CAJ | 학술논문

固体废弃物磷石膏大量的堆放既占用土地，又会对环境造成污染，以磷石膏为原料制备半水硫酸钙晶须是拓展磷石膏综合利用的新途径。以安徽新中远化工科技有限公司提供的磷石膏为样品，利用样品磷石膏及经过水洗净化处理的磷石膏为原料，分别在优化的条件下水热和煅烧合成半水硫酸钙晶须。通过FT-IR、XRD、SEM等对样品与产品进行表征，并对其各项表征结果作对比分析。结果表明：水洗净化后的磷石膏合成的晶须纯度较高；优化条件下水热和煅烧合成的晶须均为半水硫酸钙晶须，且煅烧合成的晶须效果较水热合成的晶须好。
고체폐기물린석고대량적퇴방기점용토지，우회대배경조성오염，이린석고위원료제비반수류산개정수시탁전린석고종합이용적신도경。이안휘신중원화공과기유한공사제공적린석고위양품，이용양품린석고급경과수세정화처리적린석고위원료，분별재우화적조건하수열화단소합성반수류산개정수。통과FT-IR、XRD、SEM등대양품여산품진행표정，병대기각항표정결과작대비분석。결과표명：수세정화후적린석고합성적정수순도교고；우화조건하수열화단소합성적정수균위반수류산개정수，차단소합성적정수효과교수열합성적정수호。
Solid waste phosphogypsum( PG)piled up both occupy the land and cause deleterious pollution to the environment,therefore. Thus,a new strategy for developing the comprehensive utilization of PG was explored to use PG as the raw material to prepare calcium sulfate hemihydrate( CSH)whisKer. PG was utilized as the sample to synthesize CSH whisKer. The sample of phosphogypsum was washed with water to purify as raw materials. Calcium sulfate hemihydrate whisKers were synthesized at optimal conditions by hydrothermal and calcined methods,respec-tively. FT-IR,XRD and SEM were recorded to characterize the samples and products. By the comparison and analy-sis of characterization results,which indicated that the synthesized whisKers from phosphogypsum purified with water were much purer than those of phosphogypsum unpurified. Under the optimized conditions,both hydrothermal and calcined synthesis whisKers were CSH whisKer,and the effect of calcined-synthesis whisKer was much better than that of the hydrothermal-synthesis whisKer.