CN101121965A - Technique for reclaiming tin by fuming furnace vulcanization and volatilization - Google Patents
Technique for reclaiming tin by fuming furnace vulcanization and volatilization Download PDFInfo
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- CN101121965A CN101121965A CNA2007100662257A CN200710066225A CN101121965A CN 101121965 A CN101121965 A CN 101121965A CN A2007100662257 A CNA2007100662257 A CN A2007100662257A CN 200710066225 A CN200710066225 A CN 200710066225A CN 101121965 A CN101121965 A CN 101121965A
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- fuming furnace
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Abstract
A novel technology relates to a method of sulfurizing, volatilizing and recycling stannum in a fuming furnace. The invention relates to a metallurgy technology of nonferrous metals, in particular to a technology that sulfurizes, volatilizes and processes low-grade stannum material in the fuming furnace, carries out secondary oxidation, and recycles tin dioxide fume. The technical proposal of the invention is that to a waste heat boiler is arranged in the flue system of the fuming furnace for recycling heat, and the follow-up dust collector is a dry cloth screen. The technology has advantages that the recovery ratio of stannum is high, and the heat during the recovery can be fully released and used, as a result, the temperature of the follow-up dry dust collection is reduced significantly and no any industrial sewage is produced.
Description
Technical field
The present invention relates to nonferrous metallurgy process technology, be specifically related to adopt fuming furnace sulfiding volatilization to handle low-grade tin material, secondary oxidation, the technology of recovery tindioxide flue dust.
Background technology
The thirties in 20th century, just the someone has proposed the theory of sulfiding volatilization concentration of valuable metals.1954, the Soviet Union adopted ripple Dorr Si Ke smeltery the success of fuming furnace sulfiding volatilization art breading tin metallurgy lean slag first.Fuming furnace sulfiding volatilization technology can reclaim the valuable metal in the low-grade material effectively.Fuming furnace is handled low-grade tin material, and the tin in the slag of the stanniferous 1～3% that the past can be abandoned as waste residue volatilizees effectively with the form of stannous sulfide, also can make tin in the low-grade medium tin ore with same method volatilization.These evaporable stannous sulfides are with flow of flue gas, are granules of stannic oxide through oxidation conversion, by sedimentation and collection, can obtain the stanniferous grade and reach tindioxide flue dust more than 50%.
Normally used is the tin fuming furnace, and the stannous sulfide of sulfiding volatilization is to change oxide compound into by natural oxidation in flue system, collects through dust-precipitator again.The natural oxidation of stannous sulfide in flue prolonged the passage of oxidation, and the heat that makes oxidation discharge is difficult to concentrate effectively and reclaims, sometimes even can concentrate oxidation to produce at the dust-precipitator place to explode, cause very big safety problem.
Traditional tin fuming furnace dust collecting system all adopts dust precipitator, does not establish waste heat apparatus on flue system, makes waste heat can not get reclaiming.And, the ratio resistance that improves flue dust in dust precipitator, can obtain efficient recovery for being beneficial to flue dust, sprinkling system also must be set before dust precipitator increase smoke moisture, this system entails produces harmful industrial waste water, must handle and to utilize again or to discharge, so its cost is higher.
Summary of the invention
Technical problem to be solved by this invention provides a kind of novel process of reclaiming tin by fuming furnace vulcanization and volatilization, and the total yield height of tin, heat can fully discharge and obtain to utilize, and make the temperature of follow-up dry dust collection reduce significantly, do not produce industrial sewage simultaneously.
The scheme that technical problem adopted that solves invention is: waste heat boiler is set on the flue system of fuming furnace reclaims heat, follow-up dust arrester installation adopts the dry bag-type dust-precipitator.
Technical scheme of the present invention is also taked: in fuming furnace, allocate vulcanizing agent into according to the stannous sulfide amount of Theoretical Calculation, make that the tin complete cure in the slag volatilizees; To between the waste heat boiler, take the secondary air blast at fuming furnace, carry out forced oxidation, make the abundant oxidation release reaction of evaporable sulfide heat, reclaim at the waste heat boiler place; The dry bag-type dust-precipitator adopts the long bag and low pulse bagroom, improves dust-collecting efficiency.
The invention has the beneficial effects as follows:
(1) heat that discharged in the oxidation before waste heat boiler of stannous sulfide reclaimed by waste heat boiler, but the energy has been saved in the production steam-electric power effectively, makes follow-up temperature of gathering dust reduce significantly simultaneously, has prevented cloth bag filtrate scaling loss;
(2) the low-grade stanniferous material of this technology suitable treatment adopts the dry bag-type dust-precipitator to reclaim the tindioxide flue dust, and dust-collecting efficiency is greater than 99%, and the total yield of tin has effectively utilized valuable tin mineral resource greater than 98%;
(3) this processing method adopts the dry bag-type dust-precipitator to reclaim the tindioxide flue dust, cancelled to the ratio resistance that improves flue dust is provided with flue gas and sprayed humidification system, do not need the water spray cooling, do not produce high arsenic sewage, utterly destroy the noxious industry waste water that this system produces, greatly improved operating environment.
(4) this processing method is owing to adopted the dry dust collection device, flue gas portion need spray humidification system, make in the stanniferous flue dust that the oxide compound of metals such as indium soluble in water in the flue dust, zinc accepted by being enriched to, just can reclaim these valuable metals effectively by certain art breading, comprehensive utilization of resources is effective;
(5) this processing method is than normally used fuming furnace, and used equipment is few and simple, reduced investment;
(6) owing to this process using bagroom, the high-voltage electric field that do not need in service, power consumption is little, and running cost is low; And traditional technology is used dust precipitator, the necessary high-voltage electric field that uses in service, and current consumption is big, and the electricity charge are higher, the running cost height.
Description of drawings
Fig. 1 is the process flow sheet of special-purpose smelting furnace of the present invention.
Embodiment
Embodiment
Referring to Fig. 1, handle in existing fuming furnace sulfiding volatilization on the basis of tin metallurgy lean slag technology, at siege (furnace bottom) area 4m
2Fuming furnace in handle the slag and the medium tin ore of stanniferous 1～3%; On the flue system after fuming furnace waste heat boiler is set, before waste heat boiler, carry out the secondary air blast, high-temperature flue gas is carried out forced oxidation, make complete oxidation in the flue system of stannous sulfide before arriving waste heat boiler, heat fully discharges, and obtain recycling at waste heat boiler, the waste heat of recovery can be used for generating.The high temperature of dust-laden adopts the flue dust of long bag and low pulse bagroom collection based on tindioxide through in the waste heat boiler cooling, delivers to the melting operation of tin, and the waste gas of sulfur-bearing then is recovered, and discharges after the desulfurization.
Claims (2)
1. the novel process of a reclaiming tin by fuming furnace vulcanization and volatilization is characterized in that: on the flue system of fuming furnace waste heat boiler is set and reclaims heat, follow-up dust arrester installation employing dry bag-type dust-precipitator.
2. the novel process of the described reclaiming tin by fuming furnace vulcanization and volatilization of claim 1 is characterized in that: in fuming furnace, allocate vulcanizing agent into according to the stannous sulfide amount of Theoretical Calculation; To waste heat boiler, take the secondary air blast at fuming furnace, carry out forced oxidation; The dry bag-type dust-precipitator adopts the long bag and low pulse bagroom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100662257A CN101121965A (en) | 2007-09-24 | 2007-09-24 | Technique for reclaiming tin by fuming furnace vulcanization and volatilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100662257A CN101121965A (en) | 2007-09-24 | 2007-09-24 | Technique for reclaiming tin by fuming furnace vulcanization and volatilization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101121965A true CN101121965A (en) | 2008-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100662257A Pending CN101121965A (en) | 2007-09-24 | 2007-09-24 | Technique for reclaiming tin by fuming furnace vulcanization and volatilization |
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| CN (1) | CN101121965A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266220A (en) * | 2013-04-29 | 2013-08-28 | 成都易态科技有限公司 | Roasting process for tin concentrate and special equipment column |
| CN104152715A (en) * | 2014-05-13 | 2014-11-19 | 中国恩菲工程技术有限公司 | Bottom blowing tin smelting process |
| CN107166970A (en) * | 2017-05-23 | 2017-09-15 | 中冶东方工程技术有限公司 | Recovery method and retracting device for high siliceous metal smelting mine heat furnace |
| CN110172593A (en) * | 2019-06-13 | 2019-08-27 | 云南锡业股份有限公司铜业分公司 | A kind of energy-saving and environment-friendly tin smelting system and smelting process |
| CN110205483A (en) * | 2019-06-13 | 2019-09-06 | 云南锡业股份有限公司铜业分公司 | A kind of reduction roasting handles the system and technique of low-grade tin raw material |
| CN111607710A (en) * | 2020-06-23 | 2020-09-01 | 云南锡业股份有限公司锡业分公司 | Equipment and method for non-melting fuming volatile tin |
-
2007
- 2007-09-24 CN CNA2007100662257A patent/CN101121965A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266220A (en) * | 2013-04-29 | 2013-08-28 | 成都易态科技有限公司 | Roasting process for tin concentrate and special equipment column |
| CN103266220B (en) * | 2013-04-29 | 2015-08-05 | 成都易态科技有限公司 | The calcination process technique of Tin concentrate and specific equipment row |
| CN104152715A (en) * | 2014-05-13 | 2014-11-19 | 中国恩菲工程技术有限公司 | Bottom blowing tin smelting process |
| CN104152715B (en) * | 2014-05-13 | 2016-08-24 | 中国恩菲工程技术有限公司 | Bottom blowing tin-making process |
| CN107166970A (en) * | 2017-05-23 | 2017-09-15 | 中冶东方工程技术有限公司 | Recovery method and retracting device for high siliceous metal smelting mine heat furnace |
| CN110172593A (en) * | 2019-06-13 | 2019-08-27 | 云南锡业股份有限公司铜业分公司 | A kind of energy-saving and environment-friendly tin smelting system and smelting process |
| CN110205483A (en) * | 2019-06-13 | 2019-09-06 | 云南锡业股份有限公司铜业分公司 | A kind of reduction roasting handles the system and technique of low-grade tin raw material |
| CN111607710A (en) * | 2020-06-23 | 2020-09-01 | 云南锡业股份有限公司锡业分公司 | Equipment and method for non-melting fuming volatile tin |
| CN111607710B (en) * | 2020-06-23 | 2023-05-09 | 云南锡业股份有限公司锡业分公司 | Equipment and method for non-melting fuming volatile tin |
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