What's the difference between kaolin and clay?
Clay:A hydrous aluminosilicate mineral that is a widely distributed colloidal, amorphous, cohesive soilIt is plastic when wet and hard when it is bakedIt is mainly composed of igneous and metamorphic rocks is decomposed, consisting essentially of kaolin and other minerals in bauxite.Clay has a unique plasticity and bonding properties, that is, molding properties and firing propertiesConclusion: clay ceramic material is a hydrous aluminum silicate minerals, from feldspar rock through long-term weathering and geological formation. It is a mixture of many fine minerals, the main chemical composition of two aluminum oxide and silicon dioxide, three crystal water, with a small amount of alkali metal, alkaline earth metal oxides and oxide coloring. Clay has a unique plasticity and binding, the water swelling can be kneaded into mud, shaping the required shape, after roasting becomes hard and compact. This performance, form the basis of the ceramic production process. Clay is the basic material of pottery and porcelain production, widely distributed in nature, large reserves. Variety, is a valuable natural resource.
Kaolin is mainly composed of less than 2 microns of small flaky, tubular, laminated and other kaolinite cluster mineralsKaolinite minerals: cluster by kaolinite, dickite, nacrite, halloysite etc., chemical formula and ideal for AL2O3-2SiO2-2H2O, the main mineral is kaolinite kaolinite and kaolinite mineral water, in addition to the cluster, and montmorillonite, illite, Ye Lashi, quartz and feldspar and other minerals associated with the chemical constituents in the kaolin. Contains a large number of AL2O3, SiO2 and a small amount of Fe2O3, TiO2, Na2O, K2O and trace amounts of CaO and MgO.
White pottery is made from kaolin. Now the international general kaolin scientific name --Kaolin, is the source of the eastern suburbs of Jingdezhen Gaoling village of Gaoling mountain.Kaolin plasticity, adhesion, certain drying strength, sintering and sintering whiteness and other special properties, make it become the main raw material of ceramic production; white, soft, high dispersion, adsorption and chemical process with excellent performance, which was widely used in papermaking industry. In addition, kaolin also is widely used in rubber, plastic, refractory material, petroleum refining industry, agriculture and national defense technology field. According to the purpose and need for processing, processing and purification, all of them can be used to produce activated clay.
