Mullite Insulation Brick

Mullite bricks refer to high-alumina refractory materials with mullite as the main crystal phase. Generally, the alumina content is between 65% and 75%. In addition to mullite, the mineral composition contains a small amount of glass phase and cristobalite in those with lower alumina content; a small amount of corundum in those with higher alumina content. Mainly used in hot blast furnace tops, blast furnace shafts and bottoms, glass melting furnace regenerators, ceramic sintering kilns, dead-end furnace linings in petroleum cracking systems, etc.

It is made of high bauxite, industrial alumina and refractory clay, with charcoal or coke fine particles as reducing agent, and is made by reduction fusion after molding. Its Al2O3 content is about 72-74%, the apparent porosity is about 17%, the volume density is 2.58g/cm3, the compressive strength at room temperature is about 39.2Mpa, and the softening temperature under load of 0.2Mpa is 1620-1660℃. Compared with sintered mullite bricks, it has better thermal shock resistance, low thermal expansion coefficient, and strong resistance to glass liquid corrosion.

A honeycomb ceramic regenerator is a type of heat exchange device used in certain combustion systems, such as industrial furnaces and heating equipment. It is designed to recover heat from flue gases and transfer it to the incoming combustion air, improving energy efficiency and reducing fuel consumption.

Baffle bricks are a type of refractory brick that are used in various industrial heating equipment, particularly in furnaces and kilns. They are typically installed as baffles or partitions within the equipment to control the flow and direction of heat, combustion gases, and materials being processed. Baffle bricks are designed to withstand high temperatures, thermal cycling, and chemical attacks. They are usually made from high-quality fireclay or high alumina materials, which provide good thermal insulation, high refractoriness, and resistance to abrasion and corrosion.