摘要
通过现场中试试验,探讨了磷石膏作为免烧建筑砌块主要原料配比和生产工艺及实现磷石膏废渣规模化开发利用的可行性.根据免烧砌块生产线试产,分析了轮碾、中和消化、搅拌、成型、养护每一技术环节在砌块物料加工及制品成型中所起的作用和机理,确定了磷石膏免烧建筑砌块切实具体的生产工艺流程,即轮碾工艺中采用3 t碾轮运行10 min,后经10 h堆放中和消化,进入强制式双轮搅拌机搅拌12 min,期间均匀喷入增强剂和耐水剂.采用20MPa压力下振动压实的方式使砌块成型,最后太阳能养护房内蒸养.实验证实该工艺生产的磷石膏砌块物理力学指标均达到国家关于建筑砌体用材的各项要求.用该工艺对工业废渣磷石膏规模化生产免烧砌块,能减少无序排放带来的污染,更能作为磷化工企业新的经济增长点,具有显著的社会效益和经济效益,是对建设资源节约性,环境友好性社会的又一贡献.
Through the field pilot test,the paper explores the main raw material proportioning and manufacturing technique of the phosphogypsum unburned building blockand the feasibility of the phosphogypsum-residue to be developed and utilized on a large-scale.The effect and mechanism of each technology link during the processing and molding are analyzed according to the unburned block production line pilot run.The specific production process of the phosphogypsum unburned building block has been confirmd.In the wheelgrinding process,the main raw materials are wheel-grinded three minutes firstly. Then,they are stacked together to be cured 10 hours.Next,they are put into the forced two-wheel blender to mix 12 min,during which the strengthening agent and water resistance are injected.The vibrating compaction is adopted to formblockswith 20 million mpa pressure.They are finally maintained inside the solar room.The experiment proves the process of phosphorus gypsum block about physical and mechanical indexes meet the national construction of masonry material requirements. Thetechnology,which can mass produce unburned blockswith industrial waste phosphogypsum,can reduce the disorderly emissions of pollution and bring new economicgrowth point for the phosphorus chemical industry.With significant social and economic benefits,it is another contribution to builda resource-saving and environment-friendly society.
作者
潘登
张电吉
罗惠华
吝曼卿
王章琼
PAN Deng;ZHANG Dianji;LUO Huihua;LIN Manqing;WANG Zhangqiong(Sehool of Resources and Civil Engineering, Wuhan Institute of Technology, Wuhan 430073, China;School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China)
出处
《湖北民族学院学报（自然科学版）》
CAS
2017年第1期81-87,共7页
Journal of Hubei Minzu University(Natural Science Edition)
基金
国家自然科学基金项目(51474159
51504167)
关键词
磷石膏
免烧砌块
搅拌
消化
轮碾
振动压制成型
养护
phosphogypsum
unburned block
stir
curing
wheel - grind
vibrating compaction
maintenance
