利用铬铁合金生产铬盐的新工艺研究

doi:10.19964/j.issn.1006-4990.2020-0377

Abstract

Abstract:

In view of the pollution problem of hexavalent chromium existing in the production of chromium salt at present,the new ferrochrome-trivalent chromic ion metallurgical-chemical combination method without hexavalent chromium pollution was introduced.In the new process,ferrochrome alloy was used as raw material and sulfuric acid was employed as leaching agent,the purified chromium sulphate solution was obtained after removing impurities with sulfide,precipitating iron with ox-alate and extraction,chromium oxide could be prepared with the purified chromium sulphate solution after precipitation of chromium hydroxide and calcination of chromium hydroxide.The chromium element existed with the form of Cr(Ⅲ) in the whole new process and the pollution problem caused by hexavalent chromium ion was completely resolved.The comprehensive uti-lization of resources could be realized in the new process.The iron associated with chromium in the ferrochrome alloy after leaching with sulfuric acid and removing impurities could be precipitated as ferrous oxalate with oxalate,ferrous oxalate was used as the raw material of preparation of lithium iron phosphate,the comprehensive utilization of resources and good econo-mic benefits could be achieved.The leaching rate of chromium could reach 99%,the purity of chromium oxide could be over 99% with good particle size distribution,chromium oxide could be used in the paint industry and metallurgy industry.The new process is simple and easy to realize industrialization.

Key words: chromium sulfate, ferrochrome alloy, extraction, chromium oxide, chromic salt

CLC Number:

TG146.1

Liu Jijun,Lin Hongmei,Hu Guorong,Peng Zhongdong. Study on new process of producing chromium salt with ferrochrome alloy[J]. Inorganic Chemicals Industry, 2021, 53(6): 156-159.

Figures/Tables 8

Table 1

Fig.1

Table 2

Table 3

Table 4

Table 5

Table 6

Fig.2

References 14

[1]	成思危, 丁翼, 杨春荣. 铬盐生产工艺[M]. 北京: 化学工业出版社, 1988.
[2]	丁翼. 中国铬盐生产状况与展望[J]. 化工进展, 2004,23(4):345-348.
[3]	天津化工研究院. 无机盐工业手册[M].2版. 北京: 化学工业出版社, 1996.
[4]	Sully A H. Metallurgy of the rarer metals,chromium[M]. London:Butterworths Scientific Publication, 1954.
[5]	张大威, 李霞, 纪柱. 铬铁矿无钙焙烧工艺参数控制研究[J]. 无机盐工业, 2012,44(6):37-39.
[6]	陈宁, 董明甫, 黄玉西, 等. 铬盐产业绿色发展现状及展望[J]. 无机盐工业, 2018,50(10):10-13.
[7]	纪柱. 开发实施中的中国铬酸钠新工艺(Ⅰ)[J]. 无机盐工业, 2010,42(1):1-4.
[8]	吴俊, 秦险峰, 全学军, 等. 铬铁矿无钙焙烧渣中铬盐水洗回收及还原解毒工艺研究[J]. 无机盐工业, 2019,51(2):56-61.
[9]	吴慎初. 用铬铁生产金属铬(铬盐)新工艺研究[J]. 铁合金, 1995(4):35-38.
[10]	史培阳, 刘素兰. 铬铁矿硫酸浸出试验研究[J]. 中国稀土学报, 2002,20(专辑):472-474.
[11]	胡国荣, 李国, 邓新荣, 等. 针铁矿法从铬铁合金硫酸浸出液中除铁[J]. 湿法冶金, 2006,25(4):198-200.
[12]	陈建, 王友承, 杨虎. 回收铬饼制备碱式硫酸铬的除铁工艺研究[J]. 化学工程师, 2009,171(11):60-71.
[13]	邬建辉, 阳伦庄, 湛菁, 等. 铬铁合金中的铬、铁分离研究[J]. 湿法冶金, 2011,30(1):51-55.
[14]	潘庆辉, 刘厚凡. 硫酸介质中P507萃取Fe³⁺的实验研究[J]. 江西化工, 2010,30(1):86-89.

元素	质量分数/%	元素	质量分数/%
Cr	60.6	Si	0.242 1
Fe	27.9	Mg	0.115 2
Mn	2.9	其他	7.992
Ni	0.111 9	总计	100
Co	0.139 2

主要成分	质量浓度/（g·L^-1）	主要成分	质量浓度/（g·L^-1）
Cr	55.311	Co	0.078 9
Fe	25.195	Mn	0.714 8
Ni	0.259

硫化物	K_SP	硫化物	K_SP
NiS（α）	2.8×10^-21	FeS	4.9×10^-18
CoS（α）	1.8×10^-22	PbS	9.3×10^-28
MnS	2.8×10^-13

主要成分	质量浓度/（g·L^-1）	主要成分	质量浓度/（g·L^-1）
Cr	42.86	Co	0.005 3
Fe	16.884	Mn	0.503 8
Ni	0.003 5

主要成分	质量分数/%	主要成分	质量分数/%
Fe	29.5	Co	0.000 63
Mn	0.116 7	Cr	0.010 22
Ni	0.001 46

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on new process of producing chromium salt with ferrochrome alloy

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 8

References 14

Related Articles 15

Metrics

Comments

Recommended 0

[1]	PEI Hongchang, YUE Maowen, LIU Jianlu, LI Zhongfang, CHEN Xiaoyu. Research progress of comprehensive development and efficient utilization of seawater [J]. Inorganic Chemicals Industry, 2024, 56(2): 21-29.
[2]	CHEN Haixia, YAN Hong, SUN Yunlong, MA Guoqiang. Research progress of lithium resource extraction technology [J]. Inorganic Chemicals Industry, 2024, 56(1): 9-22.
[3]	FU Yu, DENG Mi, HUANG Donggen, WAN Jinbao. Research progress of lithium extraction technology from salt lake brine [J]. Inorganic Chemicals Industry, 2023, 55(9): 9-16.
[4]	LU Nana, QIN Yaru, MA Shuqing, WANG Qihui, LIU Bing, SHI Chenglong. Study on extraction of lithium from simulated old brine of salt lake by pyridine ionic liquid system [J]. Inorganic Chemicals Industry, 2023, 55(7): 45-50.
[5]	LU Junhao. Study on full element recycling process of retired ternary power lithium battery [J]. Inorganic Chemicals Industry, 2023, 55(6): 92-103.
[6]	ZHOU Qinglie, WANG Baoqi, ZHANG Zhiye, ZHANG Yinghu, WANG Jian, YANG Lin. Development of new process of removing metal cations from wet-process phosphoric acid by extraction [J]. Inorganic Chemicals Industry, 2023, 55(3): 84-91.
[7]	ZHU Ruisong, CAO Jing, LIU Taoran, LI Yingwen, GAO Fei, HU Xuesheng. Research progress of lithium extraction technology and industrialization of unconventional brines in global [J]. Inorganic Chemicals Industry, 2023, 55(11): 1-11.
[8]	HU Yue, MO Hengliang, LI Tianyu, PENG Wenjuan, SUN Guangdong, XIAO Hongkang, CHEN Yili, LI Suoding, TANG Yang. Study on spinning molding and performance of Ti-based lithium ion sieve powder and PVDF resin [J]. Inorganic Chemicals Industry, 2023, 55(11): 58-63.
[9]	HU Guangshou, LI Huping, ZHOU Wanchun, LI Xiangdong, MA Xuhua. Study on origin of tetravalent cerium in extraction and separation of rare earth [J]. Inorganic Chemicals Industry, 2023, 55(11): 64-69.
[10]	JI Ying, ZHANG Ying, HOU Xuechao, ZHU Xiaofeng, JIANG Run, PENG Wenjuan, SUN Guangdong, LÜ Long. Application research of titanium adsorbent of carbonate-type salt lake in Tibet [J]. Inorganic Chemicals Industry, 2023, 55(11): 70-77.
[11]	LAI Xianrong, CHEN Zhouqin, SUN Hao, YANG Chao. Pilot study on lithium extraction by adsorption from raw brine of magnesium sulfate subtype salt lakes in Tibet [J]. Inorganic Chemicals Industry, 2023, 55(11): 86-92.
[12]	ZHANG Zhiqiang, CUI Kangping, CHEN Xing, LI Haiyang. Optimization of preparation of ultrafine chromium oxide by carbothermal reduction of sodium dichromate by response surface methodology [J]. Inorganic Chemicals Industry, 2023, 55(10): 136-144.
[13]	XU Enhao, WU Kaipeng. Research progress of preparation and application of nano-sized chromium oxide [J]. Inorganic Chemicals Industry, 2023, 55(10): 24-34.
[14]	LI Huifang, WANG Xiao, BAI Youpeng, ZHANG Shixiang. Study on extraction of lithium from low grade high clay leaching solution by solvent extraction [J]. Inorganic Chemicals Industry, 2023, 55(10): 63-69.
[15]	LIN Yuqing,ZHANG Yiren,QIU Yulong,ZHANG Jiayu,YU Jianguo. Progress and prospect of membrane technology in lithium extraction from salt lake brine [J]. Inorganic Chemicals Industry, 2023, 55(1): 33-45.