CN202420198U - Smelting device and swirl nozzle - Google Patents
Smelting device and swirl nozzle Download PDFInfo
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- CN202420198U CN202420198U CN 201220018455 CN201220018455U CN202420198U CN 202420198 U CN202420198 U CN 202420198U CN 201220018455 CN201220018455 CN 201220018455 CN 201220018455 U CN201220018455 U CN 201220018455U CN 202420198 U CN202420198 U CN 202420198U
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- reaction gas
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- swirl nozzle
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Abstract
The utility model discloses a smelting furnace and a swirl nozzle. The disclosed swirl nozzle comprises a material channel (13) and a first reaction gas channel (14), which are arranged from outside to inside, wherein the top parts of the material channel (13) and the first reaction gas channel (14) are not communicated; a fluidization feeder (16) is mounted at an inlet of the material channel (13); and a swirl generation device is arranged in the first reaction gas channel (14). Since an oxygen gun of the swirl nozzle is not provided with a pulsation device any more, the structure becomes simpler and the reliability of the smelting process can be further improved.
Description
Technical field
The utility model relates to metallurgical technology field such as copper, nickel, lead, and particularly a kind of swirl nozzle also relates to a kind of smelting device that comprises this swirl nozzle.
Background technology
Copper mainly is sulphide ore and oxide ore at occurring in nature, and particularly the sulphide ore distribution is the widest, and nearly 80% copper mine exists with Cu-Fe-S ore form.Refining metallic copper adopts the method for pyrometallurgy usually in this type ore; The general flow of pyrometallurgy is: copper sulfide ore → selecting and purchasing operation → copper concentrate → melting operation → matte → blowing operation → blister copper → anode furnace operation → anode copper → electrowinning process → Cu-CATH-1.The melting operation mainly contains flash smelting and bath smelting two big classes at present, because of advantages such as flash smelting has efficiently, energy-saving and environmental protection, so the copper of the world today more than 60% is by the flash smelting explained hereafter; The flash smelting technological principle is: by the complete dispersion suspension of distribution wind, the concentrate particle of oxygen and suspension reacts in the whole space of reaction tower dry copper concentrate powder particle in reaction tower; There is following problem in this technology: the one, and be reflected at entire reaction tower space and carry out, so thermic load is big, the furnace wall is washed away seriously, the stove life-span is short; The 2nd, because of there is dispersion suspension in the concentrate particle, so the collision probability is little between particle, reaction is incomplete, and material peroxidating and oxygen debtization phenomenon are also deposited, and the flue dust incidence is high; The 3rd, the high thermic load that feeds intake under the situation is big especially, and general thermic load surpasses 2200MJ/m
3.h the time, the reaction tower of flash stove holds can't stand, so limited the high production capacity of separate unit flash stove.
Chinese patent document CN101705369A discloses a kind of pulsation vortex nozzle, utilizes this nozzle can dried material and reacting gas (gas that oxygen-enriched air, pure oxygen or other and material react) be sent into respectively in the reaction tower of smelting furnace; This technical scheme makes gas-solid two phase amalgams get in the reaction tower of smelting furnace with the mode of rotation at a high speed through the cyclone that is installed in the nozzle, and in reaction tower, forming with the reaction tower axis is the mixing rotary fluid at center.Pulsation oxygen rifle also is set in the middle of nozzle simultaneously infeeds oxygen with axial location at reaction tower.
The reason that the pulsation vortex nozzle that prior art provides is provided with pulsation oxygen rifle is: based on the traditional understanding of people to central diffused concentrate burner, need mend into oxygen in the centre position, to guarantee the supply of oxygen; As in " development course of flash smelting concentrate burner and production practices thereof " disclosed central diffused concentrate burner, oxygen pipe in the middle of just being provided with is through the supply of middle oxygen protection of pipe oxygen; In reaction tower, move in a spiral manner based on mixing rotary fluid, the centre of the disclosed pulsation vortex nozzle of Chinese patent document CN101705369A is provided with pulsation oxygen rifle.Pulsation oxygen rifle supply response gas can produce the active force of certain frequency, and then the inwall of reaction tower is produced the power of agitating of certain frequency; Thisly agitate the inwall that masterpiece is used for reaction tower, cause coming off of wall hanging slag in the reaction tower easily; And coming off of wall hanging slag just makes the reaction tower inwall lose protective layer in the reaction tower; And then carrying out high inventory production, when producing a large amount of reaction heat in the reaction tower, the wall that reaction heat will the injury response tower shortens service life of reaction tower.In addition, because the existence of pulsation oxygen rifle, the panting action of reacting gas also transfers vibrations to waste heat boiler through molten bath and smokejack easily, causes waste heat boiler to produce vibration, produces potential safety hazard.
The utility model content
For this reason, the utility model purpose is to provide a kind of and can adapts to high inventory and produce swirl nozzle.Providing on the basis of this swirl nozzle, the utility model also provides a kind of smelting device that comprises this swirl nozzle.
The swirl nozzle that the utility model provides comprises the material channel and first reaction gas passage that ecto-entad is arranged; Said material channel is sleeved on outside first reaction gas passage, and the two top is not connected; In material channel import department the fluidisation dispenser is installed; In said first reaction gas passage eddy flow generating means is set; Swirl nozzle palsating equipment no longer is set.In the swirl nozzle that the utility model provides; Owing to do not have palsating equipment, just can avoid because the vibration that pulsation produces makes the reaction tower inwall can keep the extension slag of respective thickness better; Form the protective layer of reaction tower, reduce the damage of reaction heat the reaction tower inwall; In addition, owing to do not have the oxygen rifle of pulsing, can avoid reacting gas vibration, the vibration that reduces to smelt body of heater and waste heat boiler, the security of raising metal smelt owing to the pulsation generation.
In further technical scheme, said material channel middle part can form the contraction of venturi nozzle shape, and the bottom can be provided with the water-cooled element or form with exotic material.
Said first reaction gas passage can be docked with technology oxygen-enriched air pipeline through two branch pipe(tube)s, can be separately installed with control valve on two branch pipe(tube)s.
Said material channel lower end can be lower than the lower end of said first reaction gas passage.
Choke can be formed at the said first reaction gas passage bottom; On direction from the top down, the channel cross-section of said choke reduces gradually.
Said first reaction gas passage can be cylindricality, also suitable structure can be set in the centre, and first reaction gas passage forms loop configuration.When first reaction gas passage is set to loop configuration, in the first reaction gas passage inboard second reaction gas passage can be set, the center line of said first reaction gas passage passes said second reaction gas passage.Like this, second reaction gas passage can be mended to reaction tower from the centre and gone into reacting gas, the reaction mass in the assurance reaction tower between material and the reacting gas.In said second reaction gas passage, fuel gun can also be set, to infeed fuel.
The smelting device that the utility model provides comprises smelts body of heater and nozzle, and said smelting body of heater comprises reaction tower, molten bath and the smokejack that links to each other with the molten bath; Said nozzle is installed in the top of reaction tower, and said nozzle is above-mentioned any swirl nozzle; Owing to have this swirl nozzle, smelting device also has corresponding technique effect.
Description of drawings
Fig. 1 is the operation principle sketch map of the swirl nozzle that provides of the utility model embodiment one; For the convenience of describing, the structure of the reaction tower of smelting furnace is shown simultaneously among the figure.
Fig. 2 is the swirl nozzle structural representation that the utility model embodiment two provides.
The specific embodiment
Below in conjunction with accompanying drawing the technical scheme that the utility model provides is described in detail, the description of this part only is exemplary and indicative, should not be regarded as the restriction to the utility model public technology content.Should be noted that: in the presents, said " on ", the D score noun of locality is to serve as with reference to confirming with the swirl nozzle user mode.
As shown in Figure 1; The swirl nozzle that the utility model embodiment one provides by central lines, inside and outside two tubular structures being sleeved on together form; The space that the inside of inner core forms between the internal face of first reaction gas passage 14, inner tank theca face and urceolus forms material channel 13, forms the material channel 13 and first reaction gas passage 14 that ecto-entad is arranged.First reaction gas passage 14 is not connected with material channel 13 tops.Also show the smelting body of heater among the figure, smelt body of heater and comprise reaction tower 9, molten bath and smokejack (not shown).Swirl nozzle is installed in the top of reaction tower 9; The lower end of first reaction gas passage 14 and material channel 13 reaction tower 9 respectively communicates.
In first reaction gas passage 14 the eddy flow generating means is set, like this at reacting gas when first reaction gas passage 14, the eddy flow generating means can convert reacting gas into swirling eddy, and then can infeed reacting gas with cyclone mode to reaction tower 9.The rotational flow generator that the eddy flow generating means can provide for prior art.As shown in the figure, in this example, rotational flow generator comprises two branch pipe(tube)s; Specifically be that two branch pipe(tube)s dock with first reaction gas passage, 14 tops in both sides respectively; Two branch pipe(tube)s get into first reaction gas passage 14 through the air inlet of arranged tangential respectively, make reacting gas in first reaction gas passage 14, form swirling eddy.Article two, be separately installed with suitable control valve on the branch pipe(tube); Get into the speed of first reaction gas passage 14 with conditioned reaction gas, and then regulate swirling eddy speed.
The operation principle of utilizing above-mentioned swirl nozzle to carry out the copper smelting is:
The material of powdery and reacting gas are sent into swirl nozzle respectively.When reacting gas passed through first reaction gas passage 14, the eddy flow generating means converted reacting gas into swirling eddy, and reacting gas is infeeded in the reaction tower 9 with the mode of swirling eddy.Material gets in the reaction tower 9 through material channel 13.In reaction tower 9, material mixes with reacting gas, and the reacting gas that exists with the eddy flow form drives material shape motion in the shape of a spiral, and contact with high-temperature flue gas in the reaction tower 9, and formation is the high rotary fluid 5 at center with the axis in reaction tower 9.The material particles that is blended in the high rotary fluid 5 is reached ignition temperature by the high-temperature flue gas heating; Violent chemical reaction takes place with the oxygen molecule in the same heated reacting gas around it; The huge heat energy that reaction produces is controlled by high rotary fluid 5, the material particles (solvent particles) of not participating in reaction is melted be the fusion droplet; Simultaneously, the heat of reaction generation also can make high rotary fluid 5 rapid expansion.Like this; Expand, under the effect of rotation centripetal force, high rotary fluid 5 makes the mutual collision probability of droplet after reaction and the fusing become the growth of how much multiples, the drop that collides after growing up separates from high rotary fluid 5 under gravity and action of centrifugal force; In the molten bath of isolated droplet settling under reaction tower 9; In the molten bath, further accomplish the slag making reaction, and rely on different proportion, the separation of the separation of realization matte, slag or blister copper, slag.Generate SO
2Under the effect of air-introduced machine draft, enter into waste heat boiler and acid making system carries out heat energy and SO from the smokejack of metallurgical furnace
2Recovery.
In the swirl nozzle that embodiment one provides; Owing to do not have palsating equipment, just can avoid because the vibration that pulsation produces makes reaction tower 9 inwalls can keep the extension slag of respective thickness better; Form the protective layer of reaction tower 9 inwalls, reduce the damage of reaction heat reaction tower 9 inwalls; In addition, owing to do not have pulsation oxygen rifle, can avoid the reacting gas vibration owing to the pulsation generation, the vibration that reduces to smelt body of heater and waste heat boiler improves the security and the reliability of metal smelt.
Reacting gas can be selected according to actual conditions, and such as being oxygen-enriched air, it contains oxygen can be between 50%～99%.This swirl nozzle is not only applicable to copper and smelts, and is equally applicable to nickel smelting or plumbous the smelting.Utilize this swirl nozzle, can improve the collision probability between material and the reacting gas equally, it is high to improve coefficient of oxygen utilization, reduces the flue dust incidence; Improve the production capacity of smelting device, cut down the consumption of energy.
In this example, material channel 13 lower ends (urceolus lower end) is lower than the lower end (inner core lower end) of said first reaction gas passage 14; In nozzle, form the space that a material and reacting gas tentatively mix like this, and then carry from good prerequisite for the reaction of material.In order to improve the reacting gas spouting velocity, the rotary speed when the raising reacting gas leaves inverse gas passage 14 can also form choke in first reaction gas passage, 14 bottoms; On downward down direction, the channel cross-section of choke is reduced gradually.
In this example, first reaction gas passage 14 is formed in the inner core, and promptly first reaction gas passage 14 is a column construction; Be appreciated that first reaction gas passage 14 also can be annular.Like Fig. 2, swirl nozzle also comprises central tube 11, and central tube 11 is arranged in first reaction gas passage 14, and then reacting gas only moving between central tube 11 and inner core, makes first reaction gas passage 14 form loop configuration; This structure more helps rotatablely moving of reacting gas, helps the formation and the maintenance of swirling eddy.
As shown in Figure 2, also can in central tube 11, form a gas and infeed passage, this infeeds passage can be called second reaction gas passage 10; And the center line that makes first reaction gas passage 14 passes second reaction gas passage 10.Like this, second reaction gas passage 10, first reaction gas passage 14 and material channel 13 form the structure of order suit from inside to outside; In the optimal technical scheme, make three's central lines.Can in reaction tower 9, infeed pure oxygen, oxygen-enriched air or other reacting gas through second reaction gas passage 10, to replenish the core oxygen consumption of high rotary fluid 5, material in the raising reaction tower 9 and the reaction mass between the reacting gas with the direct current mode.As shown in Figure 2, in second reaction gas passage 10, fuel gun 12 can also be set, fuel gun 12 is stretched into along the center line of central tube 11; Like this, can guarantee to react continuation in the reaction tower 9 starting or in reaction tower 9, infeeding fuel during low temperature through fuel gun 12.
The smelting device that the utility model provides comprises smelts body of heater and nozzle, and said smelting body of heater comprises reaction tower 9, molten bath and the smokejack that links to each other with the molten bath; Said nozzle is installed in the top of reaction tower 9; Said nozzle can be above-mentioned any swirl nozzle.
Used concrete example among this paper the technical scheme that the utility model provides is set forth, the explanation of above embodiment just is used to help to understand the technical scheme that the utility model provides.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. a swirl nozzle is characterized in that, comprises material channel (13) and first reaction gas passage (14) that ecto-entad is arranged; The top of said material channel (13) and first reaction gas passage (14) is not connected; In material channel (13) import department fluidisation dispenser (16) is installed; In said first reaction gas passage (14) the eddy flow generating means is set.
2. swirl nozzle as claimed in claim 1 is characterized in that, said material channel (13) middle part forms the contraction structure of venturi nozzle shape, and the bottom is provided with the water-cooled element or forms with exotic material.
3. swirl nozzle as claimed in claim 1 is characterized in that, said first reaction gas passage (14) is docked with technology oxygen-enriched air pipeline through two branch pipe(tube)s, is separately installed with control valve on two branch pipe(tube)s.
4. like any described swirl nozzle of claim 1 to 3, it is characterized in that said material channel (13) lower end is lower than the lower end of said first reaction gas passage (14).
5. like any described swirl nozzle of claim 1 to 3, it is characterized in that choke is formed at said first reaction gas passage (14) bottom; On direction from the top down, the channel cross-section of said choke reduces gradually.
6. like any described swirl nozzle of claim 1 to 3, it is characterized in that said first reaction gas passage (14) is a cylindricality.
7. like any described swirl nozzle of claim 1 to 3, it is characterized in that said first reaction gas passage (14) is an annular.
8. swirl nozzle as claimed in claim 7 is characterized in that, said first reaction gas passage (14) inboard is provided with second reaction gas passage (10), and the center line of said first reaction gas passage (14) passes said second reaction gas passage (10).
9. swirl nozzle as claimed in claim 8 is characterized in that, in said second reaction gas passage (10), also is provided with fuel gun (12).
10. a smelting device comprises and smelts body of heater and nozzle, and said smelting body of heater comprises reaction tower (9), molten bath and the smokejack that links to each other with the molten bath; Said nozzle is installed in the top of reaction tower; It is characterized in that said nozzle is each described swirl nozzle of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220018455 CN202420198U (en) | 2012-01-16 | 2012-01-16 | Smelting device and swirl nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220018455 CN202420198U (en) | 2012-01-16 | 2012-01-16 | Smelting device and swirl nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202420198U true CN202420198U (en) | 2012-09-05 |
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ID=46744955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220018455 Expired - Lifetime CN202420198U (en) | 2012-01-16 | 2012-01-16 | Smelting device and swirl nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202420198U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914164A (en) * | 2012-09-26 | 2013-02-06 | 金川集团股份有限公司 | Nickel-making oxygen-enriching top-blowing immersion spray gun with longer service life |
| CN104634101A (en) * | 2015-02-13 | 2015-05-20 | 阳谷祥光铜业有限公司 | Same-direction rotary-floating smelting method, nozzle and metallurgical equipment |
| CN104634102A (en) * | 2015-02-13 | 2015-05-20 | 阳谷祥光铜业有限公司 | Reverse spin floating smelting method, nozzle and metallurgical equipment |
-
2012
- 2012-01-16 CN CN 201220018455 patent/CN202420198U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914164A (en) * | 2012-09-26 | 2013-02-06 | 金川集团股份有限公司 | Nickel-making oxygen-enriching top-blowing immersion spray gun with longer service life |
| CN104634101A (en) * | 2015-02-13 | 2015-05-20 | 阳谷祥光铜业有限公司 | Same-direction rotary-floating smelting method, nozzle and metallurgical equipment |
| CN104634102A (en) * | 2015-02-13 | 2015-05-20 | 阳谷祥光铜业有限公司 | Reverse spin floating smelting method, nozzle and metallurgical equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |