CAJ | 학술논문

为开发利用矿渣和脱硫渣，以矿渣和脱硫灰为主要原料，掺入少量石灰石和活性激发剂后，粉磨制得矿渣脱硫渣基固结剂(矿渣、脱硫灰、石灰石、激发剂的配合比为81∶13∶2．5∶3．5)，并以该固结剂为胶凝材料，以2种不同性质的尾矿为固结对象，对比了固结剂料浆和32．5#水泥料浆的流动度、保水性以及不同养护龄期固结体的无侧限抗压强度。结果表明：固结剂的基本性能指标达到，甚至优于32．5#水泥；固结剂料浆的流动度、保水性均略高于相同条件下的32．5#水泥料浆；提高固结剂的掺量、延长养护时间，其固结体的无侧限抗压强度越高；相同条件下，固结剂固结尾矿的能力明显优于水泥，固结剂掺量为5%时固结体的无侧限抗压强度和水泥掺量为10%的固结体的强度相当。因此，矿渣-脱硫渣基固结剂可以替代32．5#水泥用于尾矿的固结。微观分析表明，随着养护龄期的延长，胶凝材料的水化反应越来越充分，凝胶逐渐充填尾矿颗粒间隙，固结体越来越密实，抗压强度越来越高。
위개발이용광사화탈류사，이광사화탈류회위주요원료，참입소량석회석화활성격발제후，분마제득광사탈류사기고결제(광사、탈류회、석회석、격발제적배합비위81∶13∶2．5∶3．5)，병이해고결제위효응재료，이2충불동성질적미광위고결대상，대비료고결제료장화32．5#수니료장적류동도、보수성이급불동양호령기고결체적무측한항압강도。결과표명：고결제적기본성능지표체도，심지우우32．5#수니；고결제료장적류동도、보수성균략고우상동조건하적32．5#수니료장；제고고결제적참량、연장양호시간，기고결체적무측한항압강도월고；상동조건하，고결제고결미광적능력명현우우수니，고결제참량위5%시고결체적무측한항압강도화수니참량위10%적고결체적강도상당。인차，광사-탈류사기고결제가이체대32．5#수니용우미광적고결。미관분석표명，수착양호령기적연장，효응재료적수화반응월래월충분，응효축점충전미광과립간극，고결체월래월밀실，항압강도월래월고。
In order to utilize slag and desulfurization ash,consolidation agent is synthesized using slag and ash as the main raw material,and adding a small amount of limestone and activator. The optimum mass ratio of slag,ash,limestone,activa-tor is 81 ∶ 13 ∶ 2. 5 ∶ 3. 5. Mortar fluidity and bleeding quantity of tailing cementation slurry,and the unconfined compressive strength after different curing times were tested,taking the two tailings different in property as research object. Experimental re-sults showed that the basic properties of consolidation agent are somehow better than that of 32. 5# cement. Mortar fluidity and bleeding quantity of tailing slurry by using consolidation agent were higher than that of 32. 5# cement. Increasing consolidation agent dosage and extending curing times would be favorable to raise the unconfined compressive strength. The solidification effect of slag-desulfurization ash-based consolidation agent was significantly better than cement under the same conditions. Un-confined compressive strength of indurations compound with 5% consolidation agent is nearly adding 10% cement. Therefore, the slag-desulfurization ash-based consolidation agent can substitute for 32. 5# cement in solidify tailings. The microscopic ex-perimental results indicated that the main reason of raising compressive strength was making cementing material hydration react completely with curing time extending. And gel filled interspace between tailing particles in the hydration reaction of cementing material,which caused the tailings solidification bodies relatively more dense and higher compressive strength.