Efficient Separation and Extraction of Vanadium and Chromium in High Chromium Vanadium Slag by Selective Two-Stage Roasting–Leaching
Sign Up to like & getrecommendations! Published in 2018 at "Metallurgical and Materials Transactions B"
DOI: 10.1007/s11663-018-1197-8
Abstract: Vanadium and chromium are important rare metals, leading to a focus on high chromium vanadium slag (HCVS) as a potential raw material to extract vanadium and chromium in China. In this work, a novel method… read more here.
Keywords: high chromium; separation; vanadium chromium; vanadium ... See more keywords
Comparison of Ultrasound-Assisted and Regular Leaching of Vanadium and Chromium from Roasted High Chromium Vanadium Slag
Sign Up to like & getrecommendations! Published in 2018 at "JOM"
DOI: 10.1007/s11837-017-2662-6
Abstract: AbstractUltrasound-assisted leaching (UAL) was used for vanadium and chromium leaching from roasted material obtained by the calcification roasting of high-chromium–vanadium slag. UAL was compared with regular leaching. The effect of the leaching time and temperature,… read more here.
Keywords: regular leaching; high chromium; vanadium chromium; vanadium ... See more keywords
Recent progress in preparation of branched polyethylene with nickel, titanium, vanadium and chromium catalytic systems and EPR study of related catalytic systems
Sign Up to like & getrecommendations! Published in 2019 at "European Polymer Journal"
DOI: 10.1016/j.eurpolymj.2019.109339
Abstract: Abstract Catalysts play a pivotal role in the olefin polymerization process. After decades of development, a growing number of transition metal catalysts have been widely used in the field of olefin polymerization. Among them, the… read more here.
Keywords: vanadium chromium; titanium vanadium; nickel titanium; catalytic systems ... See more keywords
Co-extraction of vanadium and chromium from high chromium containing vanadium slag by low-pressure liquid phase oxidation method
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Cleaner Production"
DOI: 10.1016/j.jclepro.2018.08.288
Abstract: Abstract High chromium containing vanadium slag is refractory, and therefore cannot be processed efficiently by traditional roasting method. In this study, a low pressure leaching process using NaOH solution to co-extract both vanadium and chromium… read more here.
Keywords: vanadium slag; chromium; vanadium chromium; vanadium ... See more keywords
Separation and recovery of vanadium and chromium from acidic leach solution of V-Cr-bearing reducing slag
Sign Up to like & getrecommendations! Published in 2017 at "Journal of environmental chemical engineering"
DOI: 10.1016/j.jece.2017.09.001
Abstract: Abstract The separation and recovery of vanadium and chromium from an acidic V-Cr-bearing reducing slag leach solution was investigated by selective oxidation of V(IV) using manganese dioxide, followed by precipitation of V(V) and Cr(III), respectively.… read more here.
Keywords: leach solution; recovery vanadium; solution; vanadium chromium ... See more keywords
Efficient extraction and separation of vanadium and chromium in high chromium vanadium slag by sodium salt roasting-(NH4)2SO4 leaching
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Industrial and Engineering Chemistry"
DOI: 10.1016/j.jiec.2018.11.043
Abstract: Abstract A novelty process based on sodium salt roasting-(NH4)2SO4 leaching was proposed to extract vanadium and chromium in high chromium vanadium slag (HCVS). V2O5 and Cr2O3 was then prepared. The effects of roasting and leaching… read more here.
Keywords: nh4 2so4; chromium; vanadium chromium; vanadium ... See more keywords
Solvothermal synthesis and characterization of nanocrystalline vanadium-chromium composite oxides and catalytic ammoxidation of 2,6-dichlorotoluene
Sign Up to like & getrecommendations! Published in 2018 at "Chinese Journal of Catalysis"
DOI: 10.1016/s1872-2067(18)63119-5
Abstract: Abstract Vanadium-chromium oxides (VCrO) were usually prepared by high-temperature solid-state reactions; however, mixed phases were frequently produced and the morphology of the products was not well controlled. In this work, we prepared amorphous VCrO precursors… read more here.
Keywords: ammoxidation dichlorotoluene; water; composite oxides; vanadium chromium ... See more keywords
Recovery and Separation of Vanadium and Chromium by Two-Step Alkaline Leaching Enhanced with an Electric Field and H2O2
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DOI: 10.1021/acsomega.9b04346
Abstract: This paper focused on the treatment of vanadium–chromium reducing residue with a two-step alkaline leaching process: electro-oxidation leaching of vanadium and H2O2 as well as oxidation leaching of chromium in an alkaline medium. The effects… read more here.
Keywords: alkaline leaching; two step; vanadium chromium; vanadium ... See more keywords
Synthesis and properties of N-methylimidazole solvates of vanadium(ii), chromium(ii) and iron(ii) phthalocyanines. Strong NIR absorption in VII(MeIm)2(Pc2-).
Sign Up to like & getrecommendations! Published in 2018 at "Dalton transactions"
DOI: 10.1039/c8dt00459e
Abstract: N-Methylimidazole (MeIm) solvates of vanadium(ii), chromium(ii) and iron(ii) phthalocyanines: [VII(MeIm)2(Pc2-)]0·MeIm (1) and [MII(MeIm)2(Pc2-)]0·2C6H4Cl2 (M = V (2), Cr (3), and Fe (4)) have been obtained and studied in a crystalline form. It has been shown… read more here.
Keywords: absorption; meim; vii; meim pc2 ... See more keywords