70% high alumina bricks

Specifications 1.High intensity for pressure

2.Good thermal shock stability

3.Strong abrasion and corrosion resistance

  High aluminum brick is a neutral refractory which Al2O3 content is higher than 48%, using select bauxite as main raw material, supplemented by quality flint clay, it has the property of high compressive strength , high refractoriness under load and good heat shock stability. Mainly used in the masonry and building blast furnace, the hot-blast stove, the electric stove furnace top, the rotary kiln inside lining.  

Brand	SK-32	SK-34	SK-36	HA-60	HA-70	HA-75
Al2O3(%)	≥30	>42	>50	>60	>70	>80
Fe2o3(%)	≤3	<2	<2	<2	<2	<2
Refractoriness	1710	1750	1750	1770	1790	1790
refractoriness under load 0.2mpa(C)	1300	1450	1450	1450	1510	1530
Porosity(%)	22	19-23	19-23	19-23	19-23	19-23
Bulk density(g/cm3)	≥2.1	>2.2	>2.3	>2.35	>2.4	>2.4
Cold cushing strength (mpa)	≥25	>30	>40	>45	>50	>60
Thermal expansion at 1000C(%)	≤0.6	<0.6	<0.6	<0.6	<0.6	<0.6

  Features: 1.       Low bulk density, low thermal conductivity, good thermal insulation performance 2.       Refractory category allow direct contact of fire, suitable for various atmosphere 3.       Good integrity with furnace lining, long service life, easy operation, could be shaped freely   Typical application: 1.       Furnaces of metallurgy industry, heat treatment furnace 2.       Furnaces of chemical industry and construction industry 3.       Furnace of incineration of garbage, recirculating fluidized bed furnace