本文選題：高鐵錳礦石 + 預還原��； 參考：《金屬礦山》2017年03期

【摘要】：高鐵錳礦往往因錳、鐵礦物共生關系密切,嵌布粒度細,部分錳鐵呈類質同象形態(tài)存在,導致機械方法難以分離錳鐵。試驗以鐵品位為42.32%、錳品位為9.24%的某高鐵錳礦為原料,開展了熔融還原"二步法"分離錳鐵工藝研究。試驗結果表明,礦石在預還原溫度為1 050℃,預還原時間為90 min,總碳鐵比為1.8(內配碳碳鐵比為0.1)的條件下預還原,所得預還原產品的全鐵品位和鐵金屬化率分別為56.36%和95.49%;預還原產品在熔分溫度為1 450℃、熔分時間為20 min、熔分階段碳鐵比為0.05條件下進行渣鐵分離,鐵水鐵品位高達93.77%、鐵回收率達98.24%、含錳1.18%,富錳渣錳品位為32.18%、錳回收率為93.98%,鐵、錳分離效果良好。
[Abstract]:Ferromanganese ore often has close symbiotic relationship with manganese and iron minerals, with fine intercalated granularity, and some ferromanganese is in the form of similar material, which makes it difficult to separate ferromanganese by mechanical method. In the experiment, a ferromanganese ore with 42.32 iron grade and 9.24% manganese grade was used as raw material, and the process of separating ferromanganese by melting reduction "two-step method" was studied. The results show that the pre-reduction temperature is 1050 鈩，

本文編號：2083144