CN104561519A - Treatment method of high-magnesium noble metal concentrate - Google Patents
Treatment method of high-magnesium noble metal concentrate Download PDFInfo
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- CN104561519A CN104561519A CN201410721885.4A CN201410721885A CN104561519A CN 104561519 A CN104561519 A CN 104561519A CN 201410721885 A CN201410721885 A CN 201410721885A CN 104561519 A CN104561519 A CN 104561519A
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- precious metal
- high magnesium
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- noble metal
- magnesium
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
Abstract
The invention relates to a method for converting high-magnesium noble metal concentrate into a high-grade noble metal material. The melting temperature is lowered by sufficiently utilizing the low-melting-point materials in the smelting slag and controlling the material proportioning, a collector is utilized to sufficiently recover noble metals and other valuable metals in the smelting slag, and the materials are mixed with a proper type of slag to prepare the low-grade noble metal sulfonium by a resistance furnace smelting technique while controlling the smelting temperature at 1200-1350 DEG C; and most iron and partial sulfur are removed from the low-grade noble metal sulfonium by a converting technique to obtain the high-grade noble metal material which is (Pt+Pd+Au)1000g/t above, wherein the noble metal direct yield is 92% above. The method converts the high-magnesium noble metal intractable material into the high-grade noble metal material and recovers the nickel, copper, cobalt and other valuable metals in the smelting slag. Compared with the traditional technique, the method has the advantages of short process and high recovery rate of valuable metals. The invention provides an effective and practical method for economic utilization of nonferrous smelting slag.
Description
Technical field
The present invention relates to the technical field of smelting of precious metal concentrate, be specifically related to a kind of non-ferrous metal smelting material if nickel ore concentrate, copper ore concentrates etc. are containing the treatment process of the high magnesium precious metal concentrate of precious metal.
Background technology
For a long time, in actual production process, the rare precious metals such as the platinum in ore, palladium are dispersed in a large amount of ambrose alloy concentrate, because flotation concentrate precious metal grade is low, also output is high containing precious metal concentrate separately not have enrichment in ore dressing process, but enters into pyrogenic process and the wet production main flow of follow-up complexity with ambrose alloy concentrate.Namely becoming containing precious metal ore → through ore dressing and be separated → alloy → alloy sulfuration → secondary height sulfonium containing the high sulfonium → mill of precious metal concentrate → flash/top blow smelting → is once floating--mill floats separation → secondary alloy → precious metal smelting.Technical process is tediously long, especially because the fine alloy and precious metal sulfonium being rich in precious metal in high sulfonium ore-dressing technique does not recycle, the precious metal accounting for total amount 1/3rd enters the wet production flow process of major metal ambrose alloy cobalt again, again cause dispersion and the loss of precious metal, system recoveries rate is low, and the current precious metal rate of recovery is about 75%.
Summary of the invention
Technical problem to be solved by this invention provides a kind of to realize by dry, pyroprocessing the treatment process that high magnesium precious metal concentrate changes the high magnesium precious metal concentrate of higher-grade noble metal materials into through the high magnesium precious metal concentrate of Nelson's gravitational separation equipment output for the ore containing precious metal for shortcoming of the prior art.
Adopt following technical scheme for solving technical problem of the present invention: a kind for the treatment of process of high magnesium precious metal concentrate, its technological process is:
A. high magnesium precious metal concentrate is selected high magnesium precious metal wet concentrate through Nelson's gravitational separation equipment, wherein in high magnesium precious metal wet concentrate particle diameter be less than below 0.074mm account for 75%-80%;
B. dry kiln is heated up, make temperature rise to 100 DEG C-105 DEG C;
C. added in dry kiln by high magnesium precious metal wet concentrate and carry out drying, dried high magnesium precious metal wet concentrate moisture content is less than 3%;
D. by dried high magnesium precious metal concentrate, mixed containing precious metal smelting slag (its chemical composition is as shown in table 1), trapping agent, flux and reductive agent after send into resistance furnace;
E. controlling resistance furnace temperature 1200 DEG C-1350 DEG C, soaking time 30-40 minute, carries out the separation of slag sulfonium after naturally cooling, obtain low grade noble metal sulfonium and melting waste;
F. the low grade noble metal sulfonium of output is blown into higher-grade noble metal materials through oxidation.
In described Step d, trapping agent add-on is the 20-30% of dried high magnesium precious metal concentrate quality.
Containing precious metal smelting slag add-on in described Step d is 75 ~ 150% of dried high magnesium precious metal concentrate quality.
In described Step d, flux is lime and quartz, and its chemical composition is as shown in table 1.
Described lime adding amount is the 4-8% of dried high magnesium precious metal concentrate quality, and quartzy add-on is the 10-15% of dried high magnesium precious metal concentrate quality.
In described Step d, reductive agent is fine coal, and its chemical composition is as shown in table 2.
The add-on of described reductive agent fine coal is the 0.5-2% of dried high magnesium precious metal concentrate quality.
Wherein trapping agent derives from the floating alloy produced of high sulfonium mill, and derive from the iron vitriol dreg of yellow sodium of nickel electrowinning process deironing generation containing precious metal smelting slag, its chemical composition is as shown in table 1.
The present invention is applicable to containing magnesium oxide mass percent 0-18%, process containing the high magnesium precious metal concentrate of precious metal (Pt+Pd+Au) more than 220g/t.By with addition of containing the metallurgical slag of precious metal, flux, trapping agent and reductive agent, under certain temperature condition, high magnesium precious metal concentrate is fully contacted with materials such as containing precious metal smelting slag, makes Iron sulfuret in material be oxidized to iron protoxide, make Na
2o and flux generate low-melting-point material, make high magnesium precious metal infusibility concentrate become meltable concentrate, are become higher-grade noble metal materials through melting-be oxidized-blow.Shortened process, reclaims the valuable metals such as the precious metal in metallurgical slag simultaneously, improves the rate of recovery of the valuable metals such as precious metal, resource is fully utilized.To higher-grade noble metal materials concentration of precious metal 4-6 doubly, precious metal direct yield more than 92%, higher-grade noble metal materials (Pt+Pd+Au) 1000 g/t, can extract as precious metal the raw material smelted to high magnesium precious metal concentrate.
The present invention is a kind of method high magnesium precious metal concentrate being become higher-grade noble metal materials, make full use of low-melting-point material in metallurgical slag and reduce temperature of fusion, trapping agent is utilized fully to reclaim the valuable metal such as precious metal in metallurgical slag, adopt melting-blowing technology, realize high magnesium precious metal concentrate and change higher-grade noble metal materials into, reclaim the valuable metals such as nickel, copper, cobalt; Simultaneously for the economic utilization of nonferrous smelting slag provides a kind of effective, practical method, especially to the economic utilization of the nonferrous smelting slag stored up in a large number, be that a kind of investment is little, the significant method of economy, environmental benefit.
Embodiment
embodiment 1
High magnesium precious metal concentrate Chemical Composition is: nickel 2.98%, copper 1.27% iron 27.2%, cobalt 0.75%, S17.79%, magnesium oxide 18.04%, silicon-dioxide 27.49%, calcium oxide 2.18%, and platinum 590g/t, palladium 2.36g/t, golden 85.2g/t, surplus is impurity.
First high magnesium precious metal concentrate is selected high magnesium precious metal wet concentrate through Nelson's gravitational separation equipment, wherein in high magnesium precious metal wet concentrate, particle diameter is less than below 0.074mm and accounts for 75%, dry kiln is heated up, makes temperature rise to 105 DEG C, added equably in dry kiln by feeder by high magnesium precious metal wet concentrate and carry out drying, dried high magnesium precious metal wet concentrate moisture content is less than 3%, take a certain amount of dried high magnesium precious metal concentrate, add containing precious metal smelting slag by 150% of dried high magnesium precious metal concentrate quality, 30% of dried high magnesium precious metal concentrate quality adds trapping agent, 12.5% of dried high magnesium precious metal concentrate quality adds quartz, 6% of dried high magnesium precious metal concentrate quality adds lime, 2% of dried high magnesium precious metal concentrate quality adds fine coal, clay crucible is added after mixing of materials is even, then resistance furnace heating is put into, control techniques condition is smelting temperature 1250 DEG C, soaking time 30min, it is naturally cool that insulation terminates rear taking-up.The low grade noble metal sulfonium of output is carried out blowing output higher-grade noble metal materials and blowing slag.
Blowing slag can allocate Returning smelting process in concentrate into as cold burden, reclaims valuable metal.
The higher-grade noble metal materials Chemical Composition of the present embodiment output: nickel 53.8%, copper 16.73%, iron 3.5%, cobalt 0.45%, sulphur 22.25%, platinum 2085.5g/t, palladium 46.9g/t, golden 260.5g/t, other 3.03% (impurity such as calcium, magnesium and silicon), as shown in table 4, precious metal direct yield is 92.1%.
embodiment 2
High magnesium precious metal concentrate Chemical Composition: nickel 3.13%, copper 1.21% iron 27.8%, cobalt 0.79%, S17.19%, magnesium oxide 16.54%, silicon-dioxide 27.19%, calcium oxide 2.58%, platinum 535g/t, palladium 2.23g/t, golden 71.7g/t, surplus is impurity.
First high magnesium precious metal concentrate is selected high magnesium precious metal wet concentrate through Nelson's gravitational separation equipment, wherein in high magnesium precious metal wet concentrate, particle diameter is less than below 0.074mm and accounts for 80%, dry kiln is heated up, makes temperature rise to 100 DEG C, added equably in dry kiln by feeder by high magnesium precious metal wet concentrate and carry out drying, dried high magnesium precious metal wet concentrate moisture content is less than 3%, take a certain amount of dried high magnesium precious metal concentrate, add containing precious metal smelting slag by 125% of dried high magnesium precious metal concentrate quality, 25% of dried high magnesium precious metal concentrate quality adds trapping agent, 10% of dried high magnesium precious metal concentrate quality adds quartz, 4% of dried high magnesium precious metal concentrate quality adds lime, 1.5% of dried high magnesium precious metal concentrate quality adds fine coal, clay crucible is added after mixing of materials is even, then resistance furnace heating is put into, control techniques condition is smelting temperature 1200 DEG C, soaking time 30min, it is naturally cool that insulation terminates rear taking-up.The low grade noble metal sulfonium of output is carried out blowing output higher-grade noble metal materials and blowing slag.
The higher-grade noble metal materials Chemical Composition of the present embodiment output: nickel 50.8%, copper 17.45%, iron 3.8%, cobalt 0.46%, sulphur 23.25%, platinum 1435.2g/t, palladium 41.3g/t, golden 214.25g/t, other 2.91% (impurity such as calcium, magnesium and silicon), as shown in table 5, precious metal direct yield is 92.3%.
Blowing slag can allocate Returning smelting process in concentrate into as cold burden, reclaims valuable metal.
embodiment 3
High magnesium precious metal concentrate Chemical Composition is: nickel 3.03%, copper 1.17% iron 26.8%, cobalt 0.81%, S18.34%, magnesium oxide 15.34%, silicon-dioxide 28.49%, calcium oxide 2.35%, and platinum 361.2g/t, palladium 2.21g/t, golden 35.2g/t, surplus is impurity.
First high magnesium precious metal concentrate is selected high magnesium precious metal wet concentrate through Nelson's gravitational separation equipment, wherein in high magnesium precious metal wet concentrate, particle diameter is less than below 0.074mm and accounts for 78%, dry kiln is heated up, makes temperature rise to 105 DEG C, added equably in dry kiln by feeder by high magnesium precious metal wet concentrate and carry out drying, dried high magnesium precious metal wet concentrate moisture content is less than 3%, take a certain amount of dried high magnesium precious metal concentrate, add containing precious metal smelting slag by 75% of dried high magnesium precious metal concentrate quality, 20% of dried high magnesium precious metal concentrate quality adds trapping agent, 15% of dried high magnesium precious metal concentrate quality adds quartz, 8% of dried high magnesium precious metal concentrate quality adds lime, 0.5% of dried high magnesium precious metal concentrate quality adds fine coal, clay crucible is added after mixing of materials is even, then resistance furnace heating is put into, control techniques condition is smelting temperature 1350 DEG C, soaking time 40min, it is naturally cool that insulation terminates rear taking-up.The low grade noble metal sulfonium of output is carried out blowing output higher-grade noble metal materials and blowing slag.
Blowing slag can allocate Returning smelting process in concentrate into as cold burden, reclaims valuable metal.
The higher-grade noble metal materials Chemical Composition of the present embodiment output: nickel 47.3%, copper 20.35%, iron 3.7%, cobalt 0.42%, sulphur 23.55%, platinum 1020.3g/t, palladium 40.3g/t, golden 125.5g/t, other 4.56% (impurity such as calcium, magnesium and silicon), as shown in table 5, precious metal direct yield is 91.8%.
Table 1 is trapping agent, containing precious metal smelting slag and flux Chemical Composition Wt%
Table 2 fine coal chemical composition Wt%
Table 3 example 1 precious metal direct yield
Table 4 example 2 precious metal direct yield
Table 5 example 3 precious metal direct yield
。
Claims (7)
1. a treatment process for high magnesium precious metal concentrate, is characterized in that technological process is:
A. high magnesium precious metal concentrate is selected high magnesium precious metal wet concentrate through Nelson's gravitational separation equipment, wherein in high magnesium precious metal wet concentrate particle diameter be less than below 0.074mm account for 75%-80%;
B. dry kiln is heated up, make temperature rise to 100 DEG C-105 DEG C;
C. added in dry kiln by high magnesium precious metal wet concentrate and carry out drying, dried high magnesium precious metal wet concentrate moisture content is less than 3%;
D. by dried high magnesium precious metal concentrate, mixed containing precious metal smelting slag, trapping agent, flux and reductive agent after send into resistance furnace;
E. controlling resistance furnace temperature 1200 DEG C-1350 DEG C, soaking time 30-40 minute, carries out the separation of slag sulfonium after naturally cooling, obtain low grade noble metal sulfonium and melting waste;
F. the low grade noble metal sulfonium of output is blown into higher-grade noble metal materials through oxidation.
2. the treatment process of a kind of high magnesium precious metal concentrate according to claim 1, is characterized in that: in described Step d, trapping agent add-on is the 20-30% of dried high magnesium precious metal concentrate quality.
3. the treatment process of a kind of high magnesium precious metal concentrate according to claim 1, is characterized in that: the 75-150% in described Step d containing precious metal smelting slag add-on being dried high magnesium precious metal concentrate quality.
4. the treatment process of a kind of high magnesium precious metal concentrate according to claim 1 or 3, is characterized in that: in described Step d, flux is lime and quartz.
5. the treatment process of a kind of high magnesium precious metal concentrate according to claim 4, is characterized in that: described lime adding amount is the 4-8% of dried high magnesium precious metal concentrate quality, and quartzy add-on is the 10-15% of dried high magnesium precious metal concentrate quality.
6. the treatment process of a kind of high magnesium precious metal concentrate according to claim 1 or 5, is characterized in that: in described Step d, reductive agent is fine coal.
7. the treatment process of a kind of high magnesium precious metal concentrate according to claim 6, is characterized in that: the add-on of described reductive agent fine coal is the 0.5-2% of dried high magnesium precious metal concentrate quality.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410721885.4A CN104561519A (en) | 2014-12-03 | 2014-12-03 | Treatment method of high-magnesium noble metal concentrate |
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| CN201410721885.4A CN104561519A (en) | 2014-12-03 | 2014-12-03 | Treatment method of high-magnesium noble metal concentrate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575177A (en) * | 2020-11-24 | 2021-03-30 | 金川集团股份有限公司 | Method for reducing melting point and viscosity of colored refractory material |
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Application publication date: 20150429 |