Recovery of titanium dioxide from titanium-bearing solution by using ammonium as precipitant

ZHANG Yue; WANG Sijia; XUE Xiangxin

doi:10.3969/j.issn.0438-1157.2012.10.048

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Recovery of titanium dioxide from titanium-bearing solution by using ammonium as precipitant

更新时间：2025-12-10

- Recovery of titanium dioxide from titanium-bearing solution by using ammonium as precipitant
- CIESC Journal Issue 10, Pages: 3345-3349(2012)
- 作者机构：
  
  1. 东北大学材料与冶金学院,辽宁,沈阳,110819
  2. 沈阳化工研究院有限公司农药研究所,辽宁,沈阳,110021
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.10.048
  CLC： F111.3
- Online First：05 October 2012，
  
  Published：05 October 2012
- 稿件说明：
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ZHANG Yue, WANG Sijia, XUE Xiangxin. Recovery of titanium dioxide from titanium-bearing solution by using ammonium as precipitant[J]. CIESC Journal, 2012, (10): 3345-3349.
DOI：

ZHANG Yue, WANG Sijia, XUE Xiangxin. Recovery of titanium dioxide from titanium-bearing solution by using ammonium as precipitant[J]. CIESC Journal, 2012, (10): 3345-3349. DOI： 10.3969/j.issn.0438-1157.2012.10.048.

摘要

以含钛高炉渣为原料

经硫酸铵熔融法得到含钛滤液

然后以氨水为沉淀剂

控制pH值使钛水解

水解产物经600℃煅烧2 h得到二氧化钛。考察了螯合剂的加入量、溶液pH值和反应时间对钛沉淀率的影响

实验结果表明:反应过程中铁与钛发生共沉淀

造成二氧化钛产物中的铁含量过高。EDTA几乎完全抑制了铁的沉淀

明显降低了二氧化钛产物的全铁含量;2-羟基丙烷-1

3-三羧酸的加入降低了产物中二氧化硅的含量

提高了产物中二氧化钛的含量。当2-羟基丙烷-1

3-三羧酸与硅的摩尔比为1

EDTA与铁的摩尔比为3

pH值为2.0

反应时间为90 min时产物中二氧化钛的含量为96.35%。

Abstract

Extraction of titanium dioxide from titanium-bearing blast furnace slag was studied.Firstly

the titanium-bearing blast furnace slag reacted with ammonium sulfate to obtain NH3 and TiOSO4 solution

and then titanium dioxide was precipitated from TiOSO4 solution by using ammonium as precipitant. Finally

the filtered precipitate was calcined in a muffle furnace at 600℃ for 2 h.The effects of quantities of chelate reagent added

pH and holding time on the precipitation rate of titanium were investigated.The results showed that the precipitation rate of titanium

aluminum and iron increased with increasing solution pH since NH3 was used as precipitant and during this stage iron ion hydrolyzed to form Fe(OH)3.The hydrolysis of Fe3+ was restrained by EDTA addition into the solution.At the same time

the content of iron in production decreased and the content of TiO2 increased.The precipitation of silicon was restrained by citric acid(a novel additive)addition into the solution.At the same time

the content of silicon dioxide in production decreased and the content of TiO2 increased.The TiO2 content of the production increased with increasing EDTA/Fe3+ molar ratio.TiO2 with purity 96.35% was obtained when EDTA/Fe3+ molar ratio increased to 3

citric acid /Si molar ratio was 1

solution pH was 2.0 and holding time was 90 min.

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