消解钛石膏制备低碳型水泥应用技术及经济分析

    Application Technology and Economic Analysis of Low Carbon Cement Prepared by Titanium Gypsum

    • 摘要: 为了应对全球气候变化,人们必须在“要水泥”和“去CO2”两方面采取合理的平衡措施。本文提出将攀西地区的含水量50%的钛石膏原料经过压滤后,与提钛尾渣、钢渣、炉渣、粉煤灰等其他固废原料生产超硫酸盐水泥(SSC)。本文创新性地采用Millpebs异性介质球磨技术并利用铁杂质胶凝特性,通过性能分析,明晰水化机理,计算CO2减排效果,形成“一磨”低碳型SSC制备工艺。此方法在达到消解钛石膏(掺量>10%)、提钛尾渣及降低水泥成本的同时,SSC满足国标海工盐水泥32.5强度标准,为我国早日实现碳达峰、碳中和做出贡献。

       

      Abstract: To deal with global climate change, people have to strike a balance between "cement" and "CO2 reduction". A new method was proposed to produce super sulfate cement (SSC) by pressing and filtering the titanium gypsum raw material with 50% water content in Panxi Area, and fully mixed it with other solid wastes such as titanium extraction tailings, steel slag, furnace slag and fly ash. This gelling properties of Fe and Millpebs ball mill technology were used to combine with other wastes innovatively. The low-carbon preparation process with "One Mill" process and hydration mechanism of SSC were clarified by physical and mechanical analysis, and the CO2 emission reduction effect was also calculated. The goals of heighten the ratio of titanium gypsum (content > 10%) in the SSC and reduction the cost were not only achieved, the performance of SSC were in line with national standard (32.5). It will make a contribution to realize the carbon peak and carbon neutralization.

       

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