Burnt Magnesite Bricks Direct Bonded Magnesia-chrome Brick for Cement Kiln
Introduction:
Magnesite chrome brick is made of high quality magnesite clinker and chromium concentrate as the raw material by firing.
Feature:
Magnesite chrome brick has high temperature, good erosion resistance, good anti-stripping ability, etc.
Application:
Magnesite chrome brick is used in steelmaking flat hearth furnace, furnace bottom and wall, the permanent lining of oxygen converter, non-ferrous metal smelting furnace, high temperature tunnel kiln, calcined magnesia brick and cement rotary kiln lining, furnace bottom and furnace wall.
Technical Index:
| Item |
DMC-12 |
DMC-9B |
DMC-9A |
DMC-6 |
DMC-4 |
| Standard Value |
Standard Value |
Standard Value |
Standard Value |
Standard Value |
| MgO, % |
≥60 |
≥70 |
≥70 |
≥75 |
≥80 |
| Cr2O3, % |
≥12 |
≥9 |
≥9 |
≥6 |
≥4 |
| SiO2,% |
≤3.2 |
≤3.0 |
≤2.8 |
≤2.8 |
≤2.5 |
| Apparent Porosity,% |
≤19 |
≤19 |
≤19 |
≤18 |
≤18 |
| Bulk Density, G/Cm3 |
≥3.0 |
≥2.98 |
≥2.98 |
≥2.95 |
≥2.93 |
| Cold Crushing Strength,Mpa |
≥35 |
≥40 |
≥40 |
≥40 |
≥40 |
| 0.2.Mparefractoriness Under Load(℃) |
≥1580 |
≥1580 |
≥1600 |
≥1600 |
≥1600 |
| Thermal Shock Resistance, Times(1100℃～Water Cooling) |
≥4 |
≥4 |
≥4 |
≥4 |
≥4 |
Quality Assurance
1. Inspection and Control of incoming raw materials: according to the chemical content,raw materials are classified into different levels to ensure quality of brick first.
2. Inspection and control of the process: during the production,every brick will be weighed twice strictly to reduce the error of weight .
3. Quality audit by quality management: inspection of product standardization of quality of each product by process control and experimentation, taking corrective measures timely whenever deviations are noted.
4. Before delivery, the inspectors will inspect the size,appearance, physical and chemical properties of brick again in factory.
