电石渣硅铁用作重介质悬浮液加重质的研究

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (4): 1362-1368.

电石渣硅铁用作重介质悬浮液加重质的研究

王兴文, 张子轩, 赵云良, 温通, 吴慧娟, 宋少先

武汉理工大学资源与环境工程学院,武汉 430070

收稿日期:2021-11-23 修回日期:2022-01-06 出版日期:2022-04-15 发布日期:2022-04-27
通讯作者: 赵云良,博士,教授。E-mail:zyl286@whut.edu.cn
作者简介:王兴文(1998—),男,硕士研究生。主要从事固废资源化利用方面的研究。E-mail:wang_xw98@163.com
基金资助:
国家重点研发计划(2018YFC1901502)

Research on Ferrosilicon from Carbide Slag as Medium Solids in Heavy Medium Suspension

WANG Xingwen, ZHANG Zixuan, ZHAO Yunliang, WEN Tong, WU Huijuan, SONG Shaoxian

School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China

Received:2021-11-23 Revised:2022-01-06 Online:2022-04-15 Published:2022-04-27

摘要/Abstract

摘要： 电石渣的排放及贮存量日益递增,电石渣硅铁的资源化利用也成为亟待解决的难题。为实现电石渣硅铁的高值化应用,以干法电石渣中分离出的磁性硅铁为加重质配制重介质悬浮液,并探究了悬浮液密度、黏土含量和硅铁粒度等因素对其粘度及沉降特性的影响。结果表明,增大悬浮液密度或黏土用量以及减小硅铁粒度均会使悬浮液的粘度提高,从而使加重质颗粒的沉降速度下降,稳定性得到提升。此外,为了进一步验证该悬浮液体系用于实际分选的可行性,将不同密度的悬浮液用于选煤浮沉试验分选混合煤样,在密度为1.30 g/cm³和1.40 g/cm³的重介质悬浮液中,浮煤产率高且灰分含量较初始煤样大幅降低,说明该悬浮液体系具有良好的分选性能。

关键词: 电石渣硅铁, 高值利用, 黏土, 重介质悬浮液, 粘度, 分选性能

Abstract: The discharge and storage of carbide slag are increasing year by year, so the utilization of ferrosilicon derived from carbide slag has also become a problem to be solved urgently. For the high-value application of carbide slag ferrosilicon, the heavy medium suspension was prepared using magnetic ferrosilicon separated from dry-process carbide slag, and the effects of suspension density, clay content and ferrosilicon particle size on viscosity and sedimentation characteristics of suspensions were studied. The results show that increasing suspension density or clay dosage and reduces ferrosilicon size increases the viscosity of suspension to reduce the sedimentation velocity of medium solids, and the stability of the suspension is improved. Furthermore, in order to verify the feasibility of using this suspension system for practical separation, the suspensions with different densities are tested in float and sink experiments to separate coal samples. Under the suspension density of 1.30 g/cm³ or 1.40 g/cm³, the floating coal reveal relatively high yield and its ash content significantly decrease compared to initial coal sample, which reflect the great separation performance of this suspension system.

Key words: carbide slag ferrosilicon, high-value application, clay, heavy medium suspension, viscosity, separation performance

中图分类号:

TD94

王兴文, 张子轩, 赵云良, 温通, 吴慧娟, 宋少先. 电石渣硅铁用作重介质悬浮液加重质的研究[J]. 硅酸盐通报, 2022, 41(4): 1362-1368.

WANG Xingwen, ZHANG Zixuan, ZHAO Yunliang, WEN Tong, WU Huijuan, SONG Shaoxian. Research on Ferrosilicon from Carbide Slag as Medium Solids in Heavy Medium Suspension[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(4): 1362-1368.

参考文献

[1] 赵立文,朱干宇,李少鹏,等.电石渣特性及综合利用研究进展[J].洁净煤技术,2021,27(3):13-26.
ZHAO L W, ZHU G Y, LI S P, et al. Research progress on characteristics and comprehensive utilization of calcium carbide slag[J]. Clean Coal Technology, 2021, 27(3): 13-26 (in Chinese).
[2] 赵永禄,何贇彪,王振方.自动化分离及离心重选机筛分回收电石渣中矽铁技术研究[J].中国氯碱,2016(12):22-23.
ZHAO Y L, HE Y B, WANG Z F. Automation separation and centrifugal separator screening in the recovery of carbide slag silicon iron technology research[J]. China Chlor-Alkali, 2016(12): 22-23 (in Chinese).
[3] 田之文,周宏建,崔冬梅,等.电石渣中硅铁对水泥生产的影响[J].新世纪水泥导报,2009,15(6):26-27+5.
TIAN Z W, ZHOU H J, CUI D M, et al. Influence of ferro-silicon within carbide slag on cement production[J]. Cement Guide for New Epoch, 2009, 15(6): 26-27+5 (in Chinese).
[4] 陈进,曹嘉欣,易大伟,等.磁铁矿粉性质对重介质悬浮液稳定性的影响分析[J].煤炭加工与综合利用,2019(3):7-10+8.
CHEN J, CAO J X, YI D W, et al. Analysis of the influence of magnetite properties on the stability of heavy medium suspension[J]. Coal Processing & Comprehensive Utilization, 2019(3): 7-10+8 (in Chinese).
[5] 刘小军.空气重介质流化床干法选煤加重质的研究现状[J].煤炭加工与综合利用,2016(11):26-28.
LIU X J. Research status of heavy medium for dry coal separation in air dense medium fluidized bed[J]. Coal Processing & Comprehensive Utilization, 2016(11): 26-28 (in Chinese).
[6] 李海涛.选煤用磁铁矿粉检验初探[J].煤质技术,2011(6):10-12.
LI H T. The study on test of magnetite powder for coal preparation[J]. Coal Quality Technology, 2011(6): 10-12 (in Chinese).
[7] 殷佳琪,徐安邦,张汉泉.提高细磨人工磁铁矿弱磁选回收率研究[J].中国矿业,2016,25(10):133-136.
YIN J Q, XU A B, ZHANG H Q. Improving the recovery rate of weak magnetic separation of fine grinding artificial magnetite ore[J]. China Mining Magazine, 2016, 25(10): 133-136 (in Chinese).
[8] 韦鲁滨,孟丽诚,程相锋,等.重介质悬浮液流变特性研究[J].煤炭学报,2016,41(4):992-996.
WEI L B, MENG L C, CHENG X F, et al. Research on rheological properties of dense-medium suspension[J]. Journal of China Coal Society, 2016, 41(4): 992-996 (in Chinese).
[9] 张子佳,夏令,宋少先.硅铁的冶炼技术与应用进展[J].现代矿业,2020,36(4):102-105+109.
ZHANG Z J, XIA L, SONG S X. Progress in smelting technology and application of ferrosilicon[J]. Modern Mining, 2020, 36(4): 102-105+109 (in Chinese).
[10] REN X M, MA B Y, SU C, et al. In-situ synthesis of Fe_xSi_y phases and their effects on the properties of SiC porous ceramics[J]. Journal of Alloys and Compounds, 2019, 784: 1113-1122.
[11] 上官志鹏.重介质选煤悬浮液密度和黏度的协调控制[D].西安:西安科技大学,2019.
SHANGGUAN Z P. Coordinated control of suspension density and viscosity in the dense medium coal preparation[D]. Xi'an: Xi'an University of Science and Technology, 2019 (in Chinese).
[12] 段福山.重介质悬浮液稳定性的探讨[J].选煤技术,2012(6):104-106.
DUAN F S. Research on stability of heavy medium suspension[J]. Coal Preparation Technology, 2012(6): 104-106 (in Chinese).
[13] 白皓宇,赵云良,王伟,等.蒙脱石剥离二维纳米片及其功能化应用[J].矿产保护与利用,2019,39(6):101-111.
BAI H Y, ZHAO Y L, WANG W, et al. Exfoliating preparation of two-dimensional montmorillonite nanosheet and the functional applications[J]. Conservation and Utilization of Mineral Resources, 2019, 39(6): 101-111 (in Chinese).
[14] 王伟,孙华峰,李海军.分选硫铁矿用高密度重介悬浮液特性的分析研究[J].选煤技术,2018(6):42-45+50.
WANG W, SUN H F, LI H J. Analytical study on characteristics of high-density heavy medium suspension for separation of pyrite[J]. Coal Preparation Technology, 2018(6): 42-45+50 (in Chinese).
[15] 张睿.浓密旋流器对重介悬浮液性质的优化研究[D].徐州:中国矿业大学,2016.
ZHANG R. The optimization of dense medium suspension properties from thickening cyclone[D]. Xuzhou: China University of Mining and Technology, 2016 (in Chinese).
[16] 马秀文.悬浮液组成对细粒煤重介分选影响研究[D].徐州:中国矿业大学,2016.
MA X W. The influence of suspension composition on heavy medium cyclone for fine coal saparation[D]. Xuzhou: China University of Mining and Technology, 2016 (in Chinese).
[17] 孟进.重介悬浮液性质对煤泥分选效果的影响[J].煤炭与化工,2020,43(2):117-120.
MENG J. Effect of dense medium suspension properties on coal slime separation[J]. Coal and Chemical Industry, 2020, 43(2): 117-120 (in Chinese).