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Semi silica brick
　

Brands Items	Indexes
Brands Items	E70	E65
SiO₂, %	≥70	≥65
Fe₂O₃, %	≤2.0	≤2.0
Na₂O+K2O, %	≤1.0	≤1.0
AP, %	≤22	≤24
CCS, MPa	≥27	≥38
RUL (0.2MPa), ℃	≥1340	≥1360
Refractoriness, ℃	≥1610	≥1610
BD, g/cm³	≥2.10	≥2.10
Thermal Shock Resistance (1100℃ water cooling), Cycles	≥7	≥7

Refractory bricks used in iron-mixier and iron ladle

Brands Items	Alumina-Sic-C brick			phosphate bonded chrome-containing high-alumina brick
	for torpedo	for slag zone of ladle	for wall of ladle	for bottom of ladle	for slag zone of ladle	for slag zone of ladle	for air blown area
	XHT-SG1	UKC-4	UKC-6	UKC-7	UKC-25	UKC-L0	UKA-5
Al₂O₃, %	≥65	≥67	≥45	≥46	≥74	≥70	≥70
SiO₂, %	-	-	-	-	≤5	≤5	-
C, %	≥8	≥9	≥9	≥9	≥10	≥10	-
SiC, %	≥11	≥4	≥4	≥4	≥3	≥3	-
HMOR(1400℃), MPa	-	5	2	2	10	10	-
Refractoriness, ℃,	-	-	-	-	-	-	≥1850
BD, g/cm³	≥2.78	≥2.87	≥2.55	≥2.55	≥3.10	≥3.13	≥2.75
AP, %	≤10	≤10	≤11	≤10	≤8	≤8	≤20
CCS, MPa	≥45	≥40	≥40	≥40	≥38	≥38	≥35