Alumina Lining Brick

Description

Alumina Lining Brick Introduce

Alumina lining bricks, also known as high-alumina lining bricks or high-alumina ball mill linings, are special wear-resistant ceramic products manufactured from alumina powder through a process comprising granulation, dry pressing, and high-temperature sintering. With a Rockwell hardness of HRA 80–90, second only to diamond, their wear resistance far exceeds that of wear-resistant alloys and manganese steel. These bricks can be directly bonded to the inner walls of wear-prone equipment, extending service life through the superior abrasion resistance of alumina ceramics. Featuring a uniform and homogeneous internal and external structure, the products offer high hardness, high strength, and good toughness, with a service life of up to 3 years or more. They are an ideal lining solution for ball mills and dryers.

Rongsheng Refractory Alumina Lining Brick Technical Data

Item	ALB-92	ALB-95
Al2O3 %	92±0.5	95±0.5
Bulk Density (g/cm³)	≥ 3.6	≥ 3.7
Rockwell Hardness (HRA)	≥ 82	≥ 85
Flexural Strength (MPa)	≥ 220	≥ 250
Compressive Strength (MPa)	≥ 1050	≥ 1300
Fracture Toughness (MPa·m¹/²)	≥ 3.7	≥ 3.8
Wear Volume (cm³)	≤ 0.5	≤ 0.2
Abrasion Loss (Sand Blasting Test)	1.6 g	1.2 g

Dimensions of Alumina Lining Brick

Item	L mm	W1 mm	W2 mm	H mm
Straight Brick	150	50	50	35-100
Tapered Brick	150	45	50	35-100
Half Straight Brick	75	50	50	35-100
Half Tapered Brick	75	45	50	35-100
Thin Brick	150	25	25	35-100
Tapered Thin Brick	150	22.5	25	35-100

Custom sizes and shapes are available.
1. The lining brick thickness should be appropriately adjusted based on the hardness of the material to be ground and the expected service life. For example, in gypsum modification applications where the material is relatively soft, the brick thickness can be reduced to save costs. Conversely, for artificial glass pulverizing, the brick thickness can be increased to extend service life.

Alumina Lining Brick Selection

Ball Mill Diameter m	Recommended Brick Thickness m
≤ 1.2	30~40
1.2~1.8	40~60
≥ 1.8	≥ 70

Application of Alumina Lining Brick

Alumina lining bricks (wear-resistant ceramic lining bricks) are specifically designed for grinding applications such as glazes and ceramic tile blanks. They feature high hardness, high bulk density, low wear rate, excellent corrosion resistance, and precise dimensional uniformity. Widely used as linings for ball mills in industries including ceramics, cement, paints, pigments, chemicals, pharmaceuticals, coatings, and inorganic mineral powder processing, these bricks effectively improve grinding efficiency and reduce overall grinding costs.