WO2008039088A1 - Reductant for blast furnace charge - Google Patents
Reductant for blast furnace charge Download PDFInfo
- Publication number
- WO2008039088A1 WO2008039088A1 PCT/PL2007/000066 PL2007000066W WO2008039088A1 WO 2008039088 A1 WO2008039088 A1 WO 2008039088A1 PL 2007000066 W PL2007000066 W PL 2007000066W WO 2008039088 A1 WO2008039088 A1 WO 2008039088A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coke
- reductant
- blast furnace
- crumbled
- furnace charge
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/008—Composition or distribution of the charge
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
- C21B5/023—Injection of the additives into the melting part
- C21B5/026—Injection of the additives into the melting part of plastic material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2200/00—Recycling of non-gaseous waste material
-
- 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
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
-
- 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
Definitions
- the invention relates to a reductant for blast furnace charge.
- a known blast furnace charge includes in its composition iron-bearing materials such as crumbled iron tube, sinter, and/or pellets, and slag- forming additives, and reductants being carbon, and hydrocarbons such as coke, coal, crude oil, natural gas and plastics, where coke in the blast furnace process serves not only as a reductant, but serves also as a necessary carrier for the charge.
- iron-bearing materials such as crumbled iron tube, sinter, and/or pellets, and slag- forming additives, and reductants being carbon, and hydrocarbons such as coke, coal, crude oil, natural gas and plastics, where coke in the blast furnace process serves not only as a reductant, but serves also as a necessary carrier for the charge.
- the known blast furnace charge contains following amounts of ingredients in recalculation to one metric ton of the pig-iron obtained: 720-1480 kg of sinter, 25-350 kg of iron ore, 100-770 kg of pellets, 280-410 kg of coke, 0-180 kg of coal, 0-60 kg of heavy oil, 0-10 kg of lime, 2-8 kg of materials from recycling and 0-30 kg of plastics.
- 720-1480 kg of sinter 25-350 kg of iron ore
- 100-770 kg of pellets 100-770 kg of pellets
- 280-410 kg of coke 0-180 kg of coal
- 0-60 kg of heavy oil 0-10 kg of lime
- 2-8 kg of materials from recycling and 0-30 kg of plastics 0-30 kg of plastics.
- the object of the present invention and as well the technical problem that requires solving, is to develop a new ingredient of the reductant for blast furnace charge in order to enable significant decrease of coke consumption and at the same time increase of yield of the pig-iron obtained and significant improvement of the natural environment protection.
- the reductant for blast furnace charge as one of the ingredients of these reductants, is composed of crumbled rubber tyres of vehicles together with their metal cord used in the amount up to 150 kg for one metric ton of pig-iron.
- crumbled rubber tyres of vehicles together with their metal cord are used instead of coke in the amount of 25-40% of the amount of the coke intended to be used.
- the crumbled pieces of rubber tyres together with their metal cord are of dimensions not exceeding 50 cm.
- crumbled tyres of car vehicles together with their metal cord as one of the ingredients in the composition of reductants enabled to decrease significantly consumption of expensive coke, and at the same time to obtain energy value per unit comparable to coke energy amounting to approx. 12 GJ per one metric ton of pig-iron, and also to increase significantly the yield of the pig-iron, as remelted metal cord of tyres becomes a part of the pig-iron.
- the additional advantage of using crumbled tyres as the ingredient of reductants for blast furnace charge is elimination of waste tyres from legal and illegal yards, and as a result significant improvement of natural environment of a man.
- Example 1 The subject of the invention is presented in the following examples of quality and quantity compositions of reductants for blast furnace charge containing rubber tyres, but these examples do not limit its scope.
- Example 1 The subject of the invention is presented in the following examples of quality and quantity compositions of reductants for blast furnace charge containing rubber tyres, but these examples do not limit its scope.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a reductant for blast furnace charge containing: lump iron ore, sinter and/or pellets, slag-forming additives, advantageously limestone and reductants such as coke, coal, heavy oil, natural gas and plastics. According to the invention the reductant is characterized in that it is composed of crumbled rubber tyres of vehicles together with their metal cord used in the amount up to 150 kg for one metric ton of pig-iron, and the crumbled rubber tyres of vehicles together with their metal cord are used instead of coke in the amount of 25-40% of the amount of the coke intended to be used, while the rubber tyres together with their metal cord are crumbled to pieces of dimensions not exceeding 50 cm.
Description
REDUCTANT FOR BLAST FURNACE CHARGE
TECHNICAL FIELD
The invention relates to a reductant for blast furnace charge.
BACKGROUND ART
A known blast furnace charge includes in its composition iron-bearing materials such as crumbled iron tube, sinter, and/or pellets, and slag- forming additives, and reductants being carbon, and hydrocarbons such as coke, coal, crude oil, natural gas and plastics, where coke in the blast furnace process serves not only as a reductant, but serves also as a necessary carrier for the charge. In general the known blast furnace charge contains following amounts of ingredients in recalculation to one metric ton of the pig-iron obtained: 720-1480 kg of sinter, 25-350 kg of iron ore, 100-770 kg of pellets, 280-410 kg of coke, 0-180 kg of coal, 0-60 kg of heavy oil, 0-10 kg of lime, 2-8 kg of materials from recycling and 0-30 kg of plastics. At the same time, when selecting adequate composition of the blast furnace charge, one takes into account, in addition to waste gas emissions defined in appropriate norms, also the quantity of the energy used for production of one metric ton of pig-iron, what is also connected with the quantity of the coke used and the quantity of the pig-iron obtained from the composition of the charge.
DISCLOSURE OF INVENTION
The object of the present invention, and as well the technical problem that requires solving, is to develop a new ingredient of the
reductant for blast furnace charge in order to enable significant decrease of coke consumption and at the same time increase of yield of the pig-iron obtained and significant improvement of the natural environment protection.
According the present invention, the reductant for blast furnace charge, as one of the ingredients of these reductants, is composed of crumbled rubber tyres of vehicles together with their metal cord used in the amount up to 150 kg for one metric ton of pig-iron.
Preferably crumbled rubber tyres of vehicles together with their metal cord are used instead of coke in the amount of 25-40% of the amount of the coke intended to be used. Preferably the crumbled pieces of rubber tyres together with their metal cord are of dimensions not exceeding 50 cm.
It was unexpectedly found out that use of crumbled tyres of car vehicles together with their metal cord as one of the ingredients in the composition of reductants enabled to decrease significantly consumption of expensive coke, and at the same time to obtain energy value per unit comparable to coke energy amounting to approx. 12 GJ per one metric ton of pig-iron, and also to increase significantly the yield of the pig-iron, as remelted metal cord of tyres becomes a part of the pig-iron. The additional advantage of using crumbled tyres as the ingredient of reductants for blast furnace charge is elimination of waste tyres from legal and illegal yards, and as a result significant improvement of natural environment of a man.
BEST MODE OF CARRYING OUT THE INVENTION
The subject of the invention is presented in the following examples of quality and quantity compositions of reductants for blast furnace charge containing rubber tyres, but these examples do not limit its scope.
Example 1
The quantity and quality composition of reductants in recalculation to one metric ton of pig-iron.
- coke - 280-410 kg/t
- crumbled rubber tyres with metal cord - 10-50 kg/t
- coal - 0-180 kg/t
- heavy oil - 0-60 kg/t
- natural gas - 50-230 kg/t .
- plastics - 0-30 kg/t
Example 2
The quantity and quality composition of reductants in recalculation to one metric ton of pig-iron.
- coke - 210-230 kg/t
- crumbled rubber tyres with metal cord - 70- 180 kg/t
- coal - 0-180 kg/t
- heavy oil - 0-60 kg/t
- natural gas - 50-230 kg/t
- plastics - 0-30 kg/t
Example 3
The quantity and quality composition of reductants in recalculation to one metric ton of pig-iron.
coke - 280-260 kg/t crumbled rubber tyres with metal cord - 0-150 kg/t coal - 0-180 kg/t heavy oil - 0-60 kg/t natural gas - 50-230 kg/t plastics - 0-30 kg/t
Claims
1. A reductant for blast furnace charge containing: lump iron ore, sinter and/or pellets, slag-forming additives, advantageously limestone, and reductants such as coke, coal, heavy oil, natural gas, and plastics, characterized in that it is composed of crumbled rubber tyres of vehicles together with their metal cord used in the amount up to 150 kg for one metric ton of pig-iron.
2. A reductant for blast furnace charge according to claim 1, characterized in that the crumbled rubber tyres of vehicles together with their metal cord are used instead of coke in the amount of 25-40% of the amount of the coke intended to be used.
3. A reductant for blast furnace charge according to claim 1 or 2, characterized in that the rubber tyres together with their metal cord are crumbled to pieces of dimensions not exceeding 50 cm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PLP380708 | 2006-09-28 | ||
| PL38070806A PL380708A1 (en) | 2006-09-28 | 2006-09-28 | Large-furnace charge reducing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008039088A1 true WO2008039088A1 (en) | 2008-04-03 |
Family
ID=38969884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/PL2007/000066 WO2008039088A1 (en) | 2006-09-28 | 2007-09-19 | Reductant for blast furnace charge |
Country Status (2)
| Country | Link |
|---|---|
| PL (1) | PL380708A1 (en) |
| WO (1) | WO2008039088A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115011745A (en) * | 2022-01-31 | 2022-09-06 | 昆明理工大学 | Method for preparing blast furnace blowing waste tire and pulverized coal mixed fuel and blowing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175949A (en) * | 1977-08-15 | 1979-11-27 | Endre Breznay | Process for perishing waste rubber materials, especially worn out motor vehicle rubber tires by recovering their components for industrial purposes |
| EP0656516A1 (en) * | 1993-12-03 | 1995-06-07 | AMSTED Industries Incorporated | Alloy material addition method and apparatus for smelting and melting furnaces |
| JP2001152215A (en) * | 1999-11-19 | 2001-06-05 | Tokyo Kozai Kk | Method in melting furnace, such as vertical type shaft furnace, cupola, blast furnace, rotary kiln |
| KR20060104255A (en) * | 2005-03-29 | 2006-10-09 | 주식회사 동산에스엔알 | Pig iron manufacture method of material and device that do waste tire to heat soure and contains ferrite oxide |
-
2006
- 2006-09-28 PL PL38070806A patent/PL380708A1/en not_active Application Discontinuation
-
2007
- 2007-09-19 WO PCT/PL2007/000066 patent/WO2008039088A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175949A (en) * | 1977-08-15 | 1979-11-27 | Endre Breznay | Process for perishing waste rubber materials, especially worn out motor vehicle rubber tires by recovering their components for industrial purposes |
| EP0656516A1 (en) * | 1993-12-03 | 1995-06-07 | AMSTED Industries Incorporated | Alloy material addition method and apparatus for smelting and melting furnaces |
| JP2001152215A (en) * | 1999-11-19 | 2001-06-05 | Tokyo Kozai Kk | Method in melting furnace, such as vertical type shaft furnace, cupola, blast furnace, rotary kiln |
| KR20060104255A (en) * | 2005-03-29 | 2006-10-09 | 주식회사 동산에스엔알 | Pig iron manufacture method of material and device that do waste tire to heat soure and contains ferrite oxide |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115011745A (en) * | 2022-01-31 | 2022-09-06 | 昆明理工大学 | Method for preparing blast furnace blowing waste tire and pulverized coal mixed fuel and blowing method thereof |
| CN115011745B (en) * | 2022-01-31 | 2024-03-01 | 昆明理工大学 | Method for preparing blast furnace injection waste tire and pulverized coal mixed fuel and injection method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| PL380708A1 (en) | 2008-03-31 |
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