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With the increasingly depletion of mineral resources and the market competition is becoming increasingly fierce, how to fully and effectively use limited resources, improve the market competitiveness of enterprises, realize the informatization and automation of production process is processing enterprises in China to deepen reform, production and technical level must be the road. The quarry crusher machine is one of the main equipments in mines, because of the crushing machine with crushing ratio, high yield, less energy consumption, product size uniform characteristics, widely used.
In recent years, a number of domestic and foreign manufacturers from product structure of this kind of equipment constantly to improve and perfect, achieved good results, and have launched many efficient, reliable, energy-saving new products. In comparison, influenced by the development level of automation, the domestic research in the control of the crusher is relatively backward. In recent decades, foreign in some products, equipped with a corresponding detection instrument and automatic control device and protection equipment, stable operation, improve the yield has played a certain role. Automatic control system using cascade control, greatly improves the dynamic quality of the system, give full play to the crushing machine and process capability. In addition, due to the stability of the broken condition, and ultimately improve the overall operating efficiency of magnetic separation, screening and process.
In mineral processing, grinding and classification is an essential important processes and the quality of the work of the state of mineral processing index, energy consumption and production cost is very important, is directly related to the mineral processing production processing, grinding of mineral products quality, for subsequent operation indicators and the ore dressing plant of economic and technical indicators have great influence. In order to fully tap the grinding ore grading work of internal force for efficient efficient way, automatic control of grinding and classification test and research has very important significance. Grinding ore grading system has four major technical indicators: ball mill and processing capacity, grinding size, grinding concentration and the overflow concentration. Effect of these technical indicators include and discharging water, return sand content, mill filling rate and other factors, in addition to the ore properties. Therefore, it is necessary to the grinding classification system implementation of automatic control, the purpose is to increase sales of mill, the stability classification of overflow particle size and sorting operations provide qualified overflow.