CN104928474B - A kind of method extending Ausmelt furnace spray gun service life - Google Patents
A kind of method extending Ausmelt furnace spray gun service life Download PDFInfo
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- CN104928474B CN104928474B CN201510396845.1A CN201510396845A CN104928474B CN 104928474 B CN104928474 B CN 104928474B CN 201510396845 A CN201510396845 A CN 201510396845A CN 104928474 B CN104928474 B CN 104928474B
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- spray gun
- service life
- molten bath
- slag
- ausmelt furnace
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- 239000007921 spray Substances 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002893 slag Substances 0.000 claims abstract description 27
- 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
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000003723 Smelting Methods 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
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 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
- 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
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 239000011593 sulfur Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000000470 constituent Substances 0.000 claims description 2
- 239000003818 cinder Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000011241 protective layer Substances 0.000 abstract description 5
- 238000009856 non-ferrous metallurgy Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 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
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 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
- 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
- 238000007670 refining Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The present invention provides a kind of method extending Ausmelt furnace spray gun service life, belongs to Non-ferrous Metallurgy field, comprises the following steps：Fine coal, air, oxygen are sprayed in stove through spray gun；Spray gun is rested on the position of 300mm～800mm above the top of the slag in molten bath, carry out dross operation；Spray gun is inserted molten bath, the depth that spray gun immerses molten bath is between 100mm～300mm, control discharge slag temperature between 1240 DEG C～1360 DEG C, with the thickness of holding spray gun outer wall dross as 10mm～30mm, compared with traditional method, the service life of Ausmelt furnace spray gun of the present invention reaches 360 hours, stabilize Ausmelt furnace to produce, ensure that the stability of production, reduce Ausmelt furnace production cost, control Rational Slag, control and rationally discharge melt temperature, to keep the thickness of spray gun outer wall dross, spray gun is formed with enough protective layers, thus extending spray gun service life.
Description
Technical field
The invention belongs to Non-ferrous Metallurgy field, Ausmelt furnace spray in more particularly to a kind of metallurgy of nickel production process
The method that rifle increases the service life.
Background technology
Primary operational equipment when meltshop Ausmelt furnace normally produces is spray gun.Spray gun is mainly Ausmelt furnace
Melting provides origin of heat (fine coal) and oxygen-enriched air.During normal production, spray gun is immersed in molten bath between 100mm～300mm,
If lance head insertion is too deep, it is easily caused the corrosion to gun head and washes away, spray gun inserts the effect of depth spray gun in molten bath
Life-span, and by spray into the spray gun wind in molten bath make molten bath formed eddy flow, so that heat is fully transmitted.Due to the high temperature of melt and molten
Body eddy flow immerses the effect of molten bath part to spray gun, makes gun head occur damaging, when the intact part of gun head is away from eddy flow
Piece is less than during 100mm then to be needed to change spray gun.Changing spray gun every time needs to stop production 40 minutes, then restarts production, spray gun
Service life average out to 120 hours, for reduces cost, steady production, reaches optimal economic benefit, in production process
It is imperative for extending Ausmelt furnace spray gun service life.
Therefore needing badly in the middle of prior art wants a kind of new technical scheme to solve this problem.
Content of the invention
The technical problem to be solved：For shortcomings and deficiencies of the prior art, the present invention provides a kind of prolongation
The method of Ausmelt furnace spray gun service life, for reducing production cost.
A kind of method extending Ausmelt furnace spray gun service life, is characterized in that：
Comprise the steps
Step one, fine coal, air, oxygen are sprayed in stove through spray gun, wherein fine coal, air, oxygen are with a cube consumption
Kg/Nm3By 4：13：7 mixed proportion sprays in stove；
Step 2, spray gun is rested on the position of 300mm～800mm above the top of the slag in molten bath, 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%, ferrum 24%
～40%, sulfur 0.62%, calcium oxide 3.46%, magnesium oxide 14%, silicon dioxide 25%～40%, aluminium oxide 4.03%, this melts
Refining slag compositionss each constituent content percent sum is equal to 100%；
Step 3, after described step 2, spray gun is inserted molten bath, vertical direction spray gun top institute is still in spray gun
Face on the basis of plane, spray gun top amplitude of fluctuation is less than 100mm, and spray gun air quantity is 13000Nm3/ h, the back pressure value of spray gun is
During 60KPa～100KPa, the depth that spray gun immerses molten bath is between 100mm～300mm；
Step 4, operator control spray gun air quantity in 10000Nm by Distributed Control System DCS3/ h～13000Nm3/
h；
Step 5, operator are passed through Distributed Control System DCS and are controlled discharge slag temperature between 1240 DEG C～1360 DEG C,
With the thickness of holding spray gun outer wall dross as 10mm～30mm.
Top blow smelting technique using four layers of spray gun.
By above-mentioned design, the present invention can bring following beneficial effect：Spray gun delivers the fuels in molten bath, if
Fuel shortage, furnace temperature declines the accumulation causing raw material, gun head can be caused extrude, and leads to the body of a gun to deform；If spray gun send
The fuel quantity that enters is big, carries out substantial amounts of combustion reaction, direct scaling loss pipette tips in pipette tips, and it is unstable to also result in side pressure value, affects
The accuracy of pipette tips insertion depth, so affect spray gun life-span, the present invention provide method control 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 composition and quality hundred
Divide the reasonable disposition than content, the erosion to lance technology equipment for the smelting slag can be reduced.Spray gun inserts the effect of depth in molten bath
In the life-span of spray gun, when the present invention normally produces, spray gun is controlled to be immersed in 100mm～300mm in molten bath, the present invention controls rationally row
Put melt temperature, the thickness of spray gun outer wall dross is kept with this, enough protective layers are formed to spray gun, to extend spray gun and to use
Life-span.Service life using the technological process Ausmelt furnace spray gun of the present invention reaches 360 hours, stabilizes Ausmelt furnace
Producing the stability it is ensured that producing, reducing Ausmelt furnace production cost.
Brief description
The invention will be further described with specific embodiment for explanation below in conjunction with the accompanying drawings：
Fig. 1 is the flow chart of the present invention.
Fig. 2 is the position view of the Ausmelt furnace spray gun of the present invention.
Specific embodiment
As illustrated, the inventive method adopts the top blow smelting technique of four layers of spray gun, Ausmelt furnace spray gun is for locating
Reason containing copper, cobalt, nickel ore concentrate smelting furnace key equipment, this equipment is made up of four concentric tubees, from inner tube to outer tube is successively
Coal-fired (including carrying coal air) pipe；Internal spray gun air and oxygen hose；Outside spray gun air hose, sleeve air hose, whole spray
Gun barrel all uses medium carbon steel and stainless steel making.In normal productive process, the single spray gun of Ausmelt furnace operate, air, oxygen and
Fine coal is supplied to spray gun via flexible pipe and snap joint, and spray gun top-submerged, in liquid slag bath, provides combustion under weld pool surface
Material and combustion air, oxygen to technique and burn, strengthen burning and reaction efficiency.
It is higher than 800 DEG C in furnace temperature, spray gun is lighted a fire by PCS control system, black furnace produces, melted by melting Water Quenching Slag and producing
Pond, carries out spray gun dross and submergence operation after igniting, by spray gun sound, back pressure with rock and to judge Burners Positions, if spray
Pipette tips insertion is too deep, is easily caused the corrosion to gun head and washes away, and spray gun inserts the life-span of the effect of depth spray gun in molten bath,
Generally, spray gun is immersed in molten bath face bottom 100mm～300mm.The damage of spray gun is in mixed combustion region (i.e. in oxygen
Spray gun section with the outlet of coal-fired pipe below) is more serious, occurs in that larger hole on spray gun abrasion is more than 150mm or gun barrel
When need to change spray gun, the service life of spray gun is normal to be 7 days about.This patent is by being summed up using produce reality at the scene
The process operation coming, and lance driving device structure of modification itself, reach and extend spray gun service life to 15 days.
Specific embodiment
Embodiment 1
A kind of method extending Ausmelt furnace spray gun service life, is characterized in that：
Comprise the steps
Step one, fine coal, air, oxygen are sprayed in stove through spray gun, wherein fine coal, air, oxygen are with Kg/Nm3Press
4：13：7 (fine coal units/kg；Air, oxygen unit Nm3) mixed proportion spray in stove；
Step 2, spray gun is rested on the position of 300mm above the top of the slag in molten bath, carry out dross operation, wherein smelting slag
Comprise composition and mass percentage content is：Nickel 0.3%, copper 0.1%, cobalt 0.08%, ferrum 24%, sulfur 0.62%, calcium oxide
3.46%th, magnesium oxide 14%, silicon dioxide 25%, aluminium oxide 4.03%；
Step 3, after described step 2, spray gun is inserted molten bath, vertical direction spray gun top institute is still in spray gun
Face on the basis of plane, when top amplitude of fluctuation 98mm of spray gun, and spray gun air quantity is in 13000Nm3/ h, the back pressure value of spray gun is
During 60KPa, the depth that spray gun immerses molten bath is 100mm；
Step 4, operator control spray gun air quantity in 11000Nm by Distributed Control System DCS3/h；
Step 5, operator are passed through Distributed Control System DCS and are controlled discharge slag temperature at 1240 DEG C, to keep outside spray gun
The thickness of wall hanging slag is 10mm, and spray gun is formed with enough protective layers.
Embodiment 2
A kind of method extending Ausmelt furnace spray gun service life, is characterized in that：
Comprise the steps
Step one, fine coal, air, oxygen are sprayed in stove through spray gun, wherein fine coal, air, oxygen are with Kg/Nm3Press
4：13：7 (fine coal units/kg；Air, oxygen unit Nm3) mixed proportion spray in stove；
Step 2, spray gun is rested on the position of 600mm above the top of the slag in molten bath, carry out dross operation, wherein smelting slag
Comprise composition and mass percentage content is：Nickel 1.8%, copper 0.3%, cobalt 0.08%, ferrum 30%, sulfur 0.62%, calcium oxide
3.46%th, magnesium oxide 14%, silicon dioxide 30%, aluminium oxide 4.03%；
Step 3, after described step 2, spray gun is inserted molten bath, vertical direction spray gun top institute is still in spray gun
Face on the basis of plane, when top amplitude of fluctuation 95mm of spray gun, and spray gun air quantity is in 13000Nm3/ h, the back pressure value of spray gun is
During 90KPa, the depth that spray gun immerses molten bath is 200mm；
Step 4, operator control spray gun air quantity in 12000Nm by Distributed Control System DCS3/h；
Step 5, operator are passed through Distributed Control System DCS and are controlled discharge slag temperature at 1260 DEG C, to keep outside spray gun
The thickness of wall hanging slag is 20mm, and spray gun is formed with enough protective layers.
Embodiment 3
A kind of method extending Ausmelt furnace spray gun service life, is characterized in that：
Comprise the steps
Step one, fine coal, air, oxygen are sprayed in stove through spray gun, wherein fine coal, air, oxygen are with a cube consumption
Kg/Nm3By 4：13：7 mixed proportion sprays in stove；
Step 2, spray gun is rested on the position of 600mm above the top of the slag in molten bath, carry out dross operation, wherein smelting slag
Comprise composition and mass percentage content is：Nickel 3%, copper 0.5%, cobalt 0.08%, ferrum 40%, sulfur 0.62%, calcium oxide
3.46%th, magnesium oxide 14%, silicon dioxide 40%, aluminium oxide 4.03%；
Step 3, after described step 2, spray gun is inserted molten bath, vertical direction spray gun top institute is still in spray gun
Face on the basis of plane, when top amplitude of fluctuation 90mm of spray gun, and spray gun air quantity is in 13000Nm3/ h, the back pressure value of spray gun is
During 100KPa, the depth that spray gun immerses molten bath is 200mm；
Step 4, operator control spray gun air quantity in 12000Nm by Distributed Control System DCS3/h；
Step 5, operator are passed through Distributed Control System DCS and are controlled discharge slag temperature at 1360 DEG C, to keep outside spray gun
The thickness of wall hanging slag is 20mm, and spray gun is formed with enough protective layers.
Service life using the technological process Si Maite stove spray gun of the present invention reaches 360 hours, stabilizes Australia Si Maite
Stove produces the stability it is ensured that producing, and reduces Ausmelt furnace production cost.
Claims (2)
1. a kind of method extending Ausmelt furnace spray gun service life, is characterized in that：
Comprise the steps
Step one, fine coal, air, oxygen are sprayed in stove through spray gun, wherein fine coal, air, oxygen are with a cube consumption Kg/Nm3
By 4：13：7 mixed proportion sprays in stove；
Step 2, spray gun is rested on the position of 300mm～800mm above the top of the slag in molten bath, carry out dross operation, wherein melting
Cinder ladle contains component and mass percentage content is：Nickel 0.3%～4%, copper 0.1%～0.5%, cobalt 0.08%, ferrum 24%～
40%th, sulfur 0.62%, calcium oxide 3.46%, magnesium oxide 14%, silicon dioxide 25%～40%, aluminium oxide 4.03%, this melting
Slag compositionss each constituent content percent sum is equal to 100%；
Step 3, after described step 2, spray gun is inserted molten bath, with spray gun be still in vertical direction spray gun top be located flat
Face on the basis of face, spray gun top amplitude of fluctuation is less than 100mm, and spray gun air quantity is 13000Nm3/ h, the back pressure value of spray gun is 60KPa
～100KPa, the depth that spray gun immerses molten bath is between 100mm～300mm；
Step 4, operator control spray gun air quantity in 10000Nm by Distributed Control System DCS3/ h～13000Nm3/h；
Step 5, operator are passed through Distributed Control System DCS and are controlled discharge slag temperature between 1240 DEG C～1360 DEG C, to protect
The thickness holding spray gun outer wall dross is 10mm～30mm.
2. a kind of method extending Ausmelt furnace spray gun service life according to claim 1, is characterized in that：Using four
The top blow smelting technique of layer spray gun.
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| 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 |
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| CN104928474A CN104928474A (en) | 2015-09-23 |
| CN104928474B true CN104928474B (en) | 2017-03-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
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 |
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