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钛白粉生产废渣含有大量铁,钛及微量钪。为从中提取纯度为98％的氧化钪,马鞍山矿山研究院研究了新工艺流程:将生产钛白粉的废酸经预处理,以抑制萃取剂对铁钛萃取,将钪萃取进入有机相,经酸洗使大部分铁钛与其他杂质从有机相中洗脱,留下来的钪则在反萃时进入水相而沉淀,再经化学精制,煅烧出氧化钪。该工艺流程的技术特
Titanium dioxide production waste contains a lot of iron, titanium and trace scandium. In order to extract scandium oxide with a purity of 98%, the Maanshan Mining Research Institute has studied the new technological process: pretreated waste acid from the production of titanium dioxide to inhibit extraction of iron and titanium from the extractant, extraction of scandium into the organic phase, Washing most iron and titanium and other impurities from the organic phase elution, scandium left in the stripping into the water phase and precipitation, and then refined by chemical, calcined scandium oxide. The technical process of the special