MGO Magnesia Chrome Fire Refractory Brick for Cement Kiln

Natural fused ore or its selected products and sintered magnesia made of natural or synthetic raw materials are the basic raw materials for the manufacture of magnesia chrome bricks. Ordinary magnesia chrome bricks or silicates combined with magnesia chrome bricks (containing 4% to 7% SiO2) combined with a lower melting point of the cinnamate phase (calcium-magnesium olivine CMS and magnesium-scruzzo C3MS2) combined with high refractory Magnesia and chrome, iron and aluminum composite magnesium spinel are formed, so it has high high temperature plasticity and microstructure toughness. It shows stress relaxation above 800 °C and good thermal shock stability. It is most suitable for 1000t. Used in small kiln below /d. However, its load softening temperature is low, and it is easy to be damaged by overheating, so it is rarely used in large precalcining kiln (≥4000t/d).

Magnesia-chrome bricks with low silicate content (including 2.5%~4% SiO2) still have certain microstructure toughness and high temperature stability, which is suitable for use in rotary kiln of 1500~4000t/d. It can also be used on both sides of the firing zone in the larger format rotary kiln. This brick can be referred to as a semi-direct combined magnesium chrome brick.

Please contact customer service for the specific parameters.

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

Testing

Strict delivery inspection, so that every product is in line with the standard.

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.