PH22014000781U1 - Nickel laterite treatment process for the production of nhp - Google Patents
Nickel laterite treatment process for the production of nhpInfo
- Publication number
- PH22014000781U1 PH22014000781U1 PH22014000781U PH22014000781U PH22014000781U1 PH 22014000781 U1 PH22014000781 U1 PH 22014000781U1 PH 22014000781 U PH22014000781 U PH 22014000781U PH 22014000781 U PH22014000781 U PH 22014000781U PH 22014000781 U1 PH22014000781 U1 PH 22014000781U1
- Authority
- PH
- Philippines
- Prior art keywords
- leaching
- nickel
- stage
- iron
- leaching stage
- Prior art date
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- Manufacture And Refinement Of Metals (AREA)
Abstract
It is a laterite treatment process to extract nickel and other valuable constituents from limonite and saprolite ores to produce a saleable hydroxide product white the corresponding waste effluents are treated to suit environmental disposal standards. The leaching section takes advantage of the iron and magnesium content of the ore to induce in-process hydrolysis that regenerates acid, thereby minimizing overall acid requirement. Leaching is performed in two stages composed of an atmospheric tank leaching stage and a medium-pressure autoclave leaching stage. The high iron, low magnesium size fraction of the ore is leached in the atmospheric tank leaching stage, while the high magnesium, low iron size fraction is leached in the autoclave leaching stage. The pregnant leach solution undergoes a solution purification stage in the form of ion exchange, solvent extraction, or selective precipitation. The purified pregnant leach solution is then added with a precipitating agent to increase its pH thereby precipitating nickel in the form of nickel hydroxide. Waste effluents such as solid leach residue and barren solutions are treated by the addition of limestone and lime slurries to meet environmental standards for waste disposal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PH22014000781U PH22014000781Y1 (en) | 2014-12-10 | 2014-12-10 | Nickel laterite treatment process for the production of nhp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PH22014000781U PH22014000781Y1 (en) | 2014-12-10 | 2014-12-10 | Nickel laterite treatment process for the production of nhp |
Publications (2)
Publication Number | Publication Date |
---|---|
PH22014000781U1 true PH22014000781U1 (en) | 2020-01-31 |
PH22014000781Y1 PH22014000781Y1 (en) | 2020-01-31 |
Family
ID=69489873
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PH22014000781U PH22014000781Y1 (en) | 2014-12-10 | 2014-12-10 | Nickel laterite treatment process for the production of nhp |
Country Status (1)
Country | Link |
---|---|
PH (1) | PH22014000781Y1 (en) |
-
2014
- 2014-12-10 PH PH22014000781U patent/PH22014000781Y1/en unknown
Also Published As
Publication number | Publication date |
---|---|
PH22014000781Y1 (en) | 2020-01-31 |
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