紅土鎳礦含碳團塊直接還原生產鎳鐵粒工藝

黃冬華; 張建良; 林重春; 毛瑞

doi:10.13374/j.issn1001-053x.2011.12.015

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紅土鎳礦含碳團塊直接還原生產鎳鐵粒工藝

doi: 10.13374/j.issn1001-053x.2011.12.015

黃冬華^1,2, ,,
張建良¹,
林重春¹,
毛瑞¹

1. 北京科技大學冶金與生態工程學院, 北京 100083;
2. 北京科技大學期刊中心, 北京 100083

詳細信息

通訊作者:
黃冬華,E-mail:huangdh@ustb.edu.cn

中圖分類號: TF556
計量
- 文章訪問數: 141
- HTML全文瀏覽量: 29
- PDF下載量: 10
- 被引次數: 0
出版歷程
- 收稿日期: 2011-04-12
- 網絡出版日期: 2021-07-30

Production of ferro-nickel granules from nickel laterite ore/coal composite briquettes by direct reduction

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Journals Publishing Center, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 以紅土鎳礦和煤粉復合團塊為原料,利用高溫直接還原制備鎳鐵粒.討論了焙燒溫度、焙燒時間、C/O摩爾比和熔劑加入量對鎳、鐵品位和回收率以及對鎳鐵粒質量的影響.當焙燒溫度為1350℃、C/O=1.4、焙燒時間為60 min以及石灰石加入量為20%時,鎳、全鐵品位分別為9.4%和87.5%,鎳、鐵回收率分別為96.6%和97.9%.X射線衍射、掃描電鏡及能譜分析表明,鎳鐵粒中鎳、鐵基本以合金態存在,碳基本固溶在合金中.
- 紅土鎳礦 /
- 直接還原 /
- 鐵 /
- 鎳
Abstract: Ferro-nickel granules were produced from nickel laterite ore/coal composite briquettes by high-temperature direct reduction.The effects of roasting temperature,roasting time,C/O(carbon/oxygen) molar ratio and flux amount on the grades and recovery rates of nickel and iron as well as on the quality of ferro-nickel granules were studied.The grades of nickel and total iron in the granules are 9.4% and 87.5% and the recovery rates of nickel and iron are 96.6% and 97.9%,respectively,when the roasting temperature is 1350℃,the C/O molar ratio is 1.4,the roasting time is 60min,and the limestone amount is 20%.The ferro-nickel granules were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM) equipped with an energy dispersive spectrometer(EDS).The results show that nickel and iron basically exist in alloy state,and carbon is solid-soluted in the alloy.
- nickel laterite /
- direct reduction /
- iron /
- nickel