CN108588440A - The method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in a kind of oxidation of carbon dioxide - Google Patents
The method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in a kind of oxidation of carbon dioxide Download PDFInfo
- Publication number
- CN108588440A CN108588440A CN201710303896.4A CN201710303896A CN108588440A CN 108588440 A CN108588440 A CN 108588440A CN 201710303896 A CN201710303896 A CN 201710303896A CN 108588440 A CN108588440 A CN 108588440A
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- China
- Prior art keywords
- carbon dioxide
- slag
- copper ashes
- cleaning furnace
- iron
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 81
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 40
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 40
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 39
- 239000010949 copper Substances 0.000 title claims abstract description 39
- 239000002893 slag Substances 0.000 title claims abstract description 37
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000002956 ash Substances 0.000 title claims abstract description 29
- 235000002918 Fraxinus excelsior Nutrition 0.000 title claims abstract description 28
- 238000004140 cleaning Methods 0.000 title claims abstract description 19
- 230000003647 oxidation Effects 0.000 title claims description 11
- 238000007254 oxidation reaction Methods 0.000 title claims description 11
- 239000003034 coal gas Substances 0.000 claims abstract description 20
- 230000005291 magnetic effect Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000007885 magnetic separation Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 239000002243 precursor Substances 0.000 claims abstract description 3
- 239000000376 reactant Substances 0.000 claims abstract description 3
- 239000007921 spray Substances 0.000 claims description 10
- 238000010792 warming Methods 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 230000008771 sex reversal Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052840 fayalite Inorganic materials 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000153 supplemental effect Effects 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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0054—Slag, slime, speiss, or dross treating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- 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
- C22B1/005—Preliminary treatment of scrap
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of carbon dioxide to aoxidize the method for realizing that iron resource effectively recycles in slag cleaning furnace copper ashes, belongs to resource and energy technology field.After the progress heating treatment of high temperature slag cleaning furnace molten copper slag is fully melted to copper ashes, it is passed through carbon dioxide gas precursor reactant, coal gas of high temperature and slag are generated in the process, and coal gas of high temperature obtains coal gas through gas gathering system and compressibility, and slag obtains magnetic iron ore after cooling, broken, magnetic separation.This technique can realize the energy sex reversal of the effective recycling and carbon dioxide of iron resource in slag cleaning furnace copper ashes, significant in resource and high efficiency of energy utilization orientation, have preferable industrial prospect.
Description
Technical field
The present invention relates to a kind of carbon dioxide to aoxidize the method for realizing that iron resource effectively recycles in slag cleaning furnace copper ashes, belongs to
Resource and energy technology field.
Background technology
In recent years, China's development of iron ＆ steel industry is rapid, has occupied world wide production first place for many years.But China's iron ore produces speedup
Far below the speedup of steel production capacity, and domestic iron ore resource has that the more rich ores of lean ore are few, more metal association Complex Iron Ores mostly and
The defect that iron ore resource is in short supply, grade is low, but iron ore demand rises year by year, import dependency degree is big, high-quality iron ore price
Go up, the contradiction of China's steel and iron industry raw materials for production shortage is caused to become increasingly conspicuous, iron-making and steel-making cost increases severely, and weakens steel work
The profit margin of industry has seriously affected the steel fast development in China.
Therefore, it is buffer China's iron ore deposit one to find a kind of supplemental resources of iron ore as iron-making and steel-making raw material
Effective solution mode.According to statistics, the copper of 1 ton of production can generate 2.2 tons of copper ashes, and China's copper yield in 2015 is 7,960,000
The copper ashes amount of ton, corresponding output is 1971.2 ten thousand tons.The general cupric iron content of copper ashes 40% or so, it can be seen that iron has in copper ashes
Higher recycling value.
Chalybeate is mainly mutually 2FeO SiO in slag cleaning furnace copper ashes2（Fayalite）And Fe3O4（Magnetic iron ore）, existing time
It receives there are mainly two types of research methods, aoxidizes magnetization method and smelting reduction process.It is mainly O wherein to aoxidize oxide isolation in magnetization method2
Or air, and peroxidating phenomenon is susceptible in technique, iron is become into bloodstone phase, is unfavorable for the ferromagnetic raising for selecting the rate of recovery；
In smelting reduction process, copper object is mutually easy to be reduced out and be combined with iron, and iron product application value obtained by reduction is made to reduce.
How to be an important problem in actual production by the application of slag cleaning furnace copper ashes.
Invention content
The present invention is directed to problems of the prior art and deficiency, and it is poor that the present invention provides a kind of carbon dioxide oxidation realization
Change the method that iron resource effectively recycles in electric furnace copper ashes.Present invention combination CO2Weak oxide feature turns FeO objects phase in copper ashes
Become Fe3O4Object phase, CO2It is converted into coal gas of high temperature, it can be recycled by gas gathering system and compressibility.This technique can
The energy sex reversal for realizing the effective recycling and carbon dioxide of iron resource in slag cleaning furnace copper ashes, utilizes in resource and high efficiency of energy
Direction is significant, has preferable industrial prospect.The invention is realized by the following technical scheme.
The method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in a kind of oxidation of carbon dioxide, by high temperature slag cleaning furnace
After molten copper slag progress heating treatment is fully melted to copper ashes, it is passed through carbon dioxide gas precursor reactant, generates high temperature in the process
Coal gas and slag, coal gas of high temperature obtain coal gas through gas gathering system and compressibility, and slag obtains after cooling, broken, magnetic separation
Magnetic iron ore.
The temperature that is warming up to is 1280 DEG C~1450 DEG C.
The carbon dioxide gas is sprayed by spray gun, and carbon dioxide gas jetting pressure is 0.15~2.0MPa, spray gun
The depth for being inserted into molten bath is the 1/4~1/2 of molten bath total height, and the flow of carbon dioxide gas is 40~200mL/min.
The reaction time is 30~180min.
The beneficial effects of the invention are as follows：
（1）This process makes full use combines CO2FeO objects in copper ashes are mutually oriented and are changed into Fe by weak oxide feature3O4Object phase, work
Skill controllability is strong；
（2）Under FeO object phase separations, using copper cinder high-temperature physical thermal by CO2It is converted into coal gas of high temperature, energy conversion effect is bright
It is aobvious, there is Important Academic meaning in low-carbon metallurgy direction；
（3）Each technical process is easy to operate, there is good application prospect.
Description of the drawings
Fig. 1 is present invention process flow chart.
Specific implementation mode
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
As shown in Figure 1, the method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in carbon dioxide oxidation, by high temperature dilution
Electric furnace molten copper slag（1200 DEG C of temperature, TFe=41.59wt%, TFeO=45.59wt%）It is transferred in electric furnace and is carried out by tundish
Be warming up to temperature be 1300 DEG C after copper ashes fully melts, be passed through carbon dioxide gas（Carbon dioxide gas is sprayed by spray gun,
Carbon dioxide gas jetting pressure is 1.5MPa, and the depth that spray gun is inserted into molten bath is the 2/5 of molten bath total height, carbon dioxide gas
Flow be 200mL/min）60min is reacted, generates coal gas of high temperature and slag in the process, coal gas of high temperature is through gas gathering system
Coal gas is obtained with compressibility, slag obtains magnetic iron ore after cooling, broken, magnetic separation（Containing Fe94%）.
The iron resource rate of recovery is 92% in above-mentioned technique.
Embodiment 2
As shown in Figure 1, the method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in carbon dioxide oxidation, by high temperature dilution
Electric furnace molten copper slag（1230 DEG C of temperature, TFe=44.59wt%, TFeO=48.59wt%）It is transferred in electric furnace and is carried out by tundish
Be warming up to temperature be 1280 DEG C after copper ashes fully melts, be passed through carbon dioxide gas（Carbon dioxide gas is sprayed by spray gun,
Carbon dioxide gas jetting pressure is 0.15MPa, and the depth that spray gun is inserted into molten bath is the 1/4 of molten bath total height, carbon dioxide gas
The flow of body is 40mL/min）180min is reacted, generates coal gas of high temperature and slag in the process, coal gas of high temperature is through gas collection system
System and compressibility obtain coal gas, and slag obtains magnetic iron ore after cooling, broken, magnetic separation（Containing Fe92%）.
The iron resource rate of recovery is 90% in above-mentioned technique.
Embodiment 3
As shown in Figure 1, the method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in carbon dioxide oxidation, by high temperature dilution
Electric furnace molten copper slag（1210 DEG C of temperature, TFe=40.34wt%, TFeO=43.27wt%）It is transferred in electric furnace and is carried out by tundish
Be warming up to temperature be 1450 DEG C after copper ashes fully melts, be passed through carbon dioxide gas（Carbon dioxide gas is sprayed by spray gun,
Carbon dioxide gas jetting pressure is 2MPa, and the depth that spray gun is inserted into molten bath is the 1/2 of molten bath total height, carbon dioxide gas
Flow is 100mL/min）React 30min, generate coal gas of high temperature and slag in the process, coal gas of high temperature through gas gathering system and
Compressibility obtains coal gas, and slag obtains magnetic iron ore after cooling, broken, magnetic separation（Containing Fe97%）.
The iron resource rate of recovery is 95% in above-mentioned technique.
The specific implementation mode of the present invention is explained in detail above in association with attached drawing, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (4)
1. the method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in a kind of carbon dioxide oxidation, it is characterised in that：It will be high
After warm slag cleaning furnace molten copper slag progress heating treatment is fully melted to copper ashes, it is passed through carbon dioxide gas precursor reactant, in this process
Middle generation coal gas of high temperature and slag, coal gas of high temperature obtain coal gas through gas gathering system and compressibility, slag through cooling, it is broken,
Magnetic iron ore is obtained after magnetic separation.
2. the method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in carbon dioxide oxidation according to claim 1,
It is characterized in that：The temperature that is warming up to is 1280 DEG C~1450 DEG C.
3. the method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in carbon dioxide oxidation according to claim 1,
It is characterized in that：The carbon dioxide gas is sprayed by spray gun, and carbon dioxide gas jetting pressure is 0.15~2.0MPa, spray
The depth that rifle is inserted into molten bath is the 1/4~1/2 of molten bath total height, and the flow of carbon dioxide gas is 40~200mL/min.
4. the method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in carbon dioxide oxidation according to claim 1,
It is characterized in that：The reaction time is 30~180min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710303896.4A CN108588440A (en) | 2017-05-03 | 2017-05-03 | The method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in a kind of oxidation of carbon dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710303896.4A CN108588440A (en) | 2017-05-03 | 2017-05-03 | The method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in a kind of oxidation of carbon dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108588440A true CN108588440A (en) | 2018-09-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710303896.4A Pending CN108588440A (en) | 2017-05-03 | 2017-05-03 | The method that iron resource effectively recycles in slag cleaning furnace copper ashes is realized in a kind of oxidation of carbon dioxide |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100708A (en) * | 2006-07-07 | 2008-01-09 | 隋智通 | Method for separating iron and copper from copper smelt slag |
| CN101148701A (en) * | 2007-09-06 | 2008-03-26 | 昆明理工大学 | Method for modifying non-ferrous metal copper slag/nickel slag by using combustible matter and preparing high-grade fuel |
| US20120132032A1 (en) * | 2010-11-29 | 2012-05-31 | Basf Corporation | Magnetic recovery of valuables from slag material |
| CN104846209A (en) * | 2015-05-29 | 2015-08-19 | 东北大学 | System and method for recovering iron and waste heat from molten copper residues respectively through step-by-step reduction and coal gasification |
-
2017
- 2017-05-03 CN CN201710303896.4A patent/CN108588440A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100708A (en) * | 2006-07-07 | 2008-01-09 | 隋智通 | Method for separating iron and copper from copper smelt slag |
| CN101148701A (en) * | 2007-09-06 | 2008-03-26 | 昆明理工大学 | Method for modifying non-ferrous metal copper slag/nickel slag by using combustible matter and preparing high-grade fuel |
| US20120132032A1 (en) * | 2010-11-29 | 2012-05-31 | Basf Corporation | Magnetic recovery of valuables from slag material |
| CN104846209A (en) * | 2015-05-29 | 2015-08-19 | 东北大学 | System and method for recovering iron and waste heat from molten copper residues respectively through step-by-step reduction and coal gasification |
Non-Patent Citations (1)
| Title |
|---|
| 戚翠芬主编: "《轧钢原料加热》", 31 January 2013, 冶金工业出版社 * |
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Application publication date: 20180928 |
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