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由钠化钒渣制取的钒酸钙代替钒铁,用作电弧炉冶炼含钒低合金钢的合金料,经11炉试验结果,钒的回收率平均达90％。从钠化钒渣到低钒合金铜过程,“钒酸钙直接合金化”流程与“V_2O_5炼钒铁再合金化”流程相比,工艺流程缩短近一半,钒的总回收率提高15％左右,每吨钢成本降低19.32元。钒酸钙制球,在钢包合金化,钒的回收率也能达到85％。试验证明,此流程是从钠化钒渣中提取利用钒的最有效途径。
The vanadium calcium slag prepared from sodium vanadium slag instead of ferrovanadium, used as electric arc furnace smelting low-alloy steel containing vanadium alloy, 11 furnace test results, vanadium recovery average 90%. From the process of sodium vanadium slag to low vanadium alloy copper, the process of “direct alloying with calcium vanadate” is shortened by nearly half compared with the process of “V2O5 refining vanadium iron re-alloying”, and the total recovery of vanadium is increased by about 15% , Reducing the cost of steel 19.32 yuan per ton of steel. Calcium vanadate system ball, ladle alloying, vanadium recovery rate can reach 85%. Test proved that this process is extracted from the sodium vanadium slag the most effective way to use vanadium.