CN105861833A - Method for combined treatment of copper slags and chromium slags - Google Patents
Method for combined treatment of copper slags and chromium slags Download PDFInfo
- Publication number
- CN105861833A CN105861833A CN201610405355.8A CN201610405355A CN105861833A CN 105861833 A CN105861833 A CN 105861833A CN 201610405355 A CN201610405355 A CN 201610405355A CN 105861833 A CN105861833 A CN 105861833A
- Authority
- CN
- China
- Prior art keywords
- slags
- weight
- quick lime
- copper ashes
- percentage
- 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.)
- Granted
Links
- 239000002893 slag Substances 0.000 title claims abstract description 54
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 38
- 239000010949 copper Substances 0.000 title claims abstract description 38
- 239000011651 chromium Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 20
- 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
- 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
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 10
- 239000000440 bentonite Substances 0.000 claims abstract description 10
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 30
- 239000002956 ash Substances 0.000 claims description 30
- RQLWXPCFUSHLNV-UHFFFAOYSA-N [Cr].[Ca] Chemical compound [Cr].[Ca] RQLWXPCFUSHLNV-UHFFFAOYSA-N 0.000 claims description 18
- 238000005453 pelletization Methods 0.000 claims description 15
- 231100000614 poison Toxicity 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000003440 toxic substance Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 9
- 229910052681 coesite Inorganic materials 0.000 claims description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229910052682 stishovite Inorganic materials 0.000 claims description 6
- 229910052905 tridymite Inorganic materials 0.000 claims description 6
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 2
- 238000007670 refining Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910001634 calcium fluoride Inorganic materials 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 239000000155 melt Substances 0.000 description 2
- 210000000492 nasalseptum Anatomy 0.000 description 2
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 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
- 229910001430 chromium ion Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 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
- 210000004877 mucosa Anatomy 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000002688 persistence Effects 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
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 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
- 239000002699 waste material Substances 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 invention discloses a method for combined treatment of copper slags and chromium slags. The method comprises the following steps that A, copper slags, calcium-contained chromium slags, reduction coal, fluorite and bentonite are dried under the temperature lower than 150 DEG C, finely ground to 200 meshes or below, and mixed to be uniform to obtain a mixture; B, the mixture is pressed into balls, and the obtained balls are dried to obtain dry balls; C, the dry balls and quick lime are molten in an electric furnace, refining is performed after melting down, and ferrosilicon and detoxicated slags are obtained. According to the method for combined treatment of copper slags and chromium slags, copper slags, calcium-contained chromium slags, reduction coal, fluorite, bentonite and quick lime are adopted as raw materials, and ferrosilicon and detoxicated slags are obtained; Cr6+ in chromium slags is detoxicated thoroughly, and copper slags and calcium-contained chromium slags are comprehensively recycled.
Description
Technical field
The invention belongs to technical field of smelting, particularly relate to a kind of Combined Treatment copper ashes and the method for chromium slag.
Background technology
Have calcium chromium slag be chrome ore have calcium roasting technique produce garbage, except containing calcium, magnesium, ferrum, silicon,
Outside the elements such as aluminum, possibly together with a certain amount of chromium, its water solublity and acid soluble Cr6+(Cr VI) has
There is severe toxicity, ecological environment around can be caused the pollution of persistence.
Chromium slag, by the molten pouring of rainwater, oozes under sewage overflow, water solublity sodium chromate, acid-soluble calcium chromate etc. six
Contamination hazard in various degree is caused in subsoil water, river and marine site etc. by valency chromium ion, causes animal dead
Die, the agricultural underproduction and the generation of human body diseases.Poisonous chromium compound can also result in the diseases such as allergyRight
It is hemorrhage, rotten down to perforation of nasal septum and pharyngolaryngitis, gas that respiratory organ official can cause mucosa to damage nasal septum
Breathe heavily, the disease such as acute pneumonia, bronchitis, tumor of bronchus.
The copper yield of China has occupied the first in the world, in the production process of copper, creates substantial amounts of
Copper ashes, there is slag field in copper ashes heap, not only land occupation but also pollute environment, the huge waste of resource especially.
Containing substantial amounts of available resource in copper ashes, in copper ashes, silicone content is 20～40%, iron content
30～50%.Realize the recycling of copper ashes, be developed to realize the separation of valuable component renewable resources
Technology, has important practical significance to national economy and development in science and technology.
Summary of the invention
In order to solve the problems referred to above, the present invention proposes a kind of Combined Treatment copper ashes and the method for chromium slag, tool
Have Cr in chromium slag6+The thoroughly effect of removing toxic substances, it is achieved copper ashes and the comprehensive renewable resources having calcium chromium slag.
The present invention provides a kind of Combined Treatment copper ashes and the method for chromium slag, comprises the steps:
A, by copper ashes, have calcium chromium slag, reduction coal, fluorite and bentonite at less than 150 DEG C be dried,
Be finely ground to again below 200 mesh mixing obtain compound, described 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 carried out pressure ball, it is thus achieved that pelletizing, and made pelletizing is dried acquisition dry bulb group；
C, gained dry bulb group and quick lime are melted at electric furnace, described dry bulb group and the matter of quick lime
Amount ratio=100:5～20, refine after melting down, it is thus achieved that ferrosilicon and removing toxic substances slag.
As preferred scheme, in described copper ashes, the percentage by weight of Fe is 35～50wt%, SiO2's
Percentage by weight >=30wt%.
As preferred scheme, there is the percentage by weight >=25wt% of CaO in calcium chromium slag.
As preferred scheme, the percentage by weight >=80wt% of C in described reduction coal, the weight hundred of S
Proportion by subtraction≤0.8wt%.
As preferred scheme, CaF in described fluorite2Percentage by weight >=80wt%.
As preferred scheme, the percentage by weight >=85wt% of CaO in described quick lime.
Further, the granularity 20～50mm of pelletizing in step B.
In described step B of the present invention, pelletizing is dried at less than 150 DEG C.
Concrete, in described step C during refine a length of 20～40min.
Concrete, the granularity of described 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,
Pressure ball after fluorite and bentonite mixing, gained pelletizing is dried and quick lime melts at electric furnace, treats
Melting down rear refine, it is thus achieved that ferrosilicon and removing toxic substances slag；By Cr in chromium slag6+Thoroughly removing toxic substances, it is achieved that copper ashes and
There is the comprehensive renewable resources of calcium chromium slag.
In the present invention, mm represents millimeter, and min representative minute, wt% represents percentage by weight.
Accompanying drawing explanation
Fig. 1 is the flow chart of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the detailed description of the invention of the present invention is carried out more detailed
Explanation, so as to the advantage being more fully understood that the solution of the present invention and various aspects thereof.But,
Specific embodiments described below and embodiment are only descriptive purposes rather than to the present invention
Limit.
The present invention provides a kind of Combined Treatment copper ashes and the method for chromium slag, as it is shown in figure 1, include as follows
Step:
A, by copper ashes, have calcium chromium slag, reduction coal, fluorite and bentonite at less than 150 DEG C be dried,
Be finely ground to again below 200 mesh mixing obtain compound, described 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 being carried out pressure ball, it is thus achieved that pelletizing, the granularity 20～50mm of pelletizing will be, and will
Made pelletizing is dried at being less than 150 DEG C and obtains dry bulb group；
C, gained dry bulb group and quick lime are melted at electric furnace, described dry bulb group and the matter of quick lime
Amount ratio=100:5～20, refine 20～40min after melting down, it is thus achieved that ferrosilicon and removing toxic substances slag.
As preferred scheme, in described copper ashes, the percentage by weight of Fe is 35～50wt%, SiO2's
Percentage by weight >=30wt%.
As preferred scheme, there is the percentage by weight >=25wt% of CaO in calcium chromium slag.
As preferred scheme, the percentage by weight >=80wt% of C in described reduction coal, the weight hundred of S
Proportion by subtraction≤0.8wt%.
As preferred scheme, CaF in described fluorite2Percentage by weight >=80wt%.
As preferred scheme, the percentage by weight >=85wt% of CaO in described quick lime.
Concrete, the granularity of described 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, bentonite and quick lime are as raw material, it is thus achieved that ferrosilicon and removing toxic substances slag；By Cr in chromium slag6+Thoroughly
Removing toxic substances, it is achieved that copper ashes and the comprehensive renewable resources having calcium chromium slag.
Embodiment
Embodiment 1
Step one, by 100 parts of copper ashes (Fe:41.2%, SiO2: 31.5%), 32 parts have calcium chromium slag
(CaO:25.5%), 22 parts of reduction coal (C:80.8%, S:0.6%), 3 parts of fluorite (CaF2:
82.3%), 5 parts of bentonite are dried at 110 DEG C, then are finely ground to below 200 mesh and to mix acquisition mixed
Close material.
Step 2, by step one gained compound pressure ball, pellet size is 50mm, and by made pelletizing
It is dried at 105 DEG C and obtains dry bulb group.
Step 3, by step 3 gained dry bulb group and dry bulb quality 5% quick lime (CaO:88.2%),
Quick lime granularity 50mm, puts into electric furnace and melts, refine 40min after melting down, it is thus achieved that ferrosilicon and
Removing toxic substances slag.
Embodiment 2
Step one, by 100 parts of copper ashes (Fe:42.3%, SiO2: 32.2%), 35 parts have calcium chromium slag
(CaO:28.5%), 25 parts of reduction coal (C:85.8%, S:0.5%), 8 parts of fluorite (CaF2:
83.3%), 3 parts of bentonite are dried at 110 DEG C, then are finely ground to below 200 mesh and to mix acquisition mixed
Close material.
Step 2, by step one gained compound pressure ball, pellet size is 20mm, and by made pelletizing
It is dried at 105 DEG C and obtains dry bulb group.
Step 3, by step 3 gained dry bulb group and dry bulb quality 15% quick lime (CaO:
82.2%), quick lime granularity 40mm, put into electric furnace and melt, refine 20min after melting down, obtains
Obtain ferrosilicon and removing toxic substances slag.
Embodiment 3
Step one, by 100 parts of copper ashes (Fe:43.5%, SiO2: 34.5%), 50 parts have calcium chromium slag
(CaO:27.6%), 35 parts of reduction coal (C:82.5%, S:0. upper 5%), 5 parts of fluorite (CaF2:
83.2%), 8 parts of bentonite are dried at 110 DEG C, then are finely ground to below 200 mesh and to mix acquisition mixed
Close material.
Step 2, by step one gained compound pressure ball, pellet size is 2mm, and by made pelletizing
It is dried at 105 DEG C and obtains dry bulb group.
Step 3, by step 3 gained dry bulb group and dry bulb quality 20% quick lime (CaO:
85.2%), quick lime granularity 20mm, put into electric furnace and melt, refine 30min after melting down, obtains
Obtain ferrosilicon and removing toxic substances slag.
It should be noted that each embodiment above by reference to described by accompanying drawing is only in order to illustrate the present invention
And unrestricted the scope of the present invention, it will be understood by those within the art that, without departing from this
The amendment on the premise of bright spirit and scope carried out the present invention or equivalent, all should contain
Within the scope of the present invention.Additionally, unless the context outside indication, the word bag occurred in the singular
Including plural form, vice versa.It addition, unless stated otherwise, then any embodiment whole or
A part can use in conjunction with all or part of of any other embodiments.
Claims (10)
1. Combined Treatment copper ashes and a method for chromium slag, comprise the steps:
A, by copper ashes, have calcium chromium slag, reduction coal, fluorite and bentonite at less than 150 DEG C be dried,
Be finely ground to again below 200 mesh mixing obtain compound, described 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 carried out pressure ball, it is thus achieved that pelletizing, and made pelletizing is dried acquisition dry bulb group；
C, gained dry bulb group and quick lime are melted at electric furnace, described dry bulb group and the matter of quick lime
Amount ratio=100:5～20, refine after melting down, it is thus achieved that ferrosilicon and removing toxic substances slag.
Method the most according to claim 1, it is characterised in that the weight of Fe in described copper ashes
Percentage ratio is 35～50wt%, SiO2Percentage by weight >=30wt%.
Method the most according to claim 1, it is characterised in that described in have CaO in calcium chromium slag
Percentage by weight >=25wt%.
Method the most according to claim 1, it is characterised in that the weight of C in described reduction coal
Percentage by weight≤the 0.8wt% of percentage ratio >=80wt%, S.
Method the most according to claim 1, it is characterised in that CaF in described fluorite2Weight
Amount percentage ratio >=80wt%.
Method the most according to claim 1, it is characterised in that the weight of CaO in described quick lime
Amount percentage ratio >=85wt%.
Method the most according to claim 1, it is characterised in that the granularity of pelletizing in step B
20～50mm.
Method the most according to claim 1, it is characterised in that in described step B, pelletizing is low
It is dried at 150 DEG C.
Method the most according to claim 1, it is characterised in that refine duration in described step C
It is 20～40min.
Method the most according to claim 1, it is characterised in that the granularity of described quick lime is
20～50mm.
Priority Applications (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 |
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105861833A true CN105861833A (en) | 2016-08-17 |
| CN105861833B CN105861833B (en) | 2017-12-15 |
Family
ID=56676358
Family Applications (1)
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| CN201610405355.8A Active CN105861833B (en) | 2016-06-08 | 2016-06-08 | A kind of method of Combined Treatment copper ashes and chromium slag |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109371233A (en) * | 2018-11-30 | 2019-02-22 | 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109371233A (en) * | 2018-11-30 | 2019-02-22 | 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 |
| 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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| Publication number | Publication date |
|---|---|
| CN105861833B (en) | 2017-12-15 |
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