CN106929692B - A kind of energy-efficient tin metallurgy equipment and its application process on the double molten tin inclined-planes of band - Google Patents
A kind of energy-efficient tin metallurgy equipment and its application process on the double molten tin inclined-planes of band Download PDFInfo
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- CN106929692B CN106929692B CN201611152197.6A CN201611152197A CN106929692B CN 106929692 B CN106929692 B CN 106929692B CN 201611152197 A CN201611152197 A CN 201611152197A CN 106929692 B CN106929692 B CN 106929692B
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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
- C22B25/00—Obtaining tin
- C22B25/02—Obtaining tin by dry processes
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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
- C22B25/00—Obtaining tin
- C22B25/06—Obtaining tin from scrap, especially tin 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
- C22B25/00—Obtaining tin
- C22B25/08—Refining
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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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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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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- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The present invention relates to the energy-efficient tin metallurgy equipment and its application process on a kind of double molten tin inclined-planes of band；Belong to technical field of non-ferrous metallurgy.Equipment of the present invention；Including rotary kiln 1, electric furnace 2, flue gas recovery device 3, refining furnace 4, crystallizer 5, liquation hearth 7；The electric furnace 2 includes stannum export 21, the first molten tin inclined-plane 22, the second molten tin inclined-plane 23, and the stannum export 21 is located at the intersection on 22 and second molten tin inclined-plane 23 of the first molten tin inclined-plane；The length ratio on the 22 and second molten tin inclined-plane 23 of the first molten tin inclined-plane is 3-5:1；The crystallizer 5 contains tin end, into tin end and resistance wire, successively decreases successively along the distribution density for going out tin end to the direction resistance wire into tin end in the crystallizer 5.Use the equipment designed by the present invention, with environmental protection and energy saving, the advantages such as economic benefit is excellent.The equipment is convenient for large-scale industrialization application.
Description
Technical field
The present invention relates to the energy-efficient tin metallurgy equipment and its application process on a kind of double molten tin inclined-planes of band；Belong to nonferrous metallurgy
Technical field.
Background technology
The technology of tin metallurgy has Tin concentrate reverberatory smelting technique, electro-smelting technique, Ausmelt smelting technologies, blast furnace
Smelting technology, rotary furnace smelting technique, Kaldo Furnace tin-making process.Rotary furnace smelting technique system is interrupted smelting process because investing, managing
It is big with maintenance cost height, exhaust gas volumn, and fluctuation is also big, and direct yield is low to be eliminated already.Kaldo Furnace is tiltedly to blow rotating furnace type
Device structure is complicated, and maintenance cost is high, and the stove longevity is short, and refractory consumption rate is big.The shortcomings that electric furnace tin-smelting, power consumption was too high, was only suitable for locating
Manage low iron material and the abundant area of electric power；Blast furnace smelting process requires material to need granulation or briquetting, consumes expensive smelting
The shortcomings of golden coke, furnace atmosphere are difficult to control, and the volatility of tin is high, has not used.Ausmelt meltings, which belong to, strengthens bath smelting
Technology, segmentation operation, slag is stanniferous to be down to reduced levels, but invests big, maintenance cost height, and complicated for operation.Tin concentrate reflects
Stove smelting technology due to the low low production efficiency of its ability, the thermal efficiency is low, fuel consumption is big, labor intensity is big the shortcomings of.For
Defect existing for Tin concentrate reverberatory smelting technique, people have done the bottom introduced in 104152716 A of a large amount of trials such as patent CN
Blown converter and the smelting process mating with it, but this method is due to being directed to Tin concentrate；The technique is caused to directly apply to useless
Scruff there is a problem of certain when smelting.
Invention content
The problem of inventor is difficult to smelt for useless scruff has done a series of trial, such as redesigns electric furnace, the electric furnace
For reverberatory furnace, since the stove uses unidirectional inclined design, and stannum export is located at the lowest part of inclined surface, causes to go out every time equal when tin
A large amount of oxygenating is needed, leads to problems such as slow tin speed, high energy consumption, labor intensity big；The fume amount that useless scruff generates simultaneously is remote
Flue dust produced by being smelted much larger than concentrate tin, causes its working environment more severe；Simultaneously because causing to use existing continuous knot
Brilliant machine causes product to be stabilized certain problem.
Inventor devises technical scheme of the present invention after many experiments and theoretical calculation.And it achieves unexpected
Effect.
A kind of energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention；It is returned including rotary kiln (1), electric furnace (2), flue gas
Receiving apparatus (3), refining furnace (4), crystallizer (5)；
The electric furnace (2) includes stannum export (21), the first molten tin inclined-plane (22), the second molten tin inclined-plane (23), it is described go out tin
Mouth (21) is located at the intersection of the first molten tin inclined-plane (22) and the second molten tin inclined-plane (23)；The first molten tin inclined-plane (22) and the
The length ratio of two molten tin inclined-planes (23) is 3-5:1, it is preferably 4:1；The highest point of the first molten tin inclined-plane (22) and second melts
The highest point on tin inclined-plane is in the same plane；
The crystallizer (5) contains tin end, into tin end and resistance wire, and the middle edge of the crystallizer (5) goes out tin end extremely into tin
The distribution density of the direction resistance wire at end is successively decreased successively；
Flue gas recovery device (3) is made of bagroom and expansion chamber (6) and pipeline.
A kind of energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention；Described, rotary kiln (1), electric furnace (2), refining
Flue gas produced by stove (4) is settled after the sucking of the air inlet of flue gas recovery device (3) into expansion chamber (6), is remained after sedimentation
Remaining flue gas, which enters, carries out further dedusting in cloth bag dust catcher.
Preferably, a kind of energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention；The first molten tin inclined-plane
(22) inclination angle is 3-30 °, preferably 3-10 °.
As a further preference, the energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of a kind of band of the present invention；First molten tin is oblique
The length in face (22) is 2.4m.The length of second molten tin inclined-plane (23) is 0.6m.The highest point of the first molten tin inclined-plane (22)
It is in the same plane with the highest point of the second molten tin inclined-plane (23)；And the distance apart from ground is 65cm.The stannum export
(21) it is 28-35cm apart from the distance on ground.
A kind of energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention；The electric furnace is reverberatory furnace.
A kind of energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention；Further include liquation hearth (7).
A kind of energy-efficient tin metallurgy equipment of the present invention；The volume of expansion chamber is 0.8-2 times of preferably 0.8- of electric furnace volume
1.2 again；The height of expansion chamber is 1.05-2 times of electric furnace height.
A kind of application of the energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention, includes the following steps：
Step 1
Using useless scruff as raw material, useless scruff is added in rotary kiln and carries out drying and processing in (1)；The temperature of the rotary kiln
It is 350-800 DEG C；Siccative and flue dust are obtained, flue dust is sent into flue gas recovery device (3) through pipeline
Step 2
Siccative obtained by step 1 is sent into after lime stone, river sand dispensing in electric furnace (2), smelting is carried out at 1500-1700 DEG C
Refining, obtains No. 1 product and flue dust；No. 1 product is released through stannum export (21)；The ingredient for analyzing No. 1 product, when product is first
When tin, then it is sent into refining furnace (4) and is smelted；When product is second tin, then it is sent into liquation hearth (7) and is smelted, until
Obtain first tin；The mass percentage of tin is more than or equal to 95.8% in the first tin；The smelting temperature of the refining furnace is 230-
430℃；The smelting temperature of the liquation hearth (7) is 600-800 DEG C；
Step 3
It carries out smelting in refining furnace (4) and be handled in products obtained therefrom feeding crystallizer (5)；The crystallizer (5) is into tin
It is 510-530 DEG C that the temperature at end, which is 183-220 DEG C, goes out the temperature at tin end；
Step 4
The tin liquor that crystallizer (5) is gone out to tin end carries out ingot casting, obtains product.
A kind of application of the energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention, useless scruff is is purchased useless tin on the market
Slag.
A kind of application of the energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention, liquation hearth (7) gained waste residue conduct
Raw material is added electric furnace (2) after being mixed with siccative obtained by rotary kiln and is smelted.
A kind of application of energy-efficient tin metallurgy equipment of the present invention, in electric furnace, high price tin is reduced into zeroth order tin.And form tin
Liquid.
A kind of application of the energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention, when electric furnace (2) is smelted, control
Slag is alkalinity or neutral slag.When using lime stone, river sand dispensing, the group as analyzing waste residue obtained by siccative and/or liquation hearth (7)
Point after, be added suitable lime stone, river sand so that control electric furnace (2) smelted gained slag be basic slag or neutral slag.
A kind of application of the energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention, first tin carry out in refining furnace (4)
When smelting, sawdust, sulphur, aluminium, ammonium chloride are sequentially added；Its addition is 1.0-1.1 times of theoretical amount.Sawdust, which is added, to be removed
Iron, lead, arsenic；Sulphur is added can copper removal；Aluminium, which is added, can remove arsenic, antimony, and ammonium chloride is added and removes aluminium；The theoretical amount is except dry
The net impurity needs the dosage of the material.
In order to further enhance the quality of product, first first tin is added in vacuum drying oven and is smelted, after vacuum drying oven smelting again
It is sent into crystallizer and is crystallized；The temperature that the vacuum drying oven is smelted is 1200-1400 DEG C, vacuum degree 66.7-6.67Pa.
A kind of application of the energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band of the present invention, settles obtained solid substance and cloth
Substance in bag dust catcher can be used as raw material, be smelted.
Advantage
Electric furnace used in the A present invention can be lifted out greatly tin efficiency, avoid every time go out tin when be both needed to a large amount of oxygenating, cause
The appearance for the problems such as tin speed is slow, high energy consumption, big labor intensity, to mitigate the working strength of worker and improve economic effect
Benefit；
B can greatly improve the high-quality of production capacity and gained finished product using the crystallizer that successively decreases successively of distribution density of resistance wire
Rate.
In short, synergistic effect of the present invention by each component and each conditional parameter, while environmental protection and energy saving, greatly
It alleviates the labor intensity of worker and creates considerable economic benefit.After fume collector using the present invention, flue dust row
It high-volume reduces to original 1/5.
Description of the drawings
Attached drawing 1 is the structural schematic diagram of electric furnace used in embodiment 1；
Attached drawing 2 is crystallizer resistance wire distribution schematic diagram used in embodiment 1；
Attached drawing 3 is 1 device therefor connection figure of embodiment；
Attached drawing 4 is the structural schematic diagram of electric furnace used in comparative example 1.
Wherein
1 it is rotary kiln, 2 be electric furnace, 3 be flue gas recovery device, 4 be refining furnace, 5 is crystallizer；21 go out tin for electric furnace
Mouthful, 22 be the first molten tin inclined-plane of electric furnace, 23 be electric furnace the second molten tin inclined-plane, 6 be expansion chamber, 7 be liquation hearth.
Specific implementation mode
Embodiment 1
It is obtained the present embodiment with assembling equipment as designed by Fig. 1-Fig. 3 and smelts required equipment；
The stannum export 21 is located at the intersection on 22 and second molten tin inclined-plane 23 of the first molten tin inclined-plane；The first molten tin is oblique
The length ratio on face 22 and the second molten tin inclined-plane 23 is 4:1；The highest point on the first molten tin inclined-plane 22 and the second molten tin inclined-plane
Highest point is in the same plane；
Using useless scruff as raw material；The constituent analysis of the useless scruff is Sn, Fe, Sio2, Ca；Its smelting process is as follows：
Step 1
Using useless scruff as raw material, useless scruff is added in 1 in rotary kiln and carries out drying and processing；The temperature of the rotary kiln is
500℃；Siccative and flue dust are obtained, flue dust is sent into flue gas recovery device 3 through pipeline；
Step 2
By every hundred kilograms of siccatives with 10 kilograms of lime stones, 5 kilograms of river sands；By siccative obtained by step 1 and lime stone, river sand
It is sent into tin melting furnace 2 after dispensing, is smelted at 1550 DEG C, obtain No. 1 product and flue dust；No. 1 product is through stannum export 21
It releases；The ingredient for analyzing No.1 product is then sent into refining furnace 4 and is smelted when product is first tin；When product is second tin
When, then it is sent into liquation hearth 7 and is smelted, until obtaining first tin；The mass percentage of tin is more than or equal in the first tin
95.8%；The smelting temperature of the refining furnace is 350-360 DEG C；The smelting temperature of the liquation hearth 7 is 700 DEG C；Tin melting furnace (2)
When being smelted, control slag is alkalinity or neutral slag；When first tin is smelted in refining furnace (4), sawdust, sulphur are sequentially added
Sulphur, aluminium, ammonium chloride；Its addition is 1.05 times of theoretical amount；
Step 3
It carries out smelting in refining furnace 4 and be handled in products obtained therefrom feeding crystallizer 5；The crystallizer (5) is into tin end
It is 510-530 DEG C that temperature, which is 201-205 DEG C, goes out the temperature at tin end；
Step 4
The tin liquor that crystallizer 5 is gone out to tin end carries out ingot casting, obtains product.
Wherein in technical solution used in embodiment 1,1 ton of product is obtained, flue dust emptying amount is only 1/4 or so of comparative example 1.
Embodiment 2
It assembles to obtain equipment needed for the present embodiment smelting by the equipment designed by Fig. 1-Fig. 3；Using useless scruff as raw material；It is described
The constituent analysis of useless scruff is Sn, Fe, Sio2, Ca；Its smelting process is as follows：
Remaining operating procedure and conditional parameter are consistent with embodiment 1；
In order to further enhance the quality of product, first first tin is added in vacuum drying oven and is smelted, after vacuum drying oven smelting again
It is sent into crystallizer and is crystallized；The temperature that the vacuum drying oven is smelted is 1300 DEG C, vacuum degree 15-25Pa.
Comparative example 1
Using electric furnace shown in Fig. 4, useless tin is carried out using the equally distributed crystallizer of existing resistance wire, using common rotary kiln
Slag melting, when conditional parameter is completely the same with the embodiment of the present invention 1, energy consumption is 1.6 times of embodiment 1；Production in unit interval
The quantity of raw high-quality finished product is only the 60% of embodiment 1.
Economic benefit caused by the embodiment of the present invention 1 is 1.9 times or so of comparative example 1；Wherein technology used in comparative example 1
For the previously used technology in our factory.
Claims (8)
1. a kind of energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band；It is characterized in that：Including rotary kiln（1）, electric furnace（2）, cigarette
Gas recovering device（3）, refining furnace（4）, crystallizer（5）；
The electric furnace（2）Including stannum export（21）, the first molten tin inclined-plane（22）, the second molten tin inclined-plane（23）, the stannum export
（21）Positioned at the first molten tin inclined-plane（22）With the second molten tin inclined-plane（23）Intersection；The first molten tin inclined-plane（22）With second
Molten tin inclined-plane（23）Length ratio be 3-5:1；The first molten tin inclined-plane（22）Highest point and the second molten tin inclined-plane highest
Locate in the same plane；
The crystallizer（5）Contain tin end, into tin end and resistance wire, the crystallizer（5）Middle edge goes out tin end extremely into tin end
The distribution density of direction resistance wire is successively decreased successively；
Flue gas recovery device（3）By bagroom and expansion chamber（6）And pipeline composition.
2. a kind of energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band according to claim 1；It is characterized in that：Described time
Rotary kiln（1）, electric furnace（2）, refining furnace（4）Produced flue gas is through flue gas recovery device（3）Air inlet sucking after enter expansion chamber
（6）It is settled, remaining flue gas, which enters, after sedimentation carries out further dedusting in cloth bag dust catcher.
3. a kind of energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band according to claim 1；It is characterized in that：Described
One molten tin inclined-plane（22）Inclination angle be 3-30 °.
4. a kind of energy-efficient tin metallurgy equipment according to claim 1；It is characterized in that：First molten tin inclined-plane（22）Length
Degree is 2.4m；Second molten tin inclined-plane（23）Length be 0.6m.
5. a kind of energy-efficient tin metallurgy equipment according to claim 1；It is characterized in that：The first molten tin inclined-plane（22）
Highest point and the second molten tin inclined-plane（23）Highest point it is in the same plane；And the distance apart from ground is 65cm；It is described
Stannum export（21）Distance apart from ground is 28-35cm.
6. a kind of application side of the energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band a kind of as described in claim 1-5 any one
Method, it is characterised in that include the following steps：
Step 1
Using useless scruff as raw material, useless scruff is added in rotary kiln（1）Interior carry out drying and processing；The temperature of the rotary kiln is
350-800℃；Siccative and flue dust are obtained, flue dust is sent into flue gas recovery device through pipeline（3）；
Step 2
It will be sent into electric furnace after siccative obtained by step 1 and lime stone, river sand dispensing（2）In, it is smelted, is obtained at 1500-1700 DEG C
To No. 1 product and flue dust；No. 1 product is through stannum export（21）It releases；The ingredient for analyzing No. 1 product, when product is first tin,
Then it is sent into refining furnace（4）Inside smelted；When product is second tin, then liquation hearth is sent into（7）It is inside smelted, until obtaining first
Tin；The mass percentage of tin is more than or equal to 95.8% in the first tin；The smelting temperature of the refining furnace is 230-430 DEG C；Institute
State liquation hearth（7）Smelting temperature be 600-800 DEG C；
Step 3
Refining furnace（4）It inside carries out smelting products obtained therefrom feeding crystallizer（5）Inside handled；The crystallizer（5）Into tin end
It is 510-530 DEG C that temperature, which is 183-220 DEG C, goes out the temperature at tin end；
Step 4
By crystallizer（5）The tin liquor for going out tin end carries out ingot casting, obtains product.
7. a kind of application process of the energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band according to claim 6, feature
It is：Liquation hearth（7）Electric furnace is added after being mixed with siccative obtained by rotary kiln as raw material in gained waste residue（2）It is smelted.
8. a kind of application process of the energy-efficient tin metallurgy equipment on the double molten tin inclined-planes of band according to claim 7, feature
It is：First first tin is added in vacuum drying oven and is smelted, vacuum drying oven is re-fed into crystallizer after smelting and is crystallized；The vacuum
Stove smelt temperature be 1200-1400 DEG C, vacuum degree 66.7-6.67Pa.
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| CN201611152197.6A CN106929692B (en) | 2016-12-14 | 2016-12-14 | A kind of energy-efficient tin metallurgy equipment and its application process on the double molten tin inclined-planes of band |
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| CN201611152197.6A CN106929692B (en) | 2016-12-14 | 2016-12-14 | A kind of energy-efficient tin metallurgy equipment and its application process on the double molten tin inclined-planes of band |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62270735A (en) * | 1986-05-19 | 1987-11-25 | Nippon Mining Co Ltd | Recovering method for tin |
| JP2546925B2 (en) * | 1991-02-18 | 1996-10-23 | 新日本製鐵株式会社 | Row of tin separators for scrap tinned steel |
| CN102965522B (en) * | 2012-11-13 | 2014-06-04 | 中南大学 | Method for separating and recovering tin from tin-containing mill tailings |
| CN104099481B (en) * | 2013-04-29 | 2015-12-09 | 成都易态科技有限公司 | High-temperature dust-containing flue gas purification process in tin smelting and specific equipment row |
| CN103725900B (en) * | 2013-12-27 | 2015-06-17 | 灌阳县贵达有色金属有限公司 | Method for removing arsenic and sulfur from tin concentrate |
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