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Strong, dense refractory material prodn. - from alumina, chrome-iron ore and phosphoric acid or aluminium phosphate
Strong, dense refractory material prodn. - from alumina, chrome-iron ore and phosphoric acid or aluminium phosphate
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机译：坚固，致密的耐火材料制品。 -来自氧化铝，铬铁矿和磷酸或磷酸铝
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摘要
Refractory material is produced from 65-96 wt.% (pref. 70-96 wt.%) of crude alumina (Al2O3 content =99%), 3-25 wt.% of a chrome-irone ore (iron chromite), and 1-10 wt.% (calculated as P2O5) of H3PO4 and/or aluminium phosphate. The mixt. may contain up to 10 wt.% of calcined alumina. The chrome-irone ore contains 35-50% Cr2O3, 15-35% FeO and 25-40% of oxides of Si, Mg, Ca, Al and/or other metals. The addition of H3PO4 and/or AlPO4 increases the strength and bulk density of the product and reduces its porosity.
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机译：耐火材料是由65-96 wt。％（优选70-96 wt。％）的粗氧化铝（Al2O3含量> = 99％），3-25 wt。％的铬铁矿石（亚铬铁），和1-10重量％的H 3 PO 4和/或磷酸铝（以P 2 O 5计算）。混音。可以包含至多10重量％的煅烧氧化铝。铬-铱矿石包含35-50％的Cr 2 O 3，15-35％的FeO和25-40％的Si，Mg，Ca，Al和/或其他金属的氧化物。 H 3 PO 4和/或AlPO 4的添加增加了产品的强度和堆积密度，并降低了其孔隙率。
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