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{"title":"High Alumina Refractory Brick 55%\u201385% Al\u2082O\u2083 With High Refractorines","imgUrl":"https:\/\/img.chinax.com\/nimg\/73\/ee\/6df56c10411d917ffbeb5b8d3e52-200x200-1\/high_alumina_refractory_brick_55_25_e2_80_9385_25_al_e2_82_82o_e2_82_83_with_high_refractorines.jpg","attrs":{"Brand Name":"LEADSUN","Model Number":"HA55 HA60 HA70 HA75 HA80","Certification":"CE ISO","Place of Origin":"China"}}
{"title":"High Strength High Alumina Refractory Brick HA60 HA70 HA75 HA80","imgUrl":"https:\/\/img.chinax.com\/nimg\/f9\/bc\/5762792b9415cca1c2f28953541e-200x200-1\/high_strength_high_alumina_refractory_brick_ha60_ha70_ha75_ha80.jpg","attrs":{"Brand Name":"SUNWOOL","Model Number":"High Alumina Brick","Certification":"ISO CE","Place of Origin":"China"}}
{"title":"High Alumina Brick with 55%-85% Al2O3 Content and 1750-1850\u00b0C Refractoriness for","imgUrl":"https:\/\/img.chinax.com\/nimg\/eb\/96\/ee1c2fd5f624b5710cf84f26d6ec-200x200-1\/high_alumina_brick_with_55_25_85_25_al2o3_content_and_1750_1850_c2_b0c_refractoriness_for_cement_kiln_customizable_cutting.jpg","attrs":{"Brand Name":"Leadsun","Model Number":"HA60 HA70 HA75 HA80 or SK36 SK37 SK38 SK40","Place of Origin":"CHINA","Minimum Order Quantity":"500pcs"}}
{"title":"1300C - 1800C High Alumina Brick Kiln Refractory Clay Bricks","imgUrl":"https:\/\/img.chinax.com\/nimg\/75\/da\/c3226c4b60cca868ac9e9bde445a-200x200-1\/1300c_1800c_high_alumina_brick_kiln_refractory_clay_bricks.jpg","attrs":{"Certification":"CE ISO","Place of Origin":"China","Minimum Order Quantity":"1pcs","Payment Terms":"L\/C,D\/P,T\/T,Western Union"}}
{"title":"Customizable High Alumina Brick with 55%-85% Al2O3 for Industrial Furnaces and","imgUrl":"https:\/\/img.chinax.com\/nimg\/75\/da\/c3226c4b60cca868ac9e9bde445a-200x200-1\/customizable_high_alumina_brick_with_55_25_85_25_al2o3_for_industrial_furnaces_and_kilns_2c_resistant_to_1850_c2_b0c.jpg","attrs":{"Brand Name":"Leadsun","Model Number":"HA60 HA70 HA75 HA80 or SK36 SK37 SK38 SK40","Place of Origin":"CHINA","Minimum Order Quantity":"500pcs"}}
Al2O3≥65% 1500℃ High Alumina Brick 230x114x65mm for Kiln Furnace Steel Metallurgy
Leadsun high alumina bricks are engineered for industrial furnaces, steel ladle linings, and kiln applications. High Alumina bricks are wildly use to the iron and steel metallurgical industry, building materials and ceramics industry, petrochemical and power industry and other high-temperature equipment. Manufactured with selected bauxite chamotte using advanced processes and strict quality control, these bricks deliver exceptional performance in demanding thermal environments.
Technical Specifications
Item
HA60
HA70
HA75
HA80
Al₂O₃ (%)
≥60
≥70
≥75
≥80
SiO₂ (%)
32
22
20
≥18
Fe₂O₃ (%)
≤2.5
≤2.0
≤1.8
≤1.5
Refractoriness (°C)
≥1750
≥1780
≥1800
≥1850
Bulk Density (g/cm³)
2.35-2.4
2.45-2.5
2.5-2.55
2.75-2.8
Softening Temperature Under Load (°C)
≥1450
≥1510
≥1520
≥1600
Apparent Porosity (%)
≤24
≤23
≤21
≤18
Cold Crushing Strength (MPa)
≥45
≥50
≥60
≥85
Key Advantages
Low Iron Content: Minimal iron oxide impurities (<2%) prevent unwanted reactions and discoloration at high temperatures.
Our products cover heavy & light shaped and unshaped refractories, and are widely used in power, steel & iron, non-ferrous, petrochemicals, building materials and other industries, and are exported to more than 30 countries and regions in Europe, America, Africa, Oceania, Southeast Asia... Our products cover heavy & light shaped and unshaped refractories, and are widely used in power, steel & iron, non-ferrous, petrochemicals, building materials and other industries, and are exported to more than 30 countries and regions in Europe, America, Africa, Oceania, Southeast Asia...