yixing xinwei leeshing refractory materials co.,Ltd
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Refractory Manufacture Alumina Silica Refractory Brick For Electric Arc Furnace Carbon Furnace Cement Plant
Alumina silica fire brick for sale is based on AL2O3—SiO2 basic theory, including several below:
Silica brick, means refractory brick with over 93% SiO2 content, is a kind of acid refractory brick. It is mainly used to build coke oven, glass kiln, ceramic kiln, carbon calcinations furnace and is not suitable to be used in heating equipment with temperature fluctuation under 600 ℃.
Fireclay brick is mainly made of mullite, glass phase, cristobalite and quartz. Refractory clay brick uses hard clay as the raw material after calcinations in advance and mix with soft clay after plastic making. Fireclay brick is always used in blast furnace, hot blast heater, heating furnace, power boiler, lime kiln, rotary kiln, ceramic kiln and calcining kiln.
High alumina brick is made of corundum, mullite and glass phase, which is subjected by AL2O3/ SiO2 proportions. High alumina brick uses bauxite and sillimanite natural ore as the raw materials. And also mix with fused corundum, sintered alumina, synthetic mullite, aluminium oxide and clay according to different calcined clinker. High alumina brick is mainly used in steel manufacture, non-ferrous metals industry and other industries.
Corundum brick has over 90% AL2O3 content and with corundum as the main phase. Corundum brick can be classified into sintered corundum brick and fused cast corundum brick.
Physical and Chemical Indicators Of Semi-rebonded Magnesia Refractory Brick :
| Item | Cr 18 | Cr 20 | Cr 24 | At the same time, we also provide unshaped refractory products such as magnesia-chromium ramming material and magnesia-chromium fire clay. | |
| refractoriness | ≥1700 | ≥1700 | ≥1700 | ||
| Chemical composition | MgO | ≥60 | ≥58 | ≥55 | |
| Cr2O3 | ≥18 | ≥20 | ≥24 | ||
| SiO2 | ≤1.5 | ≤1.5 | ≤1.5 | ||
| Bulk density(g/cm3) | ≥3.10 | ≥3.15 | ≥3.25 | ||
| ≤18 | ≤18 | ≤17 | |||
| Apparent porosity(%) | |||||
| (Mpa) | ≥50 | ≥50 | ≥60 | ||
| Cold strength | |||||
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.
4. Product specification: standard form, normal standard, shaped and special shaped bricks.
5. Can be used in various kilns because of its cheapness and general tray package. Among all of the refractory materials, it is the most widely used.