CN102319633A - A kind of method for floating of phosphogypsum slag - Google Patents
A kind of method for floating of phosphogypsum slag Download PDFInfo
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- CN102319633A CN102319633A CN201110302398A CN201110302398A CN102319633A CN 102319633 A CN102319633 A CN 102319633A CN 201110302398 A CN201110302398 A CN 201110302398A CN 201110302398 A CN201110302398 A CN 201110302398A CN 102319633 A CN102319633 A CN 102319633A
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- phosphogypsum slag
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Abstract
The present invention is a kind of method for floating of phosphogypsum slag, it is characterized in that, its step is following: in phosphogypsum slag, add entry, control ore pulp mass concentration is carried out flotation in flotation device; Flotation is adopted and is roughly selected and 1-2 selected operation for 2-5 time; Adding inhibitor, collecting agent are roughly selected
IOperation is carried out roughly selecting operation 1-4 time again, and roughly selects operation at every turn and all add collecting agent; Merge roughly select froth pulp after, add inhibitor carry out 1-2 time selected; Selected foam is a flotation concentrate high-quality ardealite, and product returns as chats and roughly selects in the cleaner cell
IOperation; Said inhibitor is a waterglass, and collecting agent is that carbon number is the acetate or the hydrochloride of 8 ~ 18 alkyl fatty amine.The present invention does not need phosphogypsum slag is carried out any processing, only need add water and size mixing, and utilizes the solubility P in the ardealite
2O
5Impurity (residual phosphorus) adopts suitable floating agent, can reduce the impurity content of ardealite significantly, realizes the regeneration to phosphogypsum slag.
Description
Technical field
The present invention relates to a kind of from phosphogypsum slag the method for direct flotation calcium sulphate dihydrate.
Background technology
The solid slag that ardealite produces when being meant in phosphoric acid production with sulfuric acid treating phosphorite, its main component is a calcium sulphate dihydrate.In production process of phosphoric acid; The part rock phosphate in powder is undecomposed, ardealite washing and filtering process not exclusively and in the production process additive be the reason that contains plurality of impurities such as phosphorus, fluorine in the ardealite; Just these impurity effects the performance of ardealite; Make its production that can not directly apply to building materials of gypsum, restricted the use of ardealite.
Ardealite impurity divides two big types: insoluble impurities: like quartz, undecomposed apatite, insoluble P
2O
5, eutectic P
2O
5, fluoride and fluorine, aluminium, magnesium phosphate and sulfate; Soluble impurity: like water-soluble P
2O
5, fluoride that solubility is lower and sulfate.
A large amount of research has been carried out in domestic application to ardealite at present, has also obtained certain achievement, and ardealite has all obtained utilizing in industries such as building materials, agricultural, chemical industry again, but owing to calcium sulphate dihydrate (CaSO in the ardealite
42H
2O) content is low, and impurity content is high, causes ardealite effectively not utilize.The stacking of ardealite not only takies a large amount of soils, contaminated environment, and causes very big burden for production of phosphate fertilizer enterprise.
Flotation is the technology at gas-liquid-solid three phase boundary sorting mined material, and flotation is the high separation process of a kind of efficient.Recent two decades comes, and flotation also has development in other field, is applied in metallurgy, chemistry, papermaking, agricultural product and the food industry.Utilizing the method for flotation to handle phosphogypsum slag does not also appear in the newspapers.
Summary of the invention
Technical problem to be solved by this invention is the deficiency to prior art, and a kind of flotation method of purification of phosphogypsum slag is provided, and can effectively improve sulfate dihydrate calcium content in the ardealite through flotation.
Technical problem to be solved by this invention is to realize through following technical scheme.The present invention is a kind of method for floating of phosphogypsum slag, is characterized in, its step is following: in phosphogypsum slag, add entry, control ore pulp mass concentration is carried out flotation 15 ~ 30% in flotation device; Flotation is adopted and is roughly selected and 1-2 selected operation for 2-5 time; Add inhibitor 1.5 ~ 3.5kg/t phosphogypsum slag, collecting agent 100 ~ 300g/t phosphogypsum slag is roughly selected
IOperation is carried out roughly selecting operation 1-4 time again, and roughly selects operation at every turn and all add collecting agent 50 ~ 150g/t phosphogypsum slag; In the initial separatory cell is tailings; Merge roughly select froth pulp after, add inhibitor 0.1 ~ 1kg/t phosphogypsum slag carry out 1-2 time selected; Selected foam is a flotation concentrate high-quality ardealite, and product returns as chats and roughly selects in the cleaner cell
IOperation; Said inhibitor is a waterglass; Said collecting agent is that carbon number is the acetate or the hydrochloride of 8 ~ 18 alkyl fatty amine.
In the method for floating technical scheme of above-described phosphogypsum slag: roughing flotation and selected number of times can carry out suitable adjustment according to the character and the sulfate dihydrate calcium content of ardealite, select excellent employing to roughly select for 3 times and 1 selected operation.The flotation time of each operation is also adjusted according to actual conditions.When employing is roughly selected with 1 selected operation 3 times, described roughly selecting
IFlotation time is preferably 3 ~ 8 minutes, and the preferred time of flotation of roughly selecting for the 2nd time is 2 ~ 5 minutes, and the flotation time of roughly selecting for the 3rd time is preferably 2 ~ 5 minutes, and selected flotation time is preferably 4 ~ 10 minutes.
All contain residual phosphorus (the water-soluble P after the extraction in the phosphogypsum slag
2O
5), because in the process of sulfuric acid extraction phosphorus ore and ardealite washing, can not all reclaim especially water-soluble residual phosphorus by phosphorus wherein.Water-soluble residual phosphorus content is different and different with wet method system phosphoric acid process with handled rock phosphate in powder.In phosphogypsum slag, add water and size mixing, ore pulp is acid.The acidity of ore pulp is different because of the character and the amount of water of ardealite, and pH is generally 2 ~ 5.Add inhibitor waterglass at this acid medium; Actual is a kind of acidified sodium silicate (waterglass and mixtures of mineral acids); Acidified sodium silicate has stronger inhibition ability than waterglass, and impurity in the ardealite is had strong inhibitory action, behind the adding cationic amines collecting agent; Make the calcium sulphate dihydrate come-up, realize and the ardealite separate impurities.
Technology of the present invention is repeatedly roughly selected operation, and perhaps collecting agent adds several times, can improve concentrate sulfate dihydrate calcium content, reduces collector dosage.
Compared with prior art; Technology of the present invention is very simple, does not need phosphogypsum slag is carried out any processing, only need add water and size mixing; Utilize the soluble impurity (residual phosphorus) in the ardealite; Adopt suitable floating agent, obvious to the content effect that improves calcium sulphate dihydrate in the ardealite, can reduce the impurity content of ardealite significantly.Technology of the present invention can realize the regeneration to phosphogypsum slag, turns waste into wealth, and reduce the pollution to environment, and production cost is low, small investment, operate very simple, easy large-scale industrial production.
Description of drawings
Fig. 1 adopts three thick one smart chats to return the process chart of roughly selecting of the present invention.
The specific embodiment
Embodiment 1, a kind of method for floating of phosphogypsum slag, and its step is following: in phosphogypsum slag, add entry, control ore pulp mass concentration is carried out flotation 15% in flotation device; Flotation is adopted and is roughly selected and 1 selected operation for 2 times; Add inhibitor 1.5kg/t phosphogypsum slag, collecting agent 100g/t phosphogypsum slag is roughly selected
IOperation is carried out roughly selecting operation 1 time again, and roughly selects operation at every turn and all add collecting agent 50g/t phosphogypsum slag; In the initial separatory cell is tailings; Merge roughly select froth pulp after, add inhibitor 0.1kg/t phosphogypsum slag carry out 1 time selected; Selected foam is a flotation concentrate high-quality ardealite, and product returns as chats and roughly selects in the cleaner cell
IOperation; Said inhibitor is a waterglass; Said collecting agent is that carbon number is the acetate or the hydrochloride of 8 ~ 18 alkyl fatty amine.
Embodiment 2, a kind of method for floating of phosphogypsum slag, and its step is following: in phosphogypsum slag, add entry, control ore pulp mass concentration is carried out flotation 30% in flotation device; Flotation is adopted and is roughly selected and 2 selected operations for 5 times; Add inhibitor 3.5kg/t phosphogypsum slag, collecting agent 300g/t phosphogypsum slag is roughly selected
IOperation is carried out roughly selecting operation 4 times again, and roughly selects operation at every turn and all add collecting agent 150g/t phosphogypsum slag; In the initial separatory cell is tailings; Merge roughly select froth pulp after, add inhibitor 1kg/t phosphogypsum slag carry out 2 times selected; Selected foam is a flotation concentrate high-quality ardealite, and product returns as chats and roughly selects in the cleaner cell
IOperation; Said inhibitor is a waterglass; Said collecting agent is that carbon number is the acetate or the hydrochloride of 8 ~ 18 alkyl fatty amine.
Embodiment 3, a kind of method for floating of phosphogypsum slag, and its step is following: in phosphogypsum slag, add entry, control ore pulp mass concentration is carried out flotation 22% in flotation device; Flotation is adopted and is roughly selected and 1 selected operation for 3 times; Add inhibitor 2.5kg/t phosphogypsum slag, collecting agent 200g/t phosphogypsum slag is roughly selected
IOperation is carried out roughly selecting operation 2 times again, and roughly selects operation at every turn and all add collecting agent 100g/t phosphogypsum slag; In the initial separatory cell is tailings; Merge roughly select froth pulp after, add inhibitor 0.5kg/t phosphogypsum slag carry out 1 time selected; Selected foam is a flotation concentrate high-quality ardealite, and product returns as chats and roughly selects in the cleaner cell
IOperation; Said inhibitor is a waterglass; Said collecting agent is that carbon number is the acetate or the hydrochloride of 8 ~ 18 alkyl fatty amine.
Embodiment 4, a kind of method for floating of phosphogypsum slag, and its step is following: in phosphogypsum slag, add entry, control ore pulp mass concentration is carried out flotation 20% in flotation device; Flotation is adopted and is roughly selected and 1 selected operation for 4 times; Add inhibitor 1.8kg/t phosphogypsum slag, collecting agent 150g/t phosphogypsum slag is roughly selected
IOperation is carried out roughly selecting operation 3 times again, and roughly selects operation at every turn and all add collecting agent 120g/t phosphogypsum slag; In the initial separatory cell is tailings; Merge roughly select froth pulp after, add inhibitor 0.7kg/t phosphogypsum slag carry out 1 time selected; Selected foam is a flotation concentrate high-quality ardealite, and product returns as chats and roughly selects in the cleaner cell
IOperation; Said inhibitor is a waterglass; Said collecting agent is that carbon number is the acetate or the hydrochloride of 8 ~ 18 alkyl fatty amine.
Embodiment 5, in the method for floating of embodiment 3 described phosphogypsum slags: described roughly selecting
IFlotation time is 3 ~ 8 minutes, and the flotation time of roughly selecting for the 2nd time is 2 ~ 5 minutes, and the flotation time of roughly selecting for the 3rd time is 2 ~ 5 minutes, selected flotation time 4 ~ 10 minutes.
Embodiment 6, with reference to Fig. 1, and the method for floating of phosphogypsum slag experiment one.
Somewhere, Yunnan original state phosphogypsum slag, main insoluble impurities is silicate and apatite.This ardealite is added water, and control ore pulp mass concentration is 25%.Flotation is adopted and is roughly selected the primary cleaning operation three times, adds waterglass 2.0kg/t phosphogypsum slag, and the hydrochloride 200g/t phosphogypsum slag of lauryl amine is roughly selected
IOperation, the hydrochloride 100g/t phosphogypsum slag that adds lauryl amine is again roughly selected
IIOperation, the hydrochloride 80g/t phosphogypsum slag that adds lauryl amine is again roughly selected
IIIOperation.Be tailings in the initial separatory cell, after roughly selecting froth pulp three times and merging, adding waterglass 0.5kg/t phosphogypsum slag carries out selected.Selected foam is flotation concentrate (a high-quality ardealite), and product (chats) returns and roughly selects in the cleaner cell
IOperation.Roughly select
IFlotation time 4 minutes is roughly selected
IIFlotation time 3 minutes is roughly selected
IIIFlotation time 2 minutes, selected flotation time 5 minutes.Floating product is dried in (40 ± 2) ℃ thermostatic drier, the analysis of weighing, and flotation experimental results is seen table 1.
Somewhere, Yunnan ardealite flotation experimental results table 1
Embodiment 7, with reference to Fig. 1, and the method for floating of phosphogypsum slag experiment two.
Somewhere, Hubei original state phosphogypsum slag, main insoluble impurities is quartz and apatite.This ardealite is added water, and control ore pulp mass concentration is 20%.Flotation adopts secondary to roughly select the primary cleaning operation, adds waterglass 1.5kg/t phosphogypsum slag, and the hydrochloride 250g/t phosphogypsum slag of lauryl amine is roughly selected
IOperation, the hydrochloride 100g/t phosphogypsum slag that adds lauryl amine is again roughly selected
IIOperation.In the initial separatory cell is mine tailing, after secondary is roughly selected the froth pulp merging, adds waterglass 0.5kg/t phosphogypsum slag and carries out selected.Selected foam is concentrate (a high-quality ardealite), and product (chats) returns and roughly selects in the cleaner cell
IOperation.Roughly select
IFlotation time 5 minutes is roughly selected
IIFlotation time 3 minutes, selected flotation time 6 minutes.Floating product is dried in (40 ± 2) ℃ thermostatic drier, the analysis of weighing, and flotation experimental results is seen table 2.
Somewhere, Hubei ardealite flotation experimental results table 2
Claims (3)
1. the method for floating of a phosphogypsum slag is characterized in that, its step is following: in phosphogypsum slag, add entry, control ore pulp mass concentration is carried out flotation 15 ~ 30% in flotation device; Flotation is adopted and is roughly selected and 1-2 selected operation for 2-5 time; Add inhibitor 1.5 ~ 3.5kg/t phosphogypsum slag, collecting agent 100 ~ 300g/t phosphogypsum slag is roughly selected
IOperation is carried out roughly selecting operation 1-4 time again, and roughly selects operation at every turn and all add collecting agent 50 ~ 150g/t phosphogypsum slag; In the initial separatory cell is tailings; Merge roughly select froth pulp after, add inhibitor 0.1 ~ 1kg/t phosphogypsum slag carry out 1-2 time selected; Selected foam is a flotation concentrate high-quality ardealite, and product returns as chats and roughly selects in the cleaner cell
IOperation; Said inhibitor is a waterglass; Said collecting agent is that carbon number is the acetate or the hydrochloride of 8 ~ 18 alkyl fatty amine.
2. the method for floating of phosphogypsum slag according to claim 1 is characterized in that: flotation is adopted and is roughly selected and 1 selected operation for 3 times.
3. the method for floating of phosphogypsum slag according to claim 2 is characterized in that: described roughly selecting
IFlotation time is 3 ~ 8 minutes, and the flotation time of roughly selecting for the 2nd time is 2 ~ 5 minutes, and the flotation time of roughly selecting for the 3rd time is 2 ~ 5 minutes, selected flotation time 4 ~ 10 minutes.
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| CN201110302398A CN102319633A (en) | 2011-10-09 | 2011-10-09 | A kind of method for floating of phosphogypsum slag |
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| CN201110302398A CN102319633A (en) | 2011-10-09 | 2011-10-09 | A kind of method for floating of phosphogypsum slag |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464288A (en) * | 2013-09-17 | 2013-12-25 | 云南省化工研究院 | Method for removing silicon from phosphogypsum in obverse floatation way under acidic condition |
| CN105537004A (en) * | 2015-12-15 | 2016-05-04 | 云南省化工研究院 | Preparing method for phosphogypsum flotation collector |
| CN108467016A (en) * | 2018-06-11 | 2018-08-31 | 华东理工大学 | A method of fluorine element being extracted from industrial gypsum using flotation technology |
| CN111644269A (en) * | 2020-06-02 | 2020-09-11 | 中蓝长化工程科技有限公司 | Method for comprehensively utilizing electrolytic manganese slag resources |
| CN112429991A (en) * | 2021-01-08 | 2021-03-02 | 瓮福（集团）有限责任公司 | Device for flotation and water washing of phosphogypsum |
| CN112871457A (en) * | 2021-01-11 | 2021-06-01 | 西南科技大学 | Method for purifying and decontaminating phosphogypsum |
| CN113695085A (en) * | 2021-06-29 | 2021-11-26 | 郑州大学 | Phosphogypsum desiliconization and decarbonization combined collecting agent and solution preparation method and application thereof |
| CN114247556A (en) * | 2021-12-23 | 2022-03-29 | 四川轻化工大学 | Phase change purification method for industrial byproduct gypsum and phase change purified gypsum |
| CN114605094A (en) * | 2022-03-28 | 2022-06-10 | 云南磷化集团有限公司 | Method for improving whiteness and purity of phosphogypsum by combination of selection and metallurgy |
| CN115672568A (en) * | 2022-12-30 | 2023-02-03 | 矿冶科技集团有限公司 | Method for preparing low-silicon high-grade phosphogypsum by reverse flotation and desiliconization of phosphogypsum waste residues |
| CN116063015A (en) * | 2023-02-03 | 2023-05-05 | 中国科学院过程工程研究所 | Method for preparing alpha-semi-hydrated gypsum by using phosphogypsum |
| CN117324122A (en) * | 2023-09-28 | 2024-01-02 | 昆明理工大学 | Comprehensive utilization method of phosphogypsum wastewater and high-sulfur copper tailings |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464288A (en) * | 2013-09-17 | 2013-12-25 | 云南省化工研究院 | Method for removing silicon from phosphogypsum in obverse floatation way under acidic condition |
| CN105537004A (en) * | 2015-12-15 | 2016-05-04 | 云南省化工研究院 | Preparing method for phosphogypsum flotation collector |
| CN105537004B (en) * | 2015-12-15 | 2018-04-06 | 云南省化工研究院 | A kind of method prepared by ardealite flotation collector |
| CN108467016A (en) * | 2018-06-11 | 2018-08-31 | 华东理工大学 | A method of fluorine element being extracted from industrial gypsum using flotation technology |
| CN108467016B (en) * | 2018-06-11 | 2021-04-23 | 华东理工大学 | Method for extracting fluorine element from industrial gypsum by using flotation technology |
| CN111644269B (en) * | 2020-06-02 | 2022-04-29 | 中蓝长化工程科技有限公司 | Method for comprehensively utilizing electrolytic manganese slag resources |
| CN111644269A (en) * | 2020-06-02 | 2020-09-11 | 中蓝长化工程科技有限公司 | Method for comprehensively utilizing electrolytic manganese slag resources |
| CN112429991A (en) * | 2021-01-08 | 2021-03-02 | 瓮福（集团）有限责任公司 | Device for flotation and water washing of phosphogypsum |
| CN112871457A (en) * | 2021-01-11 | 2021-06-01 | 西南科技大学 | Method for purifying and decontaminating phosphogypsum |
| CN113695085A (en) * | 2021-06-29 | 2021-11-26 | 郑州大学 | Phosphogypsum desiliconization and decarbonization combined collecting agent and solution preparation method and application thereof |
| CN114247556A (en) * | 2021-12-23 | 2022-03-29 | 四川轻化工大学 | Phase change purification method for industrial byproduct gypsum and phase change purified gypsum |
| CN114247556B (en) * | 2021-12-23 | 2023-06-09 | 四川轻化工大学 | Phase-change purification method for industrial byproduct gypsum and phase-change purified gypsum |
| CN114605094A (en) * | 2022-03-28 | 2022-06-10 | 云南磷化集团有限公司 | Method for improving whiteness and purity of phosphogypsum by combination of selection and metallurgy |
| CN114605094B (en) * | 2022-03-28 | 2023-09-01 | 云南磷化集团有限公司 | Method for improving whiteness and purity of phosphogypsum by combination of dressing and smelting |
| CN115672568A (en) * | 2022-12-30 | 2023-02-03 | 矿冶科技集团有限公司 | Method for preparing low-silicon high-grade phosphogypsum by reverse flotation and desiliconization of phosphogypsum waste residues |
| CN116063015A (en) * | 2023-02-03 | 2023-05-05 | 中国科学院过程工程研究所 | Method for preparing alpha-semi-hydrated gypsum by using phosphogypsum |
| CN117324122A (en) * | 2023-09-28 | 2024-01-02 | 昆明理工大学 | Comprehensive utilization method of phosphogypsum wastewater and high-sulfur copper tailings |
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Application publication date: 20120118 |