CN105861833B - A kind of method of Combined Treatment copper ashes and chromium slag - Google Patents
A kind of method of Combined Treatment copper ashes and chromium slag Download PDFInfo
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- CN105861833B CN105861833B CN201610405355.8A CN201610405355A CN105861833B CN 105861833 B CN105861833 B CN 105861833B CN 201610405355 A CN201610405355 A CN 201610405355A CN 105861833 B CN105861833 B CN 105861833B
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- Prior art keywords
- copper ashes
- chromium slag
- percentage
- slag
- weight
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- 239000002893 slag Substances 0.000 title claims abstract description 48
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000010949 copper Substances 0.000 title claims abstract description 38
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 38
- 239000002956 ash Substances 0.000 title claims abstract description 36
- 235000002918 Fraxinus excelsior Nutrition 0.000 title claims abstract description 34
- 239000011651 chromium Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 21
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 17
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000000292 calcium oxide Substances 0.000 claims abstract description 34
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 34
- RQLWXPCFUSHLNV-UHFFFAOYSA-N [Cr].[Ca] Chemical compound [Cr].[Ca] RQLWXPCFUSHLNV-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000005453 pelletization Methods 0.000 claims abstract description 17
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 16
- 239000003245 coal Substances 0.000 claims abstract description 16
- 239000010436 fluorite Substances 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 14
- 231100000614 poison Toxicity 0.000 claims abstract description 14
- 239000003440 toxic substance Substances 0.000 claims abstract description 13
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 239000000440 bentonite Substances 0.000 claims abstract description 7
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 235000012216 bentonite Nutrition 0.000 description 7
- 206010013786 Dry skin Diseases 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 229910001634 calcium fluoride Inorganic materials 0.000 description 3
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 210000000492 nasalseptum Anatomy 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 208000006673 asthma Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 201000005242 bronchial neoplasm Diseases 0.000 description 1
- 206010006451 bronchitis Diseases 0.000 description 1
- BCFSVSISUGYRMF-UHFFFAOYSA-N calcium;dioxido(dioxo)chromium;dihydrate Chemical compound O.O.[Ca+2].[O-][Cr]([O-])(=O)=O BCFSVSISUGYRMF-UHFFFAOYSA-N 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- PXLIDIMHPNPGMH-UHFFFAOYSA-N sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 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
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/06—Alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
-
- 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)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention discloses a kind of method of Combined Treatment copper ashes and chromium slag, comprises the following steps：A, by copper ashes, have calcium chromium slag, reduction coal, fluorite and bentonite at less than 150 DEG C dry, then be finely ground to below 200 mesh mix obtain compound；B, gained compound is subjected to pressure ball, obtains pelletizing, and made pelletizing is dried and obtains dry bulb group；C, gained dry bulb is rolled into a ball and quick lime is melted in electric furnace, refined after melting down, obtain ferrosilicon and removing toxic substances slag.The Combined Treatment copper ashes of the present invention and the method for chromium slag, using copper ashes, there are calcium chromium slag, reduction coal, fluorite, bentonite and quick lime as raw material, obtain ferrosilicon and removing toxic substances slag；By Cr in chromium slag6+Thoroughly removing toxic substances, realize copper ashes and there are the synthesis renewable resources of calcium chromium slag.
Description
Technical field
The invention belongs to technical field of smelting, more particularly to a kind of method of Combined Treatment copper ashes and chromium slag.
Background technology
It is that chrome ore has calcium roasting technique to produce discarded object to have calcium chromium slag, in addition to containing elements such as calcium, magnesium, iron, silicon, aluminium, also
Contain a certain amount of chromium, its water-soluble and acid soluble Cr6+(Cr VI) has severe toxicity, and ecological environment around can be caused to continue
The pollution of property.
Chromium slag is oozed, the hexavalent chromium such as water-soluble sodium chromate, acid-soluble calcium chromate is over the ground under sewage overflow by rainwater molten leaching
Different degrees of contamination hazard is caused in lower water, river and marine site etc., causes the hair of animal dead, the agriculture underproduction and human body diseases
It is raw.Poisonous chromium compound can also result in the diseases such as allergyRespiratory apparatus can be caused mucous membrane damage nasal septum bleeding, rot with
To the disease such as perforation of nasal septum and sphagitis, asthma, acute pneumonia, bronchitis, tumor of bronchus.
The copper yield in China has occupied the first in the world, in the production process of copper, generates substantial amounts of copper ashes, copper ashes heap
Slag field be present, not only land occupation but also polluted environment, even more the huge waste of resource.Contain substantial amounts of available money in copper ashes
Source, silicone content is 20~40% in copper ashes, iron content 30~50%.The recycling of copper ashes is realized, developing can realize have
The isolation technics of valency component renewable resources, has important practical significance to national economy and development in science and technology.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of method of Combined Treatment copper ashes and chromium slag, has in chromium slag
Cr6+The effect thoroughly detoxified, realize copper ashes and there are the synthesis renewable resources of calcium chromium slag.
The present invention provides a kind of method of Combined Treatment copper ashes and chromium slag, comprises the following steps：
A, by copper ashes, there is calcium chromium slag, reduction coal, fluorite and bentonite to be dried at less than 150 DEG C, then be finely ground to
Mixed below 200 mesh and obtain compound, the copper ashes, have calcium chromium slag, reduction coal, fluorite and bentonitic mass ratio=100：30
~50：20~35：1~10：1~10；
B, gained compound is subjected to pressure ball, obtains pelletizing, and made pelletizing is dried and obtains dry bulb group；
C, gained dry bulb is rolled into a ball and quick lime is melted in electric furnace, mass ratio=100 of the dry bulb group and quick lime：
5~20, refined after melting down, obtain ferrosilicon and removing toxic substances slag.
As preferable scheme, Fe percentage by weight is 35~50wt%, SiO in the copper ashes2Percentage by weight
>=30wt%.
As preferable scheme, there is percentage by weight >=25wt% of CaO in calcium chromium slag.
As preferable scheme, C percentage by weight >=80wt% in the reduction coal, S percentage by weight≤
0.8wt%.
As preferable scheme, CaF in the fluorite2Percentage by weight >=80wt%.
As preferable scheme, CaO percentage by weight >=85wt% in the quick lime.
Further, in step B pelletizing 20~50mm of granularity.
Pelletizing is dried at less than 150 DEG C in the step B of the present invention.
Specifically, a length of 20~40min when being refined in the step C.
Specifically, the granularity of the quick lime is 20~50mm.
The Combined Treatment copper ashes of the present invention and the method for chromium slag, by copper ashes, have calcium chromium slag, reduction coal, fluorite and bentonite
Pressure ball after mixing, melted in electric furnace with quick lime after gained pelletizing is dried, refined after melting down, obtain ferrosilicon and removing toxic substances
Slag；By Cr in chromium slag6+Thoroughly removing toxic substances, realize copper ashes and there are the synthesis renewable resources of calcium chromium slag.
In the present invention, mm represents millimeter, and min represents minute, and wt% represents percentage by weight.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention.
Embodiment
Below in conjunction with drawings and examples, the embodiment of the present invention is described in more details, so as to energy
The advantages of enough more fully understanding the solution of the present invention and its various aspects.However, specific embodiments described below and implementation
Example is for illustrative purposes only, rather than limitation of the present invention.
The present invention provides a kind of method of Combined Treatment copper ashes and chromium slag, as shown in figure 1, comprising the following steps：
A, by copper ashes, there is calcium chromium slag, reduction coal, fluorite and bentonite to be dried at less than 150 DEG C, then be finely ground to
Mixed below 200 mesh and obtain compound, the copper ashes, have calcium chromium slag, reduction coal, fluorite and bentonitic mass ratio=100：30
~50：20~35：1~10：1~10；
B, gained compound is subjected to pressure ball, obtains pelletizing, 20~50mm of granularity of pelletizing, and made pelletizing is less than
Dried at 150 DEG C and obtain dry bulb group；
C, gained dry bulb is rolled into a ball and quick lime is melted in electric furnace, mass ratio=100 of the dry bulb group and quick lime：
5~20,20~40min is refined after melting down, obtains ferrosilicon and removing toxic substances slag.
As preferable scheme, Fe percentage by weight is 35~50wt%, SiO in the copper ashes2Percentage by weight
>=30wt%.
As preferable scheme, there is percentage by weight >=25wt% of CaO in calcium chromium slag.
As preferable scheme, C percentage by weight >=80wt% in the reduction coal, S percentage by weight≤
0.8wt%.
As preferable scheme, CaF in the fluorite2Percentage by weight >=80wt%.
As preferable scheme, CaO percentage by weight >=85wt% in the quick lime.
Specifically, the granularity of the quick lime is 20~50mm.
The present invention Combined Treatment copper ashes and chromium slag method, by copper ashes, have calcium chromium slag, reduction coal, fluorite, bentonite and
Quick lime obtains ferrosilicon and removing toxic substances slag as raw material；By Cr in chromium slag6+Thoroughly removing toxic substances, realize copper ashes and have the comprehensive of calcium chromium slag
Close renewable resources.
Embodiment
Embodiment 1
Step 1: by 100 parts of copper ashes (Fe：41.2%, SiO2：31.5%), 32 parts have calcium chromium slag (CaO：25.5%), 22
Part reduction coal (C：80.8%, S：0.6%), 3 parts of fluorite (CaF2：82.3%), 5 parts of bentonites are in 110 DEG C of dryings, then its is thin
It is milled to below 200 mesh and mixes acquisition compound.
Step 2: by compound pressure ball obtained by step 1, pellet size 50mm, and by made pelletizing in 105 DEG C of dryings
Obtain dry bulb group.
Step 3: dry bulb obtained by step 3 is rolled into a ball into the 5% quick lime (CaO with dry bulb quality：88.2%), quick lime grain
50mm is spent, electric furnace is put into and is melted, 40min is refined after melting down, obtains ferrosilicon and removing toxic substances slag.
Embodiment 2
Step 1: by 100 parts of copper ashes (Fe：42.3%, SiO2：32.2%), 35 parts have calcium chromium slag (CaO：28.5%), 25
Part reduction coal (C：85.8%, S：0.5%), 8 parts of fluorite (CaF2：83.3%), 3 parts of bentonites are in 110 DEG C of dryings, then its is thin
It is milled to below 200 mesh and mixes acquisition compound.
Step 2: by compound pressure ball obtained by step 1, pellet size 20mm, and by made pelletizing in 105 DEG C of dryings
Obtain dry bulb group.
Step 3: dry bulb obtained by step 3 is rolled into a ball into the 15% quick lime (CaO with dry bulb quality：82.2%), quick lime
Granularity 40mm, it is put into electric furnace and is melted, 20min is refined after melting down, obtains ferrosilicon and removing toxic substances slag.
Embodiment 3
Step 1: by 100 parts of copper ashes (Fe：43.5%, SiO2：34.5%), 50 parts have calcium chromium slag (CaO：27.6%), 35
Part reduction coal (C：82.5%, S：On 0. 5%), 5 parts of fluorite (CaF2：83.2%), 8 parts of bentonites are in 110 DEG C of dryings, then by its
It is finely ground to below 200 mesh and mixes acquisition compound.
Step 2: by compound pressure ball obtained by step 1, pellet size 2mm, and made pelletizing is obtained in 105 DEG C of dryings
Obtain dry bulb group.
Step 3: dry bulb obtained by step 3 is rolled into a ball into the 20% quick lime (CaO with dry bulb quality：85.2%), quick lime
Granularity 20mm, it is put into electric furnace and is melted, 30min is refined after melting down, obtains ferrosilicon and removing toxic substances slag.
It should be noted that each embodiment above by reference to described by accompanying drawing only limits this to illustrate rather than
The scope of invention, it will be understood by those within the art that, it is right under the premise without departing from the spirit and scope of the present invention
The modification or equivalent substitution that the present invention is carried out, all should cover within the scope of the present invention.It is in addition, signified unless the context
Outside, the word occurred in the singular includes plural form, and vice versa.In addition, unless stated otherwise, then any embodiment
All or part of can combine any other embodiment all or part of use.
Claims (10)
1. a kind of method of Combined Treatment copper ashes and chromium slag, comprises the following steps：
A, by copper ashes, there is calcium chromium slag, reduction coal, fluorite and bentonite to be dried at less than 150 DEG C, then be finely ground to granularity and be
Below 200 mesh, mix and obtain compound, the copper ashes, have calcium chromium slag, reduction coal, fluorite and bentonitic mass ratio=100：
30~50：20~35：1~10：1~10；
B, gained compound is subjected to pressure ball, obtains pelletizing, and made pelletizing is dried and obtains dry bulb group；
C, gained dry bulb is rolled into a ball and quick lime is melted in electric furnace, mass ratio=100 of the dry bulb group and quick lime：5~
20, refined after melting down, obtain ferrosilicon and removing toxic substances slag.
2. according to the method for claim 1, it is characterised in that in the copper ashes Fe percentage by weight be 35~
50wt%, SiO2Percentage by weight >=30wt%.
3. according to the method for claim 1, it is characterised in that it is described have a CaO in calcium chromium slag percentage by weight >=
25wt%.
4. according to the method for claim 1, it is characterised in that C percentage by weight >=80wt%, S in the reduction coal
Percentage by weight≤0.8wt%.
5. according to the method for claim 1, it is characterised in that CaF in the fluorite2Percentage by weight >=80wt%.
6. according to the method for claim 1, it is characterised in that CaO percentage by weight >=85wt% in the quick lime.
7. according to the method for claim 1, it is characterised in that 20~50mm of granularity of pelletizing in step B.
8. according to the method for claim 1, it is characterised in that pelletizing is dried at less than 150 DEG C in the step B.
9. according to the method for claim 1, it is characterised in that a length of 20~40min when being refined in the step C.
10. according to the method for claim 1, it is characterised in that the granularity of the quick lime is 20~50mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405355.8A CN105861833B (en) | 2016-06-08 | 2016-06-08 | A kind of method of Combined Treatment copper ashes and chromium slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405355.8A CN105861833B (en) | 2016-06-08 | 2016-06-08 | A kind of method of Combined Treatment copper ashes and chromium slag |
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| Publication Number | Publication Date |
|---|---|
| CN105861833A CN105861833A (en) | 2016-08-17 |
| CN105861833B true CN105861833B (en) | 2017-12-15 |
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| CN106319124A (en) * | 2016-09-08 | 2017-01-11 | 江苏省冶金设计院有限公司 | Preparing method for ferrochrome silicon alloy |
| CN109371233B (en) * | 2018-11-30 | 2019-07-26 | 广东省资源综合利用研究所 | One kind heavy metal sewage sludge containing chromium and ion dust mud contaning cooperative processing method |
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| CN1059370A (en) * | 1990-08-31 | 1992-03-11 | 黄石市无机盐厂 | Chromium residue detoxifying, smelting contain the method for chromium pig iron |
| CN101195863A (en) * | 2007-12-20 | 2008-06-11 | 金川集团有限公司 | Method for producing iron alloy with smelted furnace cinder |
| CN101875987B (en) * | 2009-12-02 | 2013-06-05 | 吐鲁番沈宏金属工业有限责任公司 | Method for smelting low chromium pig iron by utilizing chromium slag |
| CN103484682A (en) * | 2012-06-14 | 2014-01-01 | 内蒙古鄂尔多斯冶金有限责任公司 | Method for adopting nickel or copper smelting waste slag for ferrosilicon smelting |
| CN104694755A (en) * | 2015-02-06 | 2015-06-10 | 铜陵百荣新型材料铸件有限公司 | Method for preparing silicon-vanadium-iron alloy by use of copper slag and waste slag of high-vanadium iron production |
| CN105018722A (en) * | 2015-08-12 | 2015-11-04 | 唐竹胜 | Method for separating and reducing iron powder from refractory mineral, complex ore and iron-containing waste materials |
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