What are the operating points of the spiral concentrator?

The operating points of the spiral concentrator are as follows:

(1) The maximum grain size of the ore is 6mm . When a large nugget enters, it will disturb the ore and block the concentrate discharge pipe. Sheet-shaped large gangue is also detrimental to the selection. Therefore, a large piece of sieve should be used before being selected. In addition, when the selected materials contain a lot of mud, the sorting effect will be deteriorated. Therefore, it is necessary to remove the mud before the mud is contained.

(2) Control the amount of ore given. When the mud-rich concentrate is finer, the amount of ore can be smaller; when the coarse-grain size of the concentrate is small, the amount of ore can be larger. The requirements for the quality of the ore supply are not strict, and the change of the quality score within the range of 10% to 30% has little effect on the selection index.

(3) Washing should be dispersed from the inner edge to avoid disturbing the ore flow, the washing water volume is large, the concentrate grade is high, but the recovery rate is reduced; the washing water is small, which is beneficial to improve the recovery rate, and the washing water should be increased from top to bottom. .

(4) The concentrate yield is adjusted by rotating the movable scraper of the interceptor. When too much concentrate is intercepted, the concentrate grade will decrease. The appropriate position of the movable scraper should be determined by sampling and testing, and then be flexible after having experience.

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