Extract of high-whiteness aluminum hydroxide from residues of novel process of magnesium production by aluminothermic reduction

DI Yuezhong; WANG Zhihui; WANG Yaowu; PENG Jianping; FENG Naixiang

doi:10.3969/j.issn.0438-1157.2013.03.045

您当前的位置：

首页 >

文章列表页 >

Extract of high-whiteness aluminum hydroxide from residues of novel process of magnesium production by aluminothermic reduction

更新时间：2025-12-10

- Extract of high-whiteness aluminum hydroxide from residues of novel process of magnesium production by aluminothermic reduction
- CIESC Journal Issue 3, Pages: 1106-1111(2013)
- 作者机构：
  
  东北大学材料与冶金学院,辽宁,沈阳,110819
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.03.045
  CLC： F111.3
- Online First：05 March 2013，
  
  Published：05 March 2013
- 稿件说明：
移动端阅览
DI Yuezhong, WANG Zhihui, WANG Yaowu, et al. Extract of high-whiteness aluminum hydroxide from residues of novel process of magnesium production by aluminothermic reduction[J]. CIESC Journal, 2013, (3): 1106-1111.
DOI：

DI Yuezhong, WANG Zhihui, WANG Yaowu, et al. Extract of high-whiteness aluminum hydroxide from residues of novel process of magnesium production by aluminothermic reduction[J]. CIESC Journal, 2013, (3): 1106-1111. DOI： 10.3969/j.issn.0438-1157.2013.03.045.

摘要

新法铝热炼镁工艺以白云石和菱镁石为原料、以铝粉为还原剂

在真空还原获得金属镁的同时得到富含CaO·2Al2O3的还原渣

该还原渣可通过氢氧化钠和碳酸钠的混合碱液溶出得到铝酸钠溶液

并通过碳酸化分解制备氢氧化铝。以该工艺所得还原渣为原料

系统地研究各溶出条件对氧化铝溶出率的影响

并对碳分所得氢氧化铝进行性能检测。结果表明

在氢氧化钠浓度80 g·L-1、碳碱浓度110 g·L-1、溶出时间120 min、溶出温度95℃、液固比为6的条件下

炼镁还原渣中氧化铝的溶出率在85%以上。氢氧化铝产品白度均大于98

平均粒径为26.98 μm

能够达到高白氢氧化铝的要求。

Abstract

The novel process producing magnesium metal using vacuum aluminothermic reduction

which utilizes dolomite and magnesite as raw materials and aluminum powder as reductant

produces reducing slag containing-rich CaO·2Al2O3.The reducing residue can be solved by a mixture solution of sodium hydroxide and sodium carbonate

and a solution of sodium aluminate is produced which can be decomposed by CO2 to obtain aluminum hydroxide.For the production process of aluminum hydroxide

effects of process parameters on leaching rate of alumina are investigated systematically and the performance of aluminum hydroxide obtained was detected.The results show that the alumina leaching rate from the residue is above 85% under the conditions of NaOH concentration 80 g·L-1

Na2CO3 concentration 110 g·L-1

leaching temperature 95℃

leaching time 120min and L/S 6.Whiteness of aluminum hydroxide obtained carbonation precipitation at 50℃ is over 98

and average particle size is 26.98μm.

关键词

Keywords

references

Views

426

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Alumina leaching properties of calcium sulphoaluminate

Extracting magnesium from ascharite by vacuum thermal reduction using calcium carbide as redutant

Thermodynamic performance of tower-type solar-assisted supercritical compression CO2 energy storage system

Identification of gas-liquid two-phase flow patterns in a riser based on recursive characteristics and CNN

Oxygen mass transfer performance of hollow fiber non-bubble aeration membrane based on gas/liquid-phase measurement method

Related Author

CHU Weiqin

ZHANG Xuezheng

MA Dongdong

SUN Huilan

WANG Bo

WANG Yaowu

PENG Jianping

LI Yinglong

Related Institution

School of Material Science and Engineering, Hebei Key Laboratory of Material Near-Net Forming Technology, Hebei University of Science and Technology

⁰