CN102605128A - Method for producing and reducing grained iron by coke oven - Google Patents
Method for producing and reducing grained iron by coke oven Download PDFInfo
- Publication number
- CN102605128A CN102605128A CN2012100829434A CN201210082943A CN102605128A CN 102605128 A CN102605128 A CN 102605128A CN 2012100829434 A CN2012100829434 A CN 2012100829434A CN 201210082943 A CN201210082943 A CN 201210082943A CN 102605128 A CN102605128 A CN 102605128A
- Authority
- CN
- China
- Prior art keywords
- iron
- coking coal
- coke
- granulated iron
- raw material
- 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.)
- Pending
Links
Abstract
The invention relates to a method for producing and reducing grained iron by a coke oven. The method is finished according to the following steps of: firstly, forming a hollow coking coal cake with a rectangular groove in the middle by using coking coal; secondly, adding iron ore concentrate powder into a catalyst, uniformly mixing the catalyst and coal powder without pulverizing, and forming balls on a ball forming mill, wherein the balls serve as the raw material for reducing the cast iron; and finally, placing the raw material into the middle groove in the hollow coking coal cake made from coking coal, covering the coking coal above the raw material, and pushing the raw material into a coke oven chamber to be subjected to dry distillation and carbonization. Under the action of gas generated during coking coal dry distillation and at high temperature, the raw material balls are carburized and smelted, and slag and iron are separated to obtain the cast iron. When the method is compared with the traditional blast furnace ironmaking technology, the investment and environmental pollution are reduced, energy source for sintering and oxidizing the balls is saved, smelting which wastes a large amount of coke is not required, the ironmaking cost is greatly reduced, and the benefit is obviously increased. The method is a new process for ironmaking operation, has very important practical significance and deep historical significance, and is wide in popularization prospect.
Description
Technical field
The invention belongs to field of metallurgy, particularly a kind of method of utilizing coke oven production reduction granulated iron.
Background technology
The method of existing blast-furnace smelting iron all is to sinter fine iron breeze into acid pellet, uses pyrogenous coke in the coke oven again, by a certain percentage coke and pelletizing is contained in the blast-furnace smelting pig iron.The technology of this smelt iron, the sintering oxidation pelletizing both wasted energy, contaminate environment again, facility investment is also big.Not only the capacity factor of a blast furnace is low at blast furnace ironmaking to use this acid pellet, and reduction rate is slow, and energy consumption is high.Moreover, be reduced into metallized pellet with fine iron breeze, though can improve the capacity factor of a blast furnace; But no matter produce metallized pellet with tunnel, rotary kiln, shaft furnace, converter etc., energy consumption is also very high, and facility investment is also big; Cost is higher, and its output can not satisfy the needs of Iron And Steel Industry smelt iron far away.
In addition, known cokery is by the gas-fired heating chamber, coking chamber, and regenerator or Heat Room are formed, and are furnished with coal loader, pushing machine, coke guide, burn necessary process machinery equipment such as car.Its main technique is: by gas-fired oven heats silica fire resistant brick wall, furnace wall secluding air, and thermal radiation conducted to the clean fine coal in the coking chamber of being packed into by coal loader.Through 16-24 hour time, progressively the destructive distillation coke after the coke maturation, was opened the coke side fire door to clean fine coal, by pushing machine sophisticated coke is pushed out to coke guide under the condition of high temperature secluding air, and the quenching car of packing into is transported to the coke quenching tower quenching, output finished product coke.But the most of producer of the coal gas that produces during the destructive distillation coking coal is not reasonably and effectively used, and middle-size and small-size coke-oven plant major part is lighted discharge with coal gas, and discharge both wasted energy like this, again contaminate environment.Coal gas can not be used for producing granulated iron again.
Coking of shaping coal coproduction sponge iron process method (application number 01101461.X) in first to file is moulded coal and cold bonded iron pelletizing; Put into simultaneously and produce the formed coke cokery, utilized coal gas, complex manufacturing though the interior moulded coal of same coking chamber is produced this method of formed coke and sponge iron after destructive distillation and reduction; Can not produce at existing coke oven; Must change the dress moulded coal method and the feeder of cokery, and the briquette strength of producing do not reach blast furnace with burnt requirement, the gangue of sponge iron does not take off.Just can remove the gangue slag at blast-furnace smelting.
Summary of the invention
The purpose of this invention is to provide a kind of method of utilizing coke oven production reduction granulated iron, it has remedied the defective that existing coke oven can only be produced coke.The present invention does not change the loading method and the device of existing coke oven, only changes the shape of coking coal cake, has efficiently utilized the pyrogenous coal gas of coke oven carbonization to reduce ferrous oxide and has generated granulated iron, has characteristics such as ironmaking cost is low, production technique is simple.
The present invention is a kind of method of utilizing coke oven production reduction granulated iron, accomplishes according to the following steps:
1, at first coking coal is bought the hollow coking coal cake of a middle band rectangular parallelepiped groove.
2, fine iron breeze is added catalyzer and coal dust mixes,, on nodulizer, cause the raw material of ball as reduction granulated iron without grinding.
3, above-mentioned raw materials is put into the hollow coking coal cake medial launder of accomplishing fluently with coking coal, above raw material, covering a layer thickness then is the coking coal of 100mm, pushes carbonizing chamber of coke oven and carries out the destructive distillation carbonization.Raw material ball at high temperature oozes the charcoal fusing under the coal gas effect that the coking coal destructive distillation produces, slag iron separates, and forms granulated iron.
4, behind the formation granulated iron, open coke oven wing furnace door, with coke that burns till and granulated iron, release coke guide by pushing machine, the quenching car of packing into is transported to the coke quenching tower quenching, then coke is separated with granulated iron.
The present invention compares with existing blast furnace technology, and fine iron breeze need not sinter acid pellet into, has reduced investment and environmental pollution; Practice thrift the energy of sintering oxidation pelletizing, need not smelt, wasted a large amount of coke; Ironmaking cost reduces significantly, and remarkable benefit increases, simultaneously under the condition that does not change existing coke oven production technique; Effectively, reasonable use coke oven produce the coal gas of coke, the high temperature of generation and destructive distillation go out coal gas the fine iron breeze reduction are generated granulated iron, are to smelt iron a kind of novel process of operation; Be of great practical significance and far-reaching historical meaning, promotion prospect is wide.
Embodiment
The present invention is a kind of method of utilizing coke oven production reduction granulated iron, accomplishes according to the following steps:
1, at first coking coal is bought the hollow coking coal cake of a middle band rectangular parallelepiped groove, weight in wet base 10%-15% in the coking coal cake.As preferred embodiment, long 13.5 meters of coking coal cake, wide 3.5 meters, high 1 meter, the wide 600mm of trough rim, the thick 300mm of bottom land.According to practical situation, be not limited to above size during concrete production.
2, fine iron breeze is added catalyzer and coal dust mixes.Wherein, described fine iron breeze iron content weight is 60%-65%.Described coal dust is the 10%-15% of fine iron breeze weight; The weight of described catalyzer is the 3-8% of fine iron breeze weight.Catalyzer is szaibelyite, gypsum, vermiculite and the barium carbonate of finely powdered; Weight ratio between szaibelyite, gypsum, vermiculite, the barium carbonate is 4: 1.5: 1: 1, and the catalyst fines particle size is 1mm to the maximum.Above-mentioned raw materials mixes, and without grinding, on nodulizer, causes the raw material of the ball of 35mm as reduction granulated iron.
3, above-mentioned raw materials is put into the hollow coking coal cake medial launder of accomplishing fluently with coking coal, the weight ratio of coking coal cake and raw material is 3: 1.Above raw material, covering a layer thickness then is the coking coal of 100mm, pushes carbonizing chamber of coke oven and carries out the destructive distillation carbonization.Under 1345 ℃-1350 ℃ temperature, secluding air destructive distillation 66-72 hour, raw material ball at high temperature oozes the charcoal fusing under the coal gas effect that the coking coal destructive distillation produces, and slag iron separates, and forms granulated iron.
4, behind the formation granulated iron, open coke oven wing furnace door, with coke that burns till and granulated iron, release coke guide by pushing machine, the quenching car of packing into is transported to the coke quenching tower quenching, then coke is separated with granulated iron.
Embodiment 1
At first putting into coking coal cake trench bottom thickness to coking coal is 300mm, with the tamping machine compacting, steel die is put into coking coal cake groove, adds the coking coal compacting all around; Take out mould then, just make the hollow coking coal cake of rectangular parallelepiped of a band-slot,, add the coal dust of raw material weight 10% again with the fine iron breeze oven dry; 3% above-mentioned catalyzer mixes, and balling-up on nodulizer is in the hollow coking coal cake of the above-mentioned rectangular parallelepiped of making of packing into; Cover the coking coal of 100mm more in the above, push carbonizing chamber of coke oven and carry out dry distillation charring, temperature is controlled at 1350 ℃; The dry distillation charring time, the iron ore concentrate sphere of powder at first was reduced into sponge iron under the effect of coking coal dry distillation gas at 72 hours; Then at high temperature ooze the charcoal fusing, slag iron separates, and forms granulated iron.After forming granulated iron, open coke oven wing furnace door, with coke that burns till and granulated iron, release coke oven, be transported to the coke quenching tower quenching, then coke is separated with granulated iron by pushing machine.
Embodiment 2
At first putting into coking coal cake slot thickness to coking coal is bottom 300mm, with the tamping machine compacting, steel die is put into coking coal cake groove, adds the coking coal compacting all around; Take out mould then, just make the hollow coking coal cake of rectangular parallelepiped of a band-slot,, add the coal dust of raw material weight 11% again with the fine iron breeze oven dry; 4% above-mentioned catalyzer mixes, and balling-up on nodulizer is in the hollow coking coal cake of the above-mentioned rectangular parallelepiped of making of packing into; Cover the coking coal of 100mm more in the above, push carbonizing chamber of coke oven and carry out dry distillation charring, temperature is controlled at 1349 ℃; The dry distillation charring time, the iron ore concentrate sphere of powder at first was reduced into sponge iron under the effect of coking coal dry distillation gas at 71 hours; Then at high temperature ooze the charcoal fusing, slag iron separates, and forms granulated iron.After forming granulated iron, open coke oven wing furnace door, with coke that burns till and granulated iron, release coke oven, be transported to the coke quenching tower quenching, then coke is separated with granulated iron by pushing machine.
Embodiment 3
At first putting into coking coal cake slot thickness to coking coal is bottom 300mm, with the tamping machine compacting, steel die is put into coking coal cake groove, adds the coking coal compacting all around; Take out mould then, just make the hollow coking coal cake of rectangular parallelepiped of a band-slot,, add the coal dust of raw material weight 12% again with the fine iron breeze oven dry; 5% above-mentioned catalyzer mixes, and balling-up on nodulizer is in the hollow coking coal cake of the above-mentioned rectangular parallelepiped of making of packing into; Cover the coking coal of 100mm more in the above, push carbonizing chamber of coke oven and carry out dry distillation charring, temperature is controlled at 1348 ℃; The dry distillation charring time, the iron ore concentrate sphere of powder at first was reduced into sponge iron under the effect of coking coal dry distillation gas at 70 hours; Then at high temperature ooze the charcoal fusing, slag iron separates, and forms granulated iron.After forming granulated iron, open coke oven wing furnace door, with coke that burns till and granulated iron, release coke oven, be transported to the coke quenching tower quenching, then coke is separated with granulated iron by pushing machine.
Embodiment 4
At first putting into coking coal cake slot thickness to coking coal is bottom 300mm, with the tamping machine compacting, steel die is put into coking coal cake groove, adds the coking coal compacting all around; Take out mould then, just make the hollow coking coal cake of rectangular parallelepiped of a band-slot,, add the coal dust of raw material weight 13% again with the fine iron breeze oven dry; 6% above-mentioned catalyzer mixes, and balling-up on nodulizer is in the hollow coking coal cake of the above-mentioned rectangular parallelepiped of making of packing into; Cover the coking coal of 100mm more in the above, push carbonizing chamber of coke oven and carry out dry distillation charring, temperature is controlled at 1347 ℃; The dry distillation charring time, the iron ore concentrate sphere of powder at first was reduced into sponge iron under the effect of coking coal dry distillation gas at 69 hours; Then at high temperature ooze the charcoal fusing, slag iron separates, and forms granulated iron.After forming granulated iron, open coke oven wing furnace door, with coke that burns till and granulated iron, release coke oven, be transported to the coke quenching tower quenching, then coke is separated with granulated iron by pushing machine.
Embodiment 5
At first put into coking coal cake groove to coking coal, bottom 300mm with the tamping machine compacting, puts into coking coal cake groove with steel die; Add the coking coal compacting all around, take out mould then, just make the hollow coking coal cake of rectangular parallelepiped of a band-slot, again fine iron breeze is dried; Add the coal dust of raw material weight 14%, 7% above-mentioned catalyzer mixes, balling-up on nodulizer; Pack in the hollow coking coal cake of the above-mentioned rectangular parallelepiped of making, cover the coking coal of 100mm more in the above, push carbonizing chamber of coke oven and carry out dry distillation charring, temperature is controlled at 1346 ℃; The dry distillation charring time, the iron ore concentrate sphere of powder at first was reduced into sponge iron under the effect of coking coal dry distillation gas at 68 hours; Then at high temperature ooze the charcoal fusing, slag iron separates, and forms granulated iron.After forming granulated iron, open coke oven wing furnace door, with coke that burns till and granulated iron, release coke oven, be transported to the coke quenching tower quenching, then coke is separated with granulated iron by pushing machine.
Embodiment 6
At first put into coking coal cake groove to coking coal, bottom 300mm with the tamping machine compacting, puts into coking coal cake groove with steel die; Add the coking coal compacting all around, take out mould then, just make the hollow coking coal cake of rectangular parallelepiped of a band-slot, again fine iron breeze is dried; Add the coal dust of raw material weight 15%, 8% above-mentioned catalyzer mixes, balling-up on nodulizer; Pack in the hollow coking coal cake of the above-mentioned rectangular parallelepiped of making, cover the coking coal of 100mm more in the above, push carbonizing chamber of coke oven and carry out dry distillation charring, temperature is controlled at 1345 ℃; The dry distillation charring time, the iron ore concentrate sphere of powder at first was reduced into sponge iron under the effect of coking coal dry distillation gas at 66 hours; Then at high temperature ooze the charcoal fusing, slag iron separates, and forms granulated iron.After forming granulated iron, open coke oven wing furnace door, with coke that burns till and granulated iron, release coke oven, be transported to the coke quenching tower quenching, then coke is separated with granulated iron by pushing machine.
Claims (8)
1. a method of utilizing coke oven production reduction granulated iron, completion according to the following steps:
1), at first coking coal is bought the hollow coking coal cake of a middle band rectangular parallelepiped groove;
2), fine iron breeze is added catalyzer and coal dust mixes,, on nodulizer, cause the raw material of ball as reduction granulated iron without grinding;
3), above-mentioned raw materials is put into the hollow coking coal cake medial launder of accomplishing fluently with coking coal; Above raw material, covering a layer thickness then is the coking coal of 100mm; Push carbonizing chamber of coke oven and carry out the destructive distillation carbonization, raw material ball at high temperature oozes the charcoal fusing under the coal gas effect that the coking coal destructive distillation produces; Slag iron separates, and forms granulated iron;
4), form granulated iron after, open coke oven wing furnace door, with coke that burns till and granulated iron, release coke guide by pushing machine, the quenching car of packing into is transported to the coke quenching tower quenching, then coke is separated with granulated iron.
2. the method for reduction granulated iron according to claim 1 is in step 1): weight in wet base 10%-15% in the coking coal cake.
3. according to the method for claim 1,2 described reduction granulated iron, in step 1): the coking coal cake is grown 13.5 meters, and is wide 3.5 meters, high 1 meter, the wide 600mm of trough rim, the thick 300mm of bottom land.
4. according to the method for claim 1,2 described reduction granulated iron, in step 2) in: described fine iron breeze iron content weight is 60%-65%, and described coal dust is the 10%-15% of fine iron breeze weight.
5. according to the method for claim 1,2 described reduction granulated iron, in step 2) in: the weight of described catalyzer is the 3-8% of fine iron breeze weight.Catalyzer is szaibelyite, gypsum, vermiculite and the barium carbonate of finely powdered.
6. the method for reduction granulated iron according to claim 5 is in step 2) in: the weight ratio between szaibelyite, gypsum, vermiculite, the barium carbonate is 4: 1.5: 1: 1, and the catalyst fines particle size is 1mm to the maximum.
7. according to the method for claim 1,2 described reduction granulated iron, in step 3): the weight ratio of coking coal cake and raw material is 3: 1.
8. according to the method for claim 6,7 described reduction granulated iron, in step 3): carrying out the destructive distillation carbonization in the stove carbonization chamber is under 1345 ℃-1350 ℃ temperature, secluding air destructive distillation 66-72 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100829434A CN102605128A (en) | 2012-03-27 | 2012-03-27 | Method for producing and reducing grained iron by coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100829434A CN102605128A (en) | 2012-03-27 | 2012-03-27 | Method for producing and reducing grained iron by coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102605128A true CN102605128A (en) | 2012-07-25 |
Family
ID=46522891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100829434A Pending CN102605128A (en) | 2012-03-27 | 2012-03-27 | Method for producing and reducing grained iron by coke oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102605128A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140831A (en) * | 2014-08-08 | 2014-11-12 | 赵昱 | Method for dry distillation and quality improvement of low-metamorphic coal |
| CN105695653A (en) * | 2016-03-25 | 2016-06-22 | 首钢总公司 | Production method and system for prereduction iron-containing furnace burden |
| WO2020216320A1 (en) * | 2019-04-25 | 2020-10-29 | 李海鸥 | Method for reducing oxide ores by using square carbonization chamber of coking plant |
-
2012
- 2012-03-27 CN CN2012100829434A patent/CN102605128A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140831A (en) * | 2014-08-08 | 2014-11-12 | 赵昱 | Method for dry distillation and quality improvement of low-metamorphic coal |
| CN105695653A (en) * | 2016-03-25 | 2016-06-22 | 首钢总公司 | Production method and system for prereduction iron-containing furnace burden |
| WO2020216320A1 (en) * | 2019-04-25 | 2020-10-29 | 李海鸥 | Method for reducing oxide ores by using square carbonization chamber of coking plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018094886A1 (en) | Direct reduction process of coal-based shaft furnace | |
| CN104119939B (en) | A kind of ironmaking hot pressing iron coke and preparation method thereof | |
| CN101892382B (en) | Method for extracting high-content nickel, chromium and iron from stainless steel dust | |
| CN104878147A (en) | Method for making iron by smelting reduction | |
| CN102162018A (en) | Iron making method by rotary hearth furnace direct reduction-grinding and separation treatment of high-phosphorus oolitic hematite | |
| CN103131816B (en) | Method for producing spongy iron through dual-based reduction and special chamber type smelting vertical furnace therefor | |
| CN102498190A (en) | Process for producing ferro coke | |
| CN105112577A (en) | Dry granulating blast furnace slag waste heat recovery device and blast furnace slag waste heat recovery method | |
| CN100441701C (en) | Method for producing reduced iron compact in rotary hearth reducing furnace, reduced iron compact, and method for producing pig iron using the same | |
| CN107779534B (en) | Process for treating zinc-containing and iron dust and mud in iron and steel plant by shaft furnace method | |
| CN103993163A (en) | System and process for producing iron powder from iron ore by direct reduction in belt-type roasting machine and rotary kiln | |
| CN101492752A (en) | Reduction-fusion iron manufacturing process for coal-bearing pellets | |
| CN102344981A (en) | Separation and direct reduction process of iron and boron in boron-containing iron ore concentrate | |
| CN102605128A (en) | Method for producing and reducing grained iron by coke oven | |
| CN102605127A (en) | Method for reducing and producing cast iron by coke oven | |
| WO2010041770A1 (en) | Blast furnace operating method using carbon-containing unfired pellets | |
| JP5512205B2 (en) | Strength improvement method of raw material for agglomerated blast furnace | |
| CN103255302A (en) | Process for producing vanadium-nitrogen alloy by plasma nitrogen gas | |
| KR20130008935A (en) | Process for producing pellet with carbonaceous material incorporated therein | |
| CN101638703B (en) | Method for directly reducing nickel containing pig iron by lateritic nickel in tunnel kiln | |
| CN106222351A (en) | A kind of rotary hearth furnace multilamellar pelletizing synchronizes the method for reduction | |
| CN109385526B (en) | Method for reducing metal oxidized minerals by using reduction furnace of coke-oven plant | |
| WO2020216320A1 (en) | Method for reducing oxide ores by using square carbonization chamber of coking plant | |
| CN102140575B (en) | Novel metallurgy and casting integration method | |
| CN103805729A (en) | Method for producing low-sulfur pig iron for steel manufacture by using rotary hearth furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120725 |