全尾砂充填絮凝沉降药剂最佳添量试验探究
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摘要
以金山金矿全尾砂和聚丙烯酰胺(PAM)为试验原料进行静态絮凝沉降试验。通过全尾砂自然沉降试验以及多次单因素絮凝沉降试验,探究了砂浆给料浓度及絮凝剂添量对全尾砂沉降速度和沉降浓度的影响,并且寻求到一种简易直观的尾液检测方法,据此探讨了最佳絮凝沉降效果所需添量与最佳絮凝剂添量之间的关系。综合多方面因素,给出了矿山最佳砂浆给料浓度为25%,最佳絮凝沉降效果所需添量为25 g/t,最佳絮凝剂添量为20 g/t。
Static flocculation and sedimentation experiments were carried out on polyacrylamide( PAM) and classified tailings from Jiangxi gold mining mine. Through static natural sedimentation and repeated univariate experiments,the research explored the effect of feed concentration and flocculant addition amount on the sedimentation velocity and concentration of tailings,and got hold of a simple and direct detection method for residual liquid. According to the experiments,the relationship between the optimum flocculant addition amount for flocculation and sedimentation and the optimum flocculant addition amount was discussed. Comprehensive analysis takes that the optimum feed concentration is 25 %,the optimum flocculant addition amount for flocculation and sedimentation is 25 g / t and the optimum flocculant addition amount is 20 g / t.
Static flocculation and sedimentation experiments were carried out on polyacrylamide( PAM) and classified tailings from Jiangxi gold mining mine. Through static natural sedimentation and repeated univariate experiments,the research explored the effect of feed concentration and flocculant addition amount on the sedimentation velocity and concentration of tailings,and got hold of a simple and direct detection method for residual liquid. According to the experiments,the relationship between the optimum flocculant addition amount for flocculation and sedimentation and the optimum flocculant addition amount was discussed. Comprehensive analysis takes that the optimum feed concentration is 25 %,the optimum flocculant addition amount for flocculation and sedimentation is 25 g / t and the optimum flocculant addition amount is 20 g / t.
引文
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[4]杨超,郭利杰,许文远,等.充填尾砂絮凝沉降规律试验研究[J].黄金,2014,35(6):39-42.
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[2]董芳.絮凝机理及絮凝剂发展概况[J].科技信息,2008(28):43-44.
[3]焦华喆,王洪江,吴爱祥,等.全尾砂絮凝沉降规律及其机理[J].北京科技大学学报,2010,32(6):702-706.
[4]杨超,郭利杰,许文远,等.充填尾砂絮凝沉降规律试验研究[J].黄金,2014,35(6):39-42.
[5]佟庆理.两相流动理论基础[M].北京:冶金工业出版社,1982.