简介概要

MEVVA磁过滤等离子技术制备的Fe纳米颗粒薄膜结构

图书来源:二元合金相图及中间相晶体结构 二元合金相图及中间相晶体结构

作 者:唐仁政 田荣璋

出版时间:2009-05

定 价:320元

图书ISBN:978-7-81105-831-4

出版单位:中南大学出版社

详情信息展示

Cemented backfilling performance of yellow phosphorus slag

Jia-sheng Chen 1,2),Bin Zhao 1),Xin-min Wang 1),Qin-li Zhang 1),and Li Wang 3) 1) School of Resources and Safety Engineering,Central South University,Changsha 410083,China 2) Tongling Chemical Group,Tongling 244100,China 3) College of Safety Science and Engineering,Liaoning Technical University,Fuxin 123000,China

摘 要:The experiments on the cemented backfilling performance of yellow phosphorus slag,including physical-mechanical properties,chemical compositions,optimized proportion,and cementation mechanisms,were carried out to make good use of yellow phosphorus slag as well as tackle with environment problems,safety problems,geological hazards,and high-cost issues during mining in Kaiyang Phosphorus Mine Group,Guizhou.The results show that yellow phosphorus slag can be used as the cement substitute for potential coagulation property.Quicklime,hydrated lime,and other alkaline substances can eliminate the high residual phosphorus to improve the initial strength of backfilling body.The recommended proportions (mass ratio) are 1:1 (yellow phosphorus slag:phosphorous gypsum),1:4:10 (Portland cement:yellow phosphorus slag:phosphorous gypsum),and 1:4:10 (ultrafine powder:yellow phosphorus slag:phosphorous gypsum) with 5wt% of hydrated lime addition,60wt% of solid materials,no fly ash addition,and good rheological properties.The hydration reaction involves hydration stage,solidifying stage,and strength stage with Ca(OH) 2 as the activating agent.The reaction rates of yellow phosphorus slag,Portland cement,and ultrafine powder hydration with the increase of microstructure stability and initial strength.

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