本文選題：高磷鮞狀赤鐵礦　切入點(diǎn)：深度還原　出處：《金屬礦山》2017年02期 　論文類型：期刊論文

【摘要】：湖北某高磷鮞狀赤鐵礦石鐵品位為42.21%、磷含量為1.31%;鐵主要以赤鐵礦形式存在,磷主要以磷灰石形式存在。為考察深度還原過程中磷的遷移行為,對該礦石進(jìn)行了深度還原—弱磁選試驗(yàn)。結(jié)果表明:升高還原溫度、延長還原時(shí)間或增大碳氧摩爾比均有利于磷向金屬鐵相富集。在還原溫度1 548 K、碳氧摩爾比2.5和還原時(shí)間60 min的條件下進(jìn)行還原,獲得的還原產(chǎn)品磨細(xì)至-0.074 mm占84%,在磁場強(qiáng)度為107 k A/m的條件下弱磁選后,可得到磷品位2.49%、回收率77.07%的高磷金屬相。金屬相SEM及EDS能譜分析結(jié)果表明:金屬相中部分區(qū)域的磷以P-Fe固溶體的形式存在,部分區(qū)域的磷以Fe_xP和P-Fe固溶體的形式共存。
[Abstract]:The iron grade of a high phosphorous oolitic hematite in Hubei province is 42.21 and the phosphorus content is 1.31. Iron mainly exists in the form of hematite and phosphorus mainly in the form of apatite. A deep reduction-weak magnetic separation test has been carried out on the ore. The results show that the reduction temperature is increased, Prolonging the reduction time or increasing the molar ratio of carbon to oxygen are beneficial to the enrichment of phosphorus to iron. The reduction temperature is 1 548 K, the molar ratio of carbon to oxygen is 2 5 and the reduction time is 60 min. The reduced product was milled to -0.074 mm (84 / 84) after weak magnetic separation with a magnetic field intensity of 107 Ka / m. The results of SEM and EDS energy spectrum analysis show that the phosphorus in some regions of the metal phase exists as P-Fe solid solution, and the phosphorus in some regions coexists in the form of Fe_xP and P-Fe solid solution.
【作者單位】： 東北大學(xué)資源與土木工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(51134002)
【分類號】：TD951

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 吳衛(wèi)江;方克明;韓其勇;;用放射性同位素示蹤法測定稀土在金屬相中的量[J];化學(xué)通報(bào);1982年04期

2 方克明,吳衛(wèi)江,李寶山,馮宏俊,鄒棣華;16MnRE鋼金屬相中稀土含量的測定[J];稀土;1984年01期

3 查全性;;金屬，

本文編號：1622560