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METHOD FOR OXIDIZING TREATMENT OF STEEL PLANT SLAG TO OBTAIN CEMENT-BASED MATERIALS
METHOD FOR OXIDIZING TREATMENT OF STEEL PLANT SLAG TO OBTAIN CEMENT-BASED MATERIALS
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机译:将钢渣矿渣氧化成水泥基材料的方法
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摘要
A method for treating a raw steel plant slag to transform it into a hydraulic binder at least equivalent to a Portland cement clinker, comprises the following steps: oxidizing treatment with input of oxygen, air or a mixture thereof at a pressure ranging between 1 to 15 bars, at a temperature ranging between 1650 and 1400° C., of raw steel slag containing, relative to the raw slag total weight, at least 45 wt. % of CaO and less than 30 wt. % of FeSUB2/SUBOSUB3/SUB; and adding to the slag a lime source optionally with silica and/or alumina, so that the slag, after tranformation and at room temperature, has a propotion of FeSUB2/SUBOSUB3 /SUBof less than 13 wt. % and a mineralogical composition comprising at least 40 wt. % in CSUB3/SUBS mineralogical phase and more than 10 wt. %, of calcium ferrite, relative to the final slag total weight.
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机译:一种将钢厂矿渣转化为至少与波特兰水泥熟料等效的水硬性粘结剂的方法,包括以下步骤:在1至15的压力范围内,通过输入氧气,空气或其混合物进行氧化处理在1650和1400℃之间的温度范围内,相对于粗渣总重量,至少包含45wt。%的粗钢渣。 CaO的百分比小于30 wt。 Fe 2 SUB> O 3 SUB>的百分比;向石灰渣中添加石灰源(可选),该石灰源可选地与二氧化硅和/或氧化铝混合,以使该石灰渣在转化后并在室温下具有Fe 2 SUB> O 3 SUB>小于13 wt。 %和包含至少40重量%的矿物组合物。 C 3 SUB> S矿物学相中的重量百分比,大于10 wt。 %,相对于最终炉渣总重量的铁素体钙。
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