CN101736161B - Method for comprehensively recovering tin smelting secondary raw materials by melting in DC furnace - Google Patents
Method for comprehensively recovering tin smelting secondary raw materials by melting in DC furnace Download PDFInfo
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- CN101736161B CN101736161B CN2010100391609A CN201010039160A CN101736161B CN 101736161 B CN101736161 B CN 101736161B CN 2010100391609 A CN2010100391609 A CN 2010100391609A CN 201010039160 A CN201010039160 A CN 201010039160A CN 101736161 B CN101736161 B CN 101736161B
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Abstract
The invention relates to a method for comprehensive recovery and utilization of tin smelting secondary raw materials, in particular to a method for comprehensively recovering valuable metals from tin smelting secondary raw materials by melting in a DC furnace. The method comprises the following steps of: putting the secondary raw materials generated in tin smelting in the DC furnace, adding a vulcanizing agent, a reducing agent and a fluxing agent into the DC furnace for melting to obtain copper matte or nickel matte and pig iron products; and recovering the tin by sulfiding volatilization in a mode of tin oxide dust, and the copper and nickel are recovered in a mode of copper matte or nickel matte, wherein the slag can be used as building materials after water quenching. The method has the advantages of effectively recovering and utilizing the tin smelting secondary raw materials, further recovering the tin metal in waste slag, improving the total recovery of the tin in the tin smelting, and comprehensively recovering the valuable elements such as iron, copper, nickel, noble metals and the like in the raw materials. The used DC furnace has the advantages of strong adaptability, short flow and easy operation.
Description
Technical field
The present invention relates to tin and smelt the method for secondary raw material comprehensive reutilization, be specifically related to a kind of method with valuable metal in the comprehensively recovering tin smelting secondary raw materials by melting in DC furnace.
Background technology
Tin is mostly with iron densification adhesion, associated metal is many, comprehensive utilization value is high.Tin concentrate iron content through the ore dressing output is all higher, and generally greater than 10%, iron is most of slag making in the retailoring process, and a part generates tin iron alloy (being hardhead).In " tin concentrate retailoring-thick tin pyrorefining-Xi slag fuming stove sulfiding volatilization " classical tin metallurgy flow process, fuming furnace tin sulfiding volatilization rate is 96～98% usually, also has 2～4% the tin can not economic recovery, and its slag is all taked to skim after the shrend.Fuming furnace is thrown the slag iron content all more than 35%, and stanniferous 0.08～0.2% also has no the new technology can this resource of economic utilization at present, abandons or stores up all and can cause certain harm to environment.In addition, produce other secondary raw materials, as add sulphur and remove slag in the middle of copper ashes, the hardhead etc., also fail efficient recovery and utilization in the tin smelting process.
Summary of the invention
The object of the present invention is to provide a kind of tin to smelt the method for secondary raw material comprehensive reutilization; Can efficient recovery with utilize tin to smelt secondary raw material; Further reclaim and abandon the tin in the slag; Improve tin and smelt the total yield of tin, and can comprehensively reclaim valuable elements such as the contained iron of raw material, copper, nickel and precious metal.
Realize that the technical scheme that the above-mentioned order of the present invention is taked is: the secondary raw material of output was put into direct current furnace during tin was smelted; Allocate vulcanizing agent, reductive agent and flux into and carry out melting; Output matte or ice nickel and cast iron product; Tin reclaims through sulfiding volatilization and with White tin oxide flue dust form, and copper, nickel reclaim with matte or ice nickel form, are used as the building materials raw material behind the furnace slag granulating.
Described tin metallurgical slag is directly to get into direct current furnace retailoring with high-temperature liquid state or powder-form.
Get in the direct current furnace fusion process at secondary raw material, smelting temperature is 1350～1600 ℃; Add the nut coke reductive agent that accounts for raw material weight 15～40%, granularity 20～40mm; The vulcanizing agent that adds is a sulfurous iron ore, accounts for raw material weight 2～20%; The flux that adds is lime or fluorite, accounts for raw material weight 5～30%.
The present invention has advantage and effect:
1. can be used for handling the stanniferous material that tin is smelted the various forms (like pulverulent material) that abandons in the flow process, throw slag, add sulphur, be adapted to handle fuming furnace especially and throw slag except that copper ashes, hardhead like fuming furnace.
2. adopt present method not only can further reclaim the tin that abandons in the slag, improve the total yield that tin is smelted tin, and can comprehensively reclaim valuable elements such as the contained iron of raw material, copper, nickel and precious metal; As when being used to handle the fuming slag, the evaporation rate of tin is greater than 80%, and the recovery of iron is greater than 90%; The final slag iron content of throwing is lower; With quicklime, silicon oxide, aluminum oxide is main, and can be used as is the high quality raw material of building materials, belongs to the environmental protection technology of developing a circular economy.
3. the direct current furnace that the inventive method adopted, apparatus adaptability is strong, and flow process is short, simple to operate, and sound pollution is little, exhaust gas volumn is little, and the flue gas treatment facility is simple, and floor space is little, and reduced investment adopts technology of the present invention can produce good social and economic benefit.
Description of drawings
Fig. 1 is a principle process flow sheet of the present invention.
Embodiment
Embodiment 1: step is following:
The tin fuming furnace dreg chemistry composition such as the following table of A, employing:
| Element | Sn | Fe | Al 2O 3 | SiO 2 | CaO |
| Content % | 0.2 | 35 | 4 | 28 | 1 |
The direct current furnace of B, employing 600KVA carries out the thermal slag in the melting steps A; Add the nut coke that accounts for weight of material 20% granularity 20～40mm, the lime that adding accounts for weight of material 20% in the process, control voltage 150～250V, electric current 2000～4000A, smelting time 6 hours; 1350～1600 ℃ of smelting temperatures; The output pig iron contains Fe 93%, and slag contains Sn0.04%, FeO 2%, CaO 40%, SiO2 45%, Al2O3 4%, the ferrous metal recovery 92%; Tin evaporation rate 90%, power consumption 600 degree/tons are gone into furnace charge.
Embodiment 2 steps are following:
The first step is identical with instance 1 steps A.
The direct current furnace of B, employing 1250KVA carries out the thermal slag in the melting steps A; Add the nut coke that accounts for weight of material 20% granularity 20～40mm in the process and add the lime that accounts for weight of material 20%, control voltage 150～250V, electric current 5000～8000A, smelting time 5 hours; 1350～1600 ℃ of smelting temperatures; The output pig iron contains Fe 94%, and slag contains Sn0.06%, FeO 3%, CaO 38%, SiO2 50%, Al2O3 4%, the ferrous metal recovery 90%; Tin evaporation rate 92%, power consumption 550 degree/tons are gone into furnace charge.
Embodiment 3: step is following:
The tin of A, employing is smelted secondary dreg chemistry composition such as following table:
| Element | Sn | Fe | Al 2O 3 | SiO 2 | CaO | Cu |
| Content % | 4 | 30 | 4 | 25 | 4 | 2 |
The direct current furnace of B, employing 600KVA carries out thermal slag or cold conditions material in the melting steps A; Add the sulfurous iron ore that the nut coke, the adding that account for weight of material 20% granularity 20～40mm account for the lime of weight of material 20% and account for weight of material 5% in the process; Control voltage 150～250V, electric current 2000～4000A; Smelting time 8 hours, 1350～1600 ℃ of smelting temperatures, the output pig iron contains Fe 93%; Matte contains the material of Cu 25%, Fe 30%, Sn 4%, and slag contains Sn0.2%, FeO 2%, CaO 35%, SiO
250%, Al
2O
34%, the ferrous metal recovery 88%, copper recovery 95%, tin evaporation rate 85%, power consumption 800 degree/tons are gone into furnace charge.
Claims (2)
1. method with comprehensively recovering tin smelting secondary raw materials by melting in DC furnace is characterized in that method steps is: tin is smelted secondary raw material, and promptly fuming furnace is thrown slag, is added sulphur and remove copper ashes, hardhead; Put into direct current furnace; Allocate the vulcanizing agent that accounts for raw material weight 2～20% sulfurous iron ore into, the nut coke that accounts for raw material weight 15～40%, granularity 20～40mm is that reductive agent and the lime that accounts for raw material weight 5～30% or fluorite are that flux carries out melting, and smelting temperature is 1350～1600 ℃; Output matte or ice nickel and cast iron product; Tin reclaims through sulfiding volatilization and with White tin oxide flue dust form, and copper, nickel reclaim with matte and ice nickel form respectively, are used as the building materials raw material behind the furnace slag granulating.
2. the method with comprehensively recovering tin smelting secondary raw materials by melting in DC furnace according to claim 1 is characterized in that: tin is smelted secondary raw material and is directly got into direct current furnace retailoring with high-temperature liquid state or powder-form.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010100391609A CN101736161B (en) | 2010-01-13 | 2010-01-13 | Method for comprehensively recovering tin smelting secondary raw materials by melting in DC furnace |
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| CN2010100391609A CN101736161B (en) | 2010-01-13 | 2010-01-13 | Method for comprehensively recovering tin smelting secondary raw materials by melting in DC furnace |
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| CN101736161A CN101736161A (en) | 2010-06-16 |
| CN101736161B true CN101736161B (en) | 2012-07-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088181A (en) * | 2013-01-18 | 2013-05-08 | 昆明理工大学 | Method for obtaining sponge iron by treating high-iron low-tin ore by sulfurizing volatilization direct-reduction process |
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| CN102534071A (en) * | 2012-03-22 | 2012-07-04 | 韶关市腾兴实业有限公司 | Device for producing metal component by electric furnace steel-making slag and process thereof |
| CN102925702B (en) * | 2012-11-14 | 2014-11-26 | 江西自立环保科技有限公司 | Process for recovering copper and zinc and tin and lead by utilizing side blown converter at the bottom |
| CN103060571B (en) * | 2013-01-21 | 2014-03-26 | 北京科技大学 | Method for recovering lead and tin in silver separating residue of copper anode mud of circuit board by pyrogenic process |
| CN103614572A (en) * | 2013-09-12 | 2014-03-05 | 昆明理工大学 | Method for sulfuration volatilization of tin-containing materials by utilization of high-sulfur coal dust |
| CN103614555B (en) * | 2013-09-12 | 2016-01-13 | 昆明理工大学 | A kind of method of nickel tin iron alloy waste material high efficiency separation enrichment tin |
| CN103540771A (en) * | 2013-10-15 | 2014-01-29 | 昆明理工大学 | Method used for high efficient separation and enrichment of tin from nickel-tin-iron alloy waste material |
| 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 |
| CN105861854A (en) * | 2015-01-23 | 2016-08-17 | 重庆宇立金属制品有限公司 | Pyrogenic process for separation of tin in nickel-iron alloy scrap |
| CN106834738B (en) * | 2017-03-15 | 2019-06-14 | 中南大学 | A kind of compound additive and application for copper smelting slag recycling copper |
| CN109852818A (en) * | 2019-04-02 | 2019-06-07 | 柳州光华科技有限公司 | A kind of continuous side-blown tin-making process |
| CN113667836A (en) * | 2021-07-08 | 2021-11-19 | 赤峰大井子矿业有限公司 | Tin smelting method capable of realizing valuable metal recovery |
| CN113774233A (en) * | 2021-10-09 | 2021-12-10 | 昆明理工大学 | Tin smelting intermediate material processing system and processing method thereof |
| CN114196828B (en) * | 2021-10-29 | 2023-04-28 | 昆明理工大学 | FeO-SiO based on high FeO content 2 Method for vulcanizing and volatilizing tin-containing material of CaO ternary system slag |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076495A (en) * | 1992-03-16 | 1993-09-22 | 昆明冶金研究所 | Melting bath smelting-continuous fusion process and equipment |
| CN1093756A (en) * | 1994-03-05 | 1994-10-19 | 邓小昌 | From copper slag, reclaim the method for metals such as tin, copper, lead, zinc |
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2010
- 2010-01-13 CN CN2010100391609A patent/CN101736161B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076495A (en) * | 1992-03-16 | 1993-09-22 | 昆明冶金研究所 | Melting bath smelting-continuous fusion process and equipment |
| CN1093756A (en) * | 1994-03-05 | 1994-10-19 | 邓小昌 | From copper slag, reclaim the method for metals such as tin, copper, lead, zinc |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088181A (en) * | 2013-01-18 | 2013-05-08 | 昆明理工大学 | Method for obtaining sponge iron by treating high-iron low-tin ore by sulfurizing volatilization direct-reduction process |
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