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  Application of Satellite Remote Sensing, UAV-Geological …

  2023210 · The results of this investigation indicate that the integration of information extracted from image-processing algorithms using remote sensing data could be a broadly applicable tool for prospecting chromite ore deposits associated with ophiolitic complexes in mountainous and inaccessible regions such as Tibet’s oophiolitic zones.

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  Particle size and pH effects on remediation of chromite ore processing ...

  200881 · Request PDF | Particle size and pH effects on remediation of chromite ore processing residue using calcium polysulfide (CaS5) | A long-term bench scale treatability study was performed to assess ...

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  Microstructural Analyses of Cr(VI) Speciation in Chromite Ore ...

  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. COPR chemistry and mineralogy were investigated using micro-X-ray absorption spectroscopy and micro-X-ray …

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  Treatment of Hexavalent Chromium in Chromite Ore Processing …

  We investigated a method for delivering ferrous iron into the subsurface to enhance chemical reduction of Cr(VI) in chromite ore processing solid waste (COPSW) derived from the production of ferrochrome alloy. The COPSW is characterized by high pH (8.5−11.5) and high Cr(VI) concentrations in the solid phase (up to 550 mg kg-1) and dissolved phase …

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  Assessment of ferrous chloride and Portland cement for the …

  2015101 · Semantic Scholar extracted view of "Assessment of ferrous chloride and Portland cement for the remediation of chromite ore processing residue." by S. Jagupilla et al.

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  Research on the environmental stability performance of …

  Chromite ore processing residue (COPR) is a hazardous waste because of leachable chromium, especially Cr(VI). Therefore, ascorbic acid (AA) and blast furnace slag (BFS) have been used to detoxify and solidify COPR. On this basis, environmental stability experiments with high temperature and freeze–thaw cycles were carried out to explore …

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  Chromium Processing | Process Flow, Cases

  The solidification of chromite ore processing residue is based on environmental protection and resource utilization, and effectively curing harmful elements, reducing negative effects, and developing a harmless and low-emission curing process are the main development directions at this stage.

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  Chemistry and Leaching Behavior of Chromite Ore Processing …

  2018115 · Overall, results of this study provide the first geochemistry-based evidence that soda ash COPR is deemed to be a more environmentally friendly waste compared with lime-based COPR. Widespread conversion of chromite processing factories to this process in China and elsewhere will have important implications for environmental protection.

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  Review of Cr(VI) environmental practices in the chromite …

  2017111 · Developing chromite mining and/or processing, as well as building infrastructure in this sensitive ecosystem will require careful planning to mitigate environmental impacts. The Ring of Fire is also located within the traditional territories of several First Nations (Chong, 2014).

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