【摘要】：以磷石膏,磷渣粉,水泥為主要原料制備磷石膏基充填料,采用水平振蕩法浸溶出其中的可溶性磷、氟及重金屬離子等有害物,探討有害物溶出率與其強度性能之間的關(guān)系。結(jié)果表明:磷石膏基充填料的物料配比為磷石膏65%~75%,磷渣粉22%~30%,水泥3%~5%,外摻石灰2%及減水劑1.5%,水灰比0.28時,可滿足礦山充填料的強度要求。磷石膏基充填料中有害物的溶出率與其強度呈反比,當28d抗壓強度從1.75 MPa增至4.23 MPa時,充填體的可溶磷溶出率從41.32%降至18.97%,氟溶出率從46.52%降至32.22%。
[Abstract]:Phosphogypsum based fillers were prepared from phosphogypsum, phosphate slag powder and cement as main raw materials. Soluble phosphorus, fluorine and heavy metal ions were leached by horizontal oscillatory method, and the relationship between the dissolution rate of harmful substances and their strength and properties was discussed. The results show that the ratio of phosphogypsum based filling material is 65% 鈮，

本文編號：2522473