期刊论文

Preparation and Mechanical Properties of Alkali Leaching of Lead Zinc Slag Geopolymer

中文

硅酸盐通报

1001-1625

2018

37

8

2650-2655

10.16552/j.cnki.issn1001-1625.2018.08.051

国家自然科学基金青年项目(51304122) 南华大学“青年英才”人才支持计划(南华政发〔2014〕49号).

本校为第一机构

碱浸铅锌渣是铅锌矿渣中提炼锌粉后产生的碱性废渣。经活化及碱激发处理,可制备地聚物材料,这为碱浸铅锌渣的综合利用提供了新的思路。以碱浸铅锌渣和偏高岭土为原料,以硅酸钠溶液和氢氧化钠为激发剂制备出碱浸铅锌渣地聚物并分析其力学性能。通过正交试验方法考察了碱浸铅锌渣掺量、激发剂模数以及激发剂掺量对碱浸铅锌渣地聚物的力学性能的影响,并采用SEM和XRD技术分析其制备机理。试验结果表明:当液固比为0.5的条件下,碱激发剂模数为1.2,碱激发剂掺量为65%,碱浸铅锌渣掺量为45%时,制备出碱浸铅锌渣地聚物的28 d抗压强度能达到49.6 MPa,且碱激发剂掺量为影响其抗压强度的第一要素;分析原料与产...

Alkali leaching of lead zinc slag is alkaline slag produced in lead-zinc ores after zinc refining.Geopolymer Materials can be prepared after activation and alkali treatment,which provides a new way for comprehensive utilization of this slag.Takeing the alkali leaching of lead zinc slag and metakaolin as raw material,sodium silicate solution and sodium hydroxide as activator,the geopolymer for alkali leaching of lead zinc slag was prepared and the mechanical properties were also analysed.By the method of orthogonal experiments the effects of mec...