CN102828045B - Special pulverized coal burner for silver and copper molten pool smelting furnace - Google Patents
Special pulverized coal burner for silver and copper molten pool smelting furnace Download PDFInfo
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- CN102828045B CN102828045B CN 201210329227 CN201210329227A CN102828045B CN 102828045 B CN102828045 B CN 102828045B CN 201210329227 CN201210329227 CN 201210329227 CN 201210329227 A CN201210329227 A CN 201210329227A CN 102828045 B CN102828045 B CN 102828045B
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- smelting furnace
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Abstract
The invention relates to a special pulverized coal burner for a silver and copper molten pool smelting furnace. A spiral flow type pulverized coal burner arranged in a converting region and a settling region of the silver and copper molten pool smelting furnace has the following characteristics that the burner capability is 1400 to 2000 kg/h, the number of the burner is one, the primary conveying air quantity is 3000 to 3200 Nm<3>/h, the primary conveying air pressure is 3000 Pa, the primary conveying air temperature is the normal temperature, the secondary combustion supporting air is oxygen-enriched air, the air quantity of the secondary combustion supporting air is 12000 to 12800 Nm<3>/h, the secondary combustion supporting air pressure is 5000 Pa, and the secondary combustion supporting air temperature is 150 to 25000 DEG C. When the special pulverized coal burner is adopted, pulverized coal can be fully, uniformly and stably burnt, the flame is strong and bright, phenomena such as deflagration, reverse extinguishing, flamelifting, tempering and coking cannot occur, and the burner can provide stable and sufficient external supply heat for a silver furnace.
Description
Technical field
The present invention relates to a kind of powdered coal burner, especially refer to the powdered coal burner of a kind of silver copper bath smelting furnace special use.
Background technology
Silver copper bath smelting furnace is a fixing galley, with the partition wall passage stove is divided into blowing district and settling region, blowing district furnace roof is provided with dog-house, the furnace side wall is provided with blowing mouth, furnace side, settling region wall is provided with cinder notch and Tong Kou, go into stove material and oxygen-rich air after the process series of complex physico-chemical of smelting zone, the smelting zone melt enters the settling region through the partition wall passage and carries out separating of slag and copper, slag and matte are emitted from cinder notch and Tong Kou respectively, thereby finish the fusion process of copper ore concentrates.The heat that the copper ore concentrates fusion process needs is made up of interior heat supply and outer heat supply two portions, interior heat supply comprises chemical reaction heats such as sulfurous gas that the free sulfur oxidation generates, metallic sulfide oxidation reaction, slag making reaction, outer heat supply then must be provided by the combustion unit combustion fuel, therefore, select suitable fuel and combustion unit to add heat for the melting of silver stove provides.
Summary of the invention
The invention provides the powdered coal burner of a kind of silver copper bath smelting furnace special use, can make the temperature of silver copper bath smelting furnace smelting zone and settling region all keep stable, thereby provide adequate heat for the melting matte.
For this reason, adopt following technical scheme: the powdered coal burner of a kind of silver copper bath smelting furnace special use, described powdered coal burner is selected the whirlwind-type powdered coal burner, and this whirlwind-type powdered coal burner is arranged at blowing district and the settling region of described silver copper bath smelting furnace respectively; The whirlwind-type powdered coal burner that is arranged at described silver copper bath smelting furnace blowing district has following feature: burner ability 1400～2000kg/h, 1 of burner number is once carried wind air quantity 3000～3200 Nm
3/ h once carries wind pressure 3000 Pa, once carries wind-warm syndrome degree normal temperature, and the secondary combustion air is oxygen-rich air, its air quantity 12000～12800 Nm
3/ h, secondary combustion air blast 5000 Pa, secondary combustion air temperature 150～250
0C.
The whirlwind-type powdered coal burner that is arranged at described silver copper bath smelting furnace settling region has following feature: burner ability 1300～2000kg/h, 1 of burner number is once carried wind air quantity 2680～3200 Nm
3/ h once carries wind pressure 3000 Pa, once carries wind-warm syndrome degree normal temperature, and the secondary combustion air is oxygen-rich air, its air quantity 10700～12800 Nm
3/ h, secondary combustion air blast 5000 Pa, secondary combustion air temperature 150～250
0C.
The whirlwind-type powdered coal burner that is arranged at described silver copper bath smelting furnace blowing district is installed on the partition wall in the described silver copper bath smelting furnace stove and is in the blowing district, and its mounted angle is 27 °; And the whirlwind-type powdered coal burner that is arranged at described silver copper bath smelting furnace settling region is installed on the side wall of stokehold, settling region, and mounted angle is 8 °.
The technical indicator of the fine coal that described powdered coal burner is selected for use is as follows: interior water＜1%, fugitive constituent 22～25%, ash＜16%, fixed carbon C＞58%, granularity-200 order＞85%, calorific value＞2.7 * 104 KJ/Kg.
The present invention is after silver copper bath smelting furnace is used, and result of use is good, and major advantage is summarized as follows:
1, pulverized coal friring fully, evenly, stable, flame is bold bright, no deflagration, attacks, takes off phenomenons such as fire, tempering, coking in retaliation, burner can provide the outer heat supplied of stable abundance for the silver stove.The length of flame of blowing district and settling region is stabilized between 5500～6500mm and the 9000～9500mm, and temperature of combustion is stabilized in 1250～1300
0C and 1300～1350
0Between the C, guaranteed the outer heat supplied of silver copper bath smelting furnace melting matte.
2, because secondary hot-air is oxygen-rich air, solved the inadequate problem of pulverized coal friring on the one hand; Reduce the content of elementary sulfur in the silver copper bath smelting outlet of still flue gas on the other hand, eliminated the harm of elementary sulfur to follow-up waste heat boiler and sulfate system.
3, owing to be provided with torch oil gun in the middle of the whirlwind-type powdered coal burner, the naked light of some oil combustion gun recycling oil gun is lighted fine coal earlier, the igniting of fine coal is become be easy to.
4, adopt wear-resistant liner stupalith, anti-fine coal erosive wear, whole device longer service life owing to overlap the powder feeding elbow in the whirlwind-type powdered coal burner.
5, the whirlwind-type powdered coal burner is simple to operate, and failure rate is low, and is easy to maintenance.
Description of drawings
Fig. 1 is the scheme of installation of whirlwind-type powdered coal burner among the present invention.
Embodiment
Below the present invention is further detailed explanation.
The powdered coal burner of a kind of silver copper bath smelting furnace special use, described powdered coal burner is selected the whirlwind-type powdered coal burner, and this whirlwind-type powdered coal burner is arranged at blowing district 2 and the settling region 5 of described silver copper bath smelting furnace respectively; The whirlwind-type powdered coal burner 1 that is arranged at described silver copper bath smelting furnace blowing district 2 has following feature: burner ability 1400～2000kg/h, 1 of burner number is once carried wind air quantity 3000～3200 Nm
3/ h once carries wind pressure 3000 Pa, once carries wind-warm syndrome degree normal temperature, and the secondary combustion air is oxygen-rich air, its air quantity 12000～12800 Nm
3/ h, secondary combustion air blast 5000 Pa, secondary combustion air temperature 150～250
0C.Because of the wide adaptability of silver stove to raw material, especially can handle low-grade complicated copper ore concentrates, when going into after the stove material enters blowing district 2, only inner heat supply can't be finished matte smelting, also must rely on pulverized coal friring to replenish not enough heat, if pulverized coal friring is bad, whole blowing district temperature will be on the low side, the smelting zone melt will become sticky, and the metallurgical process of melting matte just can't finely be carried out, according to silver stove blowing district self structure characteristics, when powdered coal burner satisfies above-mentioned technical requirements, the pulverized coal friring effect will be very desirable, and just can distinguish for blowing provides enough outer heat supplieds, thereby the metallurgical process that guarantees the melting matte can normally be carried out.
The whirlwind-type powdered coal burner 4 that is arranged at described silver copper bath smelting furnace settling region 5 has following feature: burner ability 1300～2000kg/h, 1 of burner number is once carried wind air quantity 2680～3200 Nm
3/ h once carries wind pressure 3000 Pa, once carries wind-warm syndrome degree normal temperature, and the secondary combustion air is oxygen-rich air, its air quantity 10700～12800 Nm
3/ h, secondary combustion air blast 5000 Pa, secondary combustion air temperature 150～250
0C.After blowing district melt enters settling region 5 through partition wall 3 passages, if there are not enough outer heat supplies, slag just can't thoroughly separate with copper, if pulverized coal friring is bad, whole settling region temperature will be on the low side, the settling region melt also can become sticky, slag separates bad with copper, finally cause the slag cupric higher, according to silver stove settling region self structure characteristics, when powdered coal burner satisfied above-mentioned technical requirements, the pulverized coal friring effect will be very desirable, just can be for the settling region provide enough outer heat supplieds, thus guarantee that settling region slag and the effective of copper separate.
The working process of described whirlwind-type powdered coal burner: cold wind and fine coal enter interior cover from the end of burner; Secondary hot-air enters overcoat from tangential direction, and outlet is provided with turning vane, and secondary hot-air is oxygen-rich air, and oxygen-rich concentration is 20～40%.The igniting oil gun can be installed in the burner middle part, the torch oil gun head is equipped with bluff body, the burner rear design has handwheel can regulate the position of bluff body, torch oil gun adopts the double-level-metal hose construction, bent, to be convenient in narrow space, insert and extract out, burner body adopts the qualitative carbon steel material, interior cover adopts resistant to elevated temperatures stainless material 1Cr18Ni9Ti, and interior cover powder feeding elbow adopts the wear-resistant liner stupalith.The structure of above-mentioned whirlwind-type powdered coal burner is formed and the installation site is formed and the installation site with the structure of conventional whirlwind-type powdered coal burner.
With reference to Fig. 1, the whirlwind-type powdered coal burner 1 that is arranged at described silver copper bath smelting furnace blowing district 2 is installed on the partition wall 3 in the described silver copper bath smelting furnace stove and is in the blowing district, and its mounted angle is 27 °; And the whirlwind-type powdered coal burner 4 that is arranged at described silver copper bath smelting furnace settling region 5 is installed on the side wall of stokehold, settling region, and mounted angle is 8 °.After powdered coal burner adopted above-mentioned mounting means, when fine coal burnt in blow district and settling region, flame was bold bright, and spreadability is good, can form normal furnace, thereby satisfies the needed outer heat supply requirement of silver stove melting matte.
The technical indicator of the fine coal that described powdered coal burner is selected for use is as follows: interior water＜1%, fugitive constituent 22～25%, ash＜16%, fixed carbon C＞58%, granularity-200 order＞85%, calorific value＞2.7 * 104 KJ/Kg.The quality of fine coal concerns whole combustion efficacy, if every index of fine coal does not reach requirement, pulverized coal friring will be incomplete, insufficient, the length of flame does not just reach requirement, just can not provide the melting of silver stove required outer heat supplied fully, thereby influence the whole fusion process of silver stove, therefore, the every index of the fine coal of silver burner must reach above-mentioned requirements.
Claims (3)
1. the powdered coal burner of silver copper bath smelting furnace special use is characterized in that: described powdered coal burner is selected the whirlwind-type powdered coal burner, and this whirlwind-type powdered coal burner is arranged at blowing district and the settling region of described silver copper bath smelting furnace respectively; The whirlwind-type powdered coal burner that is arranged at described silver copper bath smelting furnace blowing district has following feature: burner ability 1400～2000kg/h, 1 of burner number is once carried wind air quantity 3000～3200 Nm
3/ h once carries wind pressure 3000 Pa, once carries wind-warm syndrome degree normal temperature, and the secondary combustion air is oxygen-rich air, its air quantity 12000～12800 Nm
3/ h, secondary combustion air blast 5000 Pa, secondary combustion air temperature 150～250
0C;
The whirlwind-type powdered coal burner that is arranged at described silver copper bath smelting furnace settling region has following feature: burner ability 1300～2000kg/h, 1 of burner number is once carried wind air quantity 2680～3200 Nm
3/ h once carries wind pressure 3000 Pa, once carries wind-warm syndrome degree normal temperature, and the secondary combustion air is oxygen-rich air, its air quantity 10700～12800 Nm
3/ h, secondary combustion air blast 5000 Pa, secondary combustion air temperature 150～250
0C.
2. the powdered coal burner of a kind of silver copper bath smelting furnace according to claim 1 special use, it is characterized in that: the whirlwind-type powdered coal burner that is arranged at described silver copper bath smelting furnace blowing district is installed on the partition wall in the described silver copper bath smelting furnace stove and is in the blowing district, and its mounted angle is 27 °; And the whirlwind-type powdered coal burner that is arranged at described silver copper bath smelting furnace settling region is installed on the side wall of stokehold, settling region, and mounted angle is 8 °.
3. the powdered coal burner of a kind of silver copper bath smelting furnace according to claim 1 and 2 special use, it is characterized in that: the technical indicator of the fine coal that described powdered coal burner is selected for use is as follows: interior water＜1%, fugitive constituent 22～25%, ash＜16%, fixed carbon C＞58%, granularity-200 order＞85%, calorific value＞2.7 * 104 KJ/Kg.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210329227 CN102828045B (en) | 2012-09-07 | 2012-09-07 | Special pulverized coal burner for silver and copper molten pool smelting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210329227 CN102828045B (en) | 2012-09-07 | 2012-09-07 | Special pulverized coal burner for silver and copper molten pool smelting furnace |
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|---|---|
| CN102828045A CN102828045A (en) | 2012-12-19 |
| CN102828045B true CN102828045B (en) | 2013-08-21 |
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Citations (8)
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|---|---|---|---|---|
| CN85102902A (en) * | 1985-04-19 | 1986-10-15 | 北京有色冶金设计研究总院 | Process for boiling smelting |
| CN1033843A (en) * | 1988-05-14 | 1989-07-12 | 白银有色金属公司 | Oxygen-enriched copper smelting method and device for silver molten pool |
| WO1998014741A1 (en) * | 1996-10-01 | 1998-04-09 | Outokumpu Technology Oy | Method for feeding and directing reaction gas and solids into a smelting furnace and a multiadjustable burner designed for said purpose |
| CN1683825A (en) * | 2004-12-30 | 2005-10-19 | 云南锡业集团有限责任公司 | Secondary burning method and device in top blow sinking smelting process |
| CN101476045A (en) * | 2009-01-14 | 2009-07-08 | 宁波金田铜业(集团)股份有限公司 | Method for smelting copper |
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| JP5086422B2 (en) * | 2005-05-26 | 2012-11-28 | 株式会社エヌ・ティ・ティ・ドコモ | Method and apparatus for encoding motion and prediction weighting parameters |
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| JP2712877B2 (en) * | 1991-05-17 | 1998-02-16 | 住友金属鉱山株式会社 | Operating method of flash smelting furnace |
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2012
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|---|---|---|---|---|
| CN85102902A (en) * | 1985-04-19 | 1986-10-15 | 北京有色冶金设计研究总院 | Process for boiling smelting |
| CN1033843A (en) * | 1988-05-14 | 1989-07-12 | 白银有色金属公司 | Oxygen-enriched copper smelting method and device for silver molten pool |
| WO1998014741A1 (en) * | 1996-10-01 | 1998-04-09 | Outokumpu Technology Oy | Method for feeding and directing reaction gas and solids into a smelting furnace and a multiadjustable burner designed for said purpose |
| CN1683825A (en) * | 2004-12-30 | 2005-10-19 | 云南锡业集团有限责任公司 | Secondary burning method and device in top blow sinking smelting process |
| JP5086422B2 (en) * | 2005-05-26 | 2012-11-28 | 株式会社エヌ・ティ・ティ・ドコモ | Method and apparatus for encoding motion and prediction weighting parameters |
| CN201442922U (en) * | 2008-12-11 | 2010-04-28 | 佟锦 | Energy-saving type superconductive bitumen heating device utilizing pulverized coal burner |
| CN101476045A (en) * | 2009-01-14 | 2009-07-08 | 宁波金田铜业(集团)股份有限公司 | Method for smelting copper |
| CN102425786A (en) * | 2011-11-24 | 2012-04-25 | 舒瑞 | Combustion method and device for pulverized coal fired boiler |
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