Refractory Bricks and Refracotry Material: Data Sheet of Firing High-Purity Magnesia Brick

2016年12月24日星期六

Product		High purity magnesia brick				Directly bonded magnesia-chrome brick	Unfired brick magnesium zirconium brick
Chemical composition%	MgO %	≥97.5	≥96.5	≥96	≥95	≥60	76-85
	SiO₂%	＜0.5	≤1.5	≤1.5	≤2.0	＜0	ZrO₂ 6.5-13
	Fe₂O₃%	＜1.0	≤0.8	≤0.8
	Cr₂O₃%					≥12
Physical performance	Apparent porosity %	＜16	≤16	≤15	＜17	＜18	6～8
	Cold crushing strength Mpa	≥65	≥60	≥60	≥59	≥34
	0.2MpaLoad softening temperature T0.6 % ℃	≥1700	≥1700	≥1700	≥1650	≥1700	≥1600
	Bulk density g/cm³	≥3.1	≥3.05	≥3.05	2.95	2.95	≥3.15
	High temperature flexural strength Mpa 1400℃×3h	＞5.8		＞5.8		≥8

Refractory Bricks and Refracotry Material