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Countercurrent continuous discharge centrifugal concentrator
Cloud tin machine's first centrifugal concentrator, since the 1960s, has been in our country, tin, tungsten, Ni, iron and other ferrous and ferrous metal ore processing plant has been widely used, has made important for the development of beneficiation cause of China contribution.
However, the long-term production practice shows that the intermittent ore-concentrating centrifugal concentrator (referred to as the inter-stage centrifuge) often seriously affects the beneficiation due to the uncoordinated action between the ore, the ore, the ore and the ore, and the abnormal operation. The effect, in order to solve this problem, based on the experience of the production of centrifuges and the continuous ore-concentrating centrifuges developed by the company in the 1960s, developed countercurrent continuous in the 1990s. Excavation centrifugal concentrator (referred to as continuous row centrifuge).
The long-term continuous operation test of the semi-industrial centrifuge proves that it has the advantages of simple structure, easy operation and management, less maintenance work and stable sorting index. It fundamentally eliminates the drawbacks of the “uncoordinated action†of the centrifuges in the centrifuge, which fully reflects the significant advancement of the centrifugal concentrator in terms of technology.
The structure of the continuous row centrifuge is shown in the figure below.
Figure
The continuous row centrifuge is the same as the inter-row centrifuge. It is a flow film dressing equipment in the centrifugal force field. The difference between the continuous centrifuge and the horizontal centrifuge is: after the slurry is fed into the drum from the feeding nozzle, the centrifugal force and the slurry flow film Under the combined action, the heavy minerals attached to the drum wall are washed by the high-pressure water of the flushing water pipe, and are discharged into the concentrate from the concentrate discharge port in time, so the equipment is continuously fed and continuously discharged. Because the concentrate is pushed out from the opposite direction of the ore flow, it is called a countercurrent continuous discharge centrifugal concentrator.
In the slime section of the new system of Yunxi Gushan Plant, 15 sets of Φ8OOmm continuous row centrifuges were installed to treat the mud sand of Φ8OOOmm dewatering bucket grit and Φ75mm cyclone. The operation results show that the beneficiation efficiency of the continuous row centrifuge is equivalent to that of the horizontal centrifuge. Because the continuous row centrifuge overcomes the disadvantages of the control mechanism being ineffective and the movement is uncoordinated in the long-term production of the centrifuge, the production index is relatively stable, which is higher than that of the horizontal centrifuge.
Due to the advantages of convenient operation, management and maintenance, the continuous row centrifuge is well received by Gushan Concentrator in the long-term production practice. However, the shortcomings of the continuous centrifuge are obvious. In order to further reduce consumption, improve technical and economic benefits, and make it more vital, the key is to develop large-scale, which is an important issue for future production, experimental research work.