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Direct bonding magnesia chrome brick

Direct combination of magnesia chrome brick is made of high purity sintered or fused magnesia and chrome concentrate as the main raw material, by high pressure molding, high temperature sintering. The impurity content of the product is small, the glass phase is concentrated in the triangular area of the crystal phase, and the crystal phase is directly combined with the crystal phase. It has the characteristics of high strength, anti-peeling, and anti-erosion. It is mainly used for the upper groove and middle groove of the RH furnace. Working lining of hot bending pipes.

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Refractory materials for the iron and steel industry

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Brand Index	HTZMGe-8A	HTZMGe-12A	HTZMGe-16A	HTZMGe-18A	HTZMGe-20A
MgO(%) ≥	75	70	65	62	60
Cr₂O₃ (%)≥	8	12	16	18	20
SiO₂ (%)≤	1.5	1.5	1.5	1.8	1.8
Fe₂O₃ (%)≤	7	8	9	10	12
The apparent porosity A · P(%) ≤	18	18	18	18	18
Bulk density B · D(g/cm³)≥	3.00	3.05	3.10	3.15	3.20
Compressive strength C · C · S(MPa) ≥	45	45	40	40	40
Thermal shock resistance T · S · R(1100 ℃ water cooling times) ≥	4	4	4	4	4
Softening temperature of 0.2MPa load R · U · L(To ℃)>	1700	1700	1700	1700	1700