预处理方式对盐酸浸出钛铁矿制备人造金红石的影响  

Effect of pretreatment on preparation of artificial rutile from ilmenite by hydrochloric acid leaching

作　　者：俞小花[1] 朱炳桥 沈庆峰[1] 彭建蓉[2,3] 谢刚 田林[2,3] 李荣兴 Yu Xiaohua;Zhu Bingqiao;Shen Qingfeng;Peng Jianrong;Xie Gang;Tian Lin;Li Rongxing(College of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;Kunming Metallurgical Research Institue,Kunming 650031,China;State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resource,Kunming 650503,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]昆明冶金研究院,云南昆明650031 [3]共伴生有色金属资源加压湿法冶金技术国家重点实验室,云南昆明650503

出　　处：《轻金属》2020年第2期45-51,共7页Light Metals

基　　金：国家自然科学基金面上项目(51374118);共伴生有色金属资源加压湿法冶金技术国家重点实验室开放基金(yy2016002)。

摘　　要：本文以钛铁矿精矿为原料,采用盐酸浸出制备人造金红石,首先采用Factsage 6.0热力学软件绘制了相关组分的φ-pH图,研究了盐酸浸出制备人造金红石的热力学基础;而后研究了还原焙烧和弱氧化焙烧两种预处理方式对人造金红石品位、粉化率等的影响。结果表明:在盐酸加压浸出体系中,钛铁矿中的FeO、Fe2O3、CaO和MgO均能溶解在溶液中,而SiO2和TiO2则留在固相中;还原焙烧和弱氧化焙烧预处理有利于提高产品TiO2的品位,其中弱氧化焙烧还可降低产品的粉化率。In this paper,the ilmenite concentrate was used as raw materials,from which the artificial rutile was prepared by hydrochloric acid leaching.Firstly,theφ-pH disgram of relevant components was prepared with Factsage 6.0 thermodynamic software,and the thermodynamic basis for the preparation of artificial rutile by hydrochloric acid leaching was studied.Secondly,the grade and powdering rate of artificial rutile were studied by different pretreatment methods such as reduction roasting and weak oxidation roasting.The results show that FeO,Fe2O3,CaO and MgO can be dissolved in the hydrochloric acid leaching system,while SiO2 and TiO2 remain in solid phase.Reduction roasting and weak oxidation roasting pretreatment can improve the grade of artificial rutile,and weak oxidation roasting can also reduce the powdering rate of product.

关 键 词：钛铁矿 人造金红石 还原焙烧 弱氧化焙烧 

分 类 号：TF823[冶金工程—有色金属冶金]