东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (10): 1455-1458.DOI: -

• 论著 • 上一篇    下一篇

硅铝合金真空热法还原硼镁石矿实验研究

徐冬;163.com;张显鹏;李杰;程恩庆;   

  1. 东北大学材料与冶金学院;辽宁省镁资源保护办公室;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2008-10-15 发布日期:2013-06-22
  • 通讯作者: Xu, D.
  • 作者简介:-
  • 基金资助:
    国家重点基础研究发展计划项目(2007CB613603)

Experimental investigation on vacuum-thermal reduction of ascharite with silicon-aluminum alloy as reductant

Xu, Dong (1); Zhang, Xian-Peng (1); Li, Jie (1); Cheng, En-Qing (2)   

  1. (1) School of Material and Metallurgy, Northeastern University, Shenyang 110004, China; (2) Office of Liaoning Magnesium Resources Protection, Shenyang 110001, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2008-10-15 Published:2013-06-22
  • Contact: Xu, D.
  • About author:-
  • Supported by:
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摘要： 为了解决低品位硼镁石矿的合理利用问题,首次以硅铝合金为还原剂,应用真空热法还原原理将煅烧后矿石中的游离氧化镁还原为金属镁.正交实验结果表明,最佳还原条件为:还原温度1 453 K、还原时间2.0 h、制团压力35 MPa、还原剂过量系数10%,该条件下镁的还原率可达到63.7%.得到的还原余料可用做生产无碱玻璃球的原料.该工艺对环境无污染,为硼镁石矿的综合利用开辟了一条新途径.

关键词: 硼镁石矿, 正交实验, 真空热法还原, 硅铝合金, 无碱玻璃球

Abstract: In order to utilize effectively the ascharite mineral which contain low grade B2O3, the vacuum-thermal reduction of roasted ascharite to deoxygenize magnesia into magnesium with silicon-aluminum alloy as reductant was experimentally investigated. The orthogonal test results showed that the best conditions for the reduction process are at 1453 K for 2 h, with briquetting pressure 35 MPa and excess coefficient reductant of 10% and, as a result, the ratio of reduction is up to 63.7%. In addition, the residue of the reduction process could be used as raw materials to make non-alkali glass ball. The reduction process is environment friendly, thus finding out a new way to utilize comprehensively ascharite mineral.

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