东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (12): 1745-1749.DOI: -

• 论著 • 上一篇    下一篇

非直接接触式金属热还原制备金属钛的酸洗分离

郑海燕;谷健;王治卿;沈峰满;   

  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:
    国家自然科学基金资助项目(50804007,51074040);;

Effects of pickling on purification of titanium prepared by metallothermic reduction with an indirect contact method

Zheng, Hai-Yan (1); Gu, Jian (1); Wang, Zhi-Qing (1); Shen, Feng-Man (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: Zheng, H.-Y.
  • About author:-
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摘要： 主要探讨酸洗条件对非直接接触式金属热还原后产物中杂质的洗除效果.研究表明,采用醋酸盐酸联合酸洗方案可去除金属热还原产物中的杂质(CaO,Ca,CaTiO3),达到提纯金属Ti的目的;Ti不与醋酸反应,但能溶于浓盐酸,故盐酸酸洗时间不能过长,否则金属Ti溶解,造成Ti损失,影响Ti收得率;酸洗过程中酸体积浓度越大,酸洗时间越长,金属Ti的纯度越高.综合考虑酸耗、酸洗效率和Ti的溶损等因素,采用体积浓度50%醋酸酸洗6 h和体积浓度20%盐酸酸洗0.5 h的联合酸洗方案效果最好.

关键词: 钛冶炼, 非直接接触式, 金属热还原, 冷压块, 酸洗分离

Abstract: The influences of pickling conditions on the purification effect of the titanium product from indirect-contact metallothermic reduction were investigated. The experiment results show that it is feasible to remove oxides and impurity elements from metallothermic reduction product by acid pickling for producing high-purity titanium. Titanium doesn't react with acetic acid, but dissolves in hydrochloric acid slowly, and thus the pickling time should not be too long. Otherwise the titanium loss due to dissolution will lead to decrease of its yield. With the increase of acid concentration and pickling time, the purity of metallic titanium increases. Considering the purity and the yield of titanium, the optimum pickling conditions are determined as the combination of 50% volume concentration acetic acid for 6 h and 20% volume concentration hydrochloric acid for 0.5 h.

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