东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (12): 1724-1728.DOI: -

• 论著 • 上一篇    下一篇

利用硫酸铵焙烧工艺提取硼精矿中的硼

段华美;吕晓姝;宁志强;翟玉春;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家重点基础研究发展计划项目(2007CB613603);;

Boron extraction from boron-concentrate ore by ammonium sulfate roasting method

Duan, Hua-Mei (1); Lü, Xiao-Shu (1); Ning, Zhi-Qiang (1); Zhai, Yu-Chun (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Zhai, Y.-C.
  • About author:-
  • Supported by:
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摘要： 为了更加合理有效地利用硼精矿,以辽宁硼铁矿经磁选得到的硼精矿为原料,采用硫酸铵焙烧的方法处理得到熟料,将熟料加水溶出、固液分离得到含硼溶液和提硼渣,含硼溶液用于提取硼酸,提硼渣可用于提取SiO2和MgO.通过单因素实验考察了焙烧温度、焙烧时间、铵矿比对B2O3浸出率的影响.通过正交试验得到提取B2O3的适宜工艺条件为:焙烧温度400℃,焙烧时间90 min,铵矿比1.6,该条件下B2O3的浸出率可达85%以上.对原料及提硼渣进行化学成分和物相组成分析,结果表明本工艺可使大部分硼化物生成可溶物并被提取出来,可实现硼精矿的绿色综合利用.

关键词: 硼精矿, 硫酸铵, 焙烧, 硼铁矿, 硼酸

Abstract: In order to reasonably use the boron-concentrate ore from magnetic separation of Liaoning ludwigite, the raw samples were roasted with ammonium sulfate. Then the roasted materials were separated by filtration after being dissolved into water. The boron-rich solution was used to recover boron acid while the remaining residue was used as a raw material for SiO2 and MgO recovery. Single factor experiments were conducted to study the influences of roasting temperature, roasting time and ammonium/ore ratio on the leaching rate of B2O3. The reasonable conditions obtained by orthogonal test are: roasting temperature of 400°C, roasting time of 90min, and ammonium/ore ratio of 1.6. Under such conditions, the leaching rate of B2O3 is over 85%. The chemical composition analysis and XRD results show that, this method can extract the majority of soluble boron from boron-concentrate ore, and thereby realize the eco-friendly comprehensive utilization of boron-concentrate ore.

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