Factors affecting the selection of the beneficiation process
(1) Product plan and product quality index This is an important part of the design work. When researching product solutions, it is first necessary to do a good job in the forecasting of domestic and foreign markets and the investigation and research of product sales, and then determine the comprehensive recycling plan for construction projects according to the needs of the country and the market, the possibility of technology and economic rationality. Product quality must meet market requirements. Comprehensive recovery and utilization is an effective way to effective use of resources, increase production of metals and industrial minerals, can greatly increase the economic efficiency of enterprises and the economic value of the deposit. Therefore, comprehensive recycling should be achieved as much as possible during design. (2) Pre-enrichment based on the structural characteristics of the ore, using useful minerals and gangue minerals Differences in physical properties, such as particle size composition, shape, brittleness, density, magnetic rate, reaction and color of radioactive elements, etc., based on the test, the design can be added to the appropriate position in the crushing and grinding process. Selecting operations, pre-enrichment, abandoning a large number of gangues to improve the grade of ore selected, saving equipment and energy consumption, reducing production costs and reducing capital investment. The pre-selection operations widely used in China's existing concentrating plants include sorting (hand selection, radioactive sorting, photoelectric sorting and fluorescence sorting), heavy medium sorting, magnetic pulley pre-selection and washing, etc. For the ore with low grade, ore. Ore with higher clay content and moisture content or ore with soluble salts and primary slime should fully consider the pre-selection operation. (3) Energy conservation The energy conservation problem must be considered when formulating the process. In the conventional grinding process, multiple crushing and grinding should be considered to minimize the grain size of the grinding machine. Avoid over-grinding during the grinding process. According to the embedding characteristics of the ore, the stage grinding process is adopted as much as possible. (4) Scale of the concentrator In general, small concentrators should not adopt complicated processes. Conversely, in the case of the same ore, large-scale concentrators can use more complex processes. This is mainly related to the economic benefits of the concentrator. (5) The climate and technical and economic conditions of the construction area, such as dry and cold areas, should choose a process with low water consumption or a dry sorting process. (6) Environmental protection design process must also pay attention to environmental protection, especially to prevent environmental pollution caused by dust, poisons, waste water, waste residue, noise, radioactive materials and other harmful substances, and comprehensively manage and utilize it so that the design conforms to national regulations. standard. In short, the choice of process flow should be based on the full test, combined with the above various factors to carry out the technical and economic comparison of multiple programs, so that the main problems in the process can be reasonably solved, and the optimal plan is selected.
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