Loading patent…
AssigneeThe Trustees of the Stevens Institute of Technology
InventorsMahmoud Wazne, Dimitris Dermatas, Dilhan M. Kalyon, Xiaoguang Meng, Maria Kaouris, John J. Morris
Estimating the term…
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.
A process for geotechnically stabilizing a mineral matrix associated with a chromite ore processing residue, the process comprising the steps of
A process for geotechnically stabilizing a mineral matrix associated with a chromite ore processing residue, said mineral matrix comprising at least one mineral which creates in the mineral matrix a tendency to swell, said process comprising the steps of
Dependencies are inferred from the claim text.