Basic Info.
Refractoriness (℃)
1770< Refractoriness< 2000
Feature
Long Time Materials
Transport Package
Wood Pallet
Specification
SGS, ISO9000
Product Description
High alumina brick - Technical data
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 Applications
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
Standard sizing: 230 x 114 x 65 mm
High Alumina Brick HA-70 (SK-38)
Item | Standard |
Al2O3 (%) | ≥70 |
SIO2 (%) | ≤22 |
Fe2O3 (%) | ≤2.0 |
Na2O+K2O (%) | <2.0 |
Refractoriness | >1770 |
refractoriness under load 0.2mpa(ºC) | >1510 |
Porosity (%) | <22 |
Bulk density(g/cm3) | ≥2.40 |
Cold cushing strength (mpa) | ≥50 |
Thermal expansion at 1000ºC(%) | ≤0.3 |
Reheating shrinkingchange(%) 1500ºCX24h | +/-0.3 |
Tolerance - Technical Instruction for Bricks Sampling
1. DIMENSIONAL CONTROL
1 - 100 mm: +/- 1 mm; 101 - 200 mm: +/-2 mm; 201 - 300 mm: +/- 3 mm;
Equal Dimension Difference: 1 mm Max.;
Taper: +/- 1 mm Max.
Warpage: +/- 1 mm Max. ( from diagonal line )
2. APPEARANCE CONTROL
Main defects are showing on the figure. The criteria to accept or reject are as follow:
l CORNER: a+b+c≤ 30 mm; No more than 2 corners chipped. 90% of the pieces without defects.
l EDGE: e+f≤ 15 mm; g≤ 35 mm; No more than 2 edges chipped. 90% of the pieces without defects.
l CRATER: (D1+D2)/2≤10 mm, Depth D ≤5 mm; No more than 2 craters per piece.
l CRACKS:
- FACE: Crack Width < 0.5 mm; L ≤20 mm; 2 cracks maximum per face. Never face to face crack will be accepted.
- EDGE: Crack Width < 0.5 mm; L1+L2 ≤40 mm; No more than 2 cracks per piece.
l STAIN: NOT Allowed.
Address:
Lingzi Industrial Park, Lingzi Town, Zichuan District, Zibo, Shandong, China
Business Type:
Manufacturer/Factory
Business Range:
Chemicals, Construction & Decoration, Electrical & Electronics, Industrial Equipment & Components, Metallurgy, Mineral & Energy, Textile
Company Introduction:
Zibo Xindi Refractory Material Co., Ltd. is situated in Zibo, Shandong, China. We have 20, 000 square meters floor area and can produce 30, 000 metric tons of more than 10 kinds of medium and top grade refractory and heat insulation materials annually. We have 4 large production lines. Both Research and Development Centers for technology and Testing Center for chemical and physical properties are established.