Influence of cooling methods on decalcification behavior of titanium slags

被引：0

作者：

He B.-L. ^{[1
,2
]}

Qiu G.-Z. ^{[1
]}

机构：

[1] School of Minerals Processing and Bioengineering, Central South University, Changsha

[2] LB Group Co., Ltd., Jiaozuo

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2023年 / 33卷 / 07期

关键词：

decalcification; leaching; rich-titanium material; titanium slag; water quenching;

D O I：

10.11817/j.ysxb.1004.0609.2023-43728

中图分类号：

学科分类号：

摘要：

Using the titanium slag prepared by electric furnace smelting of ilmenite in Panxi area as the object, based on the ternary phase diagram of CaO-MgO-SiO2, the mineral composition, microstructure and element distribution of the titanium slags cooled by different methods were systematically studied using X-ray fluorescence spectrometer, X-ray diffractometer and scanning electron microscope. The results show that MgO and TiO2 in titanium slag form titanium during natural cooling, and other impurity elements mainly form diopside (CaMgSi2O6) and magnesium and alusite (Ca2MgSi2O7). While, for the water quenched titanium slag, the overall dispersion of slag particles is relatively uniform, and silicon mainly exists in the form of calcium disilicate (CaSi2O5), combining with the glass for each other to form a complex, which is embedded and distributed with black titanium. Moreover, the decalcification efficiency of water quenched cooling titanium slag in the acid leaching process is significantly enhanced. After alkaline desilication, the decalcification rate is 94.26%, and the contents of CaO, SiO2, and TiO2 are 0.12%, 0.49% and 90.1%, respectively. © 2023 Central South University of Technology. All rights reserved.

引用

页码：2247 / 2256

页数：9

共 17 条

[1]

WU Xian, ZHANG Jian, Geographical distribution and characteristics of titanium resources in China, Titanium Industry Progress, 23, 6, (2006)

[2]

ZHANG Xiao-wei, ZHANG Wan-yi, TONG Ying, Et al., Current situation and utilization trend of global titanium resources[J], Conservation and Utilization of Mineral Resources, 39, 5, pp. 68-75, (2019)

[3]

LI Zheng, CHEN Cong-xi, GE Zhen-hua, Et al., Discussion on the development and utilization situation and resource security of titanium resources in China[J], Land and Resources Information, 10, (2020)

[4]

QIU G, GUO Y., Current situation and development trend of titanium metal industry in China[J], International Journal of Minerals, Metallurgy and Materials, 29, 4, (2022)

[5]

YE En-dong, WU Xuan, Research of the occurrence state of the main impurities in Panxi ilmenite[J], Iron Steel Vanadium Titanium, 38, 4, (2017)

[6]

DENG Guo-zhu, HUANG Bei-wei, WANG Xue-fei, Recent achievements in preparing technology of synthetic rutile, Iron Steel Vanadium Titanium, 25, 1, (2004)

[7]

DENG Guo-zhu, Titanium metallurgy, (2010)

[8]

LUO Jin-hua, LI Jun-han, SUN Ning, Et al., Study of technological mineralogy on electro-titanium slag in Panzhihua mining area, Journal of Mineralogy and Petrology, 36, 2, (2016)

[9]

WANG Yi-jie, XUE Ya-zhou, PAN Mao, Et al., Mineralogical characteristics of direct reduction titanium slag at Panzhihua, Journal of Central South University (Science and Technology), 50, 3, (2019)

[10]

LIU Juan, Development of study on preparation of Ti-rich raw materials for boiling chlorinated from Panzhihua titanium resources, China Nonferrous Metallurgy, 47, 6, (2018)

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