Controlling scale composition during acid pressure leaching of laterite and garnierite ore
US4415542A · kind A · utility
16Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1982 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Jun 21, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F14/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The scaling of autoclave and leaching-equipment surfaces during the high pressure leaching of nickeliferous oxide and silicate ores is controlled during leaching to favor the formation of scale containing substantial amounts of magnesium sulfate that is more easily removed by chemical dissolution using water or dilute sulfuric acid at temperatures ranging from about 50.degree. C. to 250.degree. C. than scale containing substantial amounts of alunite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.