Henan Lite refractory bricks are made of refractory clay or other refractory raw materials. Pale yellow or brown. It is mainly used for building smelting furnace, and can withstand high temperature of 1580℃-1770℃. Also called firebrick. Today Henan Lite refractory bricks mainly introduce the alkaline series of refractory bricks.
Alkaline refractory bricks refer to refractory products with alkaline oxides such as Mg0 and CaO as the main components. The main varieties are as follows.
(1) Magnesia refractory bricks refer to refractory bricks with magnesite as raw material, periclase as the main crystal phase, and MgO content above 80%-85%. Its products are divided into two categories: metallurgical magnesia and magnesia products. Depending on the chemical composition and use, there are Martin sand, ordinary metallurgical magnesia, ordinary magnesia brick, magnesia silica brick, magnesia alumina brick, magnesia calcium brick, magnesia carbon brick and other varieties. Magnesia refractory bricks are the main products in alkaline refractory bricks, with high refractoriness and good resistance to alkaline slag and iron slag. It is an important high-grade refractory brick. Mainly used for open hearth furnace, oxygen converter, electric furnace and non-ferrous metal smelting.
(2) Dolomite brick is an alkaline refractory brick produced with dolomite as the main raw material. It is widely used in alkaline converters, and can also be used as the inner lining of some refining ladle outside the furnace.
(3) Forsterite refractory brick is a kind of refractory brick with forsterite 2MgO·SiO2 as the main composition. It is mainly used for checker bricks in open hearth regenerators, bricks for ingots, furnace bottoms of heating furnaces, and also has good use effects in copper smelting furnaces.
