Ore dressing and grinding process for alumyte

Abstract

The present invention relates to ore concentrating and grinding process, and is especially bauxite concentrating and grinding process. The present invention adopts two-stage closed loop bauxite grinding process, including the first stage of lattice type grinding and the second stage of overflow type grinding. The said technological process has the final bauxite grinding product possessing 0.010 mm below component content lowered from 30 % in available technology to about 15 % when the 0.074 mm below component content is in 65-75 %.

Description

Technical field [0001] The invention relates to a beneficiation and grinding process, in particular to a bauxite beneficiation and grinding process. Background technique [0002] Bauxite beneficiation technology was industrialized in 2003. However, in actual production, due to the polarization of the particle size of the grinding products, the filtration capacity of the flotation concentrate is low, and the flotation tailings are difficult to settle and dehydrate, which restricts the further improvement of bauxite beneficiation indicators and causes tailings to discharge. Security environment issues. [0003] The existing bauxite concentrator adopts one-stage closed-circuit grinding, and the grinding machine adopts an overflow type ball mill. The grinding fineness is -0.074mm, accounting for 70-75%. Such as figure 1 As shown, the existing grinding process is as follows: the raw ore is classified by an overflow ball mill, the overflow enters the next process, and the returned san...

AI Technical Summary

Problems solved by technology

Under the condition of -0.074mm 70-75%, the -0.010mm content accounts for about 30%, and the -0.010mm content is high, resulting in poor filtration performance of the flotation concentrate, low filter productivity, difficult tailings settlement, and sorting operations. The intensification of mechanical inclusions makes it difficult to further improve the beneficiation index

Images