工程科学学报2017，Vol.39Issue(9)：1305-1312,8.DOI:10.13374/j.issn2095-9389.2017.09.002
复合激发剂对铜炉渣活性影响及充填材料制备
Effect of compound activator on copper slag activity and preparation of filling materials
摘要
Abstract
The preparation of cementitious materials for filling primarily via the alkali-activated method was discussed to recycle copper slags. A mixture of lime, NaOH, and early-strength agent was selected as a composite activator to carry out copper slag activa-tion and filling material-preparation experiments, and the hydration products were analyzed by X-ray diffraction and scanning electron microscopy. The test results show that the effect of different activators on sample strength follows the order lime > early-strength agent> NaOH. The strengths of slag paste samples at 7 and 28 d post-curing reach 1. 5 and 3. 0 MPa, respectively. The strength of filling materials mixed by copper slag and tailings is 1. 0 MPa as the curing ages are 28 d, and the slurry has well fluidity. These values meet the requirements of a suitable filling material. The early hydration products of copper slag mainly include Ca( OH) 2 and C-S-H gel. As the curing time increases, the Ca/Si ratio of the C- S- H gel decreases and the structure of the hydration products becomes more compact. After curing for 28 d, the active components in the copper slag are nearly completely reacted.关键词
铜炉渣/活性激发/复合激发剂最优配比/充填胶凝剂/水化机理Key words
copper slag/activity excitation/optimal ratio of compound activator/filling gelling agent/hydration mechanism分类
矿业与冶金引用本文复制引用
姜关照,吴爱祥,王贻明,王洪江,兰文涛,刘超..复合激发剂对铜炉渣活性影响及充填材料制备[J].工程科学学报,2017,39(9):1305-1312,8.基金项目
国家自然科学基金资助项目(51374034) （51374034）
国家"十二五"科技支撑计划资助项目(2012BAB08B02) （2012BAB08B02）
北京市科委资助项目(Z161100001216002) （Z161100001216002）
