CN104928474A - Method for prolonging service life of Ausmelt furnace spraying gun - Google Patents
Method for prolonging service life of Ausmelt furnace spraying gun Download PDFInfo
- Publication number
- CN104928474A CN104928474A CN201510396845.1A CN201510396845A CN104928474A CN 104928474 A CN104928474 A CN 104928474A CN 201510396845 A CN201510396845 A CN 201510396845A CN 104928474 A CN104928474 A CN 104928474A
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- Prior art keywords
- spray gun
- spraying gun
- slag
- ausmelt furnace
- spray
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005507 spraying Methods 0.000 title abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 28
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003245 coal Substances 0.000 claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 17
- 239000001301 oxygen Substances 0.000 claims abstract description 17
- 239000003570 air Substances 0.000 claims abstract description 12
- 239000007921 spray Substances 0.000 claims description 123
- 230000003245 working effect Effects 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 238000003723 Smelting Methods 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000010941 cobalt Substances 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 239000005864 Sulphur Substances 0.000 claims description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 229960001866 silicon dioxide Drugs 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000009856 non-ferrous metallurgy Methods 0.000 abstract description 2
- 239000000155 melt Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention provides a method for prolonging the service life of an Ausmelt furnace spraying gun, and belongs to the field of nonferrous metallurgy. The method comprises the following steps that pulverized coal, air and oxygen are sprayed into a furnace through the spraying gun, and the spraying is stayed at the position 300 mm-800 mm higher than the slag face of a molten pool for slag adhering operation; the spraying gun is inserted into the molten pool, the depth of the portion, soaked into the molten pool, of the spraying gun ranges from 100 mm to 300 mm, and the temperature of discharged slags is controlled to range from 1240 DEG C to 1360 DEG C so that the thickness of the slag adhering to the outer wall of the spraying gun can be kept to be from 10 mm to 30 mm. Compared with a traditional method, the service life of the Ausmelt furnace spraying gun can reach 360 h, production of the Ausmelt furnace is stabilized, the production stability is ensured, the production cost of the Ausmelt furnace is lowered, the reasonable slag type is controlled, the melt temperature is controlled to be reasonably emitted to keep the thickness of the slag adhering to the outer wall of the spraying gun, the enough protection layer is formed for the spraying gun, and therefore the service life of the spraying gun is prolonged.
Description
Technical field
The invention belongs to Non-ferrous Metallurgy field, particularly relate to the method in the work-ing life of Ausmelt furnace spray gun extended in a kind of metallurgy of nickel production process.
Background technology
Main operating equipment when meltshop Ausmelt furnace is normally produced is spray gun.Spray gun is mainly Ausmelt furnace melting and provides origin of heat (fine coal) and oxygen-rich air.During normal production, spray gun to be immersed in molten bath between 100mm ~ 300mm, if lance head inserted dark, easily cause the corrosion of gun head and wash away, spray gun inserts the life-span of the effect of depth spray gun in molten bath, and make molten bath form eddy flow by the spray gun wind spraying into molten bath, heat is fully transmitted.Because the high temperature of melt and melt eddy flow immerse the effect of molten bath part to spray gun, make gun head occur damaging, then need when the intact part of gun head is less than 100mm apart from spinning disk to change spray gun.Each replacing spray gun needs stopping production 40 minutes, then production is restarted, spray gun average out in work-ing life 120 hours, in order to reduce costs, stably manufactured, reaches best economic benefit, is imperative for extending Ausmelt furnace spray gun work-ing life in production process.
Therefore need badly in the middle of prior art and want a kind of new technical scheme to solve this problem.
Summary of the invention
Technical problem to be solved by this invention: for shortcomings and deficiencies of the prior art, the invention provides a kind of method extending Ausmelt furnace spray gun work-ing life, is used for reducing production cost.
Extend the method in Ausmelt furnace spray gun work-ing life, it is characterized in that:
Comprise the steps
Step one, spray in stove by fine coal, air, oxygen through spray gun, wherein fine coal, air, oxygen are with a cube consumption Kg/Nm
3spray in stove by the blending ratio of 4:13:7;
Step 2, spray gun is rested on molten bath the top of the slag above the position of 300mm ~ 800mm, carry out dross operation, wherein smelting slag comprises component and mass percentage content is: nickel 0.3% ~ 4%, copper 0.1% ~ 0.5%, cobalt 0.08%, iron 24% ~ 40%, sulphur 0.62%, calcium oxide 3.46%, magnesium oxide 14%, silicon-dioxide 25% ~ 40%, aluminum oxide 4.03%, and this smelting slag composition each component concentration percentage ratio sum equals 100%;
Step 3, after described step 2, spray gun is inserted molten bath, be still in place, vertical direction spray gun top plane for reference plane with spray gun, when the top amplitude of fluctuation of spray gun is less than 100mm, and spray gun air quantity is at 13000Nm
3/ h, when the back pressure value of spray gun is 60KPa ~ 100KPa, the degree of depth that spray gun immerses molten bath is between 100mm ~ 300mm;
Step 4, operator control spray gun air quantity at 10000Nm by distributed control system DCS
3/ h ~ 13000Nm
3/ h, is greater than 10000Nm to keep the cooling air quantity of spray gun
3/ h;
Step 5, operator pass through distributed control system DCS control discharge slag temperature between 1240 DEG C ~ 1360 DEG C, to keep the thickness of spray gun outer wall dross for 10mm ~ 30mm.
Adopt the top blow smelting technique of four layers of spray gun.
By above-mentioned design, the present invention can bring following beneficial effect: spray gun transfer the fuel is in molten bath, if short bunker, furnace temperature declines and causes the accumulation of raw material, can cause extruding, cause the body of a gun to be out of shape to gun head; If the fuel quantity that spray gun is sent into is large, a large amount of combustion reactionss is carried out at rifle head, direct scaling loss rifle head, cause side pressure value unstable simultaneously, affect the accuracy of rifle head depth of penetration, and then affecting the life-span of spray gun, method provided by the invention controls fine coal, air, oxygen with the ratio of cube consumption, stabilizes Ausmelt furnace and produces; The present invention controls Rational Slag, and smelting slag comprises the reasonable disposition of composition and mass percentage content, can reduce the erosion of smelting slag to lance technology equipment.Spray gun inserts the life-span of the effect of depth spray gun in molten bath; when the present invention normally produces; control spray gun and be immersed in 100mm ~ 300mm in molten bath; the present invention controls rationally to discharge melt temperature; the thickness of spray gun outer wall dross is kept with this; enough protective layers are formed to spray gun, extends spray gun work-ing life.Adopt reach 360 hours the work-ing life of technical process Ausmelt furnace spray gun of the present invention, stabilize Ausmelt furnace and produce, ensure that the stability of production, reduce Ausmelt furnace production cost.
Accompanying drawing explanation
Illustrate that the invention will be further described with embodiment below in conjunction with accompanying drawing:
Fig. 1 is schema of the present invention.
Fig. 2 is the position view of Ausmelt furnace spray gun of the present invention.
Embodiment
As shown in the figure, the inventive method adopts the top blow smelting technique of four layers of spray gun, Ausmelt furnace spray gun is for the treatment of the key equipment containing copper, cobalt, nickel ore concentrate smelting furnace, and this equipment is made up of four concentric tubes, is coal-fired (comprise and carry coal air) pipe from interior pipe to outer tube successively; Inner spray gun air and oxygen hose; Outside spray gun blast main, sleeve blast main, whole lance tubes all uses medium carbon steel and stainless steel manufacture.In normal productive process, the single spray gun operation of Ausmelt furnace, air, oxygen and fine coal are supplied to spray gun via flexible pipe and rapid-acting coupling, spray gun top-submerged is in liquid slag bath, fuel and combustion air are provided under weld pool surface, oxygen is to technique and burn, enhanced burning and reaction efficiency.
In furnace temperature higher than 800 DEG C, spray gun is lighted a fire by PCS Controlling System, black furnace is produced, and produces molten bath by fusing Water Quenching Slag, carries out spray gun dross and submergence operation after igniting, by spray gun sound, back pressure with rock and judge Burners Positions, if lance head inserted deeply, easily cause the corrosion of gun head and wash away, spray gun inserted the life-span of the effect of depth spray gun in molten bath, generally, spray gun is immersed in molten bath basifacial 100mm ~ 300mm.The damage of spray gun is more serious in the spray gun cross section in mixed firing region (namely below oxygen and the outlet of coal-fired pipe), when spray gun wearing and tearing change spray gun more than needing when 150mm or gun barrel having occurred larger hole, the work-ing life of spray gun is normally about 7 days.This patent produces actual process operation of summing up out, and the structure of modification of lance driving device own at the scene by adopting, and reaches and extends spray gun work-ing life by about 15 days.
Embodiment
Embodiment 1
Extend the method in Ausmelt furnace spray gun work-ing life, it is characterized in that:
Comprise the steps
Step one, spray in stove by fine coal, air, oxygen through spray gun, wherein fine coal, air, oxygen are with Kg/Nm
3by 4:13:7 (fine coal units/kg; Air, oxygen unit Nm
3) blending ratio spray in stove;
Step 2, spray gun is rested on molten bath the top of the slag above the position of 300mm, carry out dross operation, wherein smelting slag comprises composition and mass percentage content is: nickel 0.3%, copper 0.1%, cobalt 0.08%, iron 24%, sulphur 0.62%, calcium oxide 3.46%, magnesium oxide 14%, silicon-dioxide 25%, aluminum oxide 4.03%;
Step 3, after described step 2, spray gun is inserted molten bath, be still in place, vertical direction spray gun top plane for reference plane with spray gun, as the top amplitude of fluctuation 98mm of spray gun, and spray gun air quantity is at 13000Nm
3/ h, when the back pressure value of spray gun is 60KPa, the degree of depth that spray gun immerses molten bath is 100mm;
Step 4, operator control spray gun air quantity at 11000Nm by distributed control system DCS
3/ h;
Step 5, operator at 1240 DEG C, to keep the thickness of spray gun outer wall dross for 10mm, form enough protective layers to spray gun by distributed control system DCS control discharge slag temperature.
Embodiment 2
Extend the method in Ausmelt furnace spray gun work-ing life, it is characterized in that:
Comprise the steps
Step one, spray in stove by fine coal, air, oxygen through spray gun, wherein fine coal, air, oxygen are with Kg/Nm
3by 4:13:7 (fine coal units/kg; Air, oxygen unit Nm
3) blending ratio spray in stove;
Step 2, spray gun is rested on molten bath the top of the slag above the position of 600mm, carry out dross operation, wherein smelting slag comprises composition and mass percentage content is: nickel 1.8%, copper 0.3%, cobalt 0.08%, iron 30%, sulphur 0.62%, calcium oxide 3.46%, magnesium oxide 14%, silicon-dioxide 30%, aluminum oxide 4.03%;
Step 3, after described step 2, spray gun is inserted molten bath, be still in place, vertical direction spray gun top plane for reference plane with spray gun, as the top amplitude of fluctuation 95mm of spray gun, and spray gun air quantity is at 13000Nm
3/ h, when the back pressure value of spray gun is 90KPa, the degree of depth that spray gun immerses molten bath is 200mm;
Step 4, operator control spray gun air quantity at 12000Nm by distributed control system DCS
3/ h;
Step 5, operator at 1260 DEG C, to keep the thickness of spray gun outer wall dross for 20mm, form enough protective layers to spray gun by distributed control system DCS control discharge slag temperature.
Embodiment 3
Extend the method in Ausmelt furnace spray gun work-ing life, it is characterized in that:
Comprise the steps
Step one, spray in stove by fine coal, air, oxygen through spray gun, wherein fine coal, air, oxygen are with a cube consumption Kg/Nm
3spray in stove by the blending ratio of 4:13:7;
Step 2, spray gun is rested on molten bath the top of the slag above the position of 600mm, carry out dross operation, wherein smelting slag comprises composition and mass percentage content is: nickel 3%, copper 0.5%, cobalt 0.08%, iron 40%, sulphur 0.62%, calcium oxide 3.46%, magnesium oxide 14%, silicon-dioxide 40%, aluminum oxide 4.03%;
Step 3, after described step 2, spray gun is inserted molten bath, be still in place, vertical direction spray gun top plane for reference plane with spray gun, as the top amplitude of fluctuation 90mm of spray gun, and spray gun air quantity is at 13000Nm
3/ h, when the back pressure value of spray gun is 100KPa, the degree of depth that spray gun immerses molten bath is 200mm;
Step 4, operator control spray gun air quantity at 12000Nm by distributed control system DCS
3/ h;
Step 5, operator at 1360 DEG C, to keep the thickness of spray gun outer wall dross for 20mm, form enough protective layers to spray gun by distributed control system DCS control discharge slag temperature.
Adopt reach 360 hours the work-ing life of technical process Si Maite stove spray gun of the present invention, stabilize Ausmelt furnace and produce, ensure that the stability of production, reduce Ausmelt furnace production cost.
Claims (2)
1. extend the method in Ausmelt furnace spray gun work-ing life, it is characterized in that:
Comprise the steps
Step one, spray in stove by fine coal, air, oxygen through spray gun, wherein fine coal, air, oxygen are with a cube consumption Kg/Nm
3spray in stove by the blending ratio of 4:13:7;
Step 2, spray gun is rested on molten bath the top of the slag above the position of 300mm ~ 800mm, carry out dross operation, wherein smelting slag comprises component and mass percentage content is: nickel 0.3% ~ 4%, copper 0.1% ~ 0.5%, cobalt 0.08%, iron 24% ~ 40%, sulphur 0.62%, calcium oxide 3.46%, magnesium oxide 14%, silicon-dioxide 25% ~ 40%, aluminum oxide 4.03%, and this smelting slag composition each component concentration percentage ratio sum equals 100%;
Step 3, after described step 2, spray gun is inserted molten bath, be still in place, vertical direction spray gun top plane for reference plane with spray gun, when the top amplitude of fluctuation of spray gun is less than 100mm, and spray gun air quantity is at 13000Nm
3/ h, when the back pressure value of spray gun is 60KPa ~ 100KPa, the degree of depth that spray gun immerses molten bath is between 100mm ~ 300mm;
Step 4, operator control spray gun air quantity at 10000Nm by distributed control system DCS
3/ h ~ 13000Nm
3/ h, is greater than 10000Nm to keep the cooling air quantity of spray gun
3/ h;
Step 5, operator pass through distributed control system DCS control discharge slag temperature between 1240 DEG C ~ 1360 DEG C, to keep the thickness of spray gun outer wall dross for 10mm ~ 30mm.
2. a kind of method extending Ausmelt furnace spray gun work-ing life according to claim 1, is characterized in that: the top blow smelting technique adopting four layers of spray gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510396845.1A CN104928474B (en) | 2015-07-08 | 2015-07-08 | A kind of method extending Ausmelt furnace spray gun service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510396845.1A CN104928474B (en) | 2015-07-08 | 2015-07-08 | A kind of method extending Ausmelt furnace spray gun service life |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104928474A true CN104928474A (en) | 2015-09-23 |
| CN104928474B CN104928474B (en) | 2017-03-01 |
Family
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Family Applications (1)
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|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564976A (en) * | 2019-10-17 | 2019-12-13 | 大冶有色金属有限责任公司 | Process method for automatically dropping spray gun weight of Ausmelt furnace |
| CN111394596A (en) * | 2020-03-19 | 2020-07-10 | 吉林吉恩镍业股份有限公司 | Method for reducing Ausmelt furnace melt |
| CN112430745A (en) * | 2020-11-11 | 2021-03-02 | 昆明理工大学 | Slag adhering method for oxygen-enriched top-blown immersion smelting lead-smelting process spray gun |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4989838A (en) * | 1989-08-10 | 1991-02-05 | Kaldon Richard G | Metallurgical treatment lance |
| CN101148705A (en) * | 2007-11-09 | 2008-03-26 | 中条山有色金属集团有限公司 | Oxygen-enriched air refining method for copper by using converting furnace |
| CN102140585A (en) * | 2011-03-11 | 2011-08-03 | 吉林吉恩镍业股份有限公司 | Method for smelting nickel ore concentrate by using smelting furnace |
| CN102747235A (en) * | 2012-07-31 | 2012-10-24 | 大冶有色金属有限责任公司 | Method for smelting and producing copper by spray gun adhering slag type Ausmelt furnace |
| CN104131170A (en) * | 2014-08-13 | 2014-11-05 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Smelting process of low-grade scrap copper |
-
2015
- 2015-07-08 CN CN201510396845.1A patent/CN104928474B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4989838A (en) * | 1989-08-10 | 1991-02-05 | Kaldon Richard G | Metallurgical treatment lance |
| CN101148705A (en) * | 2007-11-09 | 2008-03-26 | 中条山有色金属集团有限公司 | Oxygen-enriched air refining method for copper by using converting furnace |
| CN102140585A (en) * | 2011-03-11 | 2011-08-03 | 吉林吉恩镍业股份有限公司 | Method for smelting nickel ore concentrate by using smelting furnace |
| CN102747235A (en) * | 2012-07-31 | 2012-10-24 | 大冶有色金属有限责任公司 | Method for smelting and producing copper by spray gun adhering slag type Ausmelt furnace |
| CN104131170A (en) * | 2014-08-13 | 2014-11-05 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Smelting process of low-grade scrap copper |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564976A (en) * | 2019-10-17 | 2019-12-13 | 大冶有色金属有限责任公司 | Process method for automatically dropping spray gun weight of Ausmelt furnace |
| CN111394596A (en) * | 2020-03-19 | 2020-07-10 | 吉林吉恩镍业股份有限公司 | Method for reducing Ausmelt furnace melt |
| CN112430745A (en) * | 2020-11-11 | 2021-03-02 | 昆明理工大学 | Slag adhering method for oxygen-enriched top-blown immersion smelting lead-smelting process spray gun |
| 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 |
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|---|---|
| CN104928474B (en) | 2017-03-01 |
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