硅酸盐通报
硅痠鹽通報
규산염통보
BULLETIN OF THE CHINESE CERAMIC SOCIETY
2010年
1期
102-106
,共5页
磷石膏%煅烧温度%硬石膏水泥%激发剂%抗压强度
燐石膏%煅燒溫度%硬石膏水泥%激髮劑%抗壓彊度
린석고%단소온도%경석고수니%격발제%항압강도
phosphogypsum%calcination temperature%anhydrite cement%activator%compressive strength
磷石膏是一种CaSO_4·2H_2O含量很高的细粉,含有P_2O_5和F等杂质,通过洗涤和化学处理都不能完全清除这些杂质.对磷石膏进行高温煅烧,形成硬石膏,将杂质转化成为惰性物质,降低了杂质的危害.试验中比较了煅烧前后杂质含量变化情况,研究了不同激发剂对煅烧后硬石膏产物硬石膏水泥凝结和硬化的影响,以及反应过程中水化作用和结合水之间的关系.通过SEM和XRD分析了硬石膏水泥的微观形成机制.
燐石膏是一種CaSO_4·2H_2O含量很高的細粉,含有P_2O_5和F等雜質,通過洗滌和化學處理都不能完全清除這些雜質.對燐石膏進行高溫煅燒,形成硬石膏,將雜質轉化成為惰性物質,降低瞭雜質的危害.試驗中比較瞭煅燒前後雜質含量變化情況,研究瞭不同激髮劑對煅燒後硬石膏產物硬石膏水泥凝結和硬化的影響,以及反應過程中水化作用和結閤水之間的關繫.通過SEM和XRD分析瞭硬石膏水泥的微觀形成機製.
린석고시일충CaSO_4·2H_2O함량흔고적세분,함유P_2O_5화F등잡질,통과세조화화학처리도불능완전청제저사잡질.대린석고진행고온단소,형성경석고,장잡질전화성위타성물질,강저료잡질적위해.시험중비교료단소전후잡질함량변화정황,연구료불동격발제대단소후경석고산물경석고수니응결화경화적영향,이급반응과정중수화작용화결합수지간적관계.통과SEM화XRD분석료경석고수니적미관형성궤제.
Phosphogypsum is a powder with high CaSO_4·2H_2O content, The P_2O_5 and F impurities present in phosphogypsum can not be removed completely by washing and chemical treatments. When heated at high temperature, phosphogypsum produced an anhydrite and the impurities became inert and harmless. The effects of different activators on setting and hardening of anhydrite cement was studied. The correlation between hydration and chemically combined water was established. The micro formation mechanism of anhydrite cement was examined by SEM and XRD.
