CN103359775B - Method for removing iron from zinc-containing waste lixivium - Google Patents
Method for removing iron from zinc-containing waste lixivium Download PDFInfo
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- CN103359775B CN103359775B CN201310297484.6A CN201310297484A CN103359775B CN 103359775 B CN103359775 B CN 103359775B CN 201310297484 A CN201310297484 A CN 201310297484A CN 103359775 B CN103359775 B CN 103359775B
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Abstract
The invention discloses a method for removing iron from zinc-containing waste lixivium, which belongs to the technical field of chemical engineering. The method comprises the following steps of: (1), punching the zinc-containing waste lixivium into an iron-removing container; (2), analyzing iron-manganese iron content in the solution and adding into the zinc-containing waste lixivium for reacting according to a theoretical potassium permanganate amount; (3), adjusting a pH value and filtering to obtain filtrate; (4), adding the potassium permanganate into the solution needing removing iron for reacting until the filtrate is a bit bright red or dropwise added with a 2% potassium permanganate solution to become bright red if the filtrate is yellow; (5), adding lime water into the iron-removing container if the filtrate is detected to reach bright red, and adjusting the pH value of the solution; and (6), taking and filtering the solution obtained in the step (5) by a filter press to obtain the product. According to the method for removing iron from zinc-containing waste lixivium disclosed by the invention, a heating-up process of the zinc-containing waste lixivium is cancelled, so that the iron in the iron-containing zinc sulfate solution is removed by the potassium permanganate under the condition of 80 DEG C or lower, and therefore, the iron is removed to be less than 10ppm and the manganese is lower than 20ppm, and the liquid and solid after removing the iron can be separated. Meanwhile, the iron-removing slag can be dissolved in acid, so that the iron and zinc in the slag can be recycled by utilizing a wet process.
Description
Technical field
The invention belongs to chemical technology field, be specifically related to a kind of method containing the deironing of Zn scrap returns leachate.
Background technology
Be obtain with containing Zn scrap returns and sulfuric acid reaction containing Zn scrap returns leachate, it forms primarily of zinc sulfate and ferrous iron and bivalent manganese.Solution must be heated to iron dross removing in more than 80 DEG C guarantee solution and well be separated with solution of zinc sulfate by traditional method containing the deironing of Zn scrap returns leachate.Because the method must be given containing the heating of Zn scrap returns leachate with steam, add energy consumption.
Summary of the invention
For prior art Problems existing, the object of the invention is to design the technical scheme that a kind of method containing the deironing of Zn scrap returns leachate is provided.
A kind of described method containing the deironing of Zn scrap returns leachate, should contain Zn-ef ficiency 100 ~ 130g/L, ferro element 10 ~ 3500ppm and manganese element 200 ~ 800ppm containing Zn scrap returns leachate, and it is characterized in that comprising following processing step:
1) will squeeze in deironing container containing Zn scrap returns leachate at temperature 50 ~ 70 DEG C;
2) ferromanganese ion content in analytical solution, calculates theory and needs potassium permanganate amount, to realize abundant reaction, and adds containing in Zn scrap returns leachate by theoretical potassium permanganate amount, reacts 20 ~ 40 minutes;
3) step 2 is got) reactant liquor that obtains adds limewash, adjust pH to 3 ~ 4, and filter and obtain filtrate;
4) if filtrate displaing yellow, then reacting except adding potassium permanganate in ferrous solution, then repeat step 2), 3) and 4) operation until filtrate shows slightly cerise or dropping 2% liquor potassic permanganate shows cerise;
5) in deironing container, add limewash after the filtrate inspection obtained in step 4) reaches cerise, regulate solution ph to be 3 ~ 4;
6) get the solution Filter Press that step 5) obtains, namely obtain product, in this product, iron content is less than 10ppm, and manganese element content is less than 20ppm.
A kind of described method containing the deironing of Zn scrap returns leachate, is characterized in that to squeeze in deironing container containing Zn scrap returns leachate at temperature 55 ~ 65 DEG C in described step 1).
A kind of described method containing the deironing of Zn scrap returns leachate, is characterized in that described step 2) in the reaction time be 25 ~ 35 minutes.
A kind of described method containing the deironing of Zn scrap returns leachate, is characterized in that in described step 6), Filter Press speed is 200 ~ 400L/m
2.h.
A kind of above-mentioned method containing the deironing of Zn scrap returns leachate compared with prior art, eliminate containing Zn scrap returns leachate temperature-rise period, make iron content solution of zinc sulfate use potassium permanganate deironing under lower than 80 DEG C of conditions, deironing can be reached and be less than 10ppm, manganese is lower than 20ppm, and after deironing, liquid-solid energy is separated.Iron dross removing can be dissolved in acid simultaneously, utilizes hydrometallurgic recovery wherein iron zinc.The present invention needs deironing manufacturing enterprise to provide Energy Saving Method for production process, adopts iron zinc-manganese in hydrometallurgic recovery iron dross removing, has important practical and is worth.
Detailed description of the invention
Following embodiment further illustrates the present invention.
Embodiment 1
A kind of containing Zn scrap returns leachate, Zn content 115g/L, iron content 2200ppm, Fe content 513 ppm.
Solution pump is added in 46m3 deironing container at temperature 63 DEG C; Add potassium permanganate 120kg according to ferromanganese ion content in solution, react 30 minutes, obtain a deironing slime water; Get a deironing slime water to add limewash and be adjusted to PH=3.5, filter to get filtrate; Filtrate, without pink, drips 2% liquor potassic permanganate, and solution is in yellow; Continue to 46m
3add 10 kg potassium permanganate in deironing container, react 20 minutes, obtain secondary deironing slime water; Get secondary deironing slime water to add limewash and be adjusted to pH=3.5, filter to get filtrate, filtrate shows slightly cerise; Add the limewash that mixes up in deironing container, adjust PH=3.8, stop adding limewash, with Filter Press, rate of filtration 222L/m2.h, iron content 2ppm in analysis and filter liquid, Fe content 18ppm.
Embodiment 2
A kind of containing Zn scrap returns leachate, Zn content 110g/L, iron content 3485ppm, Fe content 740ppm.
Solution pump is added in 46m3 deironing container at temperature 61 DEG C; Add potassium permanganate 150kg according to ferromanganese ion content in solution, react 30 minutes, obtain a deironing slime water; Get a deironing slime water to add limewash and be adjusted to PH=3.5, filter to get filtrate; Filtrate is without pink, and after dripping 2% liquor potassic permanganate, solution is in yellow; Continue to add 10kg potassium permanganate again in ferrous solution, react 30 minutes, obtain secondary deironing slime water; Get secondary deironing slime water and add limewash and be adjusted to PH=3.5, filter to get filtrate, drip 2% liquor potassic permanganate liquid and show cerise; Add the limewash that mixes up in deironing container, adjust PH=4, stop adding limewash, with Filter Press, rate of filtration 333L/m2.h, iron 8ppm in analysis and filter liquid, manganese 11ppm.
Embodiment 3
A kind of containing Zn scrap returns leachate, Zn content 118g/L, iron content 2460ppm, Fe content 421ppm.
Solution pump is added in 46m3 deironing container at temperature 58 DEG C; Add potassium permanganate 100kg according to ferromanganese ion content in solution, react 30 minutes, obtain a deironing slime water; Get a deironing slime water to add limewash and be adjusted to PH=3.5, filter to get filtrate; Filtrate drips 2% liquor potassic permanganate without pink, and solution is in yellow; Continue to add 12kg potassium permanganate in ferrous solution, react 20 minutes, obtain secondary deironing slime water; Get secondary deironing slime water and add limewash and be adjusted to pH=3.5, filter to get filtrate; Solution, without pink, drips 2% potassium permanganate in yellow; Continue to add 10kg potassium permanganate again in ferrous solution, react 20 minutes, obtain three deironing slime waters; Get three deironing slime waters and add limewash and be adjusted to PH=3.5, filter to obtain clear liquid, drip 2% liquor potassic permanganate liquid aobvious red, potassium permanganate is appropriate; Add the limewash that mixes up in deironing container, PH=3.5, stops adding limewash, with Filter Press, and rate of filtration 266L/m2.h, iron 5ppm in analysis and filter liquid, manganese 15ppm.
Embodiment 4
A kind of containing Zn scrap returns leachate, Zn content 120g/L, iron content 2288ppm, containing manganese 301ppm.
At temperature 65 DEG C, solution pump is added in 46m3 container; Add potassium permanganate 100kg according to ferromanganese ion content in solution, react 30 minutes, obtain a deironing slime water; Get a deironing slime water to add limewash and be adjusted to PH=3.5, filter to get filtrate; Drip 2% liquor potassic permanganate in filtrate, solution is in yellow; Continue to add 10kg potassium permanganate in ferrous solution, react 30 minutes, obtain secondary deironing slime water; Get secondary deironing slime water and add limewash and be adjusted to pH=3.5, filter to get filtrate; Filtrate, without pink, drips 2% potassium permanganate in yellow; Continue to add 10kg potassium permanganate again in ferrous solution, react 30 minutes, obtain three deironing slime waters; Get three deironing slime waters and add limewash and be adjusted to PH=3.5, filter to get filtrate; Filtrate added drop-wise 2% potassium permanganate, turn yellow again after solution takes on a red color look; In deironing container, add potassium permanganate 5kg, react 30 minutes, obtain four deironing slime waters; Get four deironing slime waters to add limewash and be adjusted to PH=3.5, filter to get filtrate, the micro-aobvious pink of liquid; Add the limewash that mixes up in deironing container, PH=4, stops adding limewash, with Filter Press, and rate of filtration 370L/m2.h, iron 3ppm in analysis and filter liquid, manganese 10 ppm.
Claims (1)
1., containing a method for Zn scrap returns leachate deironing, Zn-ef ficiency 100 ~ 130g/L, ferro element 10 ~ 3500ppm and manganese element 200 ~ 800ppm should be contained containing Zn scrap returns leachate, and it is characterized in that comprising following processing step:
1) will squeeze in deironing container containing Zn scrap returns leachate at temperature 55 ~ 65 DEG C;
2) ferromanganese ion content in analytical solution, calculates theory and needs potassium permanganate amount, to realize abundant reaction, and adds containing in Zn scrap returns leachate by theoretical potassium permanganate amount, reacts 25 ~ 35 minutes;
3) step 2 is got) reactant liquor that obtains adds limewash, adjust pH to 3 ~ 4, and filter and obtain filtrate;
4) if filtrate displaing yellow, then reacting except adding potassium permanganate in ferrous solution, then repeat step 2), 3) and 4) operation until filtrate shows slightly cerise or dropping 2% liquor potassic permanganate shows cerise;
5) in deironing container, add limewash after the filtrate inspection obtained in step 4) reaches cerise, regulate solution ph to be 3 ~ 4;
6) get the solution Filter Press that step 5) obtains, Filter Press speed is 200 ~ 400L/m
2.h, namely obtain product, in this product, iron content is less than 10ppm, and manganese element content is less than 20ppm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310297484.6A CN103359775B (en) | 2013-07-16 | 2013-07-16 | Method for removing iron from zinc-containing waste lixivium |
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| CN201310297484.6A CN103359775B (en) | 2013-07-16 | 2013-07-16 | Method for removing iron from zinc-containing waste lixivium |
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| CN103359775A CN103359775A (en) | 2013-10-23 |
| CN103359775B true CN103359775B (en) | 2015-01-14 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556205B (en) * | 2014-12-31 | 2016-03-16 | 袁福堂 | A kind of processing method utilizing the environmental protection of electrolytic zinc waste residue to produce feed level zinc sulfate |
| CN105753038B (en) * | 2016-01-26 | 2018-10-09 | 河北远大中正生物科技有限公司 | A kind of production technology of feed grade monohydrate zinc sulphate |
| CN108975385A (en) * | 2018-08-07 | 2018-12-11 | 浙江奔乐生物科技股份有限公司 | A kind of method of iron content zinc sulfate slurry iron-removing |
| IT202000002515A1 (en) * | 2020-02-10 | 2021-08-10 | Engitec Tech S P A | METHOD FOR RECOVERING METALLIC ZINC FROM METALLURGIC WASTE. |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243167A (en) * | 1998-07-28 | 2000-02-02 | 金云龙 | Method for extracting zinc from zinc-contained waste residue and apparatus thereof |
| CN102732731A (en) * | 2012-07-09 | 2012-10-17 | 湖南中燎科技有限公司 | Method for extracting valuable metals and refining zinc sulphate monohydrate from zinc-containing waste material |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243167A (en) * | 1998-07-28 | 2000-02-02 | 金云龙 | Method for extracting zinc from zinc-contained waste residue and apparatus thereof |
| CN102732731A (en) * | 2012-07-09 | 2012-10-17 | 湖南中燎科技有限公司 | Method for extracting valuable metals and refining zinc sulphate monohydrate from zinc-containing waste material |
Non-Patent Citations (1)
| Title |
|---|
| 热浸镀锌生产含锌废液综合治理研究;郭永廉等;《光学机械》;19901231(第6期);第67-68页第2节 * |
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Address after: Fuyang District of Hangzhou City, Zhejiang province 311412 Hong Jia Tang Town Patentee after: Zhejiang bio Polytron Technologies Inc Address before: Hangzhou City, Zhejiang province 311412 Fuyang City Economic Development Zone Fuyang District Chang Kou Hong Jia Tang Patentee before: Hangzhou Fuyang Xinxing Industrial Co., Ltd. |
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