HuaMing Alumina Technology Ltd., China
http://www.alumina-ball.com/
Industry standards for Alumina Lining Brick
JC/T 848.2 – 1999, China
1. Application Scope
The standards stipulate the product classification, technical requirement, testing method, inspecting regulations and sign, packing, transport and storage for alumina linings brick.
The standards is applied to ceramic industry used alumina linings brick.
2. Quoted Standards
(a) GB/T 2997 – 82
(b) GB/T6900.3-1996
(c) GB/T6900.4-1996
(d) GB/T8488-87
(e) GB/T13479-92
3. Alumina linings brick specification and classification
According to the brick shape:
Rectangle brick, trapezoid brick and custom shaped brick.
Standard specifications
mm
Brick types Code Sizes
Length (a) Width (b1) Width (b2) Thickness (S)
Rectangle brick MC-1 150 50 50
MC-2 150 50 60
MC-3 150 50 70
Trapezoid brick MC-4 150 50 45 50
MC-5 150 50 44 60
MC-6 150 50 43 70
MC-7 150 50 40 50
MC-8 150 50 38 60
4. Technical Parameters
Appearance quality
See the table
Item Quality Index
First Class Qualified
Fleck Dia. 2-3mm, 2/brick or less Dia. 2-4mm, 4/brick or less
Broken corner Depth 4-6mm, 1/brick or less Depth 4-6mm, 2/brick or less
Waney Depth 3-4mm, length 8-10mm, 1/brick or less Depth 4-6mm, length 8-15mm, 2/brick or less
Crack Front face and side face, not allowed, back face, width0.25mm less, length 5-15mm, 2/brick or less Front face and side face, width0.25mm less, length 5-15mm, 2/brick or less, back face, width0.5mm less, length 5-15mm, 2/brick or less
Warp Side face ±1mm Side face ±1.5mm
Color of the brick: White.
Size and tolerance
Item First Class Qualified
Size tolerance Size≥150 ±2.0 ±2.5
150>Size≥70 ±1.5 ±2.0
70>Size≥30 ±1.0 ±1.5
Size<30 ±0.5 ±1.0
Physical and chemical properties
Item Index
Fe2O3 ≤0.5%
Al2O3 ≥80%
Water absorption 0.1%
EWT 70 mm2
5. Test method
6. Inspection
7. Sign, packing and transport
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URL : http://www.alumina-ball.com/
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