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High Quality Tabular Alumina

China High Quality Tabular Alumina, Find details about China Tabular Alumina, Corundum from High Quality Tabular Alumina

Model NO.
common tabular alumina
Quality
First Class
Trademark
Chinalco; Chalco; Pizarro
Transport Package
Woven Bag
Specification
Al2O3 99% max; Fe2O3 0.02% max;Na2O 0.4% max;SiO2
Origin
Shandong, China
HS Code
2818200000
Model NO.
common tabular alumina
Quality
First Class
Trademark
Chinalco; Chalco; Pizarro
Transport Package
Woven Bag
Specification
Al2O3 99% max; Fe2O3 0.02% max;Na2O 0.4% max;SiO2
Origin
Shandong, China
HS Code
2818200000
High Quality Tabular Alumina
Common tabular alumina
Chemical indexTypical valueGuaranteed value
Al2O399.45%≥99.2%
Fe2O30.02%≤0.1%
Na2O0.34%≤0.4%
SiO20.05%≤0.18%
Physical indexTypical valueGuaranteed value
Bulk density3.55g/m3≥3.55g/m3
Porosity2.35%≤5%
Water absorption0.72%≤1.5%

Tabular alumina is a pure sintered corundum with complete shrinkage without adding any additives such as MgO and B2O3. It has the characteristics of coarse crystal and good development α- Al2O3 crystal structure, the content of Al2O3 is more than 99%. The plate-like crystal structure has small pores and many closed pores, and the porosity is roughly the same as that of fused corundum. It has high purity, good volume stability and minimal reheating shrinkage. The refractory or castable used for production has good thermal shock stability and bending strength after high temperature treatment, but the price is higher than that of other alumina.

Performance

High fire resistance; High corrosion resistance; High erosion resistance; High thermal shock stability; High strength and good toughness; Stable chemical properties

Application

Tabular alumina can be used as the main component in aluminum carbon, aluminum magnesium carbon, magnesium aluminum carbon, magnesium spinel and aluminum chromium refractory bricks, and can also be introduced into high aluminum amorphous refractory as enriched alumina. It can be widely used in iron and steel, casting, ceramics and other industries. Its application in iron and steel industry almost covers the whole process of iron making and steelmaking.

Application status of Tabular alumina refractory in iron and steel industry
 
Application status of Tabular corundum refractory in iron and steel industry
EquipmentApplication siteType of material usedPerformance
Blast furnaceFurnace lining, hot blast stove, pouring yard (main ditch, tapping ditch)Aluminum chromium brick, high aluminum brick, high aluminum castable, high aluminum plastic, aluminum silicon carbide carbon castableGood thermal shock resistance, alkali slag corrosion resistance and high temperature strength
TPCWorking lining (slag line brick, iron line brick, top turn), aluminum carbon fireclayAluminum silicon carbide carbon brick, aluminum magnesium carbon brick, aluminum carbon brick, aluminum silicon carbide carbon refractory mudGood slag corrosion resistance and hot metal corrosion resistance
LadleWorking lining, breathable brick, nozzle seat brickAluminum silicon carbide carbon brick, aluminum magnesium preform, aluminum spinel preform, magnesium aluminum unburned brick, aluminum magnesium unburned brick, aluminum spinel fired productsGood thermal shock resistance, slag resistance, molten steel corrosion resistance and good air permeability
TundishBackup working lining and coverLow cement castable, high alumina precast brickVolume stability
RHImpregnation pipe, circulating pipeCorundum spinel castable and preformGood thermal shock resistance and slag resistance
NozzleLong nozzle, submerged nozzleAluminum carbon nozzle, aluminum carbon sliding plate, etcGood thermal shock resistance and molten steel corrosion resistance
Sliding nozzleNozzle and sliding plateAluminum carbon nozzle, corundum spinel pouring nozzle, aluminum carbon sliding plate, etcGood thermal shock resistance, corrosion resistance
Heating furnaceWorking liningHigh alumina plastic, castable, precast blockStable volume and good thermal insulation effect

High Quality Tabular Alumina
High Quality Tabular AluminaHigh Quality Tabular AluminaHigh Quality Tabular AluminaHigh Quality Tabular Alumina
High Quality Tabular AluminaHigh Quality Tabular AluminaHigh Quality Tabular AluminaHigh Quality Tabular AluminaHigh Quality Tabular AluminaCharacteristics of tabular alumina

  Tabular alumina is favored by many refractory enterprises for its excellent characteristics such as stable chemical performance, good thermal shock stability, erosion resistance and good particle toughness. It is the preferred material for the production of high-performance refractory products or high-grade amorphous refractory materials, especially the three major pieces of continuous casting in the metallurgical industry and the catalytic cracking furnace in the chemical industry. Advanced refractories such as ultra-high temperature kilns and tabular alumina in building materials and ceramics industry are indispensable and important raw materials.


2. Erosion resistance

Mohs hardness is 9, which is equivalent to diamond, with high toughness, not easy to fracture, erosion resistance and corrosion resistance.

Application and technical parameters of tabular alumina

As a refractory, tabular alumina has the largest consumption and the best performance in the refractory industry.

1. Unshaped refractory

Mainly castables, such as iron hook castables and ladle castables. At present, 80% of the formula of large ladle castable is plate corundum, including aggregate and powder.

2. Shaped refractory

Permeable brick, sliding plate, nozzle, stopper and nozzle seat brick. 80% of the formula is plate-shaped corundum, including aggregate and powder.

3. Chemical industry

3 to 6 mesh particles are mainly used, which are called inert particles in chemical plants. They are evenly mixed with catalyst particles and used as catalyst bed for chemical gas to pass through and react with catalyst. The main purpose is to support and heat conduction of catalyst.
High Quality Tabular Alumina


 

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