Dephosphorization of high-phosphorous oolitic hematite carbon-containing pellets in western Hubei
-
摘要: 根據鄂西地區高磷鮞狀赤鐵礦的礦物特性結合煤基直接還原方式的特點進行了脫磷實驗研究,實驗過程中還原煤為哈密煤.實驗結果表明:采用煤基直接還原+磁選工藝在實驗室條件下可以獲得最低磷質量分數為0.031%的鐵精粉;為了達到這一實驗結果,必須保證滿足還原脫磷條件的最佳還原溫度和配碳量(本實驗條件下,最佳還原溫度為1250℃,礦煤比1.25),生球要有適宜磷還原的二元堿度(R ≤ 0.8),適中的原礦粒度(2 mm以下),最后保證達到反應平衡的還原時間(50 min).Abstract: Based on the characters of high-phosphorous oolitic hematite,the dephosphorization research was carried out with the method of coal-based direct reduction,and Hami coal was used in this experiment. The results show that it can get the iron fine with the lowest mass fraction of P 0.031% in the lab after the processes of coal-based direct reduction and magnetic separation. To get the results,it should insure the best reduction temperature and the proper amount of adding carbon (in this experiment,the best reduction temperature is 1 250℃,the mass ratio of ore to coal is 1.25). The wet balls require the proper binary basicity(R ≤ 0.8),and the proper ore size (the ore size is below 2 mm),and finally the reduction time is required to last until the balance of the reaction (50 min).
-
Key words:
- hematites /
- dephosphorization /
- direct reduction
-
點擊查看大圖
計量
- 文章訪問數: 252
- HTML全文瀏覽量: 80
- PDF下載量: 3
- 被引次數: 0
下載:
