| 发明名称 |
PROCESS TO OBTAIN HIGH SURFACE AREA MAGNETITE CONCENTRATE |
| 摘要 |
A mixture of iron oxides obtained by pyrite roasting is subjected to magnetic separation. The magnetic fraction so obtained is a magnetite concentrate which is highly efficient in absorbing hydrogen sulfide evolved from oil drilling wells. It can be incorporated into drilling muds even in non-alkaline medium. |
| 申请公布号 |
ZA8407667(B) |
申请公布日期 |
1986.05.28 |
| 申请号 |
ZA19840007667 |
申请日期 |
1984.09.28 |
| 申请人 |
PETROLEO BRASILEIRO S.A. - PETROBRAS |
发明人 |
JOAO TAVARES NEIVA DE FIGUEIREDO;CARLOS CESAR PEITER;HOSAM AHMED ABDALLAH ABDEL REHIM;IELTON FREDERICO DA PONTE |
| 分类号 |
B01J20/06;B03C1/015;C01G49/08 |
主分类号 |
B01J20/06 |
| 代理机构 |
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代理人 |
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