Calcined kaolin price

The main advantage: due Kaolinite high purity, low content of harmful elements, so the only treatment process is simple, and high whiteness, whiteness can reach an average of 93%, the maximum brightness can reach 97%, for paper coating can be improved cloth paper whiteness, partially replace titanium dioxide, can reduce costs. High sticky concentration up to 74%, dispersion, and natural and synthetic adhesives and other additives formulations have good compatibility, can coatings with good rheological properties, particularly suitable for the machine and other requirements of high solid content coating coating machine. Wear low value material is heated evenly, and never will be partial over-burning, tested abrasion value is only 3.6mg / 2000 times. Compared with non-calcined kaolin calcined kaolin, calcined kaolin combine low water content is reduced, silica and alumina levels were increased, increasing the active sites, structural changes, smaller particle size and uniform, filled with non-calcined kaolin Compared to NR compounds, low temperature curing curve calcined kaolin filled NR compounds are basically the same, unchanged shore A hardness, tensile strength increases, the physical properties of the two have reached a non-transparent soles of sneakers industry standards Introduction Kaolin is an inorganic non-metallic mixture, calcined kaolin clay is to be sintered to a certain temperature and time in the calciner to the physical and chemical properties have some changes in order to meet certain requirements. Compared with non-calcined kaolin calcined kaolin, calcined kaolin combine low water content is reduced, silica and alumina levels were increased, increasing the active sites, structural changes, smaller particle size and uniform, filled with non-calcined kaolin NR compound compared to low temperature curing characteristics of calcined kaolin filled NR compound curves are basically the same, unchanged Shaw A hardness, tensile strength increases, the physical properties of the two have reached a non-transparent soles of sneakers industry standards. Recently ceramics, rubber, plastics, leather, since the cement, refractories, chemical and other industries and agriculture have no wider application. With further increase of high sandfly soil beneficiation process, kaolin will become increasingly wide range of applications. Coal Geological system equipment units, starting from the actual situation, based on the coal strata kaolin resources and market demand. Kaolin is ubiquitous in nature a non-metallic mineral, in the past generally used for the production of ceramics, refractory materials and a small amount incorporated into plastics, rubber filler ashamed. With the increasing development of the national economy in various fields, there is a growing emphasis on the depth of processing kaolin, because it not only to acquire new materials with special properties, but also improve economic efficiency. One stern methods of kaolin processing, washing and soon Pat tough weed kaolin mill drying step further heating, roasting, dehydration, make it into metakaolin, used plastic cable filler families to improve cable sheath insulation performance. Footwear rubber filler used mainly two inorganic fillers and organic fillers, the former including recycled rubber and recycled materials, the latter including silica, calcium carbonate, titanium dioxide, magnesium carbonate, magnesium oxide, carbon black and zinc oxide powder. Kaolin is developed in recent years a new type of rubber filler. However, all applications must be subjected kaolin processing into powder, can be added to other materials, fully integrated. Whiteness is one of the main parameters of kaolin process performance, high purity kaolin is white. Kaolin whiteness points natural whiteness and whiteness after firing. Ceramic materials, the calcined whiteness is more important, the higher the quality of calcined better whiteness. 105 ℃ drying ceramic technology provides the natural whiteness of grading standards, calcined calcined 1300 ℃ for the grading standards of whiteness. Available white whiteness meter measurement. White meter is a measure of 3800-7000 & Aring; (ie Egypt, 1 angstrom = 0.1 nm) The wavelength of light reflectivity. In the white meter, the test sample and the standard sample (such as BaSO4, MgO, etc.) compare the reflectivity, that whiteness value (such as brightness means that the equivalent of 90% of the 90 standard-like reflectivity). Brightness and whiteness is a process similar nature, the equivalent of 4570 & Aring; whiteness (angstrom) wavelength of light irradiation. Its main color of kaolin contained metal oxide or organic matter concerned. Generally contain Fe2O3 in rose red, brown and yellow; with Fe2 + was light blue, light green; with MnO2 pale brown; containing organic matter is pale yellow, gray, blue, black and other colors. These impurities, reducing the natural whiteness of kaolin, in which iron, titanium minerals also affect the calcined whiteness, make porcelain fused pigmentation or scar. Particle size distribution refers to natural kaolin particles to different grain size (in mm or micron sieve mesh representation) ratio within the range given by continuous in (expressed in percentages). Particle size distribution of kaolin is significant optionality and process applications for ore particle size, its plasticity, mud viscosity, ion exchange capacity, forming properties, drying properties, firing properties have a significant impact. Kaolin mining technology need to be processed, ease of processing to the required fineness of the process, has become one of the criteria for evaluating the quality of ore. Various industrial sectors for different uses kaolin has a specific particle size and fineness. Such as the United States claim as a coating kaolin content of less than 2μm1 it accounted for 90-95%, filler paper accounted for 78-80% less than 2μm. Combines with water to form kaolin clay material, capable of deformation under external force, the external force is removed, still maintain the nature of this deformation is plasticity. Plasticity kaolin forming the basis of the process in the ceramic body, is also a major technology index. Usually plasticity index and plasticity index to indicate the size of plasticity. Liquid limit plasticity index is kaolin clay material moisture content minus the plastic limit moisture content, expressed as a percentage, that W plasticity index = 100 (W -W liquid limit plastic limit). Plasticity index representative of kaolin clay material formability, plastic instrument with direct determination of the size of the load and deformation of broken mud balls under pressure when available, in kg · cm, said plasticity index is often higher, the better performance of its shape. Kaolin plasticity can be divided into four. 1. The main application areas 1. Paper, paint can replace some of the expensive titanium dioxide. 2. Paint, water-based latex paint. 3. Rubber and special cables reinforcing agents, 4. Industrial plastic functional filler, 5. Inks, foods, medicines, cosmetics packing. 6. High white porcelain and special advanced ceramic materials.