Raw Materials For Refractory Materials

Refractories refer to materials with high wear resistance, slag resistance, erosion resistance, high temperature stability and chemical erosion resistance in harsh environments such as high temperature and strong acid and alkali. Refractories are made of silicon, aluminum, magnesium, calcium, zirconium and other main raw materials through batching, molding, sintering and other processes. The raw materials of refractories will be introduced in detail below.A, silicate raw materialsSilicate raw materials are the main source of silica in refractories. They include quartz sand, wollastonite, siliceous rocks, etc. Quartz sand is the most commonly used among them. Silicate raw materials have the characteristics of good high temperature stability, excellent processing performance and outstanding sintering performance.

Second, alumina raw materialsAlumina raw material is the most commonly used alumina source in refractories. They include aluminum oxide powder, white corundum, mullite, glass ballast, etc. Among them, aluminum oxide powder is the most commonly used, but because of its high price, other cheap alumina raw materials are being used more and more.

Third, magnesium raw materialsMagnesium raw materials mainly include light burned magnesium, magnesite, lens stone, pure sandy magnesite and so on. Light-fired magnesia is one of the most commonly used magnesia raw materials. Magnesium raw materials have the characteristics of good high temperature stability, high mechanical strength, excellent erosion resistance and so on.

Fourth, silicon diamond raw materials 

Silicon diamond material is a new type of refractory material. They include microcrystalline silicon diamond, crystalline silicon diamond and polycrystalline silicon diamond. Silicon diamond raw materials have the advantages of high fire resistance, corrosion resistance and high mechanical strength.

Five, other raw materials

In addition to the above main raw materials, the raw materials of refractories also include processing quartz, calc stone, lead pyroxene, transparent ceramics, silicon nitride and so on. These raw materials have different characteristics and scope of application, widely used in the production of all kinds of refractory products.In summary, the raw materials of refractory materials are mainly divided into silicate, alumina, magnesium, silicon diamond and other raw materials. The selection and use of these raw materials need to be reasonably matched according to the specific situation to meet the needs of different occasions. With the wide application of harsh environments such as high temperature and strong acid and alkali, the demand for refractory materials is also increasing, and the stability, quality and price of raw materials are also getting more and more attention from manufacturers.

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