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Method of treatment, stabilization and heave control for chromite ore processing residues (COPR) and chromium contaminated soils
Method of treatment, stabilization and heave control for chromite ore processing residues (COPR) and chromium contaminated soils
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机译:铬铁矿加工残渣(COPR)和铬污染土壤的处理,稳定和升沉控制方法
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摘要
A process for stabilizing chromium in a chromite ore processing residue (COPR) comprises the steps of adding an acid to consume the excess alkalinity of the COPR, resulting in a pH of less than 10; and adding a chemical reductant to the COPR to convert any hexavalent chromium present to trivalent chromium. A source of sulfate may be added to the COPR to reduce heave potential and improve its geotechnical stability. Treated COPR may be encapsulated in a material suitable to prevent contact between the COPR and water, such as an asphalt.
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