term adhesion, film layering and movement, the formation of blockage caused by scouring. With the deflection.
(5) always check whether the ore mouth or water tap is leaking or leaking
The discovery of mine red Water Leakage mouth, that membrane valve is easy to be damaged, or low water pressure, the valve core of the diaphragm valve is not tightly closed.
(6) the broking of ore
The operation of the ore washing and ore separating device should be accurate and sensitive. When the ore is not timely, fine tailings may appear promiscuous and affect the quality
(7) check the operation of the drum at any time
And Caution!. command system of the relay should be closed to prevent electric shock.
(8) to ensure the quality of equipment
The production practice shows that the tungsten centrifuge centrifuge; to make sorting indicators higher must pay attention to the quality of equipment. The centrifuge centrifuge recovery of tungsten slime quality, with quality equipment. The quality of equipment in addition to parameter factors, the most important is the quality of assembly and manufacturing of the equipment itself. The emphasis is particularly prominent and eccentric according to the survey. The maximum eccentricity of 1.8 mm, more 7 kg. This is due to manufacturing or installation, due to the eccentric or on the existence of the centrifuge produces centrifugal force. The stress force acting on the bearing and the body, forming a vibration Park, it increases the load on the bearing.
With the increasing awareness of energy saving and environmental protection, the problem of how to solve the environmental pollution caused by the accumulation of tailings has been put on the agenda. The development of tungsten ore tailings centrifuge has a good opportunity for development