The chemical composition of refractory materials refers to the compounds that constitute refractory materials, also known as chemical composition. Generally speaking in Castable Refractory Material Suppliers, different refractories have different chemical compositions, and each refractory can be divided into two parts according to the content of each component, one consisting of the basic component which is the majority and the other consisting of the minor impurity component. Refractory materials, usually need to determine the composition of AI2O3, SiO2, Fe203, CaO, MgO, Ti02, Na20, K2O, etc. For carbon containing refractory and silicon carbide refractory, carbon and silicon carbide is also an important chemical composition in Castable Refractory Material Suppliers.
What is direct binding?
A type of binding produced by direct contact of refractory main crystal phase is called direct binding, which is different from chemical binding and does not belong to ceramic junction. Directly combined products generally have higher mechanical strength at high temperature, slag resistance and volume stability are also good in Castable Refractory Material Suppliers. Such as the direct combination of magnesia chrome brick, magnesia stone and magnesia stone, magnesia stone and magnesia chrome spinel direct combination.
What is chemical binding?
Chemical binding refers to the binding formed by chemical binder in refractory products. That is to add a small amount of binding material, under the condition of lower than the sintering temperature, a series of chemical reactions occur to harden the product and form a combination. This combination is common in unfired refractory products in Castable Refractory Material Suppliers. Its formation and properties depend mainly on the properties of the chemical binder used. Some products can be hardened at room temperature; Some need to be heated to the right temperature before. Some need to be heated to the right temperature to make the product a certain strength in Castable Refractory Material Suppliers.
What is ceramic bonding?
The main crystal phase of low melting point silicate amorphous and crystalline bonded together and formed a combination is called ceramic binding in Castable Refractory Material Suppliers. For example, the combination between magnesite and magnesite in ordinary magnesite brick is the ceramic combination formed by low molten materials such as magnesite calcium olivine or magnesite rosaceite. The sintering of such products is completed with the participation of liquid phase. The properties of ceramic binding components and their distribution in the main crystal phase have great influence on the properties of refractory products in Castable Refractory Material Suppliers.
