In the process of selecting kaolin, the raw ore is first made into clay, which decomposes the minerals in the water in the form of granules of micron size or even smaller. In order to separate kaolinite minerals from impurities such as quartz, feldspar, mica, pyrite and ilmenite, clay particles must be divided into fine, medium and coarse particles. In order to achieve better dispersion effect, appropriate dispersants are sometimes added. Only when the mineral particles are completely dispersed can the mineral particles in the pulp be effectively graded and selected.
Sand removal: sand removal is mainly to remove impurities such as quartz, feldspar, mica and other impurities such as mineral debris, and remove some iron and titanium minerals. Commonly used rake floating classifier, spiral classifier, hydrocyclone and vibrating screen.
Classification: classification is the separation of minerals by the size or density of their particles. If the mineral particle size of slurry is larger, it is generally classified by sieve. If the mineral densities are similar, the mineral densities are selected according to their differences. Commonly used grading equipment is water hammer, hydrocyclone, centrifuge and so on.
Magnetic separation: almost all kaolin ores contain a small amount of iron ore, mainly iron oxide, ilmenite, siderite, pyrite, mica, tourmaline and so on. These colored impurities are usually weakly magnetic, which means that magnetic impurities can be used to remove these harmful impurities. Magnetic separation is a method to separate mineral particles in magnetic field by using the magnetic difference of minerals. Removal of highly magnetic minerals such as magnetite and ilmenite may be more effective in processing. The company specializes in degaussing equipment, including dry iron remover, wet magnetic separator and other magnetic separation equipment.
Flotation: the purification of kaolin by flotation is widely used. At present, the process and equipment are constantly improved and updated to make the whiteness of kaolin higher and meet the industrial needs. The company has a professional mineral flotation machine.
Bleaching: kaolin used as a pigment, filler, and paint, its brightness and brightness directly affect its value. Bleaching is the use of different methods to increase the whiteness of kaolin. The specific methods include magnetic separation bleaching, flotation bleaching, chemical bleaching, etc.
Ultra-fine grinding: in order to meet the high fineness of kaolin in papermaking, plastic and rubber products, it is necessary to improve the fineness of kaolin to improve the quality of products. Ultra-fine grinding technology mainly includes grinding stripping, high pressure extrusion and air grinding. The company has a strong ultrafine grinder, high - pressure wind mill, Raymond mill.
Calcining: calcining is a special process for improving the properties of kaolin. Calcined kaolin in paper industry can increase the scattering force and coverage, and improve ink absorption speed. For cable packaging, the resistivity can be increased. In the synthesis of 4A zeolite, calcining can improve the chemical activity of kaolin by producing aluminum chloride and cryolite. The company has a professional industrial rotary kiln, dryer, cooling machine and so on.
Henan platinum machinery manufacturing co., ltd. specializes in the production of ball mill, crusher, mineral processing equipment, drying equipment, slime dryer, vibrating screen, magnetic separator and other large and medium-sized machinery drying equipment, welcome customers to visit the factory negotiations. The company has a sound quality assurance system, complete testing means, strict implementation of product quality commitment, quality tracking, technical training, installation and commissioning of high-quality after-sales service.
