CN108396139A - Tar residue cold-bonded pellet and preparation and use methods thereof - Google Patents
Tar residue cold-bonded pellet and preparation and use methods thereof Download PDFInfo
- Publication number
- CN108396139A CN108396139A CN201710064825.3A CN201710064825A CN108396139A CN 108396139 A CN108396139 A CN 108396139A CN 201710064825 A CN201710064825 A CN 201710064825A CN 108396139 A CN108396139 A CN 108396139A
- Authority
- CN
- China
- Prior art keywords
- iron
- containing waste
- tar
- tar slag
- cooled agglomerated
- 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
- 239000008188 pellet Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 239000011273 tar residue Substances 0.000 title abstract 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 136
- 229910052742 iron Inorganic materials 0.000 claims abstract description 68
- 239000002893 slag Substances 0.000 claims abstract description 61
- 239000002699 waste material Substances 0.000 claims abstract description 39
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003546 flue gas Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000002918 waste heat Substances 0.000 claims abstract description 7
- 238000006722 reduction reaction Methods 0.000 claims abstract description 5
- 238000013019 agitation Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 2
- 239000011269 tar Substances 0.000 abstract description 59
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 4
- 239000004484 Briquette Substances 0.000 abstract 3
- 238000000227 grinding Methods 0.000 abstract 2
- 238000003825 pressing Methods 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 abstract 1
- 230000023556 desulfurization Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000010907 mechanical stirring Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002910 solid waste Substances 0.000 abstract 1
- 238000005453 pelletization Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011280 coal tar Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012056 semi-solid material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0025—Adding carbon material
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a tar slag cold-bonded pellet and a preparation and use method thereof, wherein the tar slag cold-bonded pellet comprises the following components in percentage by weight: 60-75% of tar residues and 25-40% of iron-containing waste materials. Adding the tar residues and the iron-containing waste materials into a stirring type intensive mixer in proportion through a screw conveyor to mix, carrying out mixed grinding for 30-50 min in a mixing and grinding machine, pressing the mixture into a briquette through a cold-pressing forming machine, heating the wet briquette by using waste flue gas waste heat with the temperature of less than 350 ℃, fully infiltrating a viscous body formed after the tar residues are softened and adsorbing the viscous body on the surface of the iron-containing waste materials, and naturally drying the viscous body for 1-2 days to obtain the cold-cured briquette. And adding the cooled agglomerated pellets into a KR stirring desulfurization tank for mechanical stirring, so that molten iron generates vortex, the dynamic and thermodynamic conditions of reduction reaction are met, and iron in the iron-containing waste is reduced by using carbon elements in tar residues. The recovery rate of iron resources reaches more than 98 percent, the reutilization of tar residues and the common utilization of various solid wastes are realized, the production cost can be effectively reduced, the resources are saved, and the environment is protected.
Description
Technical field
The invention belongs to metallurgical waste process field more particularly to a kind of cooled agglomerated pellet prepared using tar slag and its systems
Standby and application method.
Background technology
A large amount of by-product coal tar are generated in coke production, the pure tar extracted from coal tar can be used as blast furnace combustion
Material, or other industrial chemicals such as therefrom extract gasoline, and extract the waste residue i.e. tar slag of pure tar remnants, then it never has very
Good processing method.Mainly there are three sources for coke-oven plant's tar slag：First, mechanization tar ammonia defecator, tar ammonia mixing
Object is detached in mechanical settling tank by proportion difference, and the heavy collection of tar slag is continuously arranged in defecator bottom by scrapper conveyor
Go out, tar slag is semi-solid material herein, is the main source of coke-oven plant's tar slag.Second is that tar after natural subsidence, also contains
The subtleer tar slag for having not free settling reduces containing for slag in tar by further purifying tar slag with ultracentrifuge
Amount ensures that tar deep processing quality requirement, the tar slag detached by centrifuge, the mainly tar with slag are half liquid
Body substance is the second largest source of tar slag.Third, the clear slot tar slag after tar storage tank natural subsidence, consistency are clear between mechanization
Clearly between slot tar slag and ultracentrifuge tar slag.Tar slag denominator is sticky mass, is easily bonded, winter easy freezing
At bulk, well damage is polluted to transporting equipment.
Currently, the main processing mode of tar slag is that waste residue is transported to disposal site, this will not only spend a large amount of fortune
Take, occupied ground, increases production cost, and pollute the environment.These tar slags are made full use of, to realizing that resource utilizes again
It is all very beneficial with environmental protection.Also there is coal chemical enterprise to return tar slag and carry out coking with feed coal.Tar slag prepares moulded coal
In the process, it due to tar slag poor fluidity, needs to make it have mobility after being previously heated to certain temperature, it is recycled to flow
Viscosity under dynamic state is mixed with other coals.
So far, the application of tar slag is also only limited to coal-blending coking field, in other respects also few applications.
Invention content
The present invention provides a kind of mechanical agitation using KR (KambaraReactor) stirring desulphurization tank sweetening process, makes iron
Water generates whirlpool, meets the dynamic conditions and thermodynamic condition of reduction reaction, to handle the cooled agglomerated pellet prepared by tar slag
Method.The purpose is to realize the common utilization of the recycling of tar slag and many kinds of solids waste material, production cost is reduced, saves money
Source, environmental protection.
For this purpose, the technical solution that the present invention is taken is：
A kind of tar slag cooled agglomerated pellet, weight percentages of components are：Tar slag 60~75%, iron-containing waste 25~
40%；
The iron-containing waste is revolving furnace mud, blast furnace ore tank is grey and iron sheet, wherein：Revolving furnace mud account for iron-containing waste total amount 24~
40%, blast furnace ore tank ash accounts for the 30~52% of iron-containing waste total amount, and iron sheet accounts for the 24~44% of iron-containing waste total amount.
A kind of preparation method of tar slag cooled agglomerated pellet adds tar slag by screw conveyor in proportion with iron-containing waste
Enter to stirring-type intensive mixer after mixing, is sent to kolleroang, 30~50min of mixed grind in kolleroang, then through being cold-pressed into
Type machine is pressed into wet bulb group, then with the flue gas waste heat generated in the steel manufacture process of 350 DEG C of temperature ＜ by wet bulb group plus
Heat reaches 100~110 DEG C, and the included moisture content of each component is steamed together, and it is viscous so that tar slag is formed at such a temperature
Thick body fully infiltrates and is adsorbed on iron-containing waste surface, and the interface between iron-containing waste disappears, and mutually bonds, dries naturally later
1~2 day, tar slag cooled agglomerated pellet is made.
Tar slag cooled agglomerated pellet is added to KR stirring desulphurizations by a kind of application method of tar slag cooled agglomerated pellet by feed bin
In tank, using the mechanical agitation of KR, so that molten iron is generated whirlpool, meet the dynamic conditions and thermodynamic condition of reduction reaction, profit
With a large amount of carbons contained in tar slag, the iron in iron-containing waste is restored.
Beneficial effects of the present invention are：
Tar slag and iron-containing waste are mixed in a certain ratio by the present invention, and through pressure forming machine cold moudling, tar is made
Slag cooled agglomerated pellet, pelletizing fully meet metallurgical requirement, and dry bulb compression strength is up to 3000N or more.Pelletizing is added to KR
In stirring, since KR stirrings make molten iron generate whirlpool, meets the dynamic conditions and thermodynamic condition of reduction reaction, restore
Iron recycles the purpose of iron in iron-containing waste to realize being effectively treated for tar slag.Cooled agglomerated pellet is made of waste material completely, no
Binder need to be in addition added, the iron resource rate of recovery is up to 98% or more.Tar slag not only can be recycled, also be realized
The common utilization of many kinds of solids waste material economizes on resources so as to greatly reduce production cost, avoids environmental pollution, protection ring
Border.
Specific implementation mode
Embodiment each raw material component percentage is mass percent.
Embodiment 1：
60% tar slag is added to and is stirred through screw conveyor and 10% revolving furnace mud, 15% blast furnace ore tank ash and 15% iron sheet
The mixing of formula intensive mixer is mixed, kolleroang is then arrived, the mixed grind 30min in kolleroang is uniformly mixed；Exist again through chilling press
It is pressed into wet bulb group under 240 tons of pressure, wet bulb is rolled into a ball with flue gas (350 DEG C of the ＜) waste heat in steel manufacture process and is heated, is made
Pelletizing temperature reaches 102 DEG C, it is ensured that the viscous body that the tar slag in component is formed at such a temperature, which is fully infiltrated and is adsorbed on, to be contained
Iron scraped surface, the interface between iron-containing waste disappear, mutually bond, place 1 day naturally later, its dry bulb resistance to compression is surveyed after drying
Intensity is 3000N.Cooled agglomerated pellet is added to by feed bin in KR stirring desulphurization tanks again, using the mechanical agitation of KR, makes molten iron
Whirlpool is generated, using a large amount of carbons are contained in tar slag, the iron in iron-containing waste is restored.The iron resource rate of recovery is reachable
98%.
Embodiment 2：
65% tar slag is added to and is stirred through screw conveyor and 14% revolving furnace mud, 12% blast furnace ore tank ash and 9% iron sheet
The mixing of formula intensive mixer is mixed, kolleroang is then arrived, the mixed grind 40min in kolleroang is uniformly mixed, exists through chilling press
It is pressed into wet bulb group under 260 tons of pressure, wet bulb is rolled into a ball with flue gas (350 DEG C of the ＜) waste heat in steel manufacture process and is heated, is made
Pelletizing temperature reaches 105 DEG C, it is ensured that the viscous body that the tar slag in component is formed at such a temperature, which is fully infiltrated and is adsorbed on, to be contained
Iron scraped surface, the interface between iron-containing waste disappear, mutually bond, place 1 day naturally later, its dry bulb resistance to compression is surveyed after drying
Intensity is 3200N.Cooled agglomerated pellet is added to by feed bin in KR stirring desulphurization tanks again, using the mechanical agitation of KR, makes molten iron
Whirlpool is generated, using a large amount of carbons are contained in tar slag, the iron in iron-containing waste is restored.The iron resource rate of recovery is reachable
98%.
Embodiment 3：
70% tar slag is added to stirring through screw conveyor and 8% revolving furnace mud, 9% blast furnace ore tank ash and 13% iron sheet
Formula intensive mixer mixes, and then arrives kolleroang, the mixed grind 50min in kolleroang, is uniformly mixed, through chilling press 280
It is pressed into wet bulb group under ton pressure, wet bulb is rolled into a ball with flue gas (350 DEG C of the ＜) waste heat in steel manufacture process and is heated, pelletizing is made
Temperature reaches 104 DEG C, it is ensured that the viscous body that the tar slag in component is formed at such a temperature, which fully infiltrates and is adsorbed on iron content, to give up
Expect surface, the interface between iron-containing waste disappears, and mutually bonds, and places 1 day naturally later, its dry bulb compression strength is surveyed after dry
For 3300N.Cooled agglomerated pellet is added to by feed bin in KR stirring desulphurization tanks again, using the mechanical agitation of KR, molten iron is made to generate
Whirlpool is restored the iron in iron-containing waste using a large amount of carbons are contained in tar slag.The iron resource rate of recovery is reachable
99%.
Embodiment 4：
75% tar slag is added to stirring through screw conveyor and 6% revolving furnace mud, 13% blast furnace ore tank ash and 6% iron sheet
Formula intensive mixer mixes, and then arrives kolleroang, the mixed grind 30min in kolleroang, is uniformly mixed, through chilling press 300
Compression moulding under ton pressure, wet bulb is rolled into a ball with flue gas (350 DEG C of the ＜) waste heat in steel manufacture process and is heated, make pelletizing temperature
Reach 108 DEG C, it is ensured that the viscous body that the tar slag in component is formed at such a temperature fully infiltrates and is adsorbed on iron-containing waste table
Face, the interface between iron-containing waste disappear, mutually bond, and surveying its dry bulb compression strength after placement drying in 1 day naturally later is
3000N.Cooled agglomerated pellet is added to by feed bin in KR stirring desulphurization tanks again, using the mechanical agitation of KR, molten iron is made to generate whirlpool
Whirlpool is restored the iron in iron-containing waste using a large amount of carbons are contained in tar slag.The iron resource rate of recovery is up to 98%.
Claims (3)
1. a kind of tar slag cooled agglomerated pellet, which is characterized in that its weight percentages of components is：Tar slag 60~75%, iron content are useless
Material 25~40%；
The iron-containing waste is revolving furnace mud, blast furnace ore tank is grey and iron sheet, wherein：Revolving furnace mud account for iron-containing waste total amount 24~
40%, blast furnace ore tank ash accounts for the 30~52% of iron-containing waste total amount, and iron sheet accounts for the 24~44% of iron-containing waste total amount.
2. a kind of tar slag cooled agglomerated pellet preparation method as described in claim 1, it is characterised in that：
Tar slag is proportionally added into stirring-type intensive mixer after mixing by screw conveyor and iron-containing waste, is sent
To kolleroang, 30~50min of mixed grind in kolleroang, then it is pressed into wet bulb group through chilling press, then use 350 DEG C of temperature ＜
Steel manufacture process in the flue gas waste heat that generates wet bulb rolled into a ball heat, reach 100~110 DEG C, by each component from
The viscous body that band moisture content steams, and tar slag is made to be formed at such a temperature together fully infiltrates and is adsorbed on iron-containing waste surface,
Interface between iron-containing waste disappears, and mutually bonds, dries naturally later 1~2 day, and tar slag cooled agglomerated pellet is made.
3. a kind of application method of tar slag cooled agglomerated pellet preparation method as claimed in claim 2, it is characterised in that：
Tar slag cooled agglomerated pellet is added to by feed bin in KR stirring desulphurization tanks, using the mechanical agitation of KR, molten iron is made to generate
Whirlpool meets the dynamic conditions and thermodynamic condition of reduction reaction, using a large amount of carbons contained in tar slag, by iron content
Iron in waste material restores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064825.3A CN108396139A (en) | 2017-02-05 | 2017-02-05 | Tar residue cold-bonded pellet and preparation and use methods thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064825.3A CN108396139A (en) | 2017-02-05 | 2017-02-05 | Tar residue cold-bonded pellet and preparation and use methods thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108396139A true CN108396139A (en) | 2018-08-14 |
Family
ID=63093429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710064825.3A Pending CN108396139A (en) | 2017-02-05 | 2017-02-05 | Tar residue cold-bonded pellet and preparation and use methods thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108396139A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2151911A1 (en) * | 1970-10-19 | 1972-04-20 | Cold Bound Pettets Ab | Process for the production of cold-bound agglomerates from particulate iron ore concentrate |
| SE7506594L (en) * | 1975-06-09 | 1976-12-10 | Graenges Ab | DEVICE FOR THE MANUFACTURE OF COLD-BOUND PELLETS |
| CN1116240A (en) * | 1995-05-18 | 1996-02-07 | 吕美竺 | Method of direct steel-smelting of cooled agglomerated pellet |
| CN103468942A (en) * | 2013-09-07 | 2013-12-25 | 鞍钢股份有限公司 | Composite adhesive for hot-pressed iron coke and preparation method thereof |
| CN104073631A (en) * | 2013-03-27 | 2014-10-01 | 鞍钢股份有限公司 | Method for preparing iron-containing waste material cold-bonded pellets by using tar residues |
-
2017
- 2017-02-05 CN CN201710064825.3A patent/CN108396139A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2151911A1 (en) * | 1970-10-19 | 1972-04-20 | Cold Bound Pettets Ab | Process for the production of cold-bound agglomerates from particulate iron ore concentrate |
| SE7506594L (en) * | 1975-06-09 | 1976-12-10 | Graenges Ab | DEVICE FOR THE MANUFACTURE OF COLD-BOUND PELLETS |
| CN1116240A (en) * | 1995-05-18 | 1996-02-07 | 吕美竺 | Method of direct steel-smelting of cooled agglomerated pellet |
| CN104073631A (en) * | 2013-03-27 | 2014-10-01 | 鞍钢股份有限公司 | Method for preparing iron-containing waste material cold-bonded pellets by using tar residues |
| CN103468942A (en) * | 2013-09-07 | 2013-12-25 | 鞍钢股份有限公司 | Composite adhesive for hot-pressed iron coke and preparation method thereof |
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Application publication date: 20180814 |