Control of Quality Characteristics of Feed for Concentration Factories

The authors propose the technological algorithm to obtain the required quality characteristics of beneficiation feed based on the estimate of useful mineral distribution and amount of gangue in a preset volume. The target useful component content is implemented by combining separation and blending of crushed ore less than 100 mm in size. It is shown that this approach to the feed quality ensures the standard content of P 2 O 5 in the feed at the level of 12.1–12.3% with dumping not less than 29% of gangue -100+20 mm in size with the content of P 2 O 5 under 1.9%. It is proved that the proposed technology for the control of quality characteristics of low-grade apatite-bearing ore has a beneficial effect on the environment in mining and processing areas.