PH22014000781U1 - Nickel laterite treatment process for the production of nhp - Google Patents

Nickel laterite treatment process for the production of nhp

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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
Application number
PH22014000781U
Other versions
PH22014000781Y1 (en
Inventor
Vincent Smith
Venashree Smith
Original Assignee
Tvi Resource Dev Phils Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Tvi Resource Dev Phils Inc filed Critical Tvi Resource Dev Phils Inc
Priority to PH22014000781U priority Critical patent/PH22014000781Y1/en
Publication of PH22014000781U1 publication Critical patent/PH22014000781U1/en
Publication of PH22014000781Y1 publication Critical patent/PH22014000781Y1/en

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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.
PH22014000781U 2014-12-10 2014-12-10 Nickel laterite treatment process for the production of nhp PH22014000781Y1 (en)

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

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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)

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PH (1) PH22014000781Y1 (en)

Also Published As

Publication number Publication date
PH22014000781Y1 (en) 2020-01-31

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