Hot stove with high-quality silica brick-Hot stove-Refractory silica brick clay bricks | castables | silicon carbide |- Shandong Jiahe Refractories Co., Ltd.

Hot stove with high-quality silica brick

Product details

Project \ grades	SDS21	SDSL	SDK
SiO _2%	≥ 94	≥ 95	≥ 95
Al ₂ O _3%	≤ 1	≤ 0.8	≤ 1
Fe ₂ O _3%	≤ 1.5	≤ 0.5	≤ 1
Of CaO%		≤ 3	≤ 3
Residual quartz%	≤ 1	≤ 1	≤ 1
Apparent porosity	≤ 23	≤ 23 (24)	≤ 21 (23)
The bulk density g / cm ³		≥ 1.78 (1.75)	≥ 1.8 (1.75)
True density g / cm ³	≤ 2.35		≤ 2.34
Cold crushing strength Mpa	≥ 29.4	≥ 30 (27)	≥ 30 (20)
Load softening temperature ° C T ₂		≥ 1650	≥ 1600
Reheating linear change%			1500 ℃ × 4h ± 0.2
Thermal expansion rate of 10 ° C%	≤ 1.3
The 0.2MPa creep%	1550 ° C × 50h ≤ 1.0	1500 ° C × (5 to 25) h ≤ 0.13	1500 ° C x (20 to 50) h ≤ 0.2

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