含钒铁水钠镁化预处理提取钒渣的研究

STUDY ON VANADIUM RECOVERY FROM HOT MFTAL CONTAINING VANADIUM WiTH SODA AND MAGNFSIA

研究了采用氧气顶吹法对含钒铁水进行的钠镁化处理。考察了镁砂的加入量、加入时间及渣中Ｎａ＿２Ｏ，ＣａＯ，ＭｇＯ对试验结果的影响，并与钠化提钒进行了比较。１００ｋｇ级中频感应炉试验结果表明：在镁砂用量与碳酸钠用量之比约为１．３的情况下，钒氢化率为８３．２３％，脱硫率为７７．４９％，脱磷率为８３、７９％，碳烧损率为１２．５３％．渣中钒的直接水浸率为９３．８％，并节约了２０％的碳酸钠。

Vanadium recovery from hot metal containing vanadium with soda and magnesia by oxy-gen top blowing is discussed.The effect of the amount of magncsia added,MgO addition time and the Na_2O, CaO,MgO content in the slag is examined.The expcrirnental resuIts show that when MgO/Na_2CO_3 mass radio is about 1.3,the rate of vanadium oxidation is 83.23%,the extent of desufurization,dephosporization and decarbonization is 77.49%,83.19%,12.53%respectively,the rate of vanadium directly leachcd from slag is 93.89%,and 20%saving of soda is achived.