WO2003102251A1 - Verfahren zum sintern von eisenoxidhaltigen stoffen auf einer sintermaschine - Google Patents
Verfahren zum sintern von eisenoxidhaltigen stoffen auf einer sintermaschine Download PDFInfo
- Publication number
- WO2003102251A1 WO2003102251A1 PCT/DE2003/001812 DE0301812W WO03102251A1 WO 2003102251 A1 WO2003102251 A1 WO 2003102251A1 DE 0301812 W DE0301812 W DE 0301812W WO 03102251 A1 WO03102251 A1 WO 03102251A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sintering
- exhaust gas
- gas
- sintering machine
- solid fuel
- Prior art date
Links
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
- C22B1/16—Sintering; Agglomerating
- C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
-
- 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
- C22B1/16—Sintering; Agglomerating
- C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
- C22B1/205—Sintering; Agglomerating in sintering machines with movable grates regulation of the sintering process
Definitions
- the invention relates to a method for sintering iron oxide-containing substances on a sintering machine having a sintering belt, suction boxes and an ignition furnace, according to the preamble of patent claim 1.
- the sintering of iron oxide-containing substances is carried out on sintering machines.
- the sinter mixture consisting of the iron ore, return material, solid fuel and aggregates, is charged onto the sintering belt and the fuel is ignited on the surface of the material bed under the ignition furnace.
- Fresh air is then sucked through the sinter bed and the sinter front moves from top to bottom through the sinter bed.
- the exhaust gas is sucked into the gas collection system from the suction boxes under the upper run of the sintered bed and, after cleaning, discharged into the atmosphere.
- the sintering process requires heat transfer between the hot combustion gas and the cold solid.
- the amount of solids and the amount of air are heat equivalent.
- the exhaust gas contains evaporated water from the sintering mixture, CO 2 from the combustion of the fuel and from calcination processes, sulfur oxides from the combustion of sulfur - mainly from the added fuel - CO from incomplete combustion, false air and air that flows between the side walls of the grate wagon Feed enters the exhaust gas unused.
- the exhaust gas also contains dioxins and furans, in particular the exhaust gas drawn off from the rear part of the sintering belt.
- the exhaust gas also carries dust with it, which must be removed.
- the object of the invention is to further optimize the sintering process so that solid fuel is saved while the amount of exhaust gas remains low and the sintering quality is good.
- a gaseous energy source is used for the partial to almost complete substitution of the solid fuel.
- the exhaust gas from the blast furnace blast furnace gas
- the limit of the desired substitution is determined by the required ignitability of the sintered mixture.
- blast furnace gas contains H2 in addition to CO, which burns faster and is particularly effective.
- the wedge-shaped band of the sintered front can thus be kept narrower and the amount of exhaust gas reduced.
- blast furnace gas is produced inexpensively in the iron and steel works.
- the process can be further optimized if part of the exhaust gas is returned to the sintering machine in a known manner and the other part of the exhaust gas is removed as residual gas. In such a case, the gaseous energy source would be fed into the return line for the exhaust gas.
- the amount of exhaust gas circulated has the further effect that the required oxygen requirement is lower compared to a normal process. In the extreme case, this allows the need to be covered with the oxygen brought in by the sucked-in false air. This saves the fresh air that would otherwise have to be supplied separately.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003273377A AU2003273377A1 (en) | 2002-05-29 | 2003-05-27 | Method for sintering iron oxide-containing substances on a sintering machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10224419.7 | 2002-05-29 | ||
DE2002124419 DE10224419A1 (de) | 2002-05-29 | 2002-05-29 | Verfahren zum Sintern von eisenoxidhaltigen Stoffen auf einer Sintermaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003102251A1 true WO2003102251A1 (de) | 2003-12-11 |
Family
ID=29557466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/001812 WO2003102251A1 (de) | 2002-05-29 | 2003-05-27 | Verfahren zum sintern von eisenoxidhaltigen stoffen auf einer sintermaschine |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003273377A1 (de) |
DE (1) | DE10224419A1 (de) |
WO (1) | WO2003102251A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111417610A (zh) * | 2016-08-26 | 2020-07-14 | 沙特基础工业全球技术有限公司 | 通过冷烧结方法获得的陶瓷-聚合物复合材料 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1015697A3 (fr) * | 2003-09-29 | 2005-07-05 | Ct Rech Metallurgiques Asbl | Procede ameliore d'agglomeration de minerals de fer sur grille mobile. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE914355C (de) * | 1951-08-10 | 1954-07-01 | Metallgesellschaft Ag | Verfahren zum Brennen oder Brennen und Sintern |
DE1069579B (de) * | 1959-11-26 | |||
DE4219491A1 (de) * | 1992-01-25 | 1993-07-29 | Metallgesellschaft Ag | Verfahren zum sintern von eisenoxidhaltigen stoffen auf einer sintermaschine |
-
2002
- 2002-05-29 DE DE2002124419 patent/DE10224419A1/de not_active Withdrawn
-
2003
- 2003-05-27 WO PCT/DE2003/001812 patent/WO2003102251A1/de not_active Application Discontinuation
- 2003-05-27 AU AU2003273377A patent/AU2003273377A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1069579B (de) * | 1959-11-26 | |||
DE914355C (de) * | 1951-08-10 | 1954-07-01 | Metallgesellschaft Ag | Verfahren zum Brennen oder Brennen und Sintern |
DE4219491A1 (de) * | 1992-01-25 | 1993-07-29 | Metallgesellschaft Ag | Verfahren zum sintern von eisenoxidhaltigen stoffen auf einer sintermaschine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111417610A (zh) * | 2016-08-26 | 2020-07-14 | 沙特基础工业全球技术有限公司 | 通过冷烧结方法获得的陶瓷-聚合物复合材料 |
Also Published As
Publication number | Publication date |
---|---|
AU2003273377A1 (en) | 2003-12-19 |
DE10224419A1 (de) | 2003-12-18 |
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