Details ： Alumina ceramic is used AL2O3 as raw material, after 1600 ℃ high temperature sintered made of special corundum ceramic. The main products are ceramic tile, ceramic pipe, ceramic ball and ceramic shaped products, alumina ceramic with high mechanical strength, high hardness, wear resistance, corrosion resistance, high temperature resistance and other excellent features, almost applied to every field in modern industry.

Physical and Chemical Properties of Alumina Ceramic

Category	Unit	Technical Indicator
alumina content	wt%	92	≥95	≥99
density	g/cm2	3.6	3.7	3.8
hardness	HRA≥	85	88	90
compressive strength	MPa≥	1900	2500	2800
bending strength	MPa≥	270	300	350
expansion coefficient	×10-6/℃	8	7.5	7.5
elasticity modulus	GPa	300	300	300
heat conductivity coefficient	W/m20℃	27	20	20
water absorption	%	≤0.02	≤0.02	≤0.02
abrasive  resistance	g/ cm2	0.2	0.1	0.1
acid  resistance	mg/ cm2	0.7	0.7	0.7
alkali  resistance	mg/ cm2	0.2	0.1	0.1

Alumina ceramic lined steel pipe is wear resistant composite materials which lining alumina pipe and alumina tile on the inner surface of the steel. It is the recombination of ceramic and steel and possesses all the good performance of two materials. Alumina ceramic lined steel pipe has excellent performance in wear resistance, corrosion resistance, high temperature resistance and impact resistance. Because of the smooth surface of the conveying material, the material can be transit fluently. Alumina ceramic lined steel pipe also has advantages of light-weight and easy to install feature.

Widely used in the following pipeline transportation: coal powder and ash of the power plant, mine concentrates and tailings, coal powder of coal mine, the scorched particle of coking plant, port pulp and sediment transport, wear-resistant materials of sintering plant, chemical and liquid aluminum and other corrosive media.

Alumina ceramic lined steel pipe is using high temperature plastic pasted the alumina ceramic tile to the inner wall of steel pipe. The advantage is good wear resistance, widely using range, without being limited by the substrate size and low cost.