2.7g/cm3 2.85g/cm3 Magnesia Chrome Brick Magnesium Carbon Refractory Bricks
High Quality Magnesia Chrome Brick High Bulk Density Magnesium Carbon Refractory Bricks
Magnesia chrome brick used for lower groove wall of furnace
1. The lower groove wall and groove bottom are continuously scoured, eroded and infiltrated by high-temperature molten steel and slag during the steelmaking process; due to the infiltration of slag into the refractory material, a metamorphic layer occurs, and when the temperature fluctuates, cracks in parallel working surfaces occur and peel off. Further accelerate the damage of the material.
2. The steel slag has high CaO and F, and contains a certain amount of TiO2 and V2O5. This slag has low viscosity and low melting ratio, which is easier to penetrate and destroy the structure of the refractory material. Oxygen blowing and aluminum are used for thermal compensation and alloying of molten steel. The formation of iron silicate slag and CaF2-CaO-Al2O3 slag caused more damage to the working lining.
3. The working lining is made of dense, high-temperature strength, corrosion-resistant fused magnesia-chrome brick XDMGe-20 or 26, semi-rebonded magnesia-chrome brick LZMGe-12 for the secondary working lining, and lightweight high-alumina brick for the thermal insulation lining. Lining with calcium silicate board.
4. The bottom of the tank is fused with magnesia-chrome brick XDMGe-20 or 26, the working lining is erected, the secondary working lining is laid flat, and the bottom of the groove is leveled.
5. The circulation pipe is assembled with anti-scour, anti-erosion and compact. High-strength electrofusion combined with magnesia-chrome brick XDMGe-20 or 24.
| Item | CRE-65/50 | CRE-65/70 | CRE-51 |
At the same time, it provides supporting aluminum-silicon castables and nano-insulation boards. and other auxiliary materials |
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| Refractoriness (℃) | ≥1750 | ≥1750 | ≥1750 | ||
| Chemical composition(%) | F.C | ≥8 | ≥5 | ≥14 | |
| AL2O3 | ≥53 | ≥62 | ≥51 | ||
| SiC | ≥4 | ≥4 | ≥8 | ||
| SiO2 | ≤27 | ≤23 | ≤18 | ||
| Bulk density(g/cm3) | ≥2.7 | ≥2.85 | ≥2.7 | ||
| Apparent porosity(%) | ≤10 | ≤10 | ≤7.5 | ||
| Cold strength (Mpa) | ≥40 | ≥45 | ≥40 | ||
Company Profile:
- Founded in the 1984, listed on the Hong Kong Stock Exchange on October 15, 1999 (name: China Rare Earth, code: 0769)
- The company is headquartered in Yixing, with branches in Shanghai and Hong Kong
- Professional manufacturer of Rare Earth and refractories
- The top 3 supplier of refractories in China
- covers an area of 360,000 square meters and a building area of 240,000 square meters.More than 2,000 employees, Scientific and technological personnel account for 30% of the total number of employees.
- Obtained more than 11 patent certificates
- Established a technical cooperation relationship with Japan Krosaki Harima Corp.
- Long-term supply to Japan Nippon Steel, Japan NKK, Kimizu, Aoida and Nisingkou steel Co
Our mainly partner
FAQ
1. What are refractory products?
Refractory products refer to functional materials which can resist high temperature or even ultra-high temperature. They are widely used in various high temperature heat treatment equipment, such as steels-melting kiln, glass kiln and cement kiln. The quality of refractory products directly affects the usable life of kilns and the quality of the final industrial output. Refractory products are made from various natural minerals such as silica, dolomite, graphite, zircon, magnesia, high aluminium ore and chrome ore through numerous technical refining processes. They have valuable features such as high-heat insulation, high-heat resistance, high strength, high hardness, good volume stability, oxidation resistance, excellent complexity, wear resistance, corrosion resistance, etc.. Some refractory products even have special features such as high ventilation, heat conduction and extreme hardness.
2. Any differences between shaped and unshaped refractory products?
Shaped refractory products can be pressed into bricks and are, generally used in building heat treatment equipment such as metallurgical kilns. Unshaped refractory products refer to fire-resistant casting materials. They can be moulded into whatever shapes and are suitable for building different high temperature furnaces and using as the lining in different heat treatment furnaces.
Our Services:
• Whole package refractory linings design for the kilns;
• Efficient and economical refractories recommendations;
• Provide the sample properties test report from authority institute (SGS or CNAS);
• Kilns linings installation supervision, inspection, evaluation on site;
• Offer measurement of the changes of the roundness in the rotary kiln shell during operation (Ovality measurement).
• Cooperated research and development, provide the best suitable products for different working conditions of the kilns;
• Has logistics company with great advantage in logistics and shipping
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