Magnesia-iron Spinel Bricks

Magnesia-iron spinel brick chemical formula is MgFe204, in which magnesium ions (Mg2+) and iron ions (Fe3+) form a lattice structure in a certain ratio. This compound has a high melting point, high hardness and high resistance to corrosion, making it an ideal brick material. Magnesia spinel bricks have a series of excellent physical properties. First of all, it has high compressive strength and flexural strength, and can withstand large external forces without breaking easily.

There are many methods for preparing mafic magnesia-iron spinel brick, the most common ones are sintering and melting. The sintering method is to process the mafic spinel ore through crushing, grinding, mixing and other processes, and then put it into a sintering furnace for high-temperature sintering to form dense and hard bricks. The melting rule is to put the mafic spinel ore and an appropriate amount of flux into an electric furnace to melt it, then pour it into a mold to cool and solidify, and finally get the required bricks. Magnesia spinel bricks are widely used in construction, metallurgy, chemical industry and other fields.

Properties of Magnesium Iron Spinel Bricks

1. Good thermal stability

Magnesia spinel bricks have good high temperature resistance and can be used stably for a long time below 1500°C.

2. Low thermal expansion coefficient

The thermal expansion coefficient of mafic spinel bricks is generally around 2×10^-6/℃, and it is not prone to thermal shock cracking.

3. Good slag resistance

Magnesium iron spinel bricks have a high degree of surface crystallization and a tight structure, which can effectively prevent corrosion and chemical corrosion of metal oxides.

4. High compressive strength

The compressive strength of mafic spinel bricks can reach more than 150MPa and has good mechanical properties.

In the construction field, it can be used for the lining of high-temperature furnaces and the preparation of refractory masonry materials. In the metallurgical field, magnesia-iron spinel brick can be used for the lining of high-temperature smelting furnaces and the preparation of refractory masonry materials. In the chemical industry, it can be used for the lining of high-temperature reactors and the preparation of acid and alkali corrosion-resistant materials. In addition, mafic spinel bricks can also be used in production equipment in glass kilns, cement kilns and other industries. Magnesia spinel brick is a kind of brick with excellent physical properties and chemical stability. It is prepared by sintering or melting methods and is widely used in construction, metallurgy, chemical industry and other fields. High-quality mafic spinel bricks have the characteristics of high strength, fire resistance, wear resistance, corrosion resistance, etc., and can be used stably for a long time under harsh working conditions.