CN105861834B - A kind of eddy flow Flash Smelting technique - Google Patents
A kind of eddy flow Flash Smelting technique Download PDFInfo
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- CN105861834B CN105861834B CN201610280697.1A CN201610280697A CN105861834B CN 105861834 B CN105861834 B CN 105861834B CN 201610280697 A CN201610280697 A CN 201610280697A CN 105861834 B CN105861834 B CN 105861834B
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- miberal powder
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
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Abstract
The invention provides a kind of eddy flow Flash Smelting technique, comprise the following steps：1) raw material prepares：Raw ore and flux are crushed and dried；2) eddy flow is manufactured：Reacting gas is sprayed into Flash Smelting Furnace high speed by the air-flow gatherer set in flash furnace reaction tower side wall and brings heat into, eddy flow area is formed in reaction tower, and the hot environment for making reaction tower form 1000 DEG C~1450 DEG C；3) material feeds；4) eddy flow is smelted.On the one hand eddy flow Flash Smelting technique of the present invention can extend the track of miberal powder whereabouts, miberal powder and reacting gas is set there are more touch opportunities, so as to improve the chemical reaction efficiency of miberal powder and reacting gas in reaction tower space, the efficiency of miberal powder and the utilization rate of reacting gas are improved；On the other hand the dispersion effect of miberal powder can be optimized, make miberal powder by particle size from reaction tower center to edge ordered arrangement, avoid accumulation of the material in Flash Smelting Furnace centre.
Description
Technical field
The invention belongs to Flash Smelting field, more particularly, to a kind of eddy flow Flash Smelting technique.
Background technology
At present Flash Smelting Furnace, the main material (such as miberal powder, oxygen, flux) for participating in reaction is all from positioned at anti-
Answer the nozzle of top of tower to add in stove, because the space of nozzle interior is limited, the devices such as scattered cone are employed when feeding intake
Material is disperseed, but the actual dispersion effect of material is unsatisfactory.Further, since Flash Smelting Furnace airflow direction is from reaction tower
Flue through molten bath top ramps up the flowing of flue direction, the falling direction of material and air flow direction almost phase in reaction tower
Together, thus miberal powder suspend fall track it is shorter, space smelt effect it is limited.
At present, also having tried to manufacture the mode of eddy flow around the nozzle at the top of reaction tower enables material preferably to disperse
And batch mixing, but the diameter of the lateral dimension relative response tower of nozzle is smaller, and eddy flow is after nozzle enters reaction tower, one side eddy flow
The centre of reaction tower is concentrated mainly on, on the other hand as the whereabouts of material, the energy of eddy flow are decayed rapidly, material dispersion
With space smelt effect promoting it is limited.
The content of the invention
In view of this, the present invention is directed to propose a kind of eddy flow Flash Smelting technique, is divided with solving existing Flash Smelting Furnace material
Scattered effect is bad, and material is too short in reaction tower space fall trajectory, fails to make full use of space to carry out the problems such as the smelting that suspend.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of eddy flow Flash Smelting technique, comprises the following steps：
1) raw material prepares：Raw ore and flux are crushed and dried；I.e. by crushing raw ore into miberal powder and drying, and by flux
Crushed and dried；
2) eddy flow is manufactured：By the air-flow gatherer that is set in the side wall of flash furnace reaction tower 1 to Flash Smelting Furnace high speed
Spray into reacting gas and bring heat into, eddy flow area is formed in reaction tower 1, and reaction tower 1 is formed 1000 DEG C~1450 DEG C
Hot environment；
3) material feeds：Fine ore after crushing and flux are added sudden strain of a muscle by being arranged on the charging gear 2 at the top of reaction tower 1
In fast stove；
4) eddy flow is smelted：Fine ore enter reaction tower 1 after, by eddy flow area, be sufficiently stirred by air-flow, on the one hand make miberal powder and
Air-flow sufficiently mixes, and using the big characteristic of mineral powder granular specific surface area, by quickly conducting heat, mass transfer, miberal powder is in quilt rapidly
While being heated to 800 DEG C of high temperature above, quickly chemically reacted with reaction gas flow, on the other hand, eddy flow makes fine ore spiral shell
Screw off, extend fall trajectory of the miberal powder in the space of reaction tower 1, make reaction more abundant, meanwhile, also enable the orderly disperse of miberal powder
To reaction tower everywhere.
On multiple horizontal cross-sections of reaction tower 1, multiply air-flow enters reaction tower 1 with speed at a certain angle, runs into anti-
It is forced to make gyration after answering tower wall, forms eddy flow, the multiply eddy flow in reaction tower 1 from top to bottom forms eddy flow area, miberal powder
Into after reaction tower, due to being influenceed by high speed swirling eddy, tangential rotary motion is produced along airflow direction in the horizontal direction,
And under the collective effect of self gravitation, downward spiral motion；Because the quality of miberal powder is different, suffered centrifugal force is different, greatly
Centrifugal force suffered by particle miberal powder is big, gas-flow resistance can be overcome to be moved to tower wall, and the centrifugal force suffered by little particle miberal powder is small,
Gyration and close to tower wall is not done with air-flow, during miberal powder rotation is fallen, bulky grain continues to disperse to periphery, and
Little particle is then closer to central area, on the horizontal cross-section of reaction tower 1, the grain diameter of miberal powder by center to tower wall direction more next
It is bigger, layered distribution is formed by particle size, so that miberal powder orderly disperse and can be contacted fully with reacting gas.Together
When, the distance of the big particle spiral-falling of particle diameter in miberal powder, the chance contacted with reacting gas is more, particulate central portion with
The chemical reaction of reacting gas also more fully, solves bulky grain miberal powder space metallurgical effect in flash smelting to a certain extent
The shortcomings that poor.
Further, in step 1) by original ore powder drying to aqueous less than 0.3%, wherein, 0.3% is mass percent.
Dry purpose is that after entering Flash Smelting Furnace for the moisture for preventing from containing in miberal powder, water membrane is formed around mineral powder granular,
Reactant gas molecules are prevented to the diffusion inside mineral powder granular.Flux, which must be also dried to containing water quality, in step 1) is less than 1%.
Further, in step 1) by crushing raw ore into miberal powder, the ratio that 200 mesh are less than to particle diameter is more than 50%, wherein,
50% is number percentage.The purpose of crushing raw ore is formed into the mineral powder granular of small particle, on the one hand utilizes miberal powder and reaction
The big characteristic of specific surface area of gas contact, by quickly conducting heat and mass transfer, make to enter miberal powder in Flash Smelting Furnace and be brought rapidly up simultaneously
Quickly chemical reaction occurs with gas；Another aspect miberal powder entirety particle diameter is smaller, is easy to drive spiral-falling by eddy flow, helps
In the mixing of reacting gas and miberal powder and disperseing for miberal powder.
Further, by the size distribution of miberal powder after crushing raw ore such as following table in step 1)：
| Granularity/mesh | 10~20 | 20~100 | 100~200 | 200~300 | ＜ 300 |
| Number ratio (%) | 5 | 10 | 25 | 45 | 15 |
The miberal powder of different-grain diameter centrifugal force suffered in eddy flow is different, the excentric position on the circumferential section of reaction tower 1
Putting also difference, the size distribution for having certain dispersion contributes to disperse orderly in eddy flow of the miberal powder in reaction tower 1.
Further, a kind of compensation process of the hot environment of 1000 DEG C~1450 DEG C of the formation of reaction tower 1 is made in step 2)
It is to provide heat by the fuel nozzle 6 being arranged on the reaction tower 1 for reaction tower 1.If spray into reacting gas temperature compared with
It is low, and the chemical reaction occurred between gas and miberal powder is not strong exothermal reaction, then need for the additional heat of reaction tower 1, to pass through fuel
The fuel heat release such as the combusting heavy oil of burner 6 or natural gas is a kind of relatively effective method, it is of course also possible to be pushed up by reaction tower 1
The charging gear in portion adds coal and oxygen into reaction tower 1, and required heat is provided for reaction tower 1 using the reaction of coal oxygen.
Further, the jet velocity of air-flow is 50~200m/s, preferably 100~150m/s in step 2), and air-flow sprays
Firing rate is spent can cause the speed of eddy flow inadequate slowly, the too fast tower wall that can wear reaction tower 1.By adjusting air-flow gatherer
Air pressure, the speed that air-flow is sprayed into reaction tower 1 can be controlled, can be adjusted flexibly according to demand in actual production.
Further, the air-flow gatherer is multigroup that every group is arranged on the different level of the side wall of reaction tower 1,
Every group includes multiple spray guns 3.The setting of multigroup spray gun 3 ensures the energy of eddy flow not on the side wall different level of reaction tower 1
It can decay rapidly, to ensure the dispersion effect of miberal powder.
Further, every group of gatherer includes 4 spray guns 3, offside parallel stagger setting two-by-two.The offside of spray gun 3 is two-by-two
The orderly eddy flow field that parallel stagger setting can be formed centered on the center of circle in the horizontal cross-section of reaction tower 1.
Further, the spray gun 3 in every group of gatherer is along identical direction of rotation, in the same plane along center line
3 °~20 ° of skew.In the horizontal cross-section of reaction tower 1, identical direction of rotation is pressed along disalignment same angular by multiple spray guns 3
The setting of degree, the orderly eddy flow field that can also be formed in the horizontal cross-section of reaction tower 1 centered on the center of circle.
Further, the air-flow that the air-flow gatherer imports is reducibility gas caused by coal gas or metallurgy, change
Industrial and commercial bank's industry pyrometallurgical smelting tail gas.Preferably blast furnace gas, coal gas of converter, coke-stove gas, electric furnace (mineral hot furnace) tail gas, rotary kiln
Tail gas, rotary hearth furnace tail gas etc.；Using above-mentioned industrial waste gas as gas is smelted, on the one hand make waste gas net by tail gas again
Change handling process, substantially reduce the investment of original production process, on the other hand reduce the production of metallurgical technology of the present invention
Cost, the circulation comprehensive for realizing resource are utilized, turned waste into wealth.
Relative to prior art, eddy flow Flash Smelting technique of the present invention has the advantage that：
On the one hand eddy flow Flash Smelting technique of the present invention can make miberal powder produce the effect of spiral-falling, extend
The track that miberal powder falls, makes the touch opportunity of miberal powder and reacting gas more, is being reacted so as to improve miberal powder and reacting gas
The chemical reaction efficiency in tower space, improve the efficiency of miberal powder and the utilization rate of reacting gas；On the other hand can optimize
The dispersion effect of miberal powder and the mixed effect with reacting gas, miberal powder is set to be arranged in order from reaction tower center to edge by particle size
Cloth, avoid accumulation of the material in Flash Smelting Furnace centre.
Eddy flow Flash Smelting technique of the present invention sets multigroup air-flow gatherer on reaction tower side wall, using more
Stock air-flow injects at a high speed flash furnace reaction tower at an angle, eddy flow is formed, relative to the eddy flow system in present Flash Smelting Furnace field
Mode (such as pass through nozzle interior in tower top and manufacture eddy flow) is made, caused eddy flow scope (radius and length) is more in reaction tower
Greatly, the speed of eddy flow faster, is disperseed caused by eddy flow and mixed effect is more preferable, make miberal powder while spiral-falling, by particle diameter
Size is from reaction tower center to edge ordered arrangement, while eddy flow manufacture device is simple in construction, flexibly easily regulation；It is particularly suitable for needing
First gas making is wanted to be re-introduced into the technique for carrying out space smelting in reaction tower, if the Flash Smelting of metal oxide ore is, it is necessary to first pass through coal
Gas production reducing atmosphere (CO+H processed2), it is re-introduced into stove and reduction reaction occurs with miberal powder, metallurgical, chemical industry can also be introduced directly into
The pyrometallurgical smelting tail gas containing reducing atmosphere of industry, accomplishes to turn waste into wealth, realizes the comprehensive reutilization of resource.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structure of the one group of air-flow gatherer used in the eddy flow Flash Smelting technique described in the embodiment of the present invention
Schematic diagram；
Fig. 2 be the embodiment of the present invention described in eddy flow Flash Smelting technique in use one group of air-flow gatherer it is another
Kind structural representation；
Fig. 3 is the structural representation of the Flash Smelting Furnace used in the eddy flow Flash Smelting technique described in the embodiment of the present invention.
Description of reference numerals：
1- reaction towers；2- charging gears；3- spray guns；4- uptake flues；5- molten baths；6- fuel nozzles.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction or hint phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of eddy flow Flash Smelting technique, comprises the following steps：
1) raw material prepares：Raw ore and flux are crushed and dried；
2) eddy flow is manufactured：By the air-flow gatherer that is set in the side wall of flash furnace reaction tower 1 to Flash Smelting Furnace high speed
Spray into reacting gas and bring heat into, eddy flow area is formed in reaction tower 1, and reaction tower 1 is formed 1000 DEG C~1450 DEG C
Hot environment；
3) material feeds：Fine ore after crushing and flux are added sudden strain of a muscle by being arranged on the charging gear 2 at the top of reaction tower 1
In fast stove；
4) eddy flow of miberal powder is smelted：After fine ore enters reaction tower 1, by eddy flow area, it is sufficiently stirred by air-flow, on the one hand makes
Miberal powder and air-flow sufficiently mix, and using the big characteristic of mineral powder granular specific surface area, by quickly conducting heat, mass transfer, miberal powder exists
While being quickly heated to 800 DEG C of high temperature above, quickly chemically reacted with reacting gas, on the other hand, eddy flow makes
Make fine ore spiral-falling, extend fall trajectory of the miberal powder in the space of reaction tower 1, make reaction more abundant, meanwhile, also enable miberal powder
Orderly is distributed to reaction tower everywhere.
If sulphide ore, reacting gas is oxygen-containing gas in step 2)：Air, oxygen rich gas or technique oxygen.If oxidation
Ore deposit, reacting gas is containing CO, H in step 2)2With the one or more in hydrocarbon gas；Preferably, it is metallurgical, chemical industry
Industry pyrometallurgical smelting tail gas etc. (such as blast furnace gas, coke-stove gas, electric furnace method yellow phosphorus tail gas).
Charging gear 2 is nozzle in the present embodiment.Reaction tower 1 is provided with fuel nozzle 6, fuel nozzle 6 in the present embodiment
Setting can be reaction tower 1 in provide heat.The air-flow sprayed into by air-flow gatherer forms high-speed rotational area, from reaction
When the miberal powder that the nozzle at the top of tower 1 adds falls into eddy flow area, influenceed by eddy flow, powdery miberal powder spiral-falling is finally orderly
Disperse in the reaction tower space of Flash Smelting Furnace, on the one hand, make miberal powder by particle size from reaction tower center to the orderly row in edge
Cloth, miberal powder have been obtained scattered well and can be sufficiently mixed with reacting gas, promote being rapidly performed by for chemical reaction, another
Aspect, the spiral-falling of miberal powder extend the track that miberal powder falls in Flash Smelting Furnace space, the efficiency increase for smelting space suspension,
Reduce energy consumption；Reacted melt is fallen in the molten bath 5 of the lower section of reaction tower 1, the gangue content in miberal powder and charging gear 2
The slag making in molten bath 5 of the flux of addition, the metal obtained after smelting (or sulfonium) form slag blanket and crude metal after being separated with slag precipitation
Layer (or matte layer), during caused flue gas discharged by uptake flue 4.
According to one embodiment of present invention, in step 1) by original ore powder drying to aqueous less than 0.3%, it is preferably aqueous
Less than 0.1%.To prevent from being formed moisture film around mineral powder granular, reactant gas molecules are prevented to inside solid or liquid particles
Diffusion.
According to one embodiment of present invention, in step 1) by crushing raw ore into miberal powder, the ratio of 200 mesh is less than to particle diameter
More than 50%.Preferably miberal powder particle diameter is both less than 200 mesh.
According to one embodiment of present invention, by the size distribution of miberal powder after crushing raw ore such as following table in step 1)：
| Granularity/mesh | 10~20 | 20~100 | 100~200 | 200~300 | ＜ 300 |
| Number ratio (%) | 5 | 10 | 25 | 45 | 15 |
According to one embodiment of present invention, the jet velocity of air-flow is 50~200m/s.Preferably 100~150m/s,
Jet-impingement speed can cause that the speed of eddy flow is inadequate, and the too fast tower wall that can make reaction tower is damaged slowly excessively.The jet velocity of air-flow
Preferably 110m/s, 120m/s, 130m/s, 140m/s.
According to one embodiment of present invention, the charging gear 2 is arranged on furnace roof.
According to one embodiment of present invention, the air-flow gatherer is multigroup that every group is arranged on different level,
Every group includes multiple spray guns 3.
According to one embodiment of present invention, the spray gun 3 in every group of gatherer is uniformly arranged.
According to one embodiment of present invention, every group of gatherer includes 4 spray guns 3, offside parallel stagger setting two-by-two.
According to one embodiment of present invention, the spray gun 3 in every group of gatherer is along identical direction of rotation, same
3~20 ° of plane interior edge disalignment, preferably 8 °, 9 °, 10 °, 15 °, 18 °.
According to one embodiment of present invention, the air-flow that air-flow gatherer imports is reducibility gas caused by coal gas
Or metallurgical, chemical industry pyrometallurgical smelting tail gas.Preferably blast furnace gas, coal gas of converter, coke-stove gas, electric furnace (mineral hot furnace) tail
Gas, rotary kiln exhaust gas, rotary hearth furnace tail gas etc..
Lateritic nickel ore is smelted using eddy flow Flash Smelting technique provided by the invention：
1) raw material prepares：By lateritic nickel ore dry and dispersion be water content below 0.3%, granularity accounts for below 200 mesh
50% dry concentrate.Sludging flux is quick lime, and the aqueous 1%, granularity that is less than accounts for 90% less than 60 purposes；
2) eddy flow is manufactured：Six groups of air-flow gatherers, every group of importing are set from top to bottom in the side wall of flash furnace reaction tower 1
Device includes 4 spray guns 3, offside parallel stagger setting two-by-two, as shown in Figure 1；Coal gasification apparatus is provided near Flash Smelting Furnace, it is raw
Produce temperature about 1400 DEG C, pressure 2MPa, containing 70% (CO+H2) effectively also Primordial Qi composition reducibility gas；Pass through air-flow
The reducibility gas that gatherer produces coal gasification apparatus is sprayed into flash furnace reaction tower with 130m/s speed, forms one
Eddy flow area；
3) material feeds：Lateritic nickel ore miberal powder and quick lime are added flash by being arranged on the nozzle at the top of reaction tower 1
In stove, it is 1350 DEG C or so in maintenance reaction tower of hot environment because constantly there is cold burden to be added at the top of reaction tower, passes through weight
Oil or natural gas combustion nozzle are the upper supplementary heat of reaction tower 1, the material of entrance is heated rapidly heating；
4) eddy flow is smelted：After lateritic nickel ore miberal powder enters reaction tower 1, by eddy flow area, it is sufficiently stirred by air-flow, on the one hand
Increase the specific surface area of miberal powder and the contact of air-flow, by quickly conducting heat, mass transfer, miberal powder is same what is be quickly heated to
When, quickly chemically reacted with reaction gas flow, on the other hand, eddy flow makes miberal powder be fallen in the spatially spiral of reaction tower 1, extends
Miberal powder fall trajectory, makes it more with the touch opportunity of reducing atmosphere, improves NiO and ferriferous oxide in lateritic nickel ore miberal powder
Percent reduction so that before molten bath is eventually fallen into, 95% NiO is reduced into Ni, and 90% ferriferous oxide is reduced into FeO,
Also part metals iron is reduced out, meanwhile, lateritic nickel ore miberal powder is of different sizes due to particle diameter, the centrifugal force in eddy flow
Under effect, excentric position is also different on reaction tower horizontal cross-section, so that miberal powder can permeate into reaction tower in order
Everywhere.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (7)
- A kind of 1. eddy flow Flash Smelting technique, it is characterised in that：Comprise the following steps：1) raw material prepares：Raw ore and flux are crushed and dried, by mass percentage, by raw ore drying to aqueous 0.3% with Under, the miberal powder by crushing raw ore into different-grain diameter, the size distribution formed with certain dispersion, meanwhile, particle diameter is less than 200 mesh Ratio be more than 50%；2) eddy flow is manufactured：Sprayed by the air-flow gatherer set in flash furnace reaction tower (1) side wall to Flash Smelting Furnace high speed Enter reacting gas and bring heat into, eddy flow area is formed in reaction tower (1), and reaction tower (1) is formed 1000 DEG C~1450 DEG C Hot environment, wherein, the jet velocity of air-flow is 50~200m/s；3) material feeds：Fine ore after crushing and flux are dodged by being arranged on the charging gear (2) at the top of reaction tower (1) and adding In fast stove；4) eddy flow is smelted：After fine ore enters reaction tower (1), by eddy flow area, it is sufficiently stirred by air-flow, on the one hand makes miberal powder gentle Stream sufficiently mixing, using the big characteristic of mineral powder granular specific surface area, by quickly conducting heat, mass transfer, miberal powder is added rapidly While heat is to 800 DEG C of high temperature above, quickly chemically reacted with reacting gas, on the other hand, eddy flow makes fine ore spiral Fall, extend fall trajectory of the miberal powder in reaction tower (1) space, make reaction more abundant, meanwhile, also enable the orderly disperse of miberal powder To reaction tower (1) everywhere.
- 2. the eddy flow Flash Smelting technique described in claim 1, it is characterised in that：By the grain of miberal powder after crushing raw ore in step 1) Degree distribution is as follows：Granularity is that the miberal powder ratio of 10~20 mesh is 5%；Granularity is that the miberal powder ratio of 20~100 mesh is 10%；Granularity be 100~ The miberal powder ratio of 200 mesh is 25%；Granularity is that the miberal powder ratio of 200~300 mesh is 45%；Granularity is less than the miberal powder ratio of 300 mesh Example is 15%.
- 3. eddy flow Flash Smelting technique according to claim 1, it is characterised in that：Make reaction tower (1) formation in step 2) A kind of compensation process of 1000 DEG C~1450 DEG C of hot environment is the fuel nozzle by being arranged on the reaction tower (1) (6) heat is provided for reaction tower (1).
- 4. eddy flow Flash Smelting technique according to claim 1, it is characterised in that：The air-flow gatherer to be multigroup, Every group is arranged on the different level of reaction tower (1) side wall, and every group includes multiple spray guns (3).
- 5. eddy flow Flash Smelting technique according to claim 4, it is characterised in that：Every group of gatherer includes 4 spray guns (3), offside parallel stagger setting two-by-two.
- 6. eddy flow Flash Smelting technique according to claim 4, it is characterised in that：The spray gun in every group of gatherer (3) along identical direction of rotation, in the same plane along 3 °~20 ° of disalignment.
- 7. eddy flow Flash Smelting technique according to claim 1, it is characterised in that：The gas that the air-flow gatherer imports Flow for reducibility gas caused by coal gas or metallurgy, chemical industry pyrometallurgical smelting tail gas.
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| EP3889275A1 (en) * | 2020-03-31 | 2021-10-06 | Qiu, Jiangbo | Skyflash multiphase flow metallurgical furnace |
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| CN106521182B (en) * | 2016-11-02 | 2019-05-21 | 阳谷祥光铜业有限公司 | It is a kind of to revolve floating Copper making method and revolve floating Copper making device |
| CN106521181B (en) * | 2016-11-02 | 2019-05-21 | 阳谷祥光铜业有限公司 | It is a kind of to revolve floating lead smelting process and revolve floating lead smelting device |
| CN106521188B (en) * | 2016-11-02 | 2019-05-17 | 阳谷祥光铜业有限公司 | It is a kind of to revolve floating nickel fibers method and revolve floating nickel fibers device |
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| CN105861834A (en) | 2016-08-17 |
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