The Mineral Raw Material Composition of Silicon Brick

The mineral raw material for making silicon brick is siliceous rock with SiO2 content above 96%. In addition, there are additives such as lime, mineralizer and organic binder.

1. Silica raw materials Siliceous rock is commonly called silica in industry, which is the general term for industrial bulk silicate mineral raw materials, also known as quartzite. The main mineral in silica is quartz SiO2, and the other components are all impurity minerals. The raw materials of silica used in industry include cemented silica (cemented quartzite) and crystalline silica (crystalline quartzite). 2. Waste silicon brick The fired waste silicon bricks produced in the production process of silicon bricks (https://highaluminarefractory.com/alumina-silica-fire-brick-for-sale/) can be used as raw materials, which can reduce the fire expansion of the brick blanks, thereby reducing the fired waste (increased porosity). 3. Lime It acts as a binder and combines with the quartz particles in the brick, which increases the strength of the brick after drying, while it acts as a mineralizer during the firing process and promotes the transformation of quartz. 4. Mineralizer The mineralizers used in production mainly include rolled steel skin (iron scale), open hearth slag, sulfuric acid slag, pyrolusite, etc. 5. Organic binder In order to improve the plasticity of the blank and the strength of the brick after drying, a certain amount of organic binder should be added to the blank. Commonly used is sulfurous acid pulp waste liquid.