Refractoriness of refractory brick

Mainly composed of special level bauxite chamotte as starting material and assisted with special additives, the brick are processed by moulding under high pressure and sintering under high temperature, with features like large heat accumulating capacity and small creep rate. They are avail able for blast hot stove matched of middle and small blast furnace.

Fused cast high zirconia block is an important nozzle refractory in glass industrial, it can be used in a wide range of glass furnace, especially high quality and special glass furnace such as TVglass, Borosilicate glass, Alumina silicate glass, Halogen lighting glass, Opal glass and Fiber galss, and it mainly used for glass sidewall, throat, dry vibration mix electrodes brick and the weir block, etc.

Refractoriness is different from melting point, melting point is the balance temperature that materials reach to melting point which is between solid and liquid crystal, however, refractoriness is a process in which the solid phase of the material is gradually dissolved in the liquid phase and finally is melted with the increasing temperature.

The chemical and mineral composition, distribution and combination of each phase have a decisive influence on refractoriness of zirconium sizing nozzle refractory, such as fused cast azs block, fused cast alumina block, fused cast high zirconia block. All kinds of impurities can seriously reduce the refractoriness, so it is pretty important to improve the purity of raw material and strictly control the content of impurity.

However, in actual application, besides the high temperature, refractory is also corrosive by other impurity, working environment is quite complicated, so refractoriness is used as a reference, and can not be more accurate data.

Henan Xinmi Changxing Refractory material Co., Ltd. our product portfolio covers shaped products such as refractory brick,refractory castable, refractory nozzle, ceramic fiber, slide gate, etc;