铌铁矿及白云石的抑制作用研究  

Study on Depression about Niobite and Dolomite

作　　者：任皞[1] 纪绯绯[1] 宋桂兰[1] 

机构地区：[1]济南大学化学化工学院,济南250022

出　　处：《有色金属》2004年第41期100-102,共3页Nonferrous Metals

摘　　要：考查 4种抑制剂对铌铁矿及白云石的选择性抑制性能。结果表明 ,PDC是 4种抑制剂中抑制白云石浮选铌铁矿的理想抑制剂 ,对白云石的抑制远强于铌铁矿 ,可用浮选法在捕收剂双膦酸用量 14 0mg/L ,矿浆 pH =5 0的弱酸性条件下从粗选精矿产品中除去白云石以提高精矿质量。 4种抑制剂对两种矿物的选择性抑制顺序为PDC >六偏磷酸钠 >羧甲基纤维素 >草酸。The selective depression performance of four type depressants for niobite and do lomite is described. The results show that PDC is a good depressant to the dolo m ite and the depression effect upon dolomite is much stronger than niobite, by wh ich the dolomite can be removed from rough concentrate in the flotation to impro ve niobium-bearing concentrate quality under the condition of diphosphonic acid concentration 140mg/L and pH 5.0. The effect of four type selective depressant s on both niobite and dolomite are put in the following order: PDC > hexa-meta-p hosphate > carboxyl-methyl-cellulose > oxalic acid.

关 键 词：铌铁矿 捕收剂 白云石 浮选 矿浆 双膦酸 精矿 PDC 羧甲基纤维素 六偏磷酸钠 

分 类 号：TG454[金属学及工艺—焊接] TD955[矿业工程—选矿]