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Refractory Bricks For Electric Arc Furnace Roofs

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Place of Origin： China - Shandong - Zibo

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项目 \ 牌号		Burned bricks烧成砖					不烧砖Unburned Bricks
项目 \ 牌号		DL-80	DL-75	DL-65	DL80P	DL85P	BDL-80	BDL-75	BDL65	DL80P-B
Al₂O₃ %		≥80	≥75	≥65	≥75	≥80	≥80	≥75	≥65	≥70
Fe₂O₃ %					≤1.7	≤1.7				≤1.7
耐火度 ℃							≥1780	≥1780	≥1770
荷重软化温度KD ℃		≥1530	≥1520	≥1520			≥1530	≥1520	T2≥1470
(1500 ℃×2h)重烧线变化率 %		0.2～-0.4	0.2～-0.4	0.2～-0.4
显气孔率 %	炉顶砖	≤19	≤19	≤19	≤18	≤19	≤18	≤18	≤19	≤19
显气孔率 %	拱角砖	≤21	≤21		≤18	≤19	≤20	≤20		≤19
常温耐压强度 Mpa		≥75	≥65	≥58.8	≥50	≥80	≥60	≥55	≥30	≥50
热震稳定性,次(1100℃ 水冷)							≥8
用途		炼钢电炉炉盖

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