CN205717169U - A kind of oxide ore flash metallurgy dispenser - Google Patents
A kind of oxide ore flash metallurgy dispenser Download PDFInfo
- Publication number
- CN205717169U CN205717169U CN201620387021.8U CN201620387021U CN205717169U CN 205717169 U CN205717169 U CN 205717169U CN 201620387021 U CN201620387021 U CN 201620387021U CN 205717169 U CN205717169 U CN 205717169U
- Authority
- CN
- China
- Prior art keywords
- vaporizer
- spray gun
- dispenser
- oxide ore
- material inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
This utility model provides a kind of oxide ore flash metallurgy dispenser, and including vaporizer, spray gun, material inlet, spray gun is arranged on vaporizer, and penetrate vaporizer inwall, stretch in vaporizer, material inlet is set bottom vaporizer, and material inlet connects with vaporizer outlet at bottom.The advantage of oxide ore dispenser described in the utility model is: gas making, the process of intensification are isolated with to the process in ore deposit, it is ensured that reliable gas making and intensification；Gas making completes, after high-temperature reducing gas leaves vaporizer, can with the fastest speed of minimum distance with leave dispenser after raw material be sufficiently mixed so that reduction reaction can quickly occur, save the space of flash metallurgy smelting in suspension.
Description
Technical field
This utility model belongs to flash field of metallurgy, especially relates to a kind of oxide ore flash metallurgy feed
Device.
Background technology
In flash field of metallurgy, the charging gear comparative maturity of sulphide ore, as a example by the nozzle of copper Flash Smelting Furnace,
Its main task be dried powdery copper sulfide concentrate and oxygen-enriched air are sufficiently mixed after spray into sudden strain of a muscle
Speed stove, sulphide ore breeze and oxygen releases amount of heat while reacting, can realize autogenous smelting,
I.e. " single step reaction ".
And for the smelting of oxide ore, " single step reaction " is infeasible, it is necessary to first provide one and fill
The hot environment of full reducing atmosphere, just can make oxide ore that reduction reaction quickly occurs, how to accomplish this point,
Make full use of again the ultimate principle that flash is metallurgical simultaneously, be to realize the key technology that oxide ore flash is metallurgical.
Summary of the invention
In view of this, this utility model is directed to a kind of flash metallurgy oxide ore charging gear to flash
While furnace reaction tower feed, moreover it is possible to manufacture reducing gas and provide heat to reaction tower, making reaction turriform
Become the high temperature reduction environment that metallurgical performance is good, thus realize the space reduction melting of oxide ore.
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that
A kind of oxide ore flash metallurgy dispenser, including vaporizer, spray gun, material inlet, spray gun is arranged at
On vaporizer, and penetrate vaporizer inwall, stretch in vaporizer, material inlet is set bottom vaporizer, and
And material inlet connects with vaporizer outlet at bottom.Vaporizer is used for producing reducibility gas and carrying to Flash Smelting Furnace
Heating load；Spray gun is former in order to spray into oxygen-containing gas (air, oxygen-enriched, pure oxygen) and gas making in vaporizer
Expect such as: the combination of one or more in coal dust, water-coal-slurry, steam, natural gas, fuel oil, methane,
Oxygen-containing gas and gas making raw material produce reducibility gas after reacting and release heat；Spray gun can be single-pass
Road or multichannel, can only spray a kind of raw material, and such as oxygen or coal dust, multichannel spray gun also can be jetted many simultaneously
Plant raw material, as sprayed into oxygen and coal dust simultaneously；Material inlet is used for adding raw material and the adjuvant of metallurgical needs,
Such as mineral aggregate, flux etc..Dispenser described in the utility model by by vaporizer and material inlet integration
Connect and be integrated into an autonomous device, it is achieved gasification and the function of feed.
Further, described material inlet is arranged at vaporizer bottom level, equal around vaporizer outlet at bottom
Even layout, is configurable to 2 material inlets, or 3,4,6, the material inlets such as 8, its mesh
Be to make powder be sufficiently mixed with the gas of gas outlet.The diameter of material inlet is more than gasification floor chamber outlet
Diameter, blocks material inlet with the slag avoiding vaporizer to discharge, simultaneously, it is possible to reduce gasification chamber outlet gas
Pressure under Liu Xianging, and then reduce the injection speed that this oxide ore flash metallurgy dispenser outlet material is downward
Degree, additionally, expand the diameter of material inlet, to also contribute to material the most dispersed, it is to avoid material
Undue concentration is at middle part.Material enters bottom vaporizer from material inlet, can be fallen by flow by gravity, also
Compressed air, nitrogen or the pressurization such as oxygen-enriched can be used to send into.
Further, described material inlet is multiple structure.Multilamellar material inlet is set and can simplify dispensing flow process,
Reducing investment, when having plurality of raw materials or flux is necessarily drawn to mixed smelting, Normal practice is at raw material
Enter before Flash Smelting Furnace respectively after Weighing, then batch mixing, need to occupy the feed bin of big quantity space, belt conveyer scale,
The main equipments such as transfer station.And way that multilamellar material inlet can utilize wind fen-ting amount to carry is former each
Material is directly sent to material inlet, mixes in exit；Above-mentioned functions, if feeding coal is little, at monolayer
In feed, feed by the way of the material inlet different to different material distribution, also can realize.
Further, described material inlet discharging direction is little with the angle of vaporizer outlet at bottom airflow direction
In 90 °, it is emphasised that the discharging direction of material inlet is level or downward-sloping, stifled to prevent material from pouring in down a chimney
Plug discharging opening, or damage dispenser.
Further, around arranging cooling jacket, material inlet and tweer cincture between vaporizer and material inlet
Cooling jacket is set, its objective is to protect material inlet, prevent it by high temperature melting loss.
Further, described spray gun is arranged at vaporizer top.When a spray gun gas making amount or the heat of offer
Amount can not meet when requiring, is evenly arranged one group of spray gun in vaporizer top, the increase gas making that can smooth out
Amount or heat.
Further, described spray gun is many groups, and often group spray gun is arranged on different level, same level
Spray gun in face, offside is the most positioned opposite, and during use, arrange on vaporizer sidewall is real to spray gun
Existing fuel and oxygen to spray, to strengthen gas making effect, improve the utilization rate of gas making raw material.
Further, described spray gun is many groups, and often group spray gun is arranged on different level, same level
Spray gun in face, the most parallel setting of staggering of offside.Arrangement above can make gasification chamber outlet flow rotation,
Allow four the rifle correlation at an angle being arranged on vaporizer sidewall, the swirling eddy energy of generation and feed
It is sufficiently mixed with the mineral aggregate that tangential way is sent into, and the orderly reaction tower sending into Flash Smelting Furnace, make material energy
In Flash Smelting Furnace dispersed.
Further, described spray gun is many groups, is symmetricly set on vaporizer sidewall, in same level
Spray gun, along identical direction of rotation, in the same plane along disalignment 2-20 °.Arrangement above can
So that gasification chamber outlet flow rotation, make four rifles being arranged on vaporizer sidewall at an angle right
Penetrating, the swirling eddy of generation can be sufficiently mixed with the mineral aggregate that feed is sent into tangential way, and orderly sending
Enter the reaction tower of Flash Smelting Furnace, make the material can be dispersed in Flash Smelting Furnace.
Further, described vaporizer is cuboid, square, cylinder, polygon cube, ball
One in shape structure.The basic configuration of vaporizer is cylindrical, but considers the restriction in space, or material
Difference, the spatial form of other form may be used without, and the impact on gasification result is little.
The outlet diameter of vaporizer can be equal to the diameter of vaporizer, it is provided that atmosphere gas.Gasification chamber outlet
Diameter might be less that the diameter of vaporizer, to provide an air-flow having pressure to send, pressure big
Little by the size decision of the outlet diameter of vaporizer, outlet diameter is the least, and pressure is the biggest, sends gas
Speed is the fastest.
When gasification chamber outlet diameter one timing, by increasing the feeding coal of spray gun, improve response strength, also
Can increase the pressure of vaporizer, usual this pressure is between 0 to 6Mpa.
The using method of described oxide ore flash metallurgy dispenser is as follows:
S1: raw material and fuel prepare: breeze or regenerative raw materials are worn into the powder of below 100 mesh and carries out
It is dried, if gas making raw material uses coal dust, below 200 mesh can be worn into, if water-coal-slurry then needs elder generation
Dispensing is produced, if fuel oil, natural gas, methane etc. can be fed directly to spray gun.
S2: by spray gun oxygen-containing gas (air, oxygen rich gas or pure oxygen) gas making raw material (coal dust,
In water-coal-slurry, steam, natural gas, fuel oil, methane one or more) spray into vaporizer simultaneously, change
After learning reaction, moment produces high-temperature reducing gas.
S3: breeze or regenerative raw materials powder enter dispenser by material inlet, and some smelt auxiliary material such as
Flux etc. also can add dispenser from material inlet.
Sudden strain of a muscle is entered after S4: bottom dispenser, breeze or regenerative raw materials powder and the abundant disperse of reducing gas
In speed stove.
The structure of oxide ore flash metallurgy dispenser described in the utility model is in vaporizer internal build one
The gasification environment of individual relative closure, making the fully gasification in vaporizer of oxygen-containing gas and gas making raw material is reduction
Property gas, along outlet at bottom direction formed an air-flow, with material inlet enter metallurgical raw material or adjuvant fill
After dividing mixing, smelt in entering the reaction tower of Flash Smelting Furnace.
Dispenser described in the utility model effectively incorporates material inlet and gas making room, and compact conformation, with list
One equipment achieves and synchronizes feed, heat supply in Flash Smelting Furnace, supplies and the quadruple function of batch mixing in advance, phase
The mode of batch mixing feed is carried out by returning again to feeding system after tail gas reformation for more existing, it is to avoid
High-temperature gas thermal loss in distance transport process and the loss (more than 1000 DEG C to transmission pipeline
The conveying of high-temperature tail gas higher to the requirement of pipeline material, piping cost is high, the life-span is short)；Meanwhile,
Owing to need not auxiliary device (such as tail gas cracking converting apparatus, gas pressurized conveying equipment), significantly drop
Low one-time investment, also makes the fault rate of complete equipment greatly reduce, thus reduces equipment cost
With maintenance cost.Additionally, dispenser vaporizer gas making principle described in the utility model is simple, use gas making
Raw material (such as coal dust) and oxygen carry out simple chemical reaction and can realize, without multiple by other
The mode of miscellaneous costliness (if plasma electric is from, gas conversion etc.) realizes gas making or gas converts, the most easily
Control, greatly reduces production and use cost.In brief, dispenser described in the utility model achieves
The miniaturization of equipment, lightweight, invest little, maintenance and use cost be low, take full advantage of gasification generation
Heat, energy-saving and cost-reducing.
Relative to prior art, a kind of oxide ore flash metallurgy dispenser described in the utility model have with
Lower advantage:
A kind of oxide ore flash metallurgy dispenser described in the utility model make gas making, exothermic process with to ore deposit
Process is isolated, it is ensured that reliable gas making and intensification；After high-temperature reducing gas leaves vaporizer, can be with minimum
The fastest speed of distance with leave dispenser after raw material be sufficiently mixed, so that reduction reaction can be quickly
Occur, save the space of flash metallurgy smelting in suspension.
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing,
Schematic description and description of the present utility model is used for explaining this utility model, is not intended that this reality
With novel improper restriction.In the accompanying drawings:
Fig. 1 is a kind of oxide ore flash metallurgy dispenser structural representation described in the utility model；
Fig. 2 is that a kind of oxide ore flash metallurgy dispenser described in the utility model is when arranging top lance
Structural representation；
Fig. 3 is that a kind of oxide ore flash metallurgy dispenser described in the utility model is when arranging sidewall spray gun
Structural representation；
Fig. 4 is that a kind of oxide ore flash metallurgy dispenser described in the utility model arranges top and adds sidewall spray
Structural representation during rifle；
Fig. 5 be a kind of oxide ore flash metallurgy dispenser sidewall spray gun described in the utility model position is set
Put schematic diagram 1；
Fig. 6 be a kind of oxide ore flash metallurgy dispenser sidewall spray gun described in the utility model position is set
Put schematic diagram 2；
Fig. 7 be a kind of oxide ore flash metallurgy dispenser sidewall spray gun described in the utility model position is set
Put schematic diagram 3；
Fig. 8 is that a kind of oxide ore flash metallurgy dispenser four material inlet position described in the utility model is arranged
Schematic diagram.
Description of reference numerals:
1, vaporizer, 1-1, cuboid vaporizer, 1-2, polygon cube vaporizer, 2, spray gun,
2-1, top lance, 2-2, sidewall spray gun, 3, material inlet, 3-1, monolayer material inlet, 3-2, double
Layer material inlet, 4, outlet at bottom, cooling jacket between 5, vaporizer and material inlet, 6, material inlet and stove
Cooling jacket between wall.
Detailed description of the invention
It should be noted that in the case of not conflicting, in embodiment in this utility model and embodiment
Feature can be mutually combined.
Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As it is shown in figure 1, a kind of oxide ore flash metallurgy dispenser, including vaporizer 1, spray gun 2, give
Material mouth 3, spray gun 2 is arranged on vaporizer 1, and penetrates vaporizer 1 inwall, stretches in vaporizer 1,
Material inlet 3 is set bottom vaporizer 1, and material inlet 3 connects with vaporizer 1 outlet at bottom 4.Gas
Change room 1 to be used for producing reducibility gas and heat being provided；Spray gun 2 is oxygen-containing in order to spray in vaporizer 1
Gas and gas making raw material be such as: in coal dust, water-coal-slurry, steam, natural gas, fuel oil, methane a kind of or
Multiple combination, is used for producing reducibility gas and providing heat for flash furnace reaction tower, and spray gun 2 can be
Single channel or multichannel, can only a kind of raw material of spray, multichannel spray gun also can be jetted plurality of raw materials simultaneously；Give
Material mouth is used for adding raw material or the adjuvant of metallurgical needs, such as mineral aggregate, flux etc..
Described material inlet 3 is arranged at vaporizer 1 bottom level, uniform around vaporizer 1 outlet at bottom 4
Arranging, material inlet 3 can configure 2,3,4,6, multiple material inlets such as 8, such as figure
Shown in 8, vaporizer 1 outlet at bottom 4 is provided with 4 material inlets 3.
Described material inlet 3 is multiple structure.Multilamellar material inlet is set and can simplify dispensing flow process, reduce and throw
Money, when having plurality of raw materials or flux is necessarily drawn to mixed smelting, Normal practice is to enter at raw material to dodge
After the Weighing respectively of speed stokehold, then batch mixing, need to be with occupying the feed bin of big quantity space, belt conveyer scale, transhipment
The main equipment such as stand；And multilamellar material inlet can utilize way that wind fen-ting amount carries straight for each raw material
Pick material inlet, mix in exit；Above-mentioned functions, if feeding coal is little, at monolayer feed
In, feed by the way of the charging aperture different to different material distribution, also can realize.Such as Fig. 3 and figure
Shown in 4, the double-deck material inlet 3-2 included for this utility model, certainly in the case of equipment needs,
This utility model can also be as in figure 2 it is shown, use monolayer material inlet 3-1, monolayer material inlet 3-1 cincture
Vaporizer outlet at bottom 4 uniformly configures 4 material inlets, as shown in Figure 8.
As Figure 1-4, around arranging cooling jacket 5, material inlet 3 between vaporizer 1 and material inlet 3
With tweer around arranging cooling jacket 6, its objective is to protect material inlet, prevent it by high temperature melting loss.
As it is shown in figure 1, vaporizer 1 crown center position is provided with a spray gun 2.Can also be such as Fig. 2
Shown in, vaporizer 1 top arranges top lance 2-1, and spray gun quantity is multiple, is evenly arranged in gasification
Ceiling portion.Sidewall spray gun 2-2 can also be set on vaporizer sidewall, as shown in Figure 3.
Described spray gun is many groups, and often group spray gun is arranged on different level, it is also possible to as it is shown in figure 5,
Spray gun in same level, is oppositely arranged two-by-two.Described spray gun is many groups, and often group spray gun is arranged at not
On same level face, it is also possible to as shown in Figure 6, the spray gun in same level, offside is the most parallel to be staggered
Arrange.Can also be along identical direction of rotation, same flat as it is shown in fig. 7, spray gun in same level
Along disalignment 2-20 ° in face.
Setting to spray gun, can be respectively provided with on vaporizer top and sidewall in conjunction with both the above situation
Spray gun, concrete structure is as shown in Figure 4.
Described vaporizer 1 is in cuboid, square, cylinder, polygon cube, spherical structure
One.It is cuboid vaporizer 1-1 as shown in Figures 1 and 2, as shown in Figure 3 and Figure 4, for many
Limit shape cube vaporizer 1-2.
Specific embodiment:
Vaporizer 1 outer wall selects double-layer plate, middle logical cooling water, inwall build refractory brick or spray indefinite
Type refractory material, refractory material thickness 50-300mm, steel plate thickness 10-35mm.Cooling water forms Quench wall,
The ash in coal is conducive to form dross at inwall；When ash deficiency in coal, can add in fine coal
The iron ore concentrate of 10-20% assists dross, protects furnace wall, or adds other material being conducive to dross, as
The Al of 5%-10%2O3、SiO2Deng.
Vaporizer 1 is provided with four spray guns on sidewall, and fine coal, oxygen (can add steam) are from spray gun 2
Spraying into vaporizer 1, in vaporizer 1, fine coal burns rapidly and gasifies, and generating temperature is 1400 DEG C, gas
Bulk concentration is the reducing atmosphere (CO+H of 85%2), four spray guns 2 are arranged at an angle, such as Fig. 6 institute
Show, make the air-flow of gasification form swirling eddy, from vaporizer 1 outlet ejection.
Iron ore concentrate is general ore dressing plant product out, and granularity is that 200 mesh are to 300 mesh, iron ore concentrate
By oxygen-enriched pressurization, spray into dispenser from material inlet 3.Material inlet 3 as shown in Figure 8, makes breeze uniform
Be divided into four parts along material inlet 3 pipeline tangential directions enter vaporizer 1 outlet at bottoms 4, and along
The edge dispersion of outlet at bottom 4, this design is possible to prevent material to concentrate in outlet at bottom center, breeze
Falling during reaction tower space after leaving feed port, falling in the way of rotation counterclockwise.
The exit flow of vaporizer 1, in counterclockwise rotating, mixes with the iron ore concentrate of material inlet 3 ejection,
Two kinds of materials of gas-solid mix fully in rotary course, form columnar vortex disperse empty in flash furnace reaction tower
Between, make flash metallurgy principle be applied smoothly.
These are only preferred embodiment of the present utility model, not in order to limit this utility model, all
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, all
Within protection domain of the present utility model should be included in.
Claims (10)
1. an oxide ore flash metallurgy dispenser, it is characterised in that: include vaporizer (1), spray gun
(2), material inlet (3), spray gun (2) is arranged on vaporizer (1), and penetrates vaporizer (1)
Inwall, stretches in vaporizer (1), and vaporizer (1) bottom arranges material inlet (3), and feed
Mouth (3) connects with vaporizer (1) outlet at bottom (4).
A kind of oxide ore flash metallurgy dispenser, it is characterised in that institute
State material inlet (3) to arrange at vaporizer (1) bottom level, around vaporizer (1) outlet at bottom (4)
It is evenly arranged.
A kind of oxide ore flash metallurgy dispenser, it is characterised in that institute
Stating material inlet (3) is multiple structure.
A kind of oxide ore flash metallurgy dispenser, it is characterised in that institute
State material inlet (3) discharging direction to be not more than with vaporizer (1) outlet at bottom (4) airflow direction angle
90°。
A kind of oxide ore flash metallurgy dispenser, it is characterised in that gas
Change between room (1) and material inlet (3) around arranging cooling jacket, material inlet (3) and tweer cincture
Cooling jacket is set.
A kind of oxide ore flash metallurgy dispenser, it is characterised in that gas
Change room (1) top and be provided with spray gun (2).
A kind of oxide ore flash metallurgy dispenser, it is characterised in that institute
Stating spray gun (2) is many groups, and often group spray gun is arranged on different level, the spray gun in same level,
Offside is oppositely arranged two-by-two.
A kind of oxide ore flash metallurgy dispenser, it is characterised in that institute
Stating spray gun (2) is many groups, and often group spray gun is arranged on different level, the spray gun in same level,
The most parallel setting of staggering of offside.
A kind of oxide ore flash metallurgy dispenser, it is characterised in that institute
Stating spray gun (2) is many groups, is symmetricly set on vaporizer (1) sidewall, the spray gun in same level,
Along identical direction of rotation, in the same plane along disalignment 2-20 °.
A kind of oxide ore flash metallurgy dispenser, it is characterised in that institute
Stating vaporizer (1) is in cuboid, square, cylinder, polygon cube, spherical structure
A kind of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620387021.8U CN205717169U (en) | 2016-04-28 | 2016-04-28 | A kind of oxide ore flash metallurgy dispenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620387021.8U CN205717169U (en) | 2016-04-28 | 2016-04-28 | A kind of oxide ore flash metallurgy dispenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205717169U true CN205717169U (en) | 2016-11-23 |
Family
ID=57331552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620387021.8U Active CN205717169U (en) | 2016-04-28 | 2016-04-28 | A kind of oxide ore flash metallurgy dispenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205717169U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805728A (en) * | 2016-04-28 | 2016-07-27 | 天津闪速炼铁技术有限公司 | Oxidized ore flash metallurgy feeder |
| CN107120658A (en) * | 2017-06-19 | 2017-09-01 | 重庆航天机电设计院 | A kind of chamber isolated small-sized rubbish pyrolytic gasification combustion furnace |
-
2016
- 2016-04-28 CN CN201620387021.8U patent/CN205717169U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805728A (en) * | 2016-04-28 | 2016-07-27 | 天津闪速炼铁技术有限公司 | Oxidized ore flash metallurgy feeder |
| CN107120658A (en) * | 2017-06-19 | 2017-09-01 | 重庆航天机电设计院 | A kind of chamber isolated small-sized rubbish pyrolytic gasification combustion furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107226627B (en) | Active powder lime second grade suspension calcining device | |
| CN103993115B (en) | Dry integrated with reduction flash ironmaking equipment and iron smelting method | |
| CN112410494B (en) | Iron-making device and method capable of applying suspension melting reduction of fine-grained fine ores | |
| CN102304600A (en) | Rotary hearth furnace adopting 2-3-section distribution and discharge mode for direct reduction production | |
| CN205717169U (en) | A kind of oxide ore flash metallurgy dispenser | |
| CN202204270U (en) | A sleeve type continuous burning shaft kiln | |
| CN105805728B (en) | A kind of oxide ore flash metallurgy dispenser | |
| CN105861834B (en) | A kind of eddy flow Flash Smelting technique | |
| CN102994160A (en) | Entrained-flow bed gasifier for solid-phase deslagging | |
| CN103803567A (en) | Continuous production device for calcining and whitening black talc and production process thereof | |
| CN100431957C (en) | Technique of fluidized instant calcinations of kaolin in coal series | |
| CN206156759U (en) | Handle low aluminium coal series kaolinite's of high -speed railway fluidization sintering device | |
| CN113930562A (en) | Blast furnace smelting system based on synergistic treatment of valuable element-rich solid waste | |
| CN203284438U (en) | Magnetizing roasting reducing atmosphere preparation device and iron mine flash magnetizing roasting system | |
| CN102288022B (en) | Sleeve-type gas-burning shaft kiln | |
| CN111412753A (en) | Vertical cooling device with steady flow rectification characteristic and cooling method thereof | |
| CN105157415B (en) | Ring-shaped shaft kiln | |
| CN108168292B (en) | Multifunctional environment-friendly BSK sintering technology shaft kiln and use method thereof | |
| CN102787193B (en) | Coking reduction smelting device | |
| CN2921740Y (en) | Internal and external heating vertical passway reduction furnace | |
| CN2666909Y (en) | Energy-saving environment protection active lime burning-in shaft kiln | |
| CN101792840A (en) | Ferrous material injection reduction furnace and ferrous material injection reduction process | |
| CN201706894U (en) | Concentrate spray nozzle of copper smelting flash furnace | |
| CN111561826B (en) | Suspension roasting furnace device and roasting method | |
| CN114438272A (en) | Oxygen isolation method for cooling high-temperature direct reduction material of iron ore rotary kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |