It directly combines the characteristics of magnesia-chrome bricks: excellent high temperature performance and corrosion resistance. Mainly used in new dry process cement kiln firing zone, glass kiln regenerator lattice and other industrial kiln refractories; high strength, corrosion resistance, good slag resistance and thermal stability. Mainly used in non-ferrous converter, glass kiln and cement kiln firing zone.

Items	Direct-bonded magnesia-chrome Brick
	HTBDCr-4	HTBDCr-6	HTBDCr-8A	HTBDCr-8B	HTBDCr-9A	HTBDCr-9B	HTBDCr-12	HTBDCr-26
MgO% ≥	80	75	80	75	70	70	60	55
SiO2% ≥	2.5	2.8	1.5	2	2.8	3.0	1.8	2.0
Cr2O3% ≤	4	6	8	8	9	9	12	26
Apparent porosity % ≤	18	18	17	18	19	19	18	20
Cold Crushing strength Mpa ≥	40	40	40	45	40	40	40	40
Refractoriness under load 0.2Mpa ≥	1600	1600	1700	1650	1600	1580	1650	1700
Thermal shock resistance(1100℃air cool times)	≥ 5	≥ 5	≥ 5	≥ 5	≥ 5	≥ 5	≥ 5	/