CN102747235B - Method for smelting and producing copper by spray gun adhering slag type Ausmelt furnace - Google Patents
Method for smelting and producing copper by spray gun adhering slag type Ausmelt furnace Download PDFInfo
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- CN102747235B CN102747235B CN201210267250.2A CN201210267250A CN102747235B CN 102747235 B CN102747235 B CN 102747235B CN 201210267250 A CN201210267250 A CN 201210267250A CN 102747235 B CN102747235 B CN 102747235B
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Abstract
The invention discloses a method for smelting and producing copper by a spray gun adhering slag type Ausmelt furnace. The method comprises the following steps: starting the Ausmelt furnace, gradually feeding and heating to form a molten bath, when the liquid level height of the molten bath is 1.7 m, carrying out spray gun three-step adhering slag, that is to say, a first step: descending a spray gun to be 100 mm above the liquid level, remaining for 60 seconds, descending to be level to the liquid level, remaining for 60-90 seconds, ascending the gun to be 2300 mm above the liquid level and remaining for 60 seconds; second step: descending the spray gun to be 200 mm below the liquid level, remaining for 60 seconds, ascending the gun to be 2300 mm above the liquid level and remaining for 60 seconds; third step: descending the spray gun to be 200 mm below the liquid level, remaining for 60 seconds, adding lump coal to solution for 10 seconds, ascending the gun to be 2300 mm above the liquid level and remaining for 60 seconds. The spray gun is descended to be 300-350 mm below the liquid level, and the material is fed to produce continuously, through the three-step adhering slag, the slag is uniformly attached on the outer wall of the spray gun, so that the spray gun is protected, the fluctuating frequency of the furnace temperature is reduced, the service life of a furnace body is prolonged, and the method is mainly used for smelting copper.
Description
(i) technical field: the present invention relates to metallurgical industry production technology and improve, especially a kind of spray gun dross formula Ausmelt furnace copper melting production method.
(ii) background technology: Ausmelt furnace smelting bath smelting process is one of current copper main method of smelting, exhaustion along with worldwide Mineral resources, copper mine taste is more and more lower, although technique of preparing is updated, but copper ore concentrates quality still increasingly and under, Ausmelt furnace smelting bath smelting process with it strong adaptability to raw material show one's talent.Ausmelt furnace adopts oxygen-enriched top blowing technology, and wind, oxygen, fine coal are advertised and entered molten bath by spray gun, at gun slot mixing chamber, mixes and vigorous reaction, constantly stirs molten bath, the transmission of acceleransstoff and heat when heat is provided.The production process of existing Ausmelt furnace is: first start Ausmelt furnace, progressively feed intake and add thermosetting molten bath, when bath surface height reaches after 1.7m height, adopt spray gun down to the following 300-350mm of liquid level, feed intake and produce continuously.Lance head is immersed in high-temperature fusant the inside, be subject to the souring of the softening and high-temperature fusant of high temperature, scaling loss very easily, cause spray gun short work-ing life, cause because of the large production cost of lance head again welding frequency high, because furnace temperature fluctuation frequently makes converter life, shorten, the low situations such as production task that affect of rate occur when blowing in.In copper matte smelting process, due to Fe
3o
4existence, the cooling of furnace slag of splash is set in (dross) on spray gun wall spray gun wall and high-temperature fusant is separated, and can protect spray gun not to be subject to washing away of high-temperature fusant, thereby extends the work-ing life of spray gun.Under the little situation in lance head material improvement space, have only by exploring the dross novel technique of spray gun, extend the work-ing life of spray gun.
(iii) summary of the invention: object of the present invention will solve in existing Ausmelt furnace production process exactly, the easy scaling loss of spray gun, work-ing life is short, the large production cost of welding frequency is high again to cause lance head, furnace temperature fluctuation frequently makes converter life shorten, the problems such as while blowing in, rate is low, and turnout is low, provide a kind of spray gun dross formula Ausmelt furnace copper melting production method.
Concrete scheme of the present invention is: spray gun dross formula Ausmelt furnace copper melting production method, first start Ausmelt furnace, progressively feed intake and add thermosetting molten bath, when bath surface height reaches after 1.7m height, adopt spray gun down to the following 300-350mm of liquid level, feed intake and produce continuously, it is characterized in that: at spray gun, down to liquid level, feed intake before production, carry out spray gun " three steps " dross: the first step a: dross, the above 100mm of liquid level will be arrived under spray gun, stop 60 seconds, again by spray gun down to concordant with liquid level, stop 60-90 second, then mention spray gun to liquid level top 2300mm, stop 60 seconds, second step: secondary dross, by arriving the following 200mm of liquid level under spray gun, stop 60 seconds, then mention spray gun to the above 2300mm of liquid level, stop 60 seconds, the 3rd step: thickening dross, by under spray gun to the following 200mm of liquid level, stop 60 seconds, add lump coal to solution 10 seconds, then mention spray gun to the above 2300mm of liquid level, stop 60 seconds, complete spray gun " three steps " dross.
The present invention is before spray gun inserts molten bath work; three step dross have been carried out; can be evenly thereby make Ausmelt furnace spray gun immerse melt section and above heated part thereof, dross effectively; formed protective layer; make spray gun can directly not be subject to washing away of high temperature solution; reduced the heat effect of high temperature to spray gun stainless steel structure simultaneously; greatly extended the work-ing life of spray gun (head); reduced the rehabilitation cost of spray gun; reduced the furnace temperature fluctuation frequency simultaneously; extend converter life, improved rate improving yield while blowing in.
(iv) embodiment:
Application the present invention carries out the melting of Ausmelt furnace copper and produces: first start Ausmelt furnace, progressively feed intake and add thermosetting molten bath, when bath surface height reaches after 1.7m height, carry out spray gun " three steps " dross: the first step: a dross, by arriving the above 100mm of liquid level under spray gun, stops 60 seconds, now from standby burner hole, observe to be interrupted and see flame, coal ash splashes on a small quantity, has nano sized particles to splash, height 3-5m; Again by spray gun down to concordant with liquid level, stop 60-90 second, now from standby burner hole, observe and can't see flame, spray gun sound step-down is heavy; The coal ash rolling of splashing in a large number can be interrupted and see that garnet small-particle melt splashes in the coal ash of rolling, and particle approximately looks like soya bean size, and the height that splashes can reach 15m; Then mention spray gun to liquid level top 2300mm, stops 60 seconds, now away from molten bath, can reduce flame that rifle head sprays and coal ash to the washing away of the slag of firm extension, the slag on rifle wall also has enough cooling times and space.Second step: secondary dross, by arriving the following 200mm of liquid level under spray gun, stop 60 seconds, now from standby burner hole, to observe and can't see flame, the change of spray gun sound adds overcast, and rifle starts to swing; The coal ash rolling of splashing in a large number can be interrupted and see that larger slabbing garnet melt splashes, the about 2-3cm of melt in the coal ash of rolling
3, highly most of 5-8m that splashes, a small amount of less flying to about 10m; Mention again spray gun to the above 2300mm of liquid level, stop 60 seconds, allow the slag cooled and solidified of hanging on rifle wall.The 3rd step: thickening dross, by under spray gun to the following 200mm of liquid level, stop 60 seconds, add lump coal to solution 10 seconds, then mention spray gun to the above 2300mm of liquid level, stop 60 seconds, the slag of again hanging on cooling gun wall, completes spray gun " three steps " dross; Finally adopt spray gun down to the following 300-350mm of liquid level, feed intake and produce continuously.
Claims (1)
1. spray gun dross formula Ausmelt furnace copper melting production method, first start Ausmelt furnace, progressively feed intake and add thermosetting molten bath, when bath surface height reaches after 1.7m height, adopt spray gun down to the following 300-350mm of liquid level, feed intake and produce continuously, it is characterized in that: at spray gun, down to liquid level, feed intake before production, carry out spray gun " three steps " dross: the first step: a dross, by arriving the above 100mm of liquid level under spray gun, stops 60 seconds, again by spray gun down to concordant with liquid level, stop 60-90 second, then mention spray gun to liquid level top 2300mm, stop 60 seconds; Second step: secondary dross, by arriving the following 200mm of liquid level under spray gun, stop 60 seconds, then mention spray gun to the above 2300mm of liquid level, stop 60 seconds; The 3rd step: thickening dross, by under spray gun to the following 200mm of liquid level, stop 60 seconds, add lump coal to solution 10 seconds, then mention spray gun to the above 2300mm of liquid level, stop 60 seconds, complete spray gun " three steps " dross.
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| CN201210267250.2A CN102747235B (en) | 2012-07-31 | 2012-07-31 | Method for smelting and producing copper by spray gun adhering slag type Ausmelt furnace |
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| CN201210267250.2A CN102747235B (en) | 2012-07-31 | 2012-07-31 | Method for smelting and producing copper by spray gun adhering slag type Ausmelt furnace |
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| CN102747235B true CN102747235B (en) | 2014-04-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104928474B (en) * | 2015-07-08 | 2017-03-01 | 吉林吉恩镍业股份有限公司 | A kind of method extending Ausmelt furnace spray gun service life |
| CN110564976B (en) * | 2019-10-17 | 2021-05-14 | 大冶有色金属有限责任公司 | Process method for automatically dropping spray gun weight of Ausmelt furnace |
| CN112430745B (en) * | 2020-11-11 | 2023-01-31 | 昆明理工大学 | Slag adhering method for oxygen-enriched top-blown immersion smelting lead-smelting process spray gun |
| CN114657395A (en) * | 2022-03-17 | 2022-06-24 | 云南锡业股份有限公司锡业分公司 | Method for prolonging service life of refractory material of tin smelting Osmant furnace |
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| DE19737220A1 (en) * | 1997-08-27 | 1999-03-04 | Oschatz Gmbh | Metallurgical furnace for production of nonferrous metals from a melt by ausmelt technology |
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