CN106834582A - Hot charging gas-based shaft kiln system and method - Google Patents
Hot charging gas-based shaft kiln system and method Download PDFInfo
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- CN106834582A CN106834582A CN201710136982.0A CN201710136982A CN106834582A CN 106834582 A CN106834582 A CN 106834582A CN 201710136982 A CN201710136982 A CN 201710136982A CN 106834582 A CN106834582 A CN 106834582A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
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Abstract
The present invention relates to a kind of hot charging gas-based shaft kiln system and method.The system includes heat transfer apparatus, hot tank and gas-based shaft kiln.There is hot tank hot tank entrance to be exported with hot tank, and hot tank entrance is connected with the heat transfer apparatus；Gas-based shaft kiln is provided with reducing zone and cooling cemented zone, reducing zone is provided with also Primordial Qi air inlet endless tube and multiple reduction gas branch pipes, also Primordial Qi air inlet endless tube is arranged on the top of gas-based shaft kiln, and multiple reduction gas branch pipe is connected and extend to reducing zone bottom with also Primordial Qi air inlet endless tube；The reducing zone of gas-based shaft kiln is connected with hot tank outlet.Gas-based shaft kiln of the present invention is provided only with reducing zone and cooling cemented zone, the setting for reducing gas branch pipe causes that also Primordial Qi is easier to reach reducing zone bottom, reduction gas is more evenly distributed, also Primordial Qi is longer in residing time in furnace, also Primordial Qi is inversely contacted with iron ore, and then cause that reduction reaction is more abundant, and then improve resultant metal rate.
Description
Technical field
The present invention relates to metal smelt field, more particularly to direct reduction processes of Iron ores field, more particularly to a kind of heat
Dress gas-based shaft kiln system and method.
Background technology
DRI (DRI), also known as sponge iron, is that iron ore is reduced directly the iron content for obtaining under less than fusion temperature
Product.Sponge iron is a kind of substitute of steel scrap, is electric furnace refining clean steel, the indispensable impurity diluent of high-quality steel, is to turn
Stove makes steel the cooling agent of high-quality, is to develop the indispensable raw material of Ferrous Metallurgy short route., whole world DRI in 2015
Annual production up to 75,220,000 tons, record high.China by direct-reduction technique be classified as development of iron ＆ steel industry Main way it
One.
The technique for producing DRI is referred to as direct-reduction process, belongs to non-blast furnace ironmaking technique, is divided into gas base method and coal
The major class of base method two.In current world wide, 78% DRI is produced by gas base method, and gas base method mainly includes
MIDREX techniques, HYL techniques and PERED techniques.Gas-based shaft kiln directly reduced iron-refining process is universally acknowledged green low-carbon ironmaking
Technique.With what is signed in Paris weather summit in 2015《Paris agreement》Implement, gas-based shaft kiln directly reduced ironmaking technology will
Obtain wider popularization and application.Iron ore material handled by gas-based shaft kiln is mainly acid pellet, prepared by acid pellet
Journey experienced the temperature change of " room temperature -1200-1350 DEG C-less than 100 DEG C of finished product ", and acid pellet is put into gas base and erected
During stove, temperature also needs to be enhanced 800-900 DEG C and can just be reduced gas and be reduced into direct-reduction iron product.During cooling, again
Temperature-rise period energy consumption wastes big.
The iron ore material that routine gas-based shaft kiln technique is used at present is mainly normal temperature (less than 100 DEG C) acid pellet, oxygen
Gradually 800-900 DEG C is heated to after pellet input shaft furnace from normal temperature by top gas/also Primordial Qi.Conventional acid pellet production work
Skill is chain grate-rotary kiln-central cooler method, can be divided into drying, preheating, roasting and refrigerating work procedure, wherein calcining process temperature
Up to 1200-1350 DEG C, then it is cooled and is cooled to less than 100 DEG C, shaft furnace is then transported to again as raw material.
The shortcoming of normal temperature oxidation pelletizing production-gas-based shaft kiln reducing process is：1100-1300 DEG C of acid pellet elder generation
Through being cooled to less than 100 DEG C, then 800-900 DEG C is heated in gas-based shaft kiln can just be reduced into product, so, first drop
Temperature, the technique for heating up again cause 1000-2000 DEG C of heat waste, dramatically increase the energy consumption of technique.Additionally, acid pellet is produced
System has included the central cooler of cooling effect, increased equipment, extends operation.Finally, conventional gas-based shaft kiln also Primordial Qi is entered
More than gas port it is made up of with preheating zone reducing zone, the presence of preheating zone both makes to significantly improve the height of shaft furnace, reduces again perpendicular
The utilization rate of stove.
The content of the invention
To overcome above mentioned problem so that also evenly, the present invention provides one kind by without preheating area but tool to Primordial Qi air flow method
The hot charging gas-based shaft kiln system and method that the gas-based shaft kiln for having reduction gas branch pipe is constituted.
Hot charging gas-based shaft kiln system of the present invention includes heat transfer apparatus, hot tank and gas-based shaft kiln；Wherein,
The heat transfer apparatus are used to convey thermal oxide pelletizing；
The hot tank has hot tank entrance with hot tank outlet, the hot tank entrance and the heat transfer apparatus phase
Even, the hot tank is used for storage and insulation to the thermal oxide pelletizing；
The gas-based shaft kiln is provided with reducing zone and cooling cemented zone, and the reducing zone is provided with hot-top gas and exports, goes back
Primordial Qi air inlet endless tube and multiple reduction gas branch pipes, the also Primordial Qi air inlet endless tube are arranged on the top of the gas-based shaft kiln, institute
Multiple reduction gas branch pipes are stated to connect and extend to the reducing zone bottom with the also Primordial Qi air inlet endless tube；
The reducing zone of the gas-based shaft kiln is connected with hot tank outlet.
Further, the system also includes the feed arrangement being arranged between the hot tank and the gas-based shaft kiln.
Further, the system also includes thermal oxidation units, and the thermal oxidation units include chain bamboo trunk machine and rotary kiln, use
In the thermal oxide pelletizing is prepared, green pellets passes sequentially through the chain bamboo trunk machine and rotary kiln.
Further, the system also includes pelletizing room, and the pelletizing room is connected with the thermal oxidation units, for inciting somebody to action
Raw material is made green pellets, and passes to the thermal oxidation units.
The present invention also provides a kind of method of utilization said system reduced iron, the described method comprises the following steps：
Thermal oxide pelletizing is delivered to hot tank by heat transfer apparatus, the hot tank is carried out to the thermal oxide pelletizing
Storage, insulation；
Thermal oxide pelletizing in the hot tank is from top to bottom delivered to the reducing zone of the gas-based shaft kiln, from the reduction
Gas air inlet endless tube is passed through also Primordial Qi, and the also Primordial Qi extends to the reducing zone bottom after reducing gas branch pipe, and from the bottom to top
With the thermal oxide pelletizing reverse flow, there is reduction reaction, obtain reduced iron and hot-top gas；
The reduced iron obtains iron through the cooling of supercooling cemented zone, carburizing, and the hot-top gas is from the hot-top gas
Outlet discharge.
Further, methods described is further comprising the steps of：
The thermal oxide pelletizing is delivered to by the gas-based shaft kiln from the hot tank by feed arrangement.
Further, methods described is further comprising the steps of：
Green pellets is dried by chain bamboo trunk machine, is preheated, be sent to rotary kiln, the rotary kiln carries out oxidizing roasting to it,
Prepare thermal oxide pelletizing.
Further, methods described is further comprising the steps of：
By raw material feeding pelletizing room, the green pellets is prepared.
Specifically, the temperature into the thermal oxide pelletizing of the gas-based shaft kiln is 800 DEG C -1100 DEG C.
Specifically, the temperature of the thermal reduction gas is 850 DEG C -1050 DEG C.
Beneficial effects of the present invention：
Gas-based shaft kiln of the present invention is provided only with reducing zone and cooling cemented zone, and the setting for reducing gas branch pipe is caused also
Primordial Qi is easier to reach reducing zone bottom, and reduction gas is more evenly distributed, and also Primordial Qi is longer in residing time in furnace, also Primordial Qi and iron
Ore is inversely contacted, and then causes that reduction reaction is more abundant, and then improves resultant metal rate.
Gas-based shaft kiln of the present invention does not need preheating zone simultaneously so that the height of gas-based shaft kiln is reduced, and also improves
The utilization rate of gas-based shaft kiln.The temperature of the acid pellet of other rotary kiln production, can directly hot transport at 1100-1300 DEG C
Used as raw material to gas-based shaft kiln, without first lowering the temperature, reheating operation, so as to significantly save system energy consumption.Also exactly base
In above-mentioned reason, in the production process of acid pellet, system need not play the central cooler of cooling effect so that acid pellet work
Skill is simplified.
Brief description of the drawings
Fig. 1 is the schematic diagram of hot charging gas-based shaft kiln system of the present invention.
Fig. 2 is the structural representation of also Primordial Qi air inlet endless tube of the present invention.
Fig. 3 is the flow chart of the method for the invention.
Specific embodiment
Below in conjunction with drawings and Examples, specific embodiment of the invention is described in more details, so as to energy
Enough more fully understand the advantage of the solution of the present invention and its various aspects.However, specific embodiments described below and implementation
Example is only descriptive purpose, rather than limitation of the present invention.
As shown in figure 1, hot charging gas-based shaft kiln system of the present invention includes that gas-based shaft kiln 1, hot tank 2 are filled with heated conveying
Put 3.The gas-based shaft kiln 1 prepares iron for heat of reduction acid pellet, the hot tank 2 be used for the storage of thermal oxide pelletizing and
Insulation, the heat transfer apparatus 3 are used to convey thermal oxide pelletizing.The temperature of now described thermal oxide pelletizing is 1100-1300
DEG C, it is prepared by its thermal oxidation units 4 for passing through hereafter describe.System of the present invention can directly by the hot oxygen of said temperature
Pellet is used using the hot gas-based shaft kiln 1 that is transported to as raw material, without first lowering the temperature, reheating operation, has significantly been saved and is
System energy consumption.
As shown in figure 1, there is the hot tank 2 hot tank entrance and hot tank to export, the hot tank entrance with it is described
Heat transfer apparatus 3 are connected, and thermal oxide pelletizing is transported in hot tank 2 through heat transfer apparatus 3, is stored in hot tank 2, protected
Temperature, now the temperature of thermal oxide pelletizing is 950-1200 DEG C.
As depicted in figs. 1 and 2, the gas-based shaft kiln 1 is provided with the reducing zone 101 on top and the cooling cemented zone of bottom
102, wherein, the reducing zone 101 is provided with hot-top gas and exports, goes back Primordial Qi air inlet endless tube and multiple reduction gas branch pipes, institute
State the top that also Primordial Qi air inlet endless tube is arranged on the gas-based shaft kiln 1, the multiple reduction gas branch pipe and the also Primordial Qi air inlet
Endless tube is connected and extends to the bottom of the reducing zone 101；The reducing zone 101 of the gas-based shaft kiln 1 exports phase with the hot tank
Even.
As depicted in figs. 1 and 2, reduction gas branch pipe extends to the bottom of the reducing zone 101, i.e., in described gas-based shaft kiln 1
Portion, also Primordial Qi air inlet endless tube are arranged on the top of the gas-based shaft kiln 1, and it is connected with the multiple reduction gas branch pipe, thermal reduction
Gas enters the multiple reduction gas branch pipe from the also Primordial Qi air inlet endless tube, reaches the bottom of reducing zone 101, then reducing gas meeting
It is slow to rise.The thermal oxide pelletizing released from hot tank 2 from top to bottom enters gas-based shaft kiln 1, after with also Primordial Qi heat exchange, with
And by reverse flow thermal reduction gas reduce, then down move to cooling cemented zone 102 through cooling, carburizing into high-quality sponge iron produce
After product, from the discharge of the bottom of gas-based shaft kiln 1.So also Primordial Qi is more easy to reach the middle part of shaft furnace, and air flow method evenly, is conducive to carrying
The height also temperature of Primordial Qi, raising reduction section temperature, and then improve the final degree of metalization of product.In reduction process, thermal oxide ball
Group's temperature is 800-1100 DEG C, and the temperature of the thermal reduction gas in the gas-based shaft kiln 1 is 850-1050 DEG C, and the temperature is reduced iron
Most suitable temperature in technique.The also Primordial Qi is usually H2With the gaseous mixture of CO, its ratio can be adjusted according to actual needs
It is whole, usual H2/CO=1.0~2.
As shown in figure 1, during reduction reaction, having gas generation, it may be defined as hot-top gas, usually, hot stove
Top gas temperature is 750-1050 DEG C, and hot-top gas, can after discharge from the hot-top gas outlet discharge of the upper side of gas-based shaft kiln 1
Utilized by laggard steps for the treatment of such as the recovery that exchanges heat, sensible heat treatment, for example can be by heat recovery, for being other needs of system
Device or equipment heating of heat etc..
In addition, the system may also include the feed arrangement 6 being arranged between the hot tank and the gas-based shaft kiln.Enter
Thermal oxide pelletizing is imported gas-based shaft kiln 1 by material device 6 from hot tank 2, and feed arrangement 6 can according to actual needs adjust charging speed
Degree.
As shown in figure 1, the system also includes thermal oxidation units 4, the thermal oxidation units 4 include chain bamboo trunk machine 401 and return
Rotary kiln 402, for preparing the thermal oxide pelletizing, green pellets passes sequentially through the chain bamboo trunk machine 401 and rotary kiln 402, via chain
Thermal oxide pelletizing is produced in drying, preheating and the oxidizing roasting of rotary kiln 402 of comb machine 401.By drying grate 401- rotary kilns 402
The thermal oxide pelletizing of production is sent into gas-based shaft kiln 1 by heat transfer apparatus 3, and high-quality sea is gradually reduced into gas-based shaft kiln 1
Continuous iron.
As shown in figure 1, the system may also include pelletizing room 5, the pelletizing room 5 is connected with the thermal oxidation units 4, uses
In raw material is made into green pellets, and the thermal oxidation units 4 are passed to, wherein raw material is usually iron ore.
According to system of the present invention, in the production process of acid pellet, system need not play the ring of cooling effect
Cold so that oxide pelletizing process is simplified.
As shown in figure 3, the present invention also provides a kind of method of utilization said system reduced iron, methods described includes following step
Suddenly：
Thermal oxide pelletizing by heat transfer apparatus 3 by temperature for 1100-1300 DEG C is delivered to hot tank 2, the heat storage
2 pairs, the tank thermal oxide pelletizing is stored, is incubated, and now the temperature of thermal oxide pelletizing is 950-1200 DEG C；
Thermal oxide pelletizing in the hot tank 2 is from top to bottom delivered to the reducing zone 101 of the gas-based shaft kiln 1, from institute
State also Primordial Qi air inlet endless tube and be passed through also Primordial Qi, the also Primordial Qi extends to the bottom of the reducing zone 101 after reducing gas branch pipe, and
From the bottom to top with the thermal oxide pelletizing reverse flow, into the gas-based shaft kiln 1 thermal oxide pelletizing temperature for 800 DEG C-
1100 DEG C, now there is reduction reaction, obtain reduced iron and hot-top gas；
The temperature of the thermal reduction gas is 850 DEG C -1050 DEG C, and the also Primordial Qi is inversely contacted with the thermal oxide pelletizing,
Reduction reaction is carried out, reduced iron and hot-top gas is obtained, usually, hot-top temperature degree is 750-1050 DEG C.
The reduced iron obtains iron through the cooling of supercooling cemented zone 102, carburizing, and the hot-top gas is from the hot-top
Gas outlet discharge, the heat is recyclable, heated for other need heat for system device or equipment etc..
As shown in figure 3, further, methods described is further comprising the steps of：
The thermal oxide pelletizing is delivered to by the gas-based shaft kiln 1 from the hot tank 2 by feed arrangement 6.
As shown in figure 3, further, methods described is further comprising the steps of：
Green pellets is dried by chain bamboo trunk machine 401, is preheated, be sent to rotary kiln 402, the rotary kiln 402 is carried out to it
Oxidizing roasting, prepares thermal oxide pelletizing.
As shown in figure 3, further, methods described is further comprising the steps of：
By raw material feeding pelletizing room 5, the green pellets is prepared, wherein raw material is usually iron ore.
Embodiment 1
The green pellets of iron ore pelletizing room production, produces via drying grate drying, preheating and rotary kiln oxidizing roasting
1200 DEG C of full iron is 67% hot iron concentrate acid pellet, and thermal oxide pelletizing is transported to hot tank through heat transfer apparatus, oxidation
Pelletizing charging temperature is 1050 DEG C, is stored in hot tank, is incubated, and about 950 DEG C of thermal oxide pelletizing is released from hot tank
Enter gas-based shaft kiln through feed arrangement.About 880 DEG C, the also Primordial Qi air inlet of the thermal reduction gas of H2/CO=1.8 from the top of gas-based shaft kiln
Endless tube enters gas-based shaft kiln, then is passed into gas-based shaft kiln middle part by multiple downward reduction gas branch pipes, sets 12 also Primordial Qi
Branch pipe is distributed at the top of gas-based shaft kiln in tubular ring.Thermal oxide pelletizing is contacted with the thermal reduction gas heat exchange of reverse movement, Ran Houjin
Row reduction reaction, then down move to cooling cemented zone through cooling, carburizing into degree of metalization 95%, carbon containing 2.1% high-quality sea
Continuous iron product, the hot-top gas that about 880 DEG C are generated after being reacted with acid pellet is discharged from shaft furnace top.
Embodiment 2：
The green pellets of iron ore pelletizing room production, produces via drying grate drying, preheating and rotary kiln oxidizing roasting
1280 DEG C of full iron is 57% hot iron concentrate acid pellet, and thermal oxide pelletizing is transported to hot tank through heat transfer apparatus, oxidation
Pelletizing charging temperature is 1110 DEG C, is stored in hot tank, is incubated, and about 1000 DEG C of thermal oxide pelletizing is released from hot tank
Enter gas-based shaft kiln through feed arrangement.About 900 DEG C, the also Primordial Qi air inlet of the thermal reduction gas of H2/CO=1.5 from the top of gas-based shaft kiln
Endless tube enters gas-based shaft kiln, then is passed into gas-based shaft kiln middle part by multiple downward reduction gas branch pipes, sets 12 also Primordial Qi
Branch pipe is distributed at the top of gas-based shaft kiln in tubular ring.Thermal oxide pelletizing is contacted with the thermal reduction gas heat exchange of reverse movement, Ran Houjin
Row reduction reaction, then down move to cooling cemented zone through cooling, carburizing into degree of metalization 91%, carbon containing 1.0% high-quality sea
Continuous iron product, the hot-top gas that about 945 DEG C are generated after being reacted with acid pellet is discharged from shaft furnace top.
It should be noted that each embodiment above by reference to described by accompanying drawing is only used to illustrate rather than limitation originally
The scope of invention, it will be understood by those within the art that, it is right under the premise without departing from the spirit and scope of the present invention
Modification or equivalent that the present invention is carried out, all should cover within the scope of the present invention.Additionally, signified unless the context
Outward, the word for occurring in the singular includes plural form, and vice versa.In addition, unless stated otherwise, then any embodiment
All or part of can combine any other embodiment all or part of use.
Claims (10)
1. a kind of hot charging gas-based shaft kiln system, it is characterised in that the system is perpendicular including heat transfer apparatus, hot tank and gas base
Stove；Wherein,
The heat transfer apparatus are used to convey thermal oxide pelletizing；
There is the hot tank hot tank entrance to be exported with hot tank, and the hot tank entrance is connected with the heat transfer apparatus,
The hot tank is used for storage and insulation to the thermal oxide pelletizing；
The gas-based shaft kiln is provided with reducing zone and cooling cemented zone, and the reducing zone is provided with hot-top gas and exports, goes back Primordial Qi
Air inlet endless tube and multiple reduction gas branch pipes, the also Primordial Qi air inlet endless tube is arranged on the top of the gas-based shaft kiln, described many
Individual reduction gas branch pipe is connected and extends to the reducing zone bottom with the also Primordial Qi air inlet endless tube；
The reducing zone of the gas-based shaft kiln is connected with hot tank outlet.
2. the system as claimed in claim 1, it is characterised in that the system also includes being arranged on the hot tank and the gas
Feed arrangement between base shaft furnace.
3. system as claimed in claim 1 or 2, it is characterised in that the system is also included for preparing the thermal oxide ball
The thermal oxidation units of group, the thermal oxidation units include chain bamboo trunk machine and rotary furnace, and green pellets passes sequentially through the chain bamboo trunk machine and returns
Converter.
4. system as claimed in claim 3, it is characterised in that the system also includes for raw material to be made into green pellets, and
The pelletizing room of the thermal oxidation units is passed to, the pelletizing room is connected with the thermal oxidation units.
5. the method for any system reducing iron of a kind of utilization claim 1-4, it is characterised in that methods described includes following
Step：
Thermal oxide pelletizing is delivered to hot tank by heat transfer apparatus, the hot tank is stored up to the thermal oxide pelletizing
Deposit, be incubated；
Thermal oxide pelletizing in the hot tank is from top to bottom delivered to the reducing zone of the gas-based shaft kiln, is entered from the also Primordial Qi
Compression ring pipe is passed through also Primordial Qi, and the also Primordial Qi extends to the reducing zone bottom after reducing gas branch pipe, and from the bottom to top with institute
Thermal oxide pelletizing reverse flow is stated, reduction reaction occurs, obtain reduced iron and hot-top gas；
The reduced iron obtains iron through the cooling of supercooling cemented zone, carburizing, and the hot-top gas is exported from the hot-top gas
Discharge.
6. method as claimed in claim 5, it is characterised in that methods described is further comprising the steps of：
The thermal oxide pelletizing is delivered to by the gas-based shaft kiln from the hot tank by feed arrangement.
7. the method as described in claim 5 or 6, it is characterised in that methods described is further comprising the steps of：
By green pellets by the drying of chain bamboo trunk machine, waste heat, rotary kiln is sent to, the rotary kiln carries out oxidizing roasting to it, prepared
Thermal oxide pelletizing.
8. method as claimed in claim 7, it is characterised in that methods described is further comprising the steps of：
By raw material feeding pelletizing room, the green pellets is prepared.
9. method as claimed in claim 7, it is characterised in that the temperature into the thermal oxide pelletizing of the gas-based shaft kiln is
800℃-1100℃。
10. method as claimed in claim 5, it is characterised in that the temperature of the thermal reduction gas is 850 DEG C -1050 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710136982.0A CN106834582A (en) | 2017-03-09 | 2017-03-09 | Hot charging gas-based shaft kiln system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710136982.0A CN106834582A (en) | 2017-03-09 | 2017-03-09 | Hot charging gas-based shaft kiln system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270038A (en) * | 2020-04-05 | 2020-06-12 | 上海泰普星坦新材料有限公司 | Moving bed reaction furnace for producing sponge iron by gas-based direct reduction |
| CN112877491A (en) * | 2021-01-14 | 2021-06-01 | 益晖国际有限公司 | Vertical coal-based and gas-based mixed metal iron direct reduction furnace and process thereof |
| WO2022262792A1 (en) * | 2021-06-18 | 2022-12-22 | 宝山钢铁股份有限公司 | Pre-reduced pellet preparation apparatus and method based on grate-rotary kiln |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361481A (en) * | 2013-07-19 | 2013-10-23 | 攀枝花学院 | Preparation method for vanadium-titanium-iron concentrate magnetized pellets for shaft furnace |
| CN104293998A (en) * | 2014-07-18 | 2015-01-21 | 北京神雾环境能源科技集团股份有限公司 | Method and system of preparing spongy iron by using gas-based shaft furnace |
| CN106191361A (en) * | 2016-09-13 | 2016-12-07 | 江苏省冶金设计院有限公司 | The duct type reducing gases of a kind of gas-based shaft kiln enters furnace apparatus and method thereof |
-
2017
- 2017-03-09 CN CN201710136982.0A patent/CN106834582A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361481A (en) * | 2013-07-19 | 2013-10-23 | 攀枝花学院 | Preparation method for vanadium-titanium-iron concentrate magnetized pellets for shaft furnace |
| CN104293998A (en) * | 2014-07-18 | 2015-01-21 | 北京神雾环境能源科技集团股份有限公司 | Method and system of preparing spongy iron by using gas-based shaft furnace |
| CN106191361A (en) * | 2016-09-13 | 2016-12-07 | 江苏省冶金设计院有限公司 | The duct type reducing gases of a kind of gas-based shaft kiln enters furnace apparatus and method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270038A (en) * | 2020-04-05 | 2020-06-12 | 上海泰普星坦新材料有限公司 | Moving bed reaction furnace for producing sponge iron by gas-based direct reduction |
| CN112877491A (en) * | 2021-01-14 | 2021-06-01 | 益晖国际有限公司 | Vertical coal-based and gas-based mixed metal iron direct reduction furnace and process thereof |
| WO2022262792A1 (en) * | 2021-06-18 | 2022-12-22 | 宝山钢铁股份有限公司 | Pre-reduced pellet preparation apparatus and method based on grate-rotary kiln |
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Application publication date: 20170613 |
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