本文選題：鉛鋅冶煉廢水中和渣　切入點(diǎn)：免燒免蒸磚　出處：《中國(guó)礦業(yè)》2017年S2期 　論文類(lèi)型：期刊論文

【摘要】：以某鉛鋅冶煉廢水中和渣資源化綜合利用制備免燒免蒸磚。在原料主要化學(xué)成分分析、XRD物相分析及中和渣溶出和干燥凝結(jié)性能分析的基礎(chǔ)上,設(shè)計(jì)L16(4)5正交試驗(yàn),通過(guò)極差和方差分析得到不同制磚組分對(duì)免燒免蒸磚7d和28d強(qiáng)度的作用規(guī)律和制備免燒磚的最佳試驗(yàn)配方,然后在最優(yōu)配方下研究成型壓力和水灰比與免燒免蒸磚性能的關(guān)系。研究結(jié)果表明,影響免燒免蒸磚7d抗壓強(qiáng)度的配比組成用量因素排名為水泥、水渣微粉、混合中和渣、粉煤灰、石屑;影響免燒免蒸磚28d抗壓強(qiáng)度的配比組成用量因素排名為混合中和渣、水渣微粉、石屑、粉煤灰、水泥。最佳試驗(yàn)配方為混合中和渣31.43%,水泥14.29%,水渣微粉31.43%,粉煤灰13.33%,石屑9.52%;最佳水灰比為0.14,合適的成型壓力為20MPa,最終制備的免燒免蒸磚28d抗壓強(qiáng)度為27.7 MPa,吸水率為11.5%,軟化系數(shù)為0.89,抗凍指標(biāo)為F25,達(dá)到《〈非燒結(jié)垃圾尾礦磚〉》(JC422—2007)的標(biāo)準(zhǔn)要求。
[Abstract]:Based on the comprehensive utilization of neutralization and slag from a certain lead-zinc smelting wastewater to prepare non-fired non-steam brick, based on the analysis of the main chemical composition of raw materials, XRD phase analysis, dissolution and drying setting performance of neutralized slag, the orthogonal test of L16C4N5 was designed. By means of range difference and variance analysis, the effects of different brick components on the strength of non-fired non-steamed brick for 7 days and 28 days were obtained, and the optimum experimental formula for preparing unfired brick was obtained. Then the relationship between the molding pressure and the water-cement ratio and the properties of the non-fired non-steam brick was studied under the optimum formula. The results showed that the factors affecting the compressive strength of the non-fired non-steam brick in 7 days were cement, water slag powder, mixed neutralizing slag, and so on. The factors affecting the compressive strength of non-fired non-steam brick for 28 days are mixed neutralizing slag, water slag micro-powder, stone debris, fly ash, etc. Cement. The best test formula is mixed neutralizing slag 31.43um, cement 14.29, water slag micro-powder 31.43um, fly ash 13.33, stone debris 9.52. The optimum water-cement ratio is 0.14, the suitable molding pressure is 20MPa, and the final non-fired non-steam brick has 28d compressive strength of 27.7 MPa and water absorption ratio of 11.5mm. The softening coefficient is 0.89 and the freezing resistance index is F25, which meets the standard requirement of < < unsintered refuse tailings brick > > JC422-2007).
【作者單位】： 北京建筑大學(xué);北京礦冶研究總院礦物加工科學(xué)與技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【分類(lèi)號(hào)】：TU522.1;X758

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本文編號(hào)：1642408