CAJ | 학술논문

烧结脱硫灰渣是半干法脱硫排放的废弃物.灰渣含有亚硫酸钙和飞灰等不稳定矿物成分，使得该废弃物利用面临困难.针对铁矿全尾砂胶结充填法采矿对廉价的胶凝材料的需求，采用烧结脱硫灰渣和水淬渣，开展了制备全尾砂充填胶凝材料试验研究.以生石灰作为碱激发剂，硫酸盐作为辅助激发剂，对矿渣微粉活性实施复合激发.首先采用正交设计进行试验方案设计；然后采用极差分析对数据进行处理和配比决策，最后以阶段嗣后充填采矿对其强度要求，建立并求解全尾砂新型充填胶凝材料的优化模型，获得了充填胶凝材料的优化配比.结果显示，当胶砂比为1∶8、料浆浓度为68%时，以生石灰和烧结脱硫灰渣作为水淬渣复合激发剂制备的新型充填胶凝材料，烧结脱硫灰渣比例达到10%时，3 d、7 d及28 d的胶结充填体强度不低于相同条件下的32.5R早强水泥，而胶凝材料成本低于水泥材料.
소결탈류회사시반간법탈류배방적폐기물.회사함유아류산개화비회등불은정광물성분，사득해폐기물이용면림곤난.침대철광전미사효결충전법채광대렴개적효응재료적수구，채용소결탈류회사화수쉬사，개전료제비전미사충전효응재료시험연구.이생석회작위감격발제，류산염작위보조격발제，대광사미분활성실시복합격발.수선채용정교설계진행시험방안설계；연후채용겁차분석대수거진행처리화배비결책，최후이계단사후충전채광대기강도요구，건립병구해전미사신형충전효응재료적우화모형，획득료충전효응재료적우화배비.결과현시，당효사비위1∶8、료장농도위68%시，이생석회화소결탈류회사작위수쉬사복합격발제제비적신형충전효응재료，소결탈류회사비례체도10%시，3 d、7 d급28 d적효결충전체강도불저우상동조건하적32.5R조강수니，이효응재료성본저우수니재료.
The sintering desulfurization ash is the waste produced by a semi dry Flue Gas Desulfurization (FGD) system. The desulfurization ash, which consists of some unstable mineral compositions, such as CaSO3 and f-CaO, is difficult to recycle. Considering the demand of low cost cementing material for filling stoping in iron mine, a new filling cementing material is prepared with sintering desulfurization ash and water-quenched slag. It is manufactured by a composite activator , composed of quicklime and sulfate , while the quicklime is the main activator and the sulfate is an auxiliary excitation agent. Firstly , the orthogonal design is adopted and implemented. Then, the range analysis is taken and the optimal ratio can be obtained. Finally , an optimal model of composite activator ratio is established and solved by the regression analysis. In view of the requirements in filling stoping, the optimal proportion is obtained. It shows that, when the adding amount of the sintering desulfurization ash is up to 10 %, the mass ratio of the cementing material to tailing being 1∶8 and the concentration (by mass) of backfilling slurry being 68%, the strength of filling body with the age of 3 days, 7 days, 28 days are higher than that of 32.5R cement in the same conditions , as the cost is much lower.