Process mineralogy analysis of waste residue from ilmenite by acid hydrolysis

被引：0

作者：

Li, Zongyun ^{[1
]}

Xu, Yanxia ^{[1
]}

Wang, Jin ^{[1
]}

Song, Xingfu ^{[1
]}

Yu, Jianguo ^{[1
]}

机构：

[1] National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai,200237, China

来源：

Huagong Xuebao/CIESC Journal | 2015年 / 66卷 / 05期

关键词：

Ilmenite - Atomic emission spectroscopy - Gravitation - Silica - Silicon oxides - Particle size analysis - Sulfur compounds - Waste treatment - Hematite - Particle size;

D O I：

10.11949/j.issn.0438-1157.20141658

中图分类号：

学科分类号：

摘要：

Comprehensive process mineralogy analysis of waste residue from incomplete reaction of titanium concentrate and sulfuric acid in sulfate process of titanium dioxide industry was made with Mastersizer 2000, XRD, XRF, ICP-AES, SEM-EDS, specific gravity method and screening, to provide guidance to recycling ilmenite. The residue had wet surface with about 45%(mass) soluble substance, including 4.06%(mass)Ti ion which could be hydrolyzed easily. The insoluble particles with various appearances contained 17.14%(mass) TiO2, 10.78% (mass) Fe2O3, and 46.94%(mass) SiO2. Its particle size distribution was between 1 μm and 100 μm. Its density was 3.21 g·cm-3. From screening, there were different particle sizes and densities between ilmenite and other impurities. Particles above 120 μm with average density about 3.4 g·cm-3 were mainly anhydrite. Particles between 18 μm and 75 μm with average density greater than 3.5 g·cm-3 were mainly ilmenite. Particles below 18 μm with average density about 2.9 g·cm-3 mainly contained silicon sludge, and became viscous and difficult to separate in water. © All rights reserved.

引用

页码：1947 / 1954

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