CN103725886A - Method for preparing multicomponent alloy by using copper, nickel, chromium, zinc and ferrum in silt - Google Patents
Method for preparing multicomponent alloy by using copper, nickel, chromium, zinc and ferrum in silt Download PDFInfo
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- CN103725886A CN103725886A CN201310639293.3A CN201310639293A CN103725886A CN 103725886 A CN103725886 A CN 103725886A CN 201310639293 A CN201310639293 A CN 201310639293A CN 103725886 A CN103725886 A CN 103725886A
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- multicomponent alloy
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- 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
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Abstract
The invention discloses a method for preparing a multicomponent alloy by using copper, nickel, chromium, zinc and iron in silt. The method comprises the following specific steps: using sulfuric acid to leach heavy metal ions in the silt, and filtering to obtain nontoxic industrial pickling or electroplating sludge and a leachate; firstly adding sodium bisulfite into the leachate, then using sodium hydroxide to adjust the pH value of the leachate to be 6.9-7.1 to form hydroxide precipitations of copper, nickel, chromium, zinc and ferrum, filtering, drying, and then measuring weight percentage of copper, nickel, chromium, zinc and ferrum; adding underweight components according to the weight percentage of each kind of metal in the multicomponent alloy to be prepared, and then performing high-temperature scorching at a reducing atmosphere to obtain the multicomponent alloy. According to the method provided by the invention, the heavy metal ions extracted from the silt do not need a tedious separation process, but can be directly used to prepare the multicomponent alloy, so that the cost is low, and the method is novel.
Description
Technical field
The invention provides a kind of method of utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy, belong to metallurgy and field of Environment Protection, particularly a kind of method to Heavy Metals in Sludge ion harmless resource utilization recycling and tail washings cycling and reutilization.
Background technology
In Industrial processes, thereby often produce the spent pickle liquor or the electroplate liquid that contain in a large number the heavy metals such as copper nickel chromium triangle zinc-iron.At present, most industrial factories all adopt lime neutralization precipitation method to process spent pickle liquor.This method makes water outlet reach emission standard, but causes secondary pollution, produces a large amount of poisonous and hazardous industrial acid-washed or electroplating sludges.
In industrial acid-washed or electroplating sludge, contain the hazardous and noxious substances such as plurality of heavy metal copper nickel chromium triangle zinc-iron.Reclaim the heavy metal resources such as the copper nickel chromium triangle zinc-iron in industrial acid-washed or electroplating sludge and not only fundamentally solve heavy metal pollution problem, and make the valuable metals resources such as copper nickel chromium triangle zinc-iron obtain regeneration, in contaminated solution problem, obtain obvious economic benefit.
Summary of the invention
The problem that the object of the invention is to exist for above-mentioned prior art provides a kind of more simple, economic, safe and effective method of utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy.
For achieving the above object, the invention provides following technical scheme:
Utilize copper nickel chromium triangle zinc-iron in mud to prepare a method for multicomponent alloy, concrete steps are: heavy metal ion is wherein leached with sulfuric acid, obtain nontoxic industrial acid-washed or electroplating sludge and leach liquor after filtration; First in leach liquor, add sodium bisulfite, then adopt sodium hydroxide to regulate pH of leaching solution to 6.9-7.1, form the precipitation of hydroxide of copper nickel chromium triangle zinc-iron, after filtering, being dried, measure the weight percent of copper nickel chromium triangle zinc-iron; According to the weight percent of each metal in the multicomponent alloy of wanting to prepare, add underweight part again, then under reducing atmosphere, high temperature sintering obtains multicomponent alloy.
As further scheme, lime is added to the filtrate of filtering after precipitation of hydroxide, form calcium sulfate precipitation, obtains sodium hydroxide solution after filtration, recycling.
As further scheme, adopt sodium hydroxide to regulate pH of leaching solution to 7.0.
As further scheme, the gram-equivalent number that adds sulfuric acid in leaching process of the present invention is 1-2 times of copper nickel chromium triangle zinc-iron ion gram-equivalent number summation, extraction temperature 20-80 ℃, extraction time 1-5h.
As further scheme, it is Cr that the present invention adds the gram-equivalent number of sodium bisulfite
6+gram-equivalent number 1-2 doubly, the gram-equivalent number that adds sodium hydroxide be copper nickel chromium triangle zinc-iron ion gram-equivalent number summation 1-2 doubly, the gram-equivalent number that adds lime is SO
4-the 2-3 of gram equivalent doubly.
Compared with prior art, the invention has the advantages that: the heavy metal ion that (1) the present invention extracts from mud is without loaded down with trivial details separating technology, but be directly used for preparing multicomponent alloy, cost is low, method novelty; (2) when green is extracted the copper nickel chromium triangle zinc-iron ion in industrial acid-washed or electroplating sludge, and by SO
4-one carry out innoxious solidification treatment; (3) adopt the precipitator method to reclaim the heavy metals such as copper nickel chromium triangle zinc-iron, operation is simply easy to control, with low cost; (4) tail washings cycling and reutilization after treatment.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of method of utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy, concrete steps are as follows: heavy metal ion is wherein leached with sulfuric acid, obtain nontoxic industrial acid-washed or electroplating sludge and leach liquor after filtration; First in leach liquor, add sodium bisulfite, then adopt sodium hydroxide to regulate pH of leaching solution to 6.9, form the precipitation of hydroxide of copper nickel chromium triangle zinc-iron, after filtering, being dried, measure the weight percent of copper nickel chromium triangle zinc-iron; According to the weight percent of each metal in the multicomponent alloy of wanting to prepare, add underweight part again, then under reducing atmosphere, high temperature sintering obtains multicomponent alloy.Lime is added to the filtrate of filtering after precipitation of hydroxide, form calcium sulfate precipitation, obtains sodium hydroxide solution after filtration, recycling.
The gram-equivalent number that adds sulfuric acid in leaching process of the present invention is 1 times of copper nickel chromium triangle zinc-iron ion gram-equivalent number summation, 20 ℃ of extraction temperatures, extraction time 1h.It is Cr that the present invention adds the gram-equivalent number of sodium bisulfite
6+1 times of gram-equivalent number, the gram-equivalent number that adds sodium hydroxide is 1 times of copper nickel chromium triangle zinc-iron ion gram-equivalent number summation, the gram-equivalent number that adds lime is SO
4-gram equivalent 2 times.
Embodiment 2
In the embodiment of the present invention, a kind of method of utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy, concrete steps are: heavy metal ion is wherein leached with sulfuric acid, obtain nontoxic industrial acid-washed or electroplating sludge and leach liquor after filtration; First in leach liquor, add sodium bisulfite, then adopt sodium hydroxide to regulate pH of leaching solution to 7, form the precipitation of hydroxide of copper nickel chromium triangle zinc-iron, after filtering, being dried, measure the weight percent of copper nickel chromium triangle zinc-iron; According to the weight percent of each metal in the multicomponent alloy of wanting to prepare, add underweight part again, then under reducing atmosphere, high temperature sintering obtains multicomponent alloy.Lime is added to the filtrate of filtering after precipitation of hydroxide, form calcium sulfate precipitation, obtains sodium hydroxide solution after filtration, recycling.
The gram-equivalent number that adds sulfuric acid in leaching process of the present invention is 1.5 times of copper nickel chromium triangle zinc-iron ion gram-equivalent number summation, 50 ℃ of extraction temperatures, extraction time 3h.It is Cr that the present invention adds the gram-equivalent number of sodium bisulfite
6+1.5 times of gram-equivalent number, the gram-equivalent number that adds sodium hydroxide is 1.5 times of copper nickel chromium triangle zinc-iron ion gram-equivalent number summation, the gram-equivalent number that adds lime is SO
4-gram equivalent 2.5 times.
Embodiment 3
In the embodiment of the present invention, a kind of method of utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy, concrete steps are: heavy metal ion is wherein leached with sulfuric acid, obtain nontoxic industrial acid-washed or electroplating sludge and leach liquor after filtration; First in leach liquor, add sodium bisulfite, then adopt sodium hydroxide to regulate pH of leaching solution to 7.1, form the precipitation of hydroxide of copper nickel chromium triangle zinc-iron, after filtering, being dried, measure the weight percent of copper nickel chromium triangle zinc-iron; According to the weight percent of each metal in the multicomponent alloy of wanting to prepare, add underweight part again, then under reducing atmosphere, high temperature sintering obtains multicomponent alloy.Lime is added to the filtrate of filtering after precipitation of hydroxide, form calcium sulfate precipitation, obtains sodium hydroxide solution after filtration, recycling.
The gram-equivalent number that adds sulfuric acid in leaching process of the present invention is 2 times of copper nickel chromium triangle zinc-iron ion gram-equivalent number summation, 80 ℃ of extraction temperatures, extraction time 5h.It is Cr that the present invention adds the gram-equivalent number of sodium bisulfite
6+2 times of gram-equivalent number, the gram-equivalent number that adds sodium hydroxide is 2 times of copper nickel chromium triangle zinc-iron ion gram-equivalent number summation, the gram-equivalent number that adds lime is SO
4-gram equivalent 3 times.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned example embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other specific form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in the present invention.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should make specification sheets as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (7)
1. utilize copper nickel chromium triangle zinc-iron in mud to prepare a method for multicomponent alloy, it is characterized in that, concrete steps are: heavy metal ion is wherein leached with sulfuric acid, obtain nontoxic industrial acid-washed or electroplating sludge and leach liquor after filtration; First in leach liquor, add sodium bisulfite, then adopt sodium hydroxide to regulate pH of leaching solution to 6.9-7.1, form the precipitation of hydroxide of copper nickel chromium triangle zinc-iron, after filtering, being dried, measure the weight percent of copper nickel chromium triangle zinc-iron; According to the weight percent of each metal in the multicomponent alloy of wanting to prepare, add underweight part again, then under reducing atmosphere, high temperature sintering obtains multicomponent alloy.
2. the method for utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy according to claim 1, is characterized in that, lime is added to the filtrate of filtering after precipitation of hydroxide, and form calcium sulfate precipitation, obtains sodium hydroxide solution after filtration, recycling.
3. the method for utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy according to claim 1, is characterized in that, adopts sodium hydroxide to regulate pH of leaching solution to 7.0.
4. the method for utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy according to claim 1, it is characterized in that, the gram-equivalent number that adds sulfuric acid in leaching process is 1-2 times of copper nickel chromium triangle zinc-iron ion gram-equivalent number summation, extraction temperature 20-80 ℃, extraction time 1-5h.
5. the method for utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy according to claim 1, is characterized in that, the gram-equivalent number that adds sodium bisulfite is Cr
6+gram-equivalent number 1-2 doubly.
6. the method for utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy according to claim 1, is characterized in that, the gram-equivalent number that adds sodium hydroxide be copper nickel chromium triangle zinc-iron ion gram-equivalent number summation 1-2 doubly.
7. the method for utilizing copper nickel chromium triangle zinc-iron in mud to prepare multicomponent alloy according to claim 1, is characterized in that, the gram-equivalent number that adds lime is SO
4-the 2-3 of gram equivalent doubly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310639293.3A CN103725886A (en) | 2013-12-04 | 2013-12-04 | Method for preparing multicomponent alloy by using copper, nickel, chromium, zinc and ferrum in silt |
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| CN201310639293.3A CN103725886A (en) | 2013-12-04 | 2013-12-04 | Method for preparing multicomponent alloy by using copper, nickel, chromium, zinc and ferrum in silt |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101096053A (en) * | 2006-06-29 | 2008-01-02 | 王世荣 | Preparation method of ferro-cobalt ultra-fine powder |
| CN101618929A (en) * | 2008-11-04 | 2010-01-06 | 刘文治 | Method of treating alkaline sludge containing heavy metal as resources |
| CN102690956A (en) * | 2012-06-18 | 2012-09-26 | 北京科技大学 | Method for green extraction of chromium and nickel from stainless steel pickled sludge |
| CN102758091A (en) * | 2012-07-18 | 2012-10-31 | 中国瑞林工程技术有限公司 | Treatment method for electroplating sludge |
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- 2013-12-04 CN CN201310639293.3A patent/CN103725886A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101096053A (en) * | 2006-06-29 | 2008-01-02 | 王世荣 | Preparation method of ferro-cobalt ultra-fine powder |
| CN101618929A (en) * | 2008-11-04 | 2010-01-06 | 刘文治 | Method of treating alkaline sludge containing heavy metal as resources |
| CN102690956A (en) * | 2012-06-18 | 2012-09-26 | 北京科技大学 | Method for green extraction of chromium and nickel from stainless steel pickled sludge |
| CN102758091A (en) * | 2012-07-18 | 2012-10-31 | 中国瑞林工程技术有限公司 | Treatment method for electroplating sludge |
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Application publication date: 20140416 |