Lightweight Mullite Bricks

PRODUCTS

Lightweight Mullite Bricks 1.0

Lightweight mullite bricks are made of high-quality high-purity refractory materials, according to the required specific gravity of the product, organic composite fillers are added, vacuum extruded and sintered at high temperature to form lightweight mullite products. With its light weight and excellent thermal insulation performance, lightweight mullite bricks are widely used in hot surface refractory linings or insulation layers of various thermal equipment, creating conditions for improving the energy utilization rate of equipment.

SEND EMAIL TO US +86 (0) 371-88551993

Description of Lightweight Mullite Brick

High-alumina refractory materials with mullite as the main crystal phase generally have an alumina content of 50%-75%. The refractory temperature of mullite lightweight bricks can reach above 1790℃. The load softening starting temperature is 1600-1700℃. The room temperature pressure resistance is light 70-260MPa. Good thermal shock resistance. There are two types: sintered mullite bricks and fused mullite bricks.

Sintered mullite bricks are made of high-alumina bauxite clinker as the main raw material, with a small amount of clay or raw bauxite as a binder, and are formed and sintered. Fused mullite bricks are made of high-alumina bauxite, industrial alumina and refractory clay, with charcoal or coke fine particles added as a reducing agent. After forming, they are manufactured by reduction fusion method. The crystals of fused mullite are larger than those of sintered mullite, and the thermal shock resistance is better than that of sintered products. Their high-temperature performance mainly depends on the content of alumina and the uniformity of the distribution of mullite phase and glass.

A high-alumina refractory material with mullite (3Al2O3·2SiO2) as the main crystal phase. The general alumina content is between 65% and 75%. In addition to mullite, the mineral composition also contains a small amount of glass phase and quartz with a lower alumina content; and a small amount of corundum with a higher alumina content. Lightweight mullite bricks can be directly used for high-temperature kiln linings, and are currently widely used in shuttle kilns, roller kilns, glass and petrochemical kiln linings.

The physical and chemical parameters of lightweight mullite bricks are as follows:

Lightweight mullite brick features:

Ferrosilicon furnace is an industrial electric furnace that consumes a lot of power and is a type of submerged arc furnace. Ferrosilicon furnace includes furnace shell, furnace cover, furnace lining, short net, water cooling system, smoke exhaust system, dust removal system, electrode shell, electrode pressure release and lifting system, loading and unloading system, controller, burn-through device, hydraulic system, transformer And various electrical equipment, etc., the use of refractory materials is also quite demanding.

In 2006, Our factory was founded in Yuzhou, the raw material base.High bauxite ore is a finely divided colloidal mixture composed of aluminum hydroxides and various ratios. High-alumina bauxite in the refractory industry usually refers to bauxite ore with a calcined Al₂O₃ content greater than 48% and a low Fe₂O₃ content.

Applied to:

Glass melting furnace upper structure material channel bricks, modification plates, processing kiln upper structure, E-glass melting furnace bricks. Firing kilns, smelting kilns, refining devices, heating devices, and other thermal equipment. Application areas: ceramic industry, glass industry, steel industry, petrochemical industry, aluminum industry, and other industrial fields.