川北铝土岩型钒矿钒的赋存状态与可选性实验研究

川北铝土岩型钒矿是一种新发现的钒矿床类型，通过开展钒的工艺矿物学及可选性研究，发现钒有两种赋存状态:主要呈钒云母的独立矿物形式存在，另一种则呈类质同象的形式存在于绢云母和伊利石中。钒的可选性实验研究表明该铝土岩型钒矿经济可选，采用“重选选硫-尾矿氧化焙烧碱浸钒钼-浸渣选粘土”的选冶联合工艺，可以有效回收矿石中有价元素钒、钼，并综合利用矿石中伴生的黄铁矿和粘土矿物。其中，钒的渣计浸出率74.42%、液计浸出率75.97%，钼的渣计浸出率88.77%、液计浸出率91.00%。 

Study on Occurrence and Optionality of Vanadium in Bauxite-type Vanadium Deposits,Northern Sichuan.

Bauxite-type vanadium deposit in north sichuan is a newly discovered type of vanadium deposit. Through the study of process mineralogy and selectivity of vanadium, it is found that vanadium has two kinds of occurrence states: The main is an independent mineral in the form of vanadite, and the other is in the form of isomorphism in sericite and illite. The experimental study on the washability of vanadium ore shows that the bauxite type vanadium ore is economic. The valuable element vanadium and molybdenum in ore can be recovered effectively by the combined flowsheet of “ Recovery of sulfide by heavy separation- recovery of vanadium and molybdenum from tailings by roasting in air and alkaline leaching-Recovery of clay ore by leaching residue”. The associated pyrite and clay minerals in ore are utilized synthetically. After the test, the slag leaching rate of vanadium is 74.42%, the liquid leaching rate of vanadium is 75.97%, the slag leaching rate of molybdenum is 88.77%, the liquid leaching rate of molybdenum is 91.00%.