菲律宾红土镍矿液态还原研究

Study on Liquid Reduction of Philippines Nickeliferous Laterite Ore

为提高菲律宾红土镍矿金属回收率,改善熔炼条件,在实验室条件下采用正交试验研究了熔炼温度、配碳量及碱度对Fe、Ni回收率及合金中Fe、Ni含量的影响。试验结果表明,温度对Fe、Ni回收率影响最大,配碳量次之,碱度影响最小。温度为1 550℃,配碳量为6.0%,碱度为1.1时,Fe、Ni回收效果较好,回收率接近用Factsage进行计算所得到的理论值。对合金中Fe、Ni含量影响最大的是碱度,其次是温度,影响最小的是配碳量。当温度为1 450℃,碱度为1.0时合金中Fe、Ni含量较高。

In order to improve the recovery ratio of metal elements like Fe and Ni from Philippines nickeliferous laterite and melting conditions,orthogonal experiments were designed to investigate the effects of temperature,addition of carbon and slag basicity on the recovery results and the content of Fe and Ni in the metal.It shows that the temperature is more significant than the carbon addition and slag basicity on the recovery ratio of Fe and Ni.The recovery ratio of Fe and Ni is higher,which are close to the theoretical values calculated with Factsage,when the temperature is 1 55 0 ℃,basicity is 1.1 and the carbon dosage is 6.0%.On the other hand,basicity is more significant than the temperature and the carbon addition on the Fe and Ni content in the metal.The Fe and Ni content in the metal are higher when basicity is 1.1 and the temperature is 1 55 0 ℃.