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Rebonded magnesia chrome bricks for flash furnace

MgO(%)≥50～66; Cr₂O₃(%):15～37
Cold Crushing Strength(MPa)≥40～45
Refractoriness Under Load 0.2MPa:1700

Application:

Rebonded magnesia chrome bricks as flash smelting furnace refractories are mainly used for various parts of settler where are the most serious slag corrosion.

　　As the basic raw materials of fused rebonded magnesia chrome bricks, synthetic magnesia chromite clinker falls into two types: electricity melting methods and sintering methods.

　　Fused magnesia chrome sand use high purity raw materials such as special grade magnesite, high purity light magnesia or dead burned magnesia, and carefully chosen chrome ore, etc.

　　Magnesia chromite clinker that synthesized by sintering methods use high purity light magnesia and chromium concentrate as raw materials, produced by mixing, compacting, firing in high temperature oil shaft kiln.

　　Fused rebonded magnesia chrome bricks should be fired at 1800～1850℃ ultra-high temperature.

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Index	ZMC-35	ZMC-28	ZMC-20	ZMC-18	ZMC-15
MgO(%)≥	50	55	55	66	60
Cr₂O₃(%)	35-37	28-30	20-22	18-20	15-18
Apparent porosity(%) ≤	16	16	16	16	16
Bulk Density(kg/cm³) ≥	3350	3250	3200	3100	3050
Cold Crushing Strength MPa ≥	45	45	45	40	40
Refractoriness Under Load 0.2MPa	1700	1700	1700	1700	1700
Thermal shock Resistance (950℃ air cooling,times)≥	4	4	4	4	4

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Rebonded magnesia chrome bricks for flash furnace

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