CN1818103A - Method for enriching platinum-group noble metal from adnic - Google Patents
Method for enriching platinum-group noble metal from adnic Download PDFInfo
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- CN1818103A CN1818103A CNA200610065040XA CN200610065040A CN1818103A CN 1818103 A CN1818103 A CN 1818103A CN A200610065040X A CNA200610065040X A CN A200610065040XA CN 200610065040 A CN200610065040 A CN 200610065040A CN 1818103 A CN1818103 A CN 1818103A
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- precious metal
- platinum family
- cupronickel
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- carbon monoxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention is about enriching the platinum metal from the colomony. It put the colomony into the fusion kettle and inlet the gas of CO>=70%, O2<=0.4%, the pressure of the fusion kettle is 5-25MPa, the temperature is 70 DEG C-250 DEG C, so the Ni, Fe and the Co react with the CO to separate from the alloy, so the residue is the platinum metal. The process cost low and is short; the recovery ratio of the platinum is high.
Description
Technical field
The present invention relates to a kind of from cupronickel the method for enrichment platinum family precious metal.
Background technology
In the nickel pyrometallurgical smelting process, the platinum family precious metal of association in the ore progressively is enriched in the cupronickel, and the composition of this alloy is based on metal state nickel, copper, and contains elements such as a spot of sulphur and iron.The platinum metals is present in wherein with the sosoloid form.
Before extracting the platinum family precious metal, must be with the platinum family concentration of precious metal to more than the 600g/t.The method that adopts is that cupronickel is dissolved in metallurgical furnace at present, and it is mixed sulfur vulcanization, makes most of nickel in the alloy, copper form sulfide, only stays a fraction of metallic state alloy.This high-temperature fusant makes it crystallize into nickel ore concentrate, copper ore concentrates and alloy monomer particle through the slow cooling insulation, and most of platinum family precious metal enters alloy, obtains enrichment, enters on a small quantity in nickel, the copper ore concentrates.With sulfonium body fragmentation, levigate, carry out obtaining nickel ore concentrate, copper ore concentrates and secondary alloy behind the magnetic flotation then.The platinum family bullion content can reach more than the 600g/t in the secondary alloy, reaches the requirement that precious metal extracts.
Use this method to carry out the platinum family concentration of precious metal, main shortcoming has: technical process is long, the production cost height, and in the alloy sulfidation, form a large amount of flue gases, and caused the loss of metal on the one hand, also polluted atmosphere.
Summary of the invention
The objective of the invention is for overcome long flow path, cost height that existing platinum family concentration of precious metal production technique exists, metal recovery rate is low and the environmental pollution important disadvantages, provide a kind of from cupronickel the method for enrichment platinum family precious metal.
The objective of the invention is to be achieved through the following technical solutions.
A kind of from cupronickel the method for enrichment platinum family precious metal, it is characterized in that its enrichment process in the synthesis reactor that cupronickel is packed into, synthesis reaction vessel feeds CO 〉=70%, O
2≤ 0.4% CO (carbon monoxide converter) gas, control synthesis reaction vessel pressure is at 5～25MPa, 70 ℃～250 ℃ of temperature, make nickel, iron, cobalt element and carbon monoxide gas precursor reactant in the cupronickel generate the gaseous metal carbonyl compound and break away from alloy, and the platinum family precious metal forms residue, makes the platinum family precious metal obtain enrichment.
Method of the present invention generates the gaseous metal carbonyl compound with the nickel in the thick nickelalloy, iron, cobalt and reaction of carbon monoxide, and then with its separation, makes the platinum family concentration of precious metal in residue, reaches the requirement that precious metal extracts.This technical process is short, and cost is low, rate of recovery height.
Because platinum family precious metal and carbon monoxide do not react, and all are enriched in the residue.The platinum family precious metal is almost without any loss in the whole process, rate of recovery height.And there is not waste gas to produce in the reaction process, free from environmental pollution.
Embodiment
A kind of from cupronickel the method for enrichment platinum family precious metal, its enrichment process is in the synthesis reactor that cupronickel is packed into, synthesis reaction vessel feeds CO 〉=70%, O
2≤ 0.4% CO (carbon monoxide converter) gas, control synthesis reaction vessel pressure is at 5～25MPa, 70 ℃～250 ℃ of temperature, make nickel, iron, cobalt element and carbon monoxide gas precursor reactant in the cupronickel generate the gaseous metal carbonyl compound and break away from alloy, and element such as platinum family precious metal and copper, sulphur and carbon monoxide do not react, form residue, make the platinum family precious metal obtain enrichment, reach the requirement of extracting the platinum family precious metal.
Further specify as follows below in conjunction with example to method of the present invention.
Embodiment 1
With quality is that the cupronickel of 1000Kg is packed in the synthesis reaction vessel, in the cupronickel nickeliferous weight be 65%, contain that weight of copper is 24.8%, sulfur-bearing weight 6%, iron content weight 2%, platinum family precious metal 230g/t, be that 80% CO (carbon monoxide converter) gas feeds continuously from the synthesis reaction vessel bottom with purity, pressure in the controlling reactor is 6MPa, temperature is 250 ℃, nickel, iron in the then thick nickelalloy begin and reaction of carbon monoxide, generate gasiform metal carbonyl compound, resultant is drawn by synthesis reaction vessel top.After 150 hours, reaction finishes, and obtains residue 367Kg, and wherein nickeliferous 32.3Kg, massfraction are 8.8%; Iron content 6Kg, massfraction 1.6%; Cupric 248Kg, massfraction are 67.6%; Sulfur-bearing 60Kg, massfraction 16.3%; And the platinum family concentration of precious metal is to 627g/t.
Embodiment 2
With quality be 1000Kg cupronickel pack in the synthesis reaction vessel, in the cupronickel nickel content 55%, copper content 29.3%, sulphur content 11%, iron level 2.3%, platinum family precious metal 360g/t, be that 80% CO (carbon monoxide converter) gas feeds continuously from the synthesis reaction vessel bottom with purity, pressure in the controlling reactor is 12MPa, temperature is 200 ℃, nickel, iron in the then thick nickelalloy begin and reaction of carbon monoxide, generate gasiform metal carbonyl compound, resultant is drawn by synthesis reaction vessel top.After 150 hours, reaction finishes, and obtains residue 461Kg, and wherein nickeliferous 26.4Kg, massfraction are 5.7%; Iron content 6.5Kg, massfraction 1.4%; Cupric 293Kg, massfraction are 63.6%; Sulfur-bearing 110Kg, massfraction 24%; And the platinum family concentration of precious metal is to 781g/t.
Embodiment 3
With quality be 1000Kg cupronickel pack in the synthesis reaction vessel, in the cupronickel nickel content 73%, copper content 15.8%, sulphur content 7%, iron level 2.5%, platinum family precious metal 310g/t, be that 85% CO (carbon monoxide converter) gas feeds continuously from the synthesis reaction vessel bottom with purity, pressure in the controlling reactor is 18MPa, temperature is 150 ℃, nickel, iron in the then thick nickelalloy begin and reaction of carbon monoxide, generate gasiform metal carbonyl compound, resultant is drawn by synthesis reaction vessel top.After 120 hours, reaction finishes, and obtains residue 285Kg, and wherein nickeliferous 33.6Kg, massfraction are 11.8%; Iron content 6.25Kg, massfraction 2.2%; Cupric 158Kg, massfraction are 55.0%; Sulfur-bearing 70Kg, massfraction 24.6%; And the platinum family concentration of precious metal is to 1088g/t.
Embodiment 4
With quality be 1000Kg cupronickel pack in the synthesis reaction vessel, in the cupronickel nickel content 75%, copper content 11.4%, sulphur content 11%, iron level 0.9%, platinum family precious metal 450g/t, be that 90% CO (carbon monoxide converter) gas feeds continuously from the synthesis reaction vessel bottom with purity, pressure in the controlling reactor is 23MPa, temperature is 100 ℃, nickel, iron in the then thick nickelalloy begin and reaction of carbon monoxide, generate gasiform metal carbonyl compound, resultant is drawn by synthesis reaction vessel top.After 120 hours, reaction finishes, and obtains residue 180Kg, and wherein nickeliferous 33Kg, massfraction are 18.3%; Iron content 3.5Kg, massfraction 1.9%; Cupric 114Kg, massfraction are 63.3%; Sulfur-bearing 11Kg, massfraction 6.1%; And the platinum family concentration of precious metal is to 2500g/t.
Claims (1)
1. the method for an enrichment platinum family precious metal from cupronickel is characterized in that its enrichment process in the synthesis reactor that cupronickel is packed into, and synthesis reaction vessel feeds CO 〉=70%, O
2≤ 0.4% CO (carbon monoxide converter) gas, control synthesis reaction vessel pressure is at 5～25MPa, 70 ℃～250 ℃ of temperature, make nickel, iron, cobalt element and carbon monoxide gas precursor reactant in the cupronickel generate the gaseous metal carbonyl compound and break away from alloy, and the platinum family precious metal forms residue, makes the platinum family precious metal obtain enrichment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610065040XA CN1818103A (en) | 2006-03-17 | 2006-03-17 | Method for enriching platinum-group noble metal from adnic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610065040XA CN1818103A (en) | 2006-03-17 | 2006-03-17 | Method for enriching platinum-group noble metal from adnic |
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| CN1818103A true CN1818103A (en) | 2006-08-16 |
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| CNA200610065040XA Pending CN1818103A (en) | 2006-03-17 | 2006-03-17 | Method for enriching platinum-group noble metal from adnic |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526040A (en) * | 2013-10-11 | 2014-01-22 | 金川集团股份有限公司 | Process for removing base metals in platinum group metal containing material |
| CN105296759A (en) * | 2015-11-18 | 2016-02-03 | 金川集团股份有限公司 | Method for selectively separating copper and nickel from platinum group metal feed liquid |
-
2006
- 2006-03-17 CN CNA200610065040XA patent/CN1818103A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526040A (en) * | 2013-10-11 | 2014-01-22 | 金川集团股份有限公司 | Process for removing base metals in platinum group metal containing material |
| CN103526040B (en) * | 2013-10-11 | 2015-08-12 | 金川集团股份有限公司 | A kind of technique removing base metal from platinum group metalliferous material |
| CN105296759A (en) * | 2015-11-18 | 2016-02-03 | 金川集团股份有限公司 | Method for selectively separating copper and nickel from platinum group metal feed liquid |
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