黏土型钒矿分级富集浸出试验的研究

Sieving-concentrating and leaching experiments on clay-vanadium ores

摘要:

将黏土型钒矿进行分级富集，对直接分级得到的精矿及未经分级富集的原矿进行了对比浸出试验研究，考察了硫酸用量、助浸剂A及B对V2 O5浸出率的影响．结果表明，精矿较原矿难浸出，需适当增加硫酸、助浸剂A及B的用量以达到理想的浸出率；浸出1 t的V2 O5所用的硫酸量，精矿的用量比原矿的约节省1／5．

Abstract:

Sieving‐concentrating experiments were done on clay‐vanadium ores .Then ,leaching processes were carried out on the crude ores and concentrates obtained by sieving‐concentrating ,respectively .Influ‐ence of the dosage of sulfuric acid ,additive A and additive B on leaching rate of V2 O5 was studied .Results show the concentrates is more difficult to be leached out than the crude ores .In order to get ideal leaching rate ,an appropriate increase in the dosage of sulfuric acid ,additive A and additive B is especially essential . For per ton of produced V2 O5 ,1/5 less sulfuric acid is needed by concentrates than by crude ores .