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Characterization of Chromite Ore Processing Residue ...

Characterization of Chromite Ore Processing Residue ...

Accelerated one-dimensional unconfined swell tests were conducted for ferrous sulfate field-treated samples. The field-treated samples were subjected to wet and dry cycles over 100 days to accelerate the lithification of the samples

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  • Treatment of chromite ore processing residue by pyrolysis

    is the byproduct of chromate production process, which contains a large amounts of CrVI. The present work developed a new technique to treat , and the process involved mixing the with rice straw followed by pyrolysis

  • Detoxification and immobilization of chromite ore

     · As a by-product of the extraction of from COPR is a major Cr-bearing waste and has become the main source of Cr pollution in the environment. After several decades of extraction, the accumulated quantity of is significant, especially in some developing countries

  • Long-term treatment issues with chromite ore processing

    Cr6+ Alkaline pH > 12 is mobile in groundwater and is acutely toxic, mutagenic and is derived from the roasting of mixed with soda carcinogenic while Cr3+ is much less toxic and immobile under ash and slaked lime at ∼1200 C to oxidize Cr3+ and sequester normal groundwater conditions [3–5]

  • COPR - Chromite Ore Processing Residue

    Miscellaneous » Unclassified. Add to My List Edit this Entry Rate it: 1.00 / 1 vote Translation Find a translation for in other languages: Select another language: - Select - 简体中文 Chinese - Simplified

  • Remediation of chromite ore processing residue by

    Remediation of by hydrothermal process with starch View 0 peer reviews of Remediation of by hydrothermal process with starch on Publons COVID-19 : add an open review or score for a COVID-19 paper now to ensure the latest research gets the extra scrutiny it needs

  • Hexavalent chromium reduction in solution and in chromite

    Chromite ore processing residue COPR, the solid waste product from the high-temperature alkaline processing of ferrochromite FeO·CrO, contains CrVI in soluble and insoluble compounds formed in the roasting process

  • Long-term stability of FeSO 4 and H 2 SO 4 treated

    In this study, the long-term stability of CrVI in the FeSO 4 and H 2 SO 4 FeSO 4-H 2 SO 4 treated after 400 curing days and the stabilization mechanisms were investigated.FeSO 4-H 2 SO 4 treatment significantly reduced toxicity characteristic leaching procedure TCLP and synthetic precipitation leaching procedure SPLP CrVI concentrations to

  • Towards holistic technology solution to chromite ore

    Safe management and disposal of is an unsolved global problem. In spite of several global research efforts, the problem of safe management of and redemption of dump sites has remained unsolved. There is a high risk for all living beings in and around the dump sites due to prevailing significant amount of CrVI content in the

  • COPR - Chromite Ore Processing Residue | AcronymFinder

    How is abbreviated? stands for is defined as somewhat frequently

  • Microstructural Analyses of CrVI Speciation in Chromite

    The speciation and distribution of Cr VI in the solid phase was investigated for two types of chromite ore processing residue COPR found at two deposition sites in the United States: gray-black GB granular and hard brown HB cemented COPR

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