Ceramic Roller Kiln Refractory Brick High Purity Corundum / Mullite

Ceramic Roller Kiln Refractory Brick Corundum Refractory Brick Mullite Brick

Corundum mullite brick is produced by sintering of high purity fused corundum, synthetic mullite and chromium oxide. corundum mullite block has high bulk density, high compressive strength, good thermal shocking resistance, and good corrosion resistances to acids and alkali. Corundum mullite fire btick not influenced by H2, CO gases at use. Mullite refractory brick is suitable for various high-temperature furnaces; high purity corundum brick used in zirconia ceramics, fluorescence materials, electronic ceramics, magnetic materials, ceramic powder sintering and petrochemical industry gasifier.

Corundum Mullite Brick Description

Corundum mullite brick is a kind of refractory brick made from high purity or purer raw materials, also corundum mullite block is a high alumina fire brick which made of corundum and mullite main crystalline phase. main material of corundum mullite brick is imported plate corundum, high pure fused corundum, adopt advanced superfine powder adding technology, it is made by the mixing material, drying, molding and burned in high temperature shuttle kiln.

Corundum Mullite Brick Features

.High quality raw material,

.High purity corundum,

.Strong volume stability at high temperatures,

.Molded with high pressure and high temperature,

.Good thermal shock resistant,

.Wear resistance,

.Chemical attack resistance.

Corundum Mullite Brick Manufacturing Process

Corundum mullite brick is made of synthetic mullite brickand mullite particles to aggregate material are available, and alpha Al2O3 powder for powder, can also be fused or sintered corundum particles to aggregate material, synthetic mullite powder for powder. The aggregate and powder are mixed according to a certain proportion and grain size. The waste liquor of paper pulp with sulfite is used as the binding agent, and the materials are added in a certain order.Fully mixed and even, with friction press or hydraulic press brick molding machine.Adobe after drying, burn into in 1650 ~ 1750 ℃.

Rongsheng Refractory Corundum Mullite Brick Specifications

Brand RS-48 RS-49 RS-50 RS-55 RS-57 RS-57 RS-60 RS-67

Bulk density g/cm3 ≤ 0.6 0.8 1 0.6 0.8 1 1 1.2

Cold Crushing strength Mpa ≥ 1.5 2.5 4.2 1.5 3.2 4 4 5

Thermal stability 1100°C (air colling) 10 20 20 10 20 20 20 20

Reheating linear change ≤ 1% (°Cxh) 1300×12 1300×12 1300×12 1400×12 1400×12 1400×12 1500×12 1500×12

Thermal conductivity 350±25° (W/m.k) ≤ 0.2 0.23 0.33 0.2 0.25 0.33 0.35 0.4

Al2O3 % ≥ 48 49 50 55 57 57 60 67

Fe2O3 % ≥ 0.9 0.9 0.9 0.8 0.8 0.8 0.7 0.6

Corundum Mullite Brick Price

Generally, cordundum mullite brick is divided into sintering and fused bricks, the price of two kinds of corundum mullite refractory bricks are very different in the market, the price is in the range of thousands to 10,000. We suggest different corundum mullite fire brick should be selected according to different parts of kiln, not only improve the life of furnace, but also reduce the cost.