Production Process of Magnesia Chrome Brick

Production process of firing magnesia chrome brick is similar with magnesia brick. To eliminate the loose effect of brick in the firing process that result from expansion when generate spinel caused by the ferrous oxide reaction of MgO and Cr2O3, Al2O3 or Direct Bonded Magnesia Chrome Brick. Magnesia chrome brick also can be made of composite common sintered material.
 

Besides, there is also unfired magnesite-chrome brick, such as unfired magnesite-chrome brick made of inorganic magnesium saline solution combination. It has properties of simple manufacturing process, low cost and good thermal shock resistance. But its high temperature strength is not nearly so as burnt brick.
 

Direct bonding of high temperature phase of periclase and spinel and distribute isolated island-liked distribution of low melting phase of silicate make that Direct Bonded Magnesia Chrome Brick has features of pure raw material, high firing temperature, high temperature strength and slag erosion resistance.

Use fines that made of chromium minerals and magnesia together to grind pressed shape, which is effective action to eliminate loose effect.

Magnesia chrome brick made of this method compares with common magnesia chrome brick, its apparent porosity is low, compression strength, refractoriness under load and bending strength is higher.
 

Magnesia Chrome Bricks made of synthetic magnesia chromite clinker through firing in the high temperature and pressed shape with chromium minerals and magnesite have better slag erosion resistance and high temperature strength.
 

Besides, there are also fused cast magnesite chrome brick that is made of magnesia-chrome materials fused by Arc Furnaces through direct pouring and rebonded magnesia-chrome brick that is made of fused magnesia chrome materials according to the bricks’ production process.