CN106148723A - The device and method of noble metal in trapping low grade noble metal raw material - Google Patents
The device and method of noble metal in trapping low grade noble metal raw material Download PDFInfo
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- CN106148723A CN106148723A CN201510273702.1A CN201510273702A CN106148723A CN 106148723 A CN106148723 A CN 106148723A CN 201510273702 A CN201510273702 A CN 201510273702A CN 106148723 A CN106148723 A CN 106148723A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention provides and a kind of trap the device of noble metal in low grade noble metal raw material, including reaction member, reaction member includes: at the bottom of tower, at the bottom of tower in be provided with barricade, this barricade will be divided into melting pond and blowing pond at the bottom of tower；Reaction tower, limits reaction chamber in reaction tower, the bottom of reaction chamber connects with melting pond, and its top is provided with several the first feed introduction；Flue, the bottom of flue connects with blowing pond；The capture method utilizing this device comprises the following steps: S1: Feedstock treating；S2: space melting；S3: slag making precipitates and shunts；S4: blowing sulfonium；S5: refine.In trapping low grade noble metal raw material of the present invention, device and method sulfonium based on melted base metal or the metal of noble metal have the strongest trapping ability to gold, silver and platinum-group noble metals and design, utilize the chemical reaction heat of base metal sulfide concentrate, reduce the energy consumption of smelting process, melting is carried out in the confined space connected with blowing, it is to avoid the poisonous gas leakage pollution to environment.
Description
Technical field
The invention belongs to smelting field of nonferrous metal, especially relate to a kind of trapping low grade noble metal raw material
The device and method of middle noble metal.
Background technology
Gold, silver and platinum group metal are as precious metal material, due to complexity and your gold of its occurrence status
Belong to the limitation of metallurgical industry, cause in refinement waste residue and still have the most unrefined precious metal element.But no matter
It is to use the cyaniding technique in conventional wet, or uses the top blast in pyrogenic process, bottom blowing etc. to need high pressure
, all there is the response rate low in the various bath smelting techniques of power air blast, the problem that environmental pollution is big and energy consumption is high.
The poorest along with resource, it is achieved the low cost of Precious Metals Resources, efficiently utilize and produce with cleaning, special
Be not make complicated low grade noble metal waste material (as the successive dynasties abandon various containing noble metal residue) renewable resources,
Have great importance.
Summary of the invention
In view of this, it is contemplated that propose a kind of to trap the dress of noble metal in low grade noble metal raw material
Putting, to solve, the efficiency that refinement noble metal is faced from low grade noble metal raw material at present is low, environment is dirty
The problem that dye is big and energy consumption is higher.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of trap the device of noble metal in low grade noble metal raw material, including refinery unit, also include anti-
Unit, described reaction member is answered to include:
At the bottom of tower, at the bottom of described tower in be provided with barricade, this barricade will be divided at the bottom of described tower melting pond and blowing pond,
Being divided into melting slag blanket district and matte layer district along direction from the top down in described melting pond, described barricade is provided with
Communicating passage, described melting pond is connected by described communicating passage with described blowing pond, edge in described blowing pond
Direction from the top down is divided into blowing slag blanket district and crude metal floor district, described melting slag blanket district and blowing slag blanket
The top connection in district, described blowing pond is in the sidewall in described crude metal floor district and is provided with some second chargings
Nozzle；
Reaction tower, limits reaction chamber, the bottom of described reaction chamber and described melting pond in described reaction tower
Connection, its top is provided with several the first feed introduction；
Flue, the bottom of described flue connects with described blowing pond.
Further, the upper surface of described communicating passage is positioned at described melting slag blanket district and described matte layer district
Interfacial lower section.
Further, described second feed introduction is uniformly arranged along the circumference in described blowing pond, described melting
The sidewall in pond is provided with some fuel inlets.
Further, waste heat boiler, the import of described waste heat boiler and described flue it are provided with after described flue
Outlet.
Further, described melting pond is positioned at described melting slag blanket district and is provided with smelting slag outlet, described molten
Refining slag outlet connects with described melting slag blanket district.
Further, described blowing pond be positioned at described blowing slag blanket district be provided with blowing slag outlet, described in blow
Refining slag outlet connects with described blowing slag blanket district, and described blowing pond is positioned at described crude metal floor district and is provided with slightly
Metal outlet, the outlet of described crude metal connects with described crude metal floor district.
Further, the quantity of shown first feed introduction is 1-4.
Relative to prior art, the device of noble metal in trapping low grade noble metal raw material of the present invention
Have the advantage that
(1) in trapping low grade noble metal raw material of the present invention the device of noble metal based on melted
Sulfonium or the metal of base metal have the strongest trapping ability to gold, silver and platinum-group noble metals and design, this
Device makes full use of the chemical reaction heat of base metal sulfide concentrate, reduces the energy consumption of smelting process,
Melting simultaneously is carried out in the confined space connected with blowing, it is to avoid to environment after poisonous gas leakage
Pollute.
(2) waste heat boiler in the device of noble metal in trapping low grade noble metal raw material of the present invention
Setting, can the partial heat taken away of efficient recovery flue gas, improve the utilization rate of heat, gas passes through
After waste heat boiler, SO therein2Can be used for manufacturing sulphuric acid and sulfur, it is to avoid make after its directly discharge
The pollution of air in pairs；It is being provided with smelting slag outlet at the bottom of tower, after smelting slag is discharged, it is being selected
Ore deposit operates, and the recyclable recycling of concentrate therein, mine tailing can utilize as construction material secondary, decrease
Melting rubbish directly discharge pollution on the environment, improve the utilization ratio of raw material simultaneously, it is to avoid
Waste.
Another object of the present invention is to propose a kind of utilization and trap noble metal in low grade noble metal raw material
The method of device, to solve at present for noble metal capture method energy consumption in low grade noble metal raw material
Greatly, the problem that environmental pollution is serious.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of trap the capture method of the device of noble metal in low grade noble metal raw material, including following step
Rapid:
S1: Feedstock treating: raw material includes low grade noble metal raw material, base metal sulfide concentrate and flux,
Raw material is dried process, and is ground into powdery；
S2: space melting: by several first feed introduction described, spray into former in described reaction chamber
, in described reaction chamber, there is space melting oxidation reaction, oxidation reaction in material, oxidant and sludging flux
The gas produced enters in described flue；
S3: slag making precipitates and shunts: in the product produced in described reaction chamber enters at the bottom of described tower,
In described melting pond, Oxide and sulfide reacts to each other, and generates sulfonium, meanwhile, iron oxides and slag making
Flux generation slag making reaction forms smelting slag, and smelting slag and sulfonium are layered after precipitation, are described smelting slag
Floor district and matte layer district, the gas that above-mentioned reaction produces enters described flue, and the sulfonium in described matte layer district is through even
Circulation passage enters described blowing pond；
S4: blowing sulfonium: spray into oxidizing gas and slag making in described blowing pond by the second feed introduction
Solvent, makes FeS be oxidized to FeO, FeO and reacts formation blowing slag again with sludging flux generation slag making, with
Time, the sulfonium in described matte layer district is oxidized to crude metal, blowing slag and crude metal through precipitation by oxidizing gas
Rear layering, is described blowing slag blanket district and described crude metal floor district, and the gas that blowing produces enters described
Flue；
S5: refine: by crude metal after the outlet of described crude metal is discharged, by refining furnace refine and electrolysis
Refining procedure, by concentration of precious metal in the earth of positive pole.
Further, after the smelting slag produced in described step S3 is discharged by smelting slag outlet, first carry out
Ore dressing processes, and is classified as concentrate and tailings, is then reclaimed by concentrate, repeats to walk S2 to step
S5, after the gas that the reaction in described step S3 and step S4 produces enters described flue, first passes through institute
State waste heat boiler to be reclaimed by its heat, then by the sulfur recovery in gas.
Further, the noble metal in described low grade noble metal raw material includes gold, silver and platinum family element,
Described base metal sulfide concentrate is cuproaurite, lead concentrate, nickel sulfide concentrate.
Further, described oxidant is normal air or oxygen-enriched air or purity oxygen.
Described capture method and the device of noble metal in above-mentioned trapping low grade noble metal raw material are relative to existing
There is technology have the advantage that identical, do not repeat them here.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the present invention's
Schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.?
In accompanying drawing:
Fig. 1 is the knot of the device of noble metal in the trapping low grade noble metal raw material described in the embodiment of the present invention
Structure schematic diagram；
Fig. 2 is the catching of the device of noble metal in the trapping low grade noble metal raw material described in the embodiment of the present invention
The flow chart of diversity method.
Description of reference numerals:
At the bottom of 1-tower, 11-melting pond, 110-fuel inlet, 111-melting slag blanket district, 112-matte layer district,
12-blows pond, and 121-blows slag blanket district, 122-crude metal floor district, 2-barricade, 21-communicating passage, 3-
Reaction tower, 31-reaction chamber, 4-the first feed introduction, 5-the second feed introduction, 6-flue, 7-waste heat
Boiler, 8-smelting slag exports, and 9-blowing slag outlet, 10-crude metal exports.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment
Levy and can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
The device of noble metal in low grade noble metal raw material is trapped, including refine list as it is shown in figure 1, a kind of
Unit, also includes that reaction member, described reaction member include:
At the bottom of tower 1, being provided with barricade 2 in 1 at the bottom of tower, this barricade 2 is divided into melting pond 11 and blowing by the bottom of tower 1
Pond 12, is divided into melting slag blanket district 111 and matte layer district 112 along direction from the top down in melting pond 11,
Being communicated with passage 21 on barricade 2, communicating passage 21 is by described melting pond 11 and described blowing pond 12
Connection, is divided into blowing slag blanket district 121 and crude metal floor district 122 along direction from the top down in blowing pond 12,
Melting slag blanket district 111 connects with the top in blowing slag blanket district 121, and blowing pond 12 is in described crude metal
The sidewall in floor district 122 is provided with some second feed introduction 5；1 design at the bottom of the tower of this structure achieves former
The melting of material is persistently carried out in the space connected with blowing, on the one hand improves during melting exothermic
Utilization rate, reduces energy consumption, and the gas leakage on the other hand avoiding reaction generation causes the dirt to air
Dye；Second feed introduction 5 is for spraying into oxidizing gas, in making matte layer district 112 in blowing pond 12
Sulfonium react generation crude metal, the intervention of gas simultaneously adds the turbulent journey in crude metal floor district 122
Degree, makes sulfonium and oxidizing gas haptoreaction more abundant, and the transformation efficiency of sulfonium is higher, in order to further
Improve the efficiency changing into crude metal of sulfonium, by some second feed introduction 5 along described blowing pond 12
Circumference is uniformly arranged；The sidewall in described melting pond 11 is provided with some fuel inlets 110, when in melting pond
Shortage of heat time, fuel need to be sprayed into by fuel inlet 110 in melting pond, by the burning of fuel
Heat, to improve the temperature in melting pond；
Reaction tower 3, limits reaction chamber 31, the bottom of reaction chamber 31 and melting pond 11 in reaction tower 3
Connection, its top is provided with several the first feed introduction 4；The quantity of the first feed introduction 4 is 1-4,
Weight according to raw material selects the quantity of the first feed introduction 4, to reach raw material with optimal disperse state
Complete melting reaction；
Flue 6, the bottom of flue 6 connects with described blowing pond 12；The gas that melting and blowing reaction produce
Body all can be discharged by flue 6.
As it is shown in figure 1, the upper surface of communicating passage 21 is positioned at melting slag blanket district 111 and matte layer district 112
Interfacial lower section；This kind of structure of communicating passage 21 can prevent the melting in melting slag blanket district 111
Slag enters blowing pond 12, reduces the transformation efficiency of sulfonium.
As it is shown in figure 1, be provided with waste heat boiler 7 after flue 6, the import of waste heat boiler 7 and flue 6
Outlet, this waste heat boiler 7 is the waste heat boiler of band water cooled wall type.
As it is shown in figure 1, melting pond 11 is positioned at described melting slag blanket district 111 is provided with smelting slag outlet 8,
Smelting slag outlet 8 connects with melting slag blanket district 111.
As it is shown in figure 1, blowing pond 12 is positioned at blowing slag blanket district 121 is provided with blowing slag outlet 9, blowing
Slag outlet 9 connects with blowing slag blanket district 121, and blowing pond 12 is positioned at described crude metal floor district 122 and sets
Crude metal outlet 10, crude metal outlet 10 is had to connect with crude metal floor district 122.
In conjunction with Fig. 2, to produce gold 5 tons, 2 tons of platinum, silver 160 tons and the low product of trapping of copper 50,000 tons year
As a example by the device of position noble metal, the method for noble metal in trapping low grade noble metal raw material is done the most in detail
Most explanation, the internal diameter wherein trapping the reaction tower 3 in the device of low grade noble metal is 4m, a height of
6.8m:
Comprise the following steps:
S1: Feedstock treating: raw material includes low grade noble metal raw material, copper concentrate and sludging flux titanium dioxide
Silicon, is dried process by raw material, before concentrate drying aqueous 8%, the most aqueous 0.5%, and by it
Being ground into powdery, the noble metal in this low grade noble metal raw material includes gold, silver and platinum group metal, wherein
The composition of low grade noble metal raw material is: Au:13.5g/t, Pt:5.4g/t, Ag:433g/t, S:
20%, Fe:25.5%, SiO2: 12.1%, copper concentrate composition is: Cu:13.5%Fe:22.7%, S:
27.8%, SiO2: 8.7%；
S2: space melting: by several the first feed introduction 4, spray into raw material in institute's reaction chamber 31
And oxidant, this oxidant be oxygen-containing 56%, temperature be the air of 25 DEG C, raw material stops under suspended state
Staying about 3 seconds, melting oxidation reaction in space occurs rapidly in reaction chamber 31, oxidation reaction produces
Gas enters in described flue 6；
S3: slag making precipitates and shunts: the product produced in reaction chamber 31 enters at the bottom of described tower 1
In, in described melting pond 11, Oxide and sulfide reacts to each other, and generates copper matte regulus, meanwhile, ferrum oxygen
Compound and flux SiO2Slag making reaction is occurred to form smelting slag 2FeO SiO2, smelting slag and copper matte regulus are through precipitation
Rear layering, is melting slag blanket district 111 and matte layer district 112, and the gas that above-mentioned reaction produces enters flue
6, the copper matte regulus in matte layer district 112 enters described blowing pond 12 through communicating passage 21；
S4: blowing sulfonium: spray into oxygen and sludging flux in blowing pond 12 by the second feed introduction 5
Silicon dioxide, makes FeS be oxidized to FeO, FeO and reacts formation blowing slag again with silicon dioxide generation slag making,
Meanwhile, the copper matte regulus in matte layer district 112 is oxidized to blister copper by air, and blowing slag is layered after precipitation with blister copper,
Being blowing slag blanket district (121) and crude metal floor district (122), the gas that blowing produces enters flue (6)；
S5: refine: by blister copper after crude metal outlet 10 discharge, by refining furnace refine and electrolysis essence
Gold, silver and platinum are enriched in the earth of positive pole by refining operation, and gold and silver recoveries reaches 98.5%, platinum
The response rate is 98%.
After the smelting slag wherein produced in step S3 is by smelting slag outlet 8 discharge, first carry out choosing of swimming
Ore deposit processes, and is classified as concentrate and tailings, is then reclaimed by concentrate, repeats step S1 to S5；
After the gas that reaction in step S3 and step S4 produces enters described flue 6, first pass through described waste heat
Exhaust temperature is cooled to 300 degree by boiler 7, reclaims its major part heat, then through electric precipitation, cloth bag
The means cleaning of off-gas such as gather dust, SO in tail gas2Content be 28.3%, be subsequently used for extracting sulfuric acid.
In addition said apparatus also may select nickel gold mine as gold, silver former in trapping low grade noble metal raw material
Material, sprays into nickel gold mine in reaction chamber 31 by the first feed introduction 4 and temperature is 200 DEG C, oxygen content
The air of 90% and silicon dioxide, when shortage of heat in melting pond, need to by fuel inlet 110 to
Melting sprays into coal dust in pond, by the combustion heat of coal dust, to improve the temperature in melting pond, then carries out
Form thick nickel after step S4 blowing sulfonium, and then after the refine of step S5, gold, silver are enriched in sun
In the mud of pole, gold and silver recoveries is 98%.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. made, should be included in
Within protection scope of the present invention.
Claims (10)
1. trapping a device for noble metal in low grade noble metal raw material, including refinery unit, it is special
Levy and be: also include that reaction member, described reaction member include:
(1) at the bottom of tower, is provided with barricade (2) in (1) at the bottom of described tower, this barricade (2) is by the bottom of described tower
(1) in being divided into melting pond (11) and blowing pond (12), described melting pond (11), edge is from the top down
Direction be divided into melting slag blanket district (111) and matte layer district (112), described barricade (2) company of being provided with
Circulation passage (21), described communicating passage (21) is by described melting pond (11) and described blowing pond (12)
Connection, is divided into blowing slag blanket district (121) and slightly in described blowing pond (12) along direction from the top down
Metal level district (122), the top of described melting slag blanket district (111) and blowing slag blanket district (121) is even
Logical, described blowing pond (12) is in the sidewall of described crude metal floor district (122) and is provided with some second
Feed introduction (5)；
Reaction tower (3), limits reaction chamber (31), described reaction chamber (31) in described reaction tower (3)
Bottom connect with described melting pond (11), its top is provided with several the first feed introduction (4)；
Flue (6), the bottom of described flue (6) connects with described blowing pond (12).
The device of noble metal in trapping low grade noble metal raw material the most according to claim 1, its
It is characterised by: the upper surface of described communicating passage (21) is positioned at described melting slag blanket district (111) and institute
State the interfacial lower section in matte layer district (112).
The device of noble metal in trapping low grade noble metal raw material the most according to claim 1, its
It is characterised by: described second feed introduction (5) is uniformly arranged along the circumference of described blowing pond (12), institute
The sidewall stating melting pond (11) is provided with some fuel inlets (110).
The device of noble metal in trapping low grade noble metal raw material the most according to claim 1, its
It is characterised by: after described flue (6), be provided with waste heat boiler (7), entering of described waste heat boiler (7)
Mouthful with the outlet of described flue (6).
The device of noble metal in trapping low grade noble metal raw material the most according to claim 1, its
It is characterised by: described melting pond (11) is positioned at described melting slag blanket district (111) place and is provided with smelting slag and goes out
Mouth (8), described smelting slag outlet (8) connects with described melting slag blanket district (111).
The device of noble metal in trapping low grade noble metal raw material the most according to claim 1 or 5,
It is characterized in that: described blowing pond (12) is positioned at described blowing slag blanket district (121) place and is provided with blowing slag
Outlet (9), described blowing slag outlet (9) connect with described blowing slag blanket district (121), described in blow
Refining pond (12) is positioned at described crude metal floor district (122) place and is provided with crude metal outlet (10), described thick gold
Belong to outlet (10) to connect with described crude metal floor district (122).
7. noble metal in the trapping low grade noble metal raw material utilized as described in claim 1-6
The method of device, it is characterised in that: comprise the following steps:
S1: Feedstock treating: raw material includes low grade noble metal raw material, base metal sulfide concentrate and flux,
Raw material is dried process, and is ground into powdery；
S2: space melting: by several first feed introduction (4) described, to described reaction chamber (31)
Inside spray into raw material, oxidant and sludging flux, space melting oxidation occurs in described reaction chamber (31)
Reaction, the gas that oxidation reaction produces enters in described flue (6)；
S3: slag making precipitates and shunts: the product produced in described reaction chamber (31) enters described
In (1) at the bottom of tower, in described melting pond (11), Oxide and sulfide reacts to each other, and generates sulfonium,
Meanwhile, iron oxides and sludging flux generation slag making reaction form smelting slag, and smelting slag and sulfonium are after precipitation
Layering, is described melting slag blanket district (111) and matte layer district (112), the gas that above-mentioned reaction produces
Entering described flue (6), the sulfonium in described matte layer district (112) enters described through communicating passage (21)
Blowing pond (12)；
S4: blowing sulfonium: spray into oxidation in described blowing pond (12) by the second feed introduction (5)
Property gas and sludging flux, make FeS be oxidized to FeO, FeO and react shape with sludging flux generation slag making again
Becoming blowing slag, meanwhile, the sulfonium in described matte layer district (112) is oxidized to crude metal by oxidizing gas,
Blowing slag is layered after precipitation with crude metal, is described blowing slag blanket district (121) and described crude metal
Floor district (122), the gas that blowing produces enters described flue (6)；
S5: refine: by crude metal after described crude metal outlet 10 discharge, by refining furnace refine and
Electrorefining operation, by concentration of precious metal in the earth of positive pole.
Method the most according to claim 7, it is characterised in that: produce in described step S3 is molten
After refining slag is discharged by smelting slag outlet (8), first carry out ore dressing process, be classified as concentrate and tailings,
Then being reclaimed by concentrate, repetition step S1 is to step S5, in described step S3 and step S4
After the gas that reaction produces enters described flue (6), first pass through described waste heat boiler (7) by its heat
Reclaim, then by the sulfur recovery in gas.
Method the most according to claim 7, it is characterised in that: described low grade noble metal raw material
In noble metal include gold, silver and platinum family element, described base metal sulfide concentrate be copper concentrate, lead essence
Ore deposit, nickel sulfide concentrate.
Method the most according to claim 7, it is characterised in that: described oxidant is normal air
Or oxygen-enriched air or purity oxygen.
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| CN108342589A (en) * | 2018-02-25 | 2018-07-31 | 中南大学 | A kind of method of the hot supplying lead smelting system bottom blowing reduction furnace of high-Arsen gold ore calcining |
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| US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
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| CN108342590A (en) * | 2018-02-25 | 2018-07-31 | 中南大学 | A kind of method of the hot supplying lead smelting system side-blown reduction stove of high-Arsen gold ore calcining |
| CN108342589B (en) * | 2018-02-25 | 2020-06-02 | 中南大学 | Method for feeding high-arsenic gold ore calcine into bottom-blowing reduction furnace of lead smelting system in thermal state |
| CN110157917A (en) * | 2019-06-27 | 2019-08-23 | 上海环境工程设计研究院有限公司 | Metal solid waste cooperates with melting continuously device with organic liquid waste |
| US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
| US11578386B2 (en) | 2020-08-18 | 2023-02-14 | Enviro Metals, LLC | Metal refinement |
| CN112226619A (en) * | 2020-09-28 | 2021-01-15 | 西安建筑科技大学 | Method for collecting gold and silver in cyaniding slag through sulfonium making smelting |
| CN114150162A (en) * | 2022-02-10 | 2022-03-08 | 中国恩菲工程技术有限公司 | Continuous copper smelting process and continuous copper smelting equipment for treating complex gold concentrate |
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