钢铁钒钛2025，Vol.46Issue(6)：72-77,89,7.DOI:10.7513/j.issn.1004-7638.2025.06.008
超细粒级钛精矿酸解率提升研究
Study on enhancement of acidolysis rate in ultrafine-grade titanium concentrate
吴健春1
作者信息
- 1. 钒钛资源综合利用国家重点实验室,攀钢集团研究院有限公司,四川攀枝花 617000
- 折叠
摘要
Abstract
Utilizing ultrafine-grade titanium concentrate as the raw material,this study investigated the key factors influencing its acidolysis efficiency by comparative analysis of the differences in particle size distribution,chemical composition,and phase composition between ultrafine and conventional-grade concentrates.Acidolysis process optimization was subsequently conducted.The results indicate that the phase structure of the ultrafine-grade titanium concentrate shows no significant difference from the conventional-grade titanium concentrate,with ilmenite being the dominant phase in both.However,the ultrafine-grade titanium concentrate exhibits significantly higher carbon(C)and phosphorus(P)contents.Under the standard acidolysis conditions,the acidolysis rate of the ultrafine-grade titanium concentrate was 3-4 percentage points lower than that of the conventional-grade titanium concentrate.This reduction is primarily attributed to the higher dosage of flotation reagents used during the benefici-ation of the ultrafine material,which forms a dense film layer on the particle surfaces,significantly in-creasing the diffusion resistance of sulfuric acid into the particle interior.The study found that employ-ing chemical intensification measures,such as increasing the reaction acid-to-ore ratio and elevating the reaction acid concentration,effectively disrupts this flotation reagent film layer,thereby substantially enhancing the acidolysis rate.The optimized acidolysis conditions were determined as follows:reaction acid concentration of 85％-86％and acid-to-ore ratio of 1.56-1.58.Under these conditions,the acidolys-is rate of the ultrafine-grade concentrate reached up to 96％or higher.关键词
超细粒级钛精矿/酸解率/浮选药剂Key words
ultrafine-grade titanium concentrate/acidolysis rate/flotation agents分类
矿业与冶金引用本文复制引用
吴健春..超细粒级钛精矿酸解率提升研究[J].钢铁钒钛,2025,46(6):72-77,89,7.
