CN102206024A - Method for quickly dealkalizing red mud by using phosphogypsum - Google Patents
Method for quickly dealkalizing red mud by using phosphogypsum Download PDFInfo
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- CN102206024A CN102206024A CN 201110058514 CN201110058514A CN102206024A CN 102206024 A CN102206024 A CN 102206024A CN 201110058514 CN201110058514 CN 201110058514 CN 201110058514 A CN201110058514 A CN 201110058514A CN 102206024 A CN102206024 A CN 102206024A
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- red mud
- phosphogypsum
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Abstract
The invention discloses a method for quickly dealkalizing red mud by using phosphogypsum and belongs to a method for dealkalizing red mud. The invention aims to provide a method for dealkalizing red mud, which is simple in operation, low in cost and allows treated red mud to be used comprehensively. The method comprises: crushing the phosphogypsum and scattering the phosphogypsum by hammering; uniformly mixing the phosphogypsum with the red mud and water according to a weight ratio of (2-3):(4-6):(80-150); shaking reciprocally or stirring for 1.5 to 2 hours; and standing to pour out supernate and drying the sediment. In the invention, the environment pollution problem caused by two kinds of high-emission industrial waste is solved successfully, and the red mud dealkalized by the method can meet the requirements of plants for growth, so the comprehensive use of resources is realized to a maximum degree; and the method is ideal for quickly dealkalizing red mud at present.
Description
Technical field: the present invention relates to a kind of method that red mud is handled, relate in particular to a kind of method of red mud being carried out quick dealkalize.
Background technology: red mud is a large amount of refuses that discharge in the aluminum oxide production process, presents redness because of containing ferric oxide, so claim " red mud "; Its pH value and salt are all very high, can impact environment.At present, mainly adopt methods such as lime method, alkali stripping method, acid leaching process that red mud is carried out dealkalize and handle, but these methods not only technology is loaded down with trivial details, complicated operation, and expensive big, be unfavorable for that large-scale promotion uses.Phosphogypsum is the byproduct of phosphoric acid industry, is acid; Except that main component is calcium sulfate, also contain small amounts of phosphoric acid, silicon, magnesium, iron, aluminium, fluorine and organic matter etc., water-soluble fluorine wherein and free acid are the main harm things.
China is the discharging big country of red mud and phosphogypsum, year the discharging red mud up to 1,000 ten thousand tons about; Owing to also do not have a kind of effective treatment process at present, a large amount of red muds can only air storage, not only needs to take a large amount of soils, expends a large amount of funds, but also can cause environmental disruption; Therefore how can be fast, low-costly red mud carried out the dealkalize processing become a present urgency difficult problem to be solved.
Summary of the invention: the defective that exists when handling above-mentioned waste at prior art, the present invention aims to provide a kind of method of red mud being carried out quick dealkalize with phosphogypsum, and that this method has is simple to operate, cost is low, the red mud after the dealkalize can be made characteristics such as comprehensive utilization.
To achieve these goals, the present invention by the following technical solutions: with phosphogypsum chopping, smash diffusing, then with itself and red mud and water by 2～3: 4～6: 80～150 weight ratio mixes, reciprocating vibration or stirred 1.5～2 hours; Leave standstill, pour out supernatant liquor, throw out dries.
Compared with the prior art, the present invention is owing to adopted technique scheme, with the highly acid phosphogypsum alkaline red mud that neutralizes, not only successfully solved two kinds of problems that the maximum discharge trade waste pollutes environment, and the red mud of handling through dealkalize of the present invention also is used for serike; Simultaneously, alkali lye of separating and the also recyclable utilization of other useful component have realized the utilization of resources to greatest extent.
Embodiment: the invention will be further described below in conjunction with specific embodiment:
1,2 kilogram of pulverizing of embodiment, smash diffusing phosphogypsum and mix for 4 kilograms, add 80 kilograms of abundant mixings of water, the intermittent stirring 1.5 hours with red mud; Leave standstill, pour out supernatant liquor, throw out dries and gets final product.
2,3 kilograms of pulverizing of embodiment, smash the phosphogypsum that looses and mix for 6 kilograms, add 150 kilograms of abundant mixings of water, intermittent stirring 1.5 hours with red mud; Leave standstill, pour out supernatant liquor, throw out dries and gets final product.
3,2 kilograms of pulverizing of embodiment, smash the phosphogypsum that looses and mix for 6 kilograms, add 130 kilograms of abundant mixings of water, intermittent stirring 2 hours with red mud; Leave standstill, pour out supernatant liquor, throw out dries and gets final product.
4,3 kilograms of pulverizing of embodiment, smash the phosphogypsum that looses and mix for 4 kilograms, add the abundant mixing of water double centner, intermittent stirring 2 hours with red mud; Leave standstill, pour out supernatant liquor, throw out dries and gets final product.
5,2.5 kilograms of pulverizing of embodiment, smash the phosphogypsum that looses and mix for 5 kilograms, add 115 kilograms of abundant mixings of water, intermittent stirring 2 hours with red mud; Leave standstill, pour out supernatant liquor, throw out dries and gets final product.
Measure handling the red mud that obtains through the various embodiments described above, its pH is 7～9, and specific conductivity is below 1ms; This shows that dealkalize effect of the present invention is obvious.
Claims (1)
- One kind with phosphogypsum to the method that red mud carries out quick dealkalize, it is characterized in that: phosphogypsum is pulverized, is smash diffusing, then with itself and red mud and water by 2～3: 4～6: 80～150 weight ratio mixes, reciprocating vibration or stirred 1.5～2 hours; Leave standstill, pour out supernatant liquor, throw out dries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110058514 CN102206024A (en) | 2011-03-11 | 2011-03-11 | Method for quickly dealkalizing red mud by using phosphogypsum |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110058514 CN102206024A (en) | 2011-03-11 | 2011-03-11 | Method for quickly dealkalizing red mud by using phosphogypsum |
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| CN102206024A true CN102206024A (en) | 2011-10-05 |
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| CN 201110058514 Pending CN102206024A (en) | 2011-03-11 | 2011-03-11 | Method for quickly dealkalizing red mud by using phosphogypsum |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102577786A (en) * | 2012-01-12 | 2012-07-18 | 瓮福（集团）有限责任公司 | Method for using industrial and agricultural waste residue to improve phosphogypsum for vegetation recovery |
| CN104556604A (en) * | 2015-02-04 | 2015-04-29 | 河南理工大学 | Dealkalizing device for red mud |
| CN105665425A (en) * | 2016-04-11 | 2016-06-15 | 贵州晨辉达矿业工程设计有限公司 | Harmless disposing method for red mud and ardealite |
| CN108975364A (en) * | 2018-07-30 | 2018-12-11 | 中南大学 | A kind of method that the processing of Bayer process red mud acid removes alkali collection sodium |
| CN110272078A (en) * | 2019-05-31 | 2019-09-24 | 泉州师范学院 | The preparation method that material filling type is percolated dam is coated convenient for filling the pollution treatment floc sedimentation of volume reduction |
| CN110272146A (en) * | 2019-05-31 | 2019-09-24 | 泉州师范学院 | The method that landfill leachate is administered into the high ferro-aluminum sludge of water factory, industrial waste coupling |
| CN111330943A (en) * | 2020-03-02 | 2020-06-26 | 中南大学 | Method for dealkalizing red mud and ecologically soil-transforming |
| CN113262422A (en) * | 2021-06-10 | 2021-08-17 | 西南交通大学 | Combined dealkalizing agent and method for combined dealkalized red mud |
| CN113929418A (en) * | 2021-10-25 | 2022-01-14 | 杭州瑞鼎建材有限公司 | Aerated concrete and preparation method thereof |
| CN115196843A (en) * | 2022-05-20 | 2022-10-18 | 陕西科技大学 | Method for dealkalizing and stabilizing red mud |
| CN117356393A (en) * | 2023-11-14 | 2024-01-09 | 湖南仁义环保建材科技有限公司 | Plant growth nutrient soil produced by utilizing industrial waste residues and production method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264480A (en) * | 2008-04-25 | 2008-09-17 | 贵州平坝宏大铝化工有限公司 | Harm reduction processing method for phosphogypsum and red mud |
-
2011
- 2011-03-11 CN CN 201110058514 patent/CN102206024A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264480A (en) * | 2008-04-25 | 2008-09-17 | 贵州平坝宏大铝化工有限公司 | Harm reduction processing method for phosphogypsum and red mud |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102577786A (en) * | 2012-01-12 | 2012-07-18 | 瓮福（集团）有限责任公司 | Method for using industrial and agricultural waste residue to improve phosphogypsum for vegetation recovery |
| CN104556604A (en) * | 2015-02-04 | 2015-04-29 | 河南理工大学 | Dealkalizing device for red mud |
| CN105665425A (en) * | 2016-04-11 | 2016-06-15 | 贵州晨辉达矿业工程设计有限公司 | Harmless disposing method for red mud and ardealite |
| CN108975364A (en) * | 2018-07-30 | 2018-12-11 | 中南大学 | A kind of method that the processing of Bayer process red mud acid removes alkali collection sodium |
| CN110272078A (en) * | 2019-05-31 | 2019-09-24 | 泉州师范学院 | The preparation method that material filling type is percolated dam is coated convenient for filling the pollution treatment floc sedimentation of volume reduction |
| CN110272146A (en) * | 2019-05-31 | 2019-09-24 | 泉州师范学院 | The method that landfill leachate is administered into the high ferro-aluminum sludge of water factory, industrial waste coupling |
| CN111330943A (en) * | 2020-03-02 | 2020-06-26 | 中南大学 | Method for dealkalizing red mud and ecologically soil-transforming |
| CN111330943B (en) * | 2020-03-02 | 2022-04-15 | 中南大学 | Method for dealkalizing red mud and ecologically soil-transforming |
| CN113262422A (en) * | 2021-06-10 | 2021-08-17 | 西南交通大学 | Combined dealkalizing agent and method for combined dealkalized red mud |
| CN113929418A (en) * | 2021-10-25 | 2022-01-14 | 杭州瑞鼎建材有限公司 | Aerated concrete and preparation method thereof |
| CN113929418B (en) * | 2021-10-25 | 2022-06-17 | 杭州瑞鼎建材有限公司 | Aerated concrete and preparation method thereof |
| CN115196843A (en) * | 2022-05-20 | 2022-10-18 | 陕西科技大学 | Method for dealkalizing and stabilizing red mud |
| CN115196843B (en) * | 2022-05-20 | 2023-12-22 | 陕西科技大学 | Red mud dealkalization stabilization method |
| CN117356393A (en) * | 2023-11-14 | 2024-01-09 | 湖南仁义环保建材科技有限公司 | Plant growth nutrient soil produced by utilizing industrial waste residues and production method thereof |
| CN117356393B (en) * | 2023-11-14 | 2024-04-30 | 湖南仁义环保建材科技有限公司 | Plant growth nutrient soil produced by utilizing industrial waste residues and production method thereof |
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Application publication date: 20111005 |