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Method of synthetically and highly effectively reclaiming nickel and magnesium resource from nickel-containing serpentine

A serpentine and nickel-magnesium technology, which is applied in the fields of extraction and comprehensive efficient recovery of nickel, nickel-containing serpentine ore chemical metallurgy, and magnesium metals, can solve the unsatisfactory leaching effect of target metals such as magnesium and insufficient consideration of magnesium recovery rate and other issues, to achieve the effect of promoting sustainable development, reducing the consumption of chemicals and making full use of them

Inactive Publication Date: 2007-08-15
FUJIAN SHUNCHANG JINZI MINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the methods involved in the above-mentioned patents, the comprehensive utilization of serpentine ore is considered, and the magnesium and silicon resources in it are fully recovered, and the possibility of efficiently recovering magnesium from the magnesium-containing leaching solution is also shown; Insufficient consideration of the efficiency, especially under simple normal temperature and pressure conditions, the valuable metals in silicate are difficult to leach, which will inevitably lead to unsatisfactory leaching effect of target metals such as magnesium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The nickel-containing serpentine ore sample was taken from a mine in Quanzhou, Fujian, and the phase analysis results of nickel and magnesium are shown in the table below.

[0030] Phase analysis results of Mg in nickel-bearing serpentine ore samples

[0031]

name

Magnesium oxide and carbon

Magnesium in salt

of serpentine

magnesium

Insoluble silicic acid

magnesium in salt

total

MgO%

By Mg%

Content, MgO%

3.57

30.70

3.13

37.40

22.27

Occupancy, %

9.54

82.09

8.37

100.0

100.0

[0032] Phase analysis results of Ni in nickel-bearing serpentine ore samples

[0033] name

nickel sulfate

Nickel oxide

Nickel sulfide

nickel in silicate

total

Content, Ni%

0.010

0.010

0.095

0.085

0.20

Occupancy, %

5.00

5.00

47.50

4...

Embodiment 2

[0037] Nickel-containing serpentine mine is the same as embodiment one.

[0038] Get 100 parts of ore samples, add 200 parts of water ball mill after crushing (less than 0.074mm accounts for 68.4%), the obtained slurry is joined in the autoclave together with 125 parts of concentrated hydrochloric acid (31%, industrial product), start stirring (400rpm), Heating reaction, control temperature is 110 ℃ (pressure is 140Kpa), discharges and filters after reacting for 90min, the pH value of the obtained nickel-magnesium leaching solution is 0.5, and the leaching slag contains 0.08% of magnesium and 0.009% of nickel; the leaching rates of nickel and magnesium reach respectively 93.5%, 98.5%.

[0039] The obtained nickel-containing and magnesium-containing leachate is deironed by hydroxide (the loss rates of nickel and magnesium in the iron slag are respectively 10.5% and 7.5%), and then precipitated step by step with 40% sodium hydroxide solution to obtain nickel hydroxide respective...

Embodiment 3

[0041] Nickel-containing serpentine mine is the same as embodiment one.

[0042] Take 100 parts of ore samples, add 100 parts of water ball mill after crushing (less than 0.074mm accounts for 80.0%), and add the obtained slurry together with 109 parts of concentrated nitric acid (98%, industrial product) and 100 parts of water into the autoclave, and start stirring (500rpm), heating reaction, control temperature is 170 ℃ (pressure is 195Kpa), discharges and filters after reacting for 240min, the pH value of the obtained nickel-magnesium leaching solution is 1.0, and the leaching slag contains 0.06% of magnesium and 0.005% of nickel; nickel, magnesium The leaching rates reached 96.5% and 99.2% respectively.

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Abstract

The invention discloses a method to reclaim nickel magnesium resource from Ni-bearing serpentinite, which comprises the following steps: óƒ bruising the Ni-bearing serpentinite firstly; grinding to 0.074mm-2.0mm through ball; setting the grinding density at 20%-60%; ó getting ore pulp; adding into autoclave; stirring; adding into strong acid with pH value at 0.5-3; ó� heating-up; stirring; reacting with leaching reaction time of acid fracturing boil at 30min-240min and temperature at 90-220 deg.c and pressure at 110Kpa-2300Kpa; óœ finishing the reaction; filtering; getting nickel magnesium leachate; separating and reclaiming nickel magnesium product with traditional fractional precipitation method; or reclaiming the resource with extraction solvent or ion exchange. This invention can increase the quality of product and decrease the preparing cost.

Description

technical field [0001] The technical field of the invention is hydrometallurgy, and relates to a chemical metallurgy method of nickel-containing serpentine ore. In particular, the present invention relates to a method for extracting and comprehensively and efficiently recovering nickel and magnesium metals from nickel-containing serpentine ore under certain temperature and pressure conditions. Background technique [0002] Serpentine (Mg 6 [Si 4 o 10 ](OH) 8 ) is a layered silicate mineral, its structural layer is a double layer composed of a layer of silicon-oxygen tetrahedron and a layer of magnesia octahedron. The six-time coordinated Mg in the ore can be replaced by Al 3+ 、Ni 2+ , Fe 2+ , Fe 3+ , Mn 2+ Replaced by others, nickel-containing serpentine is a common nickel- and magnesium-containing mineral. my country is rich in serpentine resources and has good texture. At present, the development and utilization of serpentine in my country is still in its infancy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/04C22B3/22C22B23/00C22B26/22
CPCY02P10/20
Inventor 符剑刚王晖谢海怣
Owner FUJIAN SHUNCHANG JINZI MINE
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