Due to mineral resources large development and utilization , available resources continue to decline, resulting in taste dwindling of ore mining, smelting and subsequent processing is increasing the quality requirements of the dressing products. At the same time, human increase awareness of environmental protection. These realities of ever-increasing demands on the processing equipment, promote mineral processing equipment to keep the bigger, better direction and energy efficient development.
Kaolin is a family of clay minerals in general, the basic composition as kaolinite, kaolinite group and water group, mainly composed of kaolinite, halloysite, and content of up to more than 90 percent, followed by hydromica, often mixed with pyrite, limonite, anatase, quartz, chalcedony, alum, and sometimes a small amount of organic matter. Kaolin has plasticity, bonding, sintering, and fire resistance, excellent process characteristics, it is widely used in ceramics, paper, rubber, plastics and refractory industries. Genetic types of kaolin deposits are mainly three types: type of weathering, sedimentary and hydrothermal alteration type.
Kaolin ore processing
Kaolin ore processing depends on the nature of the ore and products end-use. Process applications in industrial production in two ways: the dry process and wet process, usually the hard kaolin production use dry method processing while soft kaolin adopts wet production.
Kaolin ore ultra-fine grinding
Kaolin have high fineness requirements in order to meet the paper, plastics and rubber products industry, it is necessary to increase the fineness of the kaolin, to improve the quality of the product. Ultra-fine grinding process mainly grinding stripping, high pressure extrusion method, air crush France.
Kaolin ore calcination processing
Calcination is to improve the the Kaolin performance of special processing methods. The paper coating industries using calcined kaolin can increase the scattering power and cover rate, improve the speed of the ink absorptive. For cable filler can increase the resistivity of synthetic 4A zeolite, the production of aluminum chloride, cryolite industry, calcined kaolin can increase the chemical activity. High temperature calcination can increase the whiteness, to partially replace the price of expensive titanium dioxide. Calcined to produce mullite. Measures Kaolinite calcined essential process, the removal of carbonaceous due to calcination can improve the whiteness.
