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对复杂硅酸盐含钪矿进行了化学成分分析,钪物相的测定等的研究。研究是在复杂硅酸盐类矿物选钪试验的基础上,进行复杂硅酸盐含钪精矿浸出助浸剂试验研究,通过试验研究找到了合适的浸出液和适当的助浸剂,对有用离子进行浸出富集,对有害的离子使其保留在浸渣中。试样的钪以类质同象分布于多种复杂硅酸盐矿物中,研究采用盐酸添加浸出助浸剂来解离硅酸盐类矿物,把钪元素浸出在盐酸溶液之中。浸出助浸剂是影响钪浸出率的主要因素之一,在盐酸作为浸出试剂基础上,本研究对助浸剂种类、用量、液固比、浸出时间、盐酸浓度、浸出温度及入浸物料粒度等条件进行了试验研究。研究表明:(1)本试样的成分复杂,含众多杂质离子,包含对浸出有很大影响的的活泼金属离子,和对后续萃取有很大影响的钙、镁离子等杂质离子。(2)盐酸加二号助浸剂时钪的浸出效果最佳,其最佳工艺条件为:入浸物料粒度为-0.05 mm,液相中HCl质量分数为15.2%,液固比5:1,添加二号助剂量为4%,温度为90℃,连续搅拌浸出时间为12 h,钪的浸出率达88.33%。
The complex silicate containing scandium ore chemical composition analysis, determination of scandium phase research. The study is based on the complex silicate minerals scandium test, based on complex silicate scandium concentrate leaching leaching agent experimental research, through the experimental study to find a suitable leachate and appropriate additives, the useful ions Leaching enrichment, the harmful ions to keep in the leachate. The scandium in the sample is distributed in many kinds of complex silicate minerals in the same body and image. The research uses the hydrochloric acid to add leaching aid to dissociate the silicate minerals, and the scandium element is leached in the hydrochloric acid solution. Leaching aid is one of the main factors that affect the leaching rate of scandium. Based on hydrochloric acid as leaching reagent, this paper studied the effects of the type, dosage, liquid-solid ratio, leaching time, hydrochloric acid concentration, leaching temperature and the particle size Other conditions were tested. The results show that: (1) The sample is complex in composition with many impurity ions, including active metal ions that greatly affect the leaching, and impurity ions such as calcium and magnesium ions that greatly affect the subsequent extraction. (2) The leaching effect of scandium was the best when hydrochloric acid plus dipping aid was added. The optimum technological conditions were as follows: the particle size of the impregnated material was -0.05 mm, the mass fraction of HCl in the liquid phase was 15.2% and the liquid-solid ratio was 5: 1 , The amount of additive No. 2 was 4%, the temperature was 90 ℃, the leaching time of continuous stirring was 12 h and the leaching rate of scandium was 88.33%.