CN101812600B - Production technology for one-time tailing combustion in stibium reverberatory furnace - Google Patents
Production technology for one-time tailing combustion in stibium reverberatory furnace Download PDFInfo
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- CN101812600B CN101812600B CN2009102270432A CN200910227043A CN101812600B CN 101812600 B CN101812600 B CN 101812600B CN 2009102270432 A CN2009102270432 A CN 2009102270432A CN 200910227043 A CN200910227043 A CN 200910227043A CN 101812600 B CN101812600 B CN 101812600B
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- antimony
- powder material
- oxygen powder
- reverberatory furnace
- coal
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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
Abstract
The invention discloses a production technology for one-time tailing combustion in a stibium reverberatory furnace, which belongs to the technical field of smelting. The technical process comprises the following steps: A. heating the reverberatory furnace with coal by using a thin coal multi-combustion method; B. adding arsenic caustic sludge, and adding antimony oxide powder at different stages; C. comprising 4-6% of reducer, 1-3% of flux and balance of antimony oxide powder in the antimony oxide powder; D. carrying out reduction, continuing to adding the reducer at different stages, wherein the quantity of the reducer in the whole process does not exceed 10-20% of the weight of the antimony oxide powder; and E. sampling and assaying, and when the content of Sb in the laboratory report is lower than 2%, opening the sludge notch to discharge the tailings. The invention can increase the stibium content and recovery rate, does not need to process the arsenic caustic sludge by a wet process, reduces the environmental pollution and the production cost, and can be used for smelting crude stibium.
Description
Technical field
The present invention relates to technical field of smelting, the production technology for one-time tailing combustion in stibium reverberatory furnace that particularly a kind of needle antimony is smelted.
Background technology
In the prior art, when needle antimony was smelted, antimony reverberatory furnace production technique (repeatedly burning bubble) comprising: operations such as reverberatory furnace fusing and reduction, coarse antimony refining, bubble slag are handled and high-temperature furnace gas cools off and gather dust, owing to the production time of every stove antimony slab is lacked (4-5 days); And the specification of quality to fuel bituminous coal is not high, and temperature requirement is not high when repeatedly burning bubble, about about 800-1000 ℃; Simultaneously, the unit consumption amount of soda ash is also less, thereby, by most of smelting enterprises are adopted.But this technology also exists many weak points: the one, and the bubble quantity of slag of returning the blast furnace processing is many, and contains the antimony height, routinely reverberatory furnace burner hearth area 16m
2Meter, the bubble quantity of slag that every stove antimony produces reaches about 10 tons, and grade is between 30-50%; The 2nd, because the output and the bubble quantity of slag are many, cause every production one stove antimony (by 45 tons), need the antimony oxygen amount of input big, reach (Sb76%) about 80 tons, the direct yield of antimony metal amount is low, has only 78-80%, and the rate of recovery is also low; The 3rd, single stove production cost height, a large amount of bubble slags of generation return blast furnace volatile smelting again, strengthened smelting cost, and the antimony metal amount rate of recovery are lower than primary ore, and the loss of amount of metal is big; The 4th, the arsenic alkali slag that produces need reclaim wherein antimony with wet processing, and not only cost is high but also cause the severe contamination of water surrounding.
Summary of the invention
At the deficiencies in the prior art, technical problem to be solved by this invention provides and a kind ofly can improve straight, the rate of recovery of antimony metal amount, and does not need its arsenic alkali slag of wet processing, reduces environmental pollution, the antimony reverberatory furnace smelting technology that reduces production costs.
The technical solution used in the present invention is a kind of production technology for one-time tailing combustion in stibium reverberatory furnace of invention, and its technical process is:
A, reverberatory furnace is heated with coal, intensity of combustion is greater than 30-50kg/ (m
2.h) more than; Retailoring fire box temperature remains on 1250-1350 ℃, and the first service gate regional temperature is controlled at 1100-1200 ℃; Adopt thin seam score of firings methodology, every 25-30min adds primary fuel, and the pine fire keeps thickness of coal seam at 30-400mm simultaneously, guarantees that burner, the stove tail temperature difference are controlled at 200-400 ℃;
B, when the reverberatory furnace burner hearth first service gate regional temperature reaches more than 1000 ℃, disposable whole addings of arsenic alkali slag that a last stove is produced, and keep persistently overheating state are treated promptly to begin to add antimony oxygen powder material after alkaline residue melts fully;
Be furnished with in C, the antimony oxygen powder material reductive agent, the 1-3% of 4-6% flux, all the other are antimony oxygen powder, look the add-on of every batch of the size decision of furnace volume amount, treat to add after last batch of material melts fully a collection of antimony oxygen powder material in back, till burner hearth is filled it up with again;
D, treat that last batch of antimony oxygen powder material is filled it up with and promptly begin to enter restoring operation after burner hearth melts fully, maintain the temperature at 1100-1200 ℃, squeeze into reductive agent from four service gates, can suitably advance when just beginning to reduce more, can advance 60-80kg at every turn, added every 15 minutes once and stir, amount can be decrescence when finishing to reduction is fast, and whole process is reduced dosage and is controlled at the 10-20% that is no more than antimony oxygen powder material weight;
E, when the not bubbling of liquation face scum silica frost, do not have white cigarette, when not being with the metallic antimony pearl, can scoop out (tail) slag liquid after cooling, sample examination; Hold high temperature in the continuation of insurance of this process relaying, when result of laboratory test Sb＜2%, can open cinder notch, emit tailings.
The technical process of its optimization is:
A`, reverberatory furnace is heated with coal, intensity of combustion is greater than 40kg/ (m
2.h) more than; Retailoring fire box temperature remains on 1300 ℃, and the first service gate regional temperature is controlled at 1100-1200 ℃; Adopt thin seam score of firings methodology, every 25-30min adds primary fuel, and the pine fire keeps thickness of coal seam at 350mm simultaneously, guarantees that burner, the stove tail temperature difference are controlled at 200-300 ℃;
B`, when the reverberatory furnace burner hearth first service gate regional temperature reaches more than 1000 ℃, disposable whole addings of arsenic alkali slag that a last stove is produced, and keep persistently overheating state are treated promptly to begin to add antimony oxygen powder material after alkaline residue melts fully;
Be furnished with 5% reductive agent, 2% flux in C`, the antimony oxygen powder material, all the other are antimony oxygen powder, look the add-on of every batch of the size decision of furnace volume amount, treat to add after last batch of material melts fully a collection of antimony oxygen powder material in back, till burner hearth is filled it up with again;
D`, treat that last batch of antimony oxygen powder material is filled it up with and promptly begin to enter restoring operation after burner hearth melts fully, maintain the temperature at 1100-1200 ℃, squeeze into reductive agent from four service gates, can suitably advance when just beginning to reduce more, can advance 60-80kg at every turn, added every 15 minutes once and stir, amount can be decrescence when finishing to reduction is fast, and whole process is reduced dosage and is controlled at and is no more than 15% of antimony oxygen powder material weight;
E`, when the not bubbling of liquation face scum silica frost, do not have white cigarette, when not being with the metallic antimony pearl, can scoop out slag liquid after cooling, sample examination; Hold high temperature in the continuation of insurance of this process relaying, when result of laboratory test Sb＜2%, can open cinder notch, emit tailings.
Production technology for one-time tailing combustion in stibium reverberatory furnace of the present invention, owing to realize burning " tailings " by control fire box temperature and the add-on of going back raw coal, soda ash or sheet alkali, and the order that adds antimony oxygen powder material by strict control, thereby, make the bubble slag that produces in its production process become tailings less than 2% owing to containing antimony.Simultaneously,, contain antimony, account for, can directly abandon into tailings storehouse Gan Dui when 0.02% of stove antimony metal amount input amount less than 2% owing to about 5 tons of the every stove of this tailings amount; And arsenic alkali slag can directly return reverberatory furnace and handle, and reclaims antimony and recycle alkali, so can reduce the add-on of next stove antimony oxygen and the add-on of alkali.Through overtesting, production technology for one-time tailing combustion in stibium reverberatory furnace of the present invention has the beneficial effect of following several respects:
The one, saved the antimony resource, the direct yield of antimony metal amount can improve more than 10%, and straight receipts can reach 95%, and the rate of recovery can reach 99%;
The 2nd, a part of arsenic have been transferred in the tailings, the generation that has reduced arsenic alkali slag also can directly return reverberatory furnace, has saved the technology investment of wet processing, has protected water surrounding;
The 3rd, comprehensive cost greatly reduces, though increase at relative bituminous coal specification of quality, can increase cost, and on the production time, equate substantially with repeatedly burning to steep, and improve 10% on the output, so remarkable in economical benefits.
Below table one be production technology for one-time tailing combustion in stibium reverberatory furnace of the present invention and the existing main economic and technical norms contrast situation (10m of bubble method when producing that repeatedly burn
2The effect that two kinds of methods of reverberatory furnace are produced is relatively):
The main economic and technical norms contrast of table one situation
Below table two be that production technology for one-time tailing combustion in stibium reverberatory furnace of the present invention is at 10m
2Reverberatory furnace and 18m
2Main economic and technical norms contrast situation when reverberatory furnace is produced:
Table two 10m
2And 18m
2The key technical indexes contrast when reverberatory furnace is produced
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Present embodiment is with 10m
2Reverberatory furnace is an example, and its technical process is as follows:
A, (bituminous coal is adopted in available bituminous coal or coal washing, present embodiment with coal with reverberatory furnace; Require: the fixed carbon in the coal is at 60-70%, and volatile matter is greater than 22-26%, and ash content is less than 12%, and moisture is less than 3%, and granularity is less than 20-40mm) heating, intensity of combustion is greater than 30-50kg/ (m
2.h) [present embodiment adopts 40kg/ (m
2.h)] more than; Retailoring fire box temperature remains on 1250-1350 ℃ (present embodiment adopts 1300 ℃), and the first service gate regional temperature is controlled at 1100-1200 ℃; Adopt thin seam score of firings methodology, every 25-30min adds primary fuel, and the pine fire keeps thickness of coal seam 300-400mm (present embodiment adopts 350mm) simultaneously, guarantees that burner, the stove tail temperature difference are controlled at 200-400 ℃ (present embodiment adopts 200-300 ℃);
B, when the reverberatory furnace burner hearth first service gate regional temperature reaches more than 1000 ℃, disposable whole addings of arsenic alkali slag that a last stove is produced, and keep persistently overheating state are treated promptly to begin to add antimony oxygen powder material after alkaline residue melts fully;
C, (this reductive agent can be the powdery anthracite to be furnished with the reductive agent of 4-6% (present embodiment adopt 5%) by its weight quota in the antimony oxygen powder material, what promptly be commonly called as goes back raw coal, also can adopt other reductive agent, present embodiment adopts goes back raw coal), (this flux can be soda ash to the flux of 1-3%, also can be sheet alkali or other flux, present embodiment adopts 2% soda ash as flux), all the other are antimony oxygen powder, (the determining of each add-on is as the criterion with the antimony oxygen powder material surface lies furnace roof 200-400mm that adds to look the add-on of every batch of the size decision of furnace volume amount, divide 10-20 batch of adding), treat to add again after last batch of material melts fully a collection of antimony oxygen powder material in back, till burner hearth is filled it up with;
D, treat that last batch of antimony oxygen powder material is filled it up with and promptly begin to enter restoring operation after burner hearth melts fully, keep fire box temperature at 1100-1200 ℃, squeeze into reductive agent (present embodiment adopts and goes back raw coal) from four service gates, can suitably advance when just beginning to reduce more, can advance 60-80kg at every turn, added every 15 minutes once and stir, amount can be decrescence when finishing to reduction is fast, and whole process reduction dosage is controlled at the 10-20% (present embodiment employing 15%) that is no more than antimony oxygen powder material weight;
E, when the not bubbling of liquation face scum silica frost, do not have white cigarette, when not being with the metallic antimony pearl, can scoop out tailings liquid after cooling, sample examination; Hold burner hearth high temperature in the continuation of insurance of this process relaying, when result of laboratory test Sb＜2%, can open cinder notch, emit most of tailings, treat to adopt when tailings can not flow out naturally manually to claw the thin tailings of remaining one deck; The Shi Yaoping that skims takes off, and stops slightly when taking off to the slag door, and the wooden dipper handle is slightly raised to reduce the mechanical entrapment of metal.After tailings was discharged, remaining was exactly to smelt the needle antimony of coming out, and can deliver to next process and carry out refining.
Production technology for one-time tailing combustion in stibium reverberatory furnace of the present invention can be used for needle antimony and smelts.
Claims (2)
1. production technology for one-time tailing combustion in stibium reverberatory furnace is characterized in that technical process is:
A, with reverberatory furnace with bituminous coal or coal washing heating, intensity of combustion 30-50kg/ (m
2.h); Retailoring fire box temperature remains on 1250-1350 ℃, and the first service gate regional temperature is controlled at 1100-1200 ℃; Adopt thin seam score of firings methodology, every 25-30mi n adds primary fuel, and the pine fire keeps thickness of coal seam at 300-400mm simultaneously, guarantees that burner, the stove tail temperature difference are controlled at 200-400 ℃;
B, when the reverberatory furnace burner hearth first service gate regional temperature reaches more than 1000 ℃, disposable whole addings of arsenic alkali slag that a last stove is produced, and keep persistently overheating state are treated promptly to begin to add antimony oxygen powder material after alkaline residue melts fully;
In C, the antimony oxygen powder material by its weight quota be furnished with the soda ash of going back raw coal, 1-3% of 4-6% or sheet alkali, all the other are antimony oxygen powder, the size of looking the furnace volume amount determines every batch add-on, treat to add again after last batch of material melts fully a collection of antimony oxygen powder material in back, till burner hearth is filled it up with;
D, treat that last batch of antimony oxygen powder material is filled it up with and promptly begin to enter restoring operation after burner hearth melts fully, maintain the temperature at 1100-1200 ℃, squeeze into from four service gates and to go back raw coal, suitably advance when just beginning to reduce more, advance 60-80kg at every turn, added every 15 minutes once and stir, measure decrescence when finishing to reduction is fast, whole process also raw coal amount is controlled at the 10-20% of antimony oxygen powder material weight;
E, when the not bubbling of liquation face scum silica frost, do not have white cigarette, when not being with the metallic antimony pearl, scoop out tailings liquid after cooling, sample examination; Hold high temperature in the continuation of insurance of this process relaying, when result of laboratory test Sb＜2%, open cinder notch, emit tailings.
2. production technology for one-time tailing combustion in stibium reverberatory furnace according to claim 1 is characterized in that technical process is:
A ｀, with reverberatory furnace with bituminous coal or coal washing heating, intensity of combustion 40kg/ (m
2.h); Retailoring fire box temperature remains on 1300 ℃, and the first service gate regional temperature is controlled at 1100-1200 ℃; Adopt thin seam score of firings methodology, every 25-30min adds primary fuel, and the pine fire keeps thickness of coal seam at 350mm simultaneously, guarantees that burner, the stove tail temperature difference are controlled at 200-300 ℃;
B ｀, when the reverberatory furnace burner hearth first service gate regional temperature reaches more than 1000 ℃, disposable whole addings of arsenic alkali slag that a last stove is produced, and keep persistently overheating state are treated promptly to begin to add antimony oxygen powder material after alkaline residue melts fully;
In C ｀, the antimony oxygen powder material by its weight quota be furnished with 5% go back raw coal, 2% soda ash or sheet alkali, all the other are antimony oxygen powder, the size of looking the furnace volume amount determines every batch add-on, treat to add again after last batch of material melts fully a collection of antimony oxygen powder material in back, till burner hearth is filled it up with;
D ｀, treat that last batch of antimony oxygen powder material is filled it up with and promptly begin to enter restoring operation after burner hearth melts fully, maintain the temperature at 1100-1200 ℃, squeeze into from four service gates and to go back raw coal, suitably advance when just beginning to reduce more, advance 60-80kg at every turn, added every 15 minutes once and stir, measure decrescence when finishing to reduction is fast, whole process also raw coal amount is controlled at and is no more than 15% of antimony oxygen powder material weight;
E ｀, when the not bubbling of liquation face scum silica frost, do not have white cigarette, when not being with the metallic antimony pearl, scoop out slag liquid after cooling, sample examination; Hold high temperature in the continuation of insurance of this process relaying, when result of laboratory test Sb＜2%, open cinder notch, emit tailings.
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| CN2009102270432A CN101812600B (en) | 2009-11-27 | 2009-11-27 | Production technology for one-time tailing combustion in stibium reverberatory furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965517A (en) * | 2012-12-03 | 2013-03-13 | 中南大学 | Treatment method for vitrifying arsenic-alkali residue |
| CN104152721B (en) * | 2014-08-25 | 2016-06-15 | 湖南辰州矿业股份有限公司 | A kind of refine antimony while separation antimony, gold technique |
| CN108220626B (en) * | 2017-12-29 | 2020-01-17 | 湖南锐异资环科技有限公司 | Reduction smelting treatment method for arsenic alkali slag |
| CN112593096A (en) * | 2020-12-07 | 2021-04-02 | 湖南安化渣滓溪矿业有限公司 | Refining method for reducing grade antimony in alkaline residue |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083120A (en) * | 1992-07-17 | 1994-03-02 | 肖雪君 | Refinement of antimony by directly feeding natron residue into air furnace |
| CN1455011A (en) * | 2003-05-06 | 2003-11-12 | 锡矿山闪星锑业有限责任公司 | Method of removing arsenic and selenium for antimony smelting by pyrometallurgy |
| CN1676637A (en) * | 2004-03-31 | 2005-10-05 | 郁南县广鑫冶炼有限公司 | Pollution-free arsenic alkali slage treating technique |
| CN1986854A (en) * | 2005-12-21 | 2007-06-27 | 胡南秋 | As-eliminating antimony refining process with NaoH |
-
2009
- 2009-11-27 CN CN2009102270432A patent/CN101812600B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083120A (en) * | 1992-07-17 | 1994-03-02 | 肖雪君 | Refinement of antimony by directly feeding natron residue into air furnace |
| CN1455011A (en) * | 2003-05-06 | 2003-11-12 | 锡矿山闪星锑业有限责任公司 | Method of removing arsenic and selenium for antimony smelting by pyrometallurgy |
| CN1676637A (en) * | 2004-03-31 | 2005-10-05 | 郁南县广鑫冶炼有限公司 | Pollution-free arsenic alkali slage treating technique |
| CN1986854A (en) * | 2005-12-21 | 2007-06-27 | 胡南秋 | As-eliminating antimony refining process with NaoH |
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| CN101812600A (en) | 2010-08-25 |
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