发明名称 |
Methods of treatment of chromite ore processing residue |
摘要 |
Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer; contacting the chromite processing wastes with ferrous ion; contacting the chromite processing wastes with sulfide ion; and, contacting the chromite processing wastes with ferrous sulfide.
|
申请公布号 |
US8192705(B2) |
申请公布日期 |
2012.06.05 |
申请号 |
US20090634728 |
申请日期 |
2009.12.10 |
申请人 |
CHISICK STEVEN A.;HEFFERNAN TIMOTHY CLARK;MCCULLOUGH THOMAS P.;MEYER GARY JOEL;REDOX SOLUTIONS, LLC |
发明人 |
CHISICK STEVEN A.;HEFFERNAN TIMOTHY CLARK;MCCULLOUGH THOMAS P.;MEYER GARY JOEL |
分类号 |
C01G37/00 |
主分类号 |
C01G37/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|