In our country, a lot of chromium-bearing vanadium slag was produced in metallurgy and phosphorous chemical industries. The utilization of these resources to recover vanadium and chromium is not only a way to prepare high-value vanadium production, but also an efficient method to resolve the environmental pollution issue. For the best separation of vanadium(V) and chromium(IV), primary amine N1923 was used to extract V(V) selectively from V(V) and Cr(IV) aqueous solution with various concentrations ratios under different initial pH values. Besides, the interact between V(V) and Cr(IV) was investigated though comparing their extraction rate in complex solution and single solution respectively. The results indicated that their extraction rates both increased with the decrease of initial pH value in solution and primary amine N1923 created great selectivity on the separation of V(V) and Cr(IV). The higher Cr(IV) concentration was, the lower initial pH values was needed for the best separation efficiency. The extraction rate of V(V) in complex solution was higher than that in its single solution, but that of Cr(IV) was just on the contrary. Affected by V(V), the extraction rate of Cr(IV) in complex solution went up and then went down with time going. That was because Cr(IV) reach equilibrium pH value ahead of V(V) and part of Cr(IV) in organic phase could be reversed by V(V), where the competition mechanisms in separation of V(V) and Cr(IV) with extraction method was discussed that the combination abilities of the two metal with hydrogen ion and primary amine molecule were different. As a theory favour, the revelation of competition mechanisms in extraction makes great contribution to the separation of V(V) and Cr(IV), while this paper would guide the resourceful recovery of vanadium and chromium from waste slag in metallurgical industry and make great benefits in economy, environment and society.
Ying SUN Pengge NING Hongbin CAO Wenzhao LIU
. Competition mechanisms in separation of vanadium and chromium with extraction method[J]. The Chinese Journal of Process Engineering, 2018
, 18(5)
: 989
-995
.
DOI: 10.12034/j.issn.1009-606X.217427
[1] MOSKALYK R R, ALFANTAZI A M. Processing of vanadium: a review [J]. Minerals Engineering, 2003, 16(9): 793-805.
[2] ERDEN M A, GUNDUZ S, KARABULUT H, et al. Effect of vanadium addition on the microstructure and mechanical properties of low carbon micro-alloyed powder metallurgy steels [J]. Materials Testing, 2016, 58(5): 433-437.
[3] YAN Y, LI B, GUO W, et al. Vanadium based materials as electrode materials for high performance supercapacitors [J]. Journal of Power Sources, 2016, 329(148-169.
[4] 张冬清, 李运刚, 张颖异. 国内外钒钛资源及其利用研究现状 [J]. 四川有色金属, 2011, 02):
ZHANG D Q, LI Y G, ZHANG Y Y. The current research situation of vanadium and titanium resources and its utilization at home and abroad [J]. Sichuan Nonferrous Metals, 2011, 02):
[5] DOMINGO J L. Vanadium: A review of the reproductive and developmental toxicity [J]. Reproductive Toxicology, 1996, 10(3): 175-182.
[6] COSTA M, KLEIN C B. Toxicity and carcinogenicity of chromium compounds in humans [J]. Critical Reviews In Toxicology, 2006, 36(2): 155-163.
[7] YANG K, ZHANG X Y, TIAN X D, et al. Leaching of vanadium from chromium residue [J]. Hydrometallurgy, 2010, 103(1-4): 7-11.
[8] JING X H, NING P G, CAO H B, et al. High-Performance Recovery of Vanadium(V) in Leaching/Aqueous Solution by a Reusable Reagent-Primary Amine N1519 [J]. ACS Sustain Chem Eng, 2017, 5(4): 3096-3102.
[9] JI Y L, SHEN S B, LIU J H, et al. Green and Efficient Process for Extracting Chromium from Vanadium Slag by an Innovative Three-Phase Roasting Reaction [J]. ACS Sustain Chem Eng, 2017, 5(7): 6008-6015.
[10] WANG M Y, CHEN B F, HUANG S, et al. A novel technology for vanadium and chromium recovery from V-Cr-bearing reducing slag [J]. Hydrometallurgy, 2017, 171(116-122.
[11] WANG G Y, ZHANG B G, LI S, et al. Simultaneous microbial reduction of vanadium (V) and chromium (VI) by Shewanella loihica PV-4 [J]. Bioresource Technology, 2017, 227(353-358.
[12] FAN Y Y, WANG X W, WANG M Y. Separation and recovery of chromium and vanadium from vanadium-containing chromate solution by ion exchange [J]. Hydrometallurgy, 2013, 136(31-35.
[13] CAVACO S A, FERNANDES S, AUGUSTO C M, et al. Evaluation of chelating ion-exchange resins for separating Cr(III) from industrial effluents [J]. Journal Of Hazardous Materials, 2009, 169(1-3): 516-523.
[14] 李鸿乂, 李翠, 张梦, et al. 离子交换法分离溶液中钒与铬的研究 [J]. 钢铁钒钛, 2014, 03): 5-9.
LI H Y, LI C, ZHANG M, et al. Study on separation of vanadium and chromium by ion exchange resin [J]. Iron Steel Vanadium Titanium, 2014, 03): 5-9.
[15] LIU S Y, WANG L J, CHOU K C. A Novel Process for Simultaneous Extraction of Iron, Vanadium, Manganese, Chromium, and Titanium from Vanadium Slag by Molten Salt Electrolysis [J]. Industrial & Engineering Chemistry Research, 2016, 55(50): 12962-12969.
[16] 蒋霖. 钒铬溶液中钒铬提取及分离工艺研究进展 [J]. 钢铁钒钛, 2014, 06): 52-59.
JIANG L. Research progress of the separation process of vanadium and chromium from solution containing vanadium and chromium [J]. Iron Steel Vanadium Titanium, 2014, 06): 52-59.
[17] YU S Q, MENG X S, CHEN J Y. SOLVENT-EXTRACTION OF VANADIUM(V) FROM AQUEOUS-SOLUTIONS BY PRIMARY AMINES [J]. Scientia Sinica Series B-Chemical Biological Agricultural Medical & Earth Sciences, 1982, 25(2): 113-123.
[18] NAYL A A, ALY H F. Solvent extraction of V(V) and Cr(III) from acidic leach liquors of ilmenite using Aliquat 336 [J]. Transactions Of Nonferrous Metals Society Of China, 2015, 25(12): 4183-4191.
[19] NING P G, LIN X, CAO H B, et al. Selective extraction and deep separation of V(V) and Cr(VI) in the leaching solution of chromium-bearing vanadium slag with primary amine LK-N21 [J]. Separation And Purification Technology, 2014, 137(109-115.
[20] WEN J W, LIU F, CAO H B, et al. Insights into the extraction of various vanadium species by primary amine [J]. Hydrometallurgy, 2017, 173(57-62.
[21] NING P G, LIN X, WANG X Y, et al. High-efficient extraction of vanadium and its application in the utilization of the chromium-bearing vanadium slag [J]. Chem Eng J, 2016, 301(132-138.
