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本文以酸浸锰渣为主要原料制备烧结试块,研究了烧成温度、成型压力、粘土掺入量和电石渣掺入量等因素对试块抗压强度和相组成结构的影响。结果表明:当烧成温度1100℃,成型压力15 MPa,酸浸锰渣81%,粘土掺量9%,电石渣掺量10%时,烧结试块的抗压强度达到最大,可达到63.52 MPa;该条件下的XRD分析表明,鳞石英、钙硅石等新晶相生成,硬石膏含量增大,以赤铁矿、石英和硬石膏为骨架,赋予试样强度,硬石膏含量的增大说明起到了固硫的作用,环保效益明显。
In this paper, the acid leaching of manganese slag as the main raw material for the preparation of sintered test blocks, the sintering temperature, molding pressure, the amount of clay incorporated and the amount of calcium carbide dregs and other factors on the specimen compressive strength and phase composition of the structure. The results show that the maximum compressive strength of the sintered samples reaches 63.52 MPa when sintering temperature 1100 ℃, forming pressure 15 MPa, acid leaching manganese residue 81%, clay content 9% and calcium carbide slag content 10% ; XRD analysis under this condition shows that the new crystal phase such as tridymite and gassite is formed, the content of anhydrite increases, and the hematite, quartz and anhydrite are used as the skeleton to give the strength of the sample and the increase of anhydrite content Played a role in sulfur fixation, environmental benefits are obvious.