高炉渣水热法制备含铝水合硅酸钠  

Preparation of Aluminiferous Hydrated Sodium Silicate By Hydrothermal Method from Blast Furnace Slag

作　　者：尤润泽 王平[1] 李辽沙[1] 

机构地区：[1]安徽工业大学冶金减排与资源综合利用教育部重点实验室,安徽马鞍山243002

出　　处：《安徽工业大学学报（自然科学版）》2017年第2期115-119,共5页Journal of Anhui University of Technology（Natural Science）

基　　金：安徽省冶金固废材料化利用技术创新团队项目;安徽省高等学校省级自然科学研究项目(KJ2016A811);安徽省科技计划项目(1606c08220)

摘　　要：以高炉渣为原料,氢氧化钠为溶剂,采用水热法制备含铝水合硅酸钠,研究反应温度、氢氧化钠浓度、反应时间和碱渣质量比对SiO_2转化率的影响规律。结果表明,制备含铝水合硅酸钠较为适宜的工艺条件为:氢氧化钠浓度为3.0 mol·L^(-1),反应温度为130℃,氢氧化钠与高炉渣质量比为0.8,反应时间为4 h,此条件下的SiO_2转化率为84.3%。以SiO_2转化率为指标,通过正交试验进一步考察反应温度、氢氧化钠浓度、反应时间和碱渣质量比各因素对SiO_2转化率的影响,得出各因素影响程度为氢氧化钠浓度>反应温度>碱渣质量比>反应时间。Taking blast furnace slag as raw material and sodium hydroxide as solvent, aluminiferous hydrated sodium silicate was prepared via hyrothermal method. The effects of reaction temperature, sodium hydroxide concentration, reaction time and mass ratio of alkali to slag on the conversion rate of SiO2 were researched. The results show that the optimum reaction conditions are as follows： the concentration of sodium hydroxide was 3.0 mol·L-1,the alkali treatment temperature is 130 ℃, the mass ratio of sodium hydroxide to slag is 0.8, the reaction time is 4 h and the conversion rate of SiO2 is 84.3%. Furthermore, taking the conversion rate of SiO2 as index, the effects of reaction temperature, sodium hydroxide concentration, reaction time and mass ratio of alkali to slag on the conversion of SiO2 were investigated via orthogonal experiment. The results show that the degree is in order of concentration of sodium hydroxide〉alkali treatment temperature〉ratio of alkali to slag〉reaction time.

关 键 词：高炉渣 水热法 含铝水合硅酸钠 

分 类 号：X754[环境科学与工程—环境工程]