炼钙还原渣和煤矸石制备聚合氯化铝的研究  

Preparation of polyaluminum chloride from calcium reducing slag and coal gangue

作　　者：张翔[1] 段建榜 李瑞歌[2] 陈淼[1] 卢艳洁 

机构地区：[1]郑州大学化工与能源学院,河南郑州450001 [2]湘潭大学化工学院

出　　处：《无机盐工业》2016年第4期66-68,共3页Inorganic Chemicals Industry

摘　　要：采用煅烧后的煤矸石酸浸液与炼钙还原渣反应制备聚合氯化铝(PAC)。考察了炼钙还原渣投加量、反应时间和反应温度对PAC性能的影响,并采用红外、热重分析对其进行表征,结果表明:向酸浸液中加入一定量炼钙还原渣,在95℃下反应4 h,便可得到三氧化二铝质量分数为28.1%、盐基度为68.9%的固体PAC,符合GB/T22627—2014《水处理剂聚氯化铝》的要求。The polyaluminum chloride （PAC） was prepared by using calcium reducing slag and acidic leaching liquid of calcined coal gangue as raw materials.The influences of dosing quantity of calcium reducing slag,reaction time,and reaction temperature on the performance of PAC were investigated.The obtained samples were characterized by fourier transform infrared （FT-IR） and thermogravimetric analysis （TGA）.Results showed that the solid PAC product with A1203 mass fraction of 28.1% and basicity of 68.9% was obtained when a certain amount calcium reducing slag was added into the acidic leaching liquid of calcined coal gangue, and reacted at 95 ℃ for 4 h.The final PAC product conformed to the national standard Water Treatment Chemical-Poly Aluminium Chloride, GB/T 22627-2014.

关 键 词：炼钙还原渣 煤矸石 聚合氯化铝 盐基度 

分 类 号：TQ133.1[化学工程—无机化工]