Energy-saving cement and preparation method therefor
A cement and raw material technology, applied in the field of energy-saving cement and its preparation, can solve the problems of unfavorable high compressive strength concrete mixture, steel slag utilization rate less than 17%, and large accumulation of steel slag, so as to achieve high compressive strength and increase strength , The effect of improving productivity and efficiency
Inactive Publication Date: 2019-12-03
天津市金晟华水泥股份有限公司
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The invention discloses energy-saving cement and a preparation method therefor. The cement comprises the ingredients in parts by weight: 73-86 parts of silicate cement clinker, 2-8 parts of gypsum, 1-5 parts of limestone, 5-10 parts of mineral powder, 1-5 parts of sodium hydroxide and 15-20 parts of steel slag powder, wherein the steel slag powder is obtained through subjecting a steel slag raw material to pulverizing treatment, and a pulverizing assisting combined additive, which accounts for 1% to 2.5% the weight of the steel slag raw material, is added during pulverizing treatment; and thepulverizing assisting combined additive comprises fly ash and colloidal graphite powder which are in a mass ratio of 1: (0.3 to 1.5). The energy-saving cement may also comprise 10-15 parts of modifiedhollow glass beads, wherein the modified hollow glass beads are obtained through treating hollow glass beads with a silane coupler. The preparation method for the cement comprises the steps: preparing the steel slag powder; preparing the modified hollow glass beads; and mixing raw material ingredients of the cement, and then, carrying out cement pulverizing, thereby preparing the energy-saving cement. According to the energy-saving cement and the preparation method therefor, a large volume of steel slag powder is adopted, the waste utilization of the steel slag is achieved, and the blended concrete mixture has the characteristic of high compressive strength.
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