Effect of nickel oxide additive on smelting mechanism of chromium-bearing vanadium titanomagnetite pellets
The effect of nickel oxide additive on the smelting behaviors of chromium-bearing vanadium titanomagnetite pellets (CVTP) was investigated while analyzing the transfer behavior of nickel in iron and slag. The results show that when NiO added to CVTP increases from 0 to 6 wt.％, softening start temperature increases from 1148 to 1212 °C, and the softening end temperature increases from 1280 to 1334 ℃; the melting start temperature increases from 1318 to 1377 ℃, and the dripping temperature decreases from 1558 to 1521 ℃. The pig iron comprises a compound of Fe-Ni-C. The slag structure depolymerizes with increasing nickel addition. The softening-melting behaviors of CVTP, the reduction of nickel into pig iron, and the depolymerization of slag structure indicate the feasibility of producing nickel-iron alloy through the blast furnace process.
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万方数据
维普
