PROCESSING 0F ASCHARITE-MAGNETITE SYNGENETIC MINERAL BY SULFURIC ACID(Ⅱ)──PHASE DIAGRAMS OF H_3BO_3-MgSO_4-MgCl_2-H_2O SYSTEM AT 25℃ AND 100℃ AND THEIR APPLICATION

Cao Jilin; Zhao Bet; Liu Shuqin; Zhang Mingjiu; Lu Bingling（School of Chemical Engineering

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PROCESSING 0F ASCHARITE-MAGNETITE SYNGENETIC MINERAL BY SULFURIC ACID(Ⅱ)──PHASE DIAGRAMS OF H_3BO_3-MgSO_4-MgCl_2-H_2O SYSTEM AT 25℃ AND 100℃ AND THEIR APPLICATION

更新时间：2025-12-16

- PROCESSING 0F ASCHARITE-MAGNETITE SYNGENETIC MINERAL BY SULFURIC ACID(Ⅱ)──PHASE DIAGRAMS OF H_3BO_3-MgSO_4-MgCl_2-H_2O SYSTEM AT 25℃ AND 100℃ AND THEIR APPLICATION
- CIESC Journal Issue 4, (1996)
- 作者机构：
  
  大连理工大学化工学院!大连116012,大连理工大学化工学院!大连116012,大连理工大学化工学院!大连116012,大连理工大学化工学院!大连116012,大连理工大学化工学院,大连,116012
- 作者简介：
- 基金信息：
- DOI：
  CLC： F52
- Online First：25 August 1996，
  
  Published：25 August 1996
- 稿件说明：
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Cao Jilin, Zhao Bet, Liu Shuqin, et al. PROCESSING 0F ASCHARITE-MAGNETITE SYNGENETIC MINERAL BY SULFURIC ACID(Ⅱ)──PHASE DIAGRAMS OF H_3BO_3-MgSO_4-MgCl_2-H_2O SYSTEM AT 25℃ AND 100℃ AND THEIR APPLICATION[J]. CIESC Journal, 1996, (4).
DOI：

Cao Jilin, Zhao Bet, Liu Shuqin, et al. PROCESSING 0F ASCHARITE-MAGNETITE SYNGENETIC MINERAL BY SULFURIC ACID(Ⅱ)──PHASE DIAGRAMS OF H_3BO_3-MgSO_4-MgCl_2-H_2O SYSTEM AT 25℃ AND 100℃ AND THEIR APPLICATION[J]. CIESC Journal, 1996, (4). DOI：

摘要

测定了25℃、100℃H_3BO_3-MgSO_4-MgCl_2-H_2O体系的溶解度并绘成相图.根据相图，H_3BO_3-MgSO_4溶液可以MgCl_2为盐析剂，在100℃下蒸发析出一水硫酸镁，其母液冷至25℃析出H_3BO_3，硼酸母液循环用作盐析剂，使H_3BO_3和MgSO_4完全分离．文中并讨论了MgCl_2的最适用量.

Abstract

The solubilites of H3BO3-MgSO4-MgC12-H2O systems at 25°and 100℃ determined and the phase diagrams are plotted.On the basis of these diagrams

in evaporation of the aqueous solution of H3BO3-MgSO4

with MgC12 as salting out agent

MgSO4·H2O can be precipitated.On cooling down the MgSO4 mother liquor

boric acid can be crystallized out.The H3BO3 mother liquor can be recycled and used as salting out sgent againn

thus H3BO3 and MgSO4 can be throughly separated.In this paper

the optimum concentration of MgCl2 is also discussed.

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