CN104785377A - Preparation method for tennantite inhibitor - Google Patents
Preparation method for tennantite inhibitor Download PDFInfo
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- CN104785377A CN104785377A CN201510227199.6A CN201510227199A CN104785377A CN 104785377 A CN104785377 A CN 104785377A CN 201510227199 A CN201510227199 A CN 201510227199A CN 104785377 A CN104785377 A CN 104785377A
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- tennantite
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Abstract
A preparation method for a tennantite inhibitor includes the following steps that firstly, acetic acid, nitric acid and water are mixed to obtain a solution 1 according to the mass ratio of the acetic acid to the nitric acid to the water being 1-2:1-3:1-4, then cassava starch is added to the solution 1 according to the mass ratio of the cassava starch to the solution 1 being 1-2:2-5, stirring is conducted until dissolving is achieved, and a solution 2 is obtained; secondly, sodium sulfite and potassium permanganate are added to the solution 2 according to the mass ratio of the sodium sulfite to the potassium permanganate to the solution 2 being 1-2:1-3:2-4, the temperature of the solution 2 is controlled to range from 55 DEG C to 65 DEG C, a stirring reaction is kept for 2 h-3 h to obtain a solution 3, extraction filtration is carried out on the solution 3 to obtain a viscous material, finally the viscous material is dried under the condition of 50 DEG C-55 DEG C, and the tennantite inhibitor is obtained. The inhibitor prepared according to the method can inhibit tennantite, flotation separation can be conducted on chalcopyrite and the tennantite, and the content of arsenic in copper concentrates is lowered.
Description
One, technical field
The present invention relates to a kind of preparation method of tennantite inhibitor, in the mixed copper concentrate particularly coexisted for chalcopyrite and tennantite, suppresses preparation method and the application of a kind of inhibitor of tennantite when need reduce arsenic content in copper concentrate.
Two, background technology
In some brass mineral deposits, usually contain other as other association copper sulfide minerals such as covellite, chalmersite, tennantites, for the recovery of this kind of Copper Ores, current technique of preparing is quite ripe, and technical process is also comparatively simple.On the one hand the floatability of copper sulfide mineral is better, and on the other hand, in impure mineral except pyrite, mispickel etc. have certain interference to copper sulfide mineral flotation, other can not have an impact to the flotation of copper sulfide mineral as the impure mineral such as silicon, calcium.Due to the existence of tennantite, in its flotation concentrates, arsenic content is higher, in order to strictly controlled environment pollutes in smelting process, arsenic content in copper concentrate be there are certain requirements, generally be no more than 0.5%, if too much containing tennantite, inevitable arsenic content is higher, and the sale of such copper concentrate can be affected.
Three, summary of the invention
The object of the present invention is to provide a kind of preparation method of tennantite inhibitor, the prepared inhibitor obtained can suppress the tennantite in chalcopyrite and tennantite bulk concentrate, reduces the arsenic content in copper concentrate.
The present invention achieves the above object by the following technical solutions: a kind of preparation method of tennantite inhibitor, comprise the steps: first by acetic acid, nitric acid and water acetic acid in mass ratio: nitric acid: water=1 ~ 2:1 ~ 3:1 ~ 4 are mixed to get solution 1, then tapioca in mass ratio=1 ~ 2:2 ~ 5 are added in solution 1, be stirred to and dissolve to obtain solution 2; Then sodium sulfite, potassium permanganate in mass ratio=1 ~ 2:1 ~ 3:2 ~ 4 are added in solution 2, controlling solution 2 temperature is 55 ~ 65 DEG C, stirring reaction keeps 2 ~ 3h to obtain solution 3, solution 3 suction filtration is obtained dope, finally that dope is dry under 50 ~ 55 DEG C of conditions, be described tennantite inhibitor.
During flotation, slurry pH is 8.5 ~ 9.5; In floatation process, the bulk concentrate of chalcopyrite and tennantite is added water after stirring, add described inhibitor, collecting agent.
Dosing is: 200 ~ 300g/t.
Concrete advantage of the present invention is:
1, the inhibitor adopting the present invention to be prepared into can suppress tennantite, reduces arsenic content in copper concentrate.
2, dosing is few.
Four, detailed description of the invention
Below by way of specific embodiment, technical scheme of the present invention is further described.
Embodiment 1
An example of the preparation method of tennantite inhibitor of the present invention, comprises the following steps:
First by acetic acid, nitric acid and water acetic acid in mass ratio: nitric acid: water=1:1:1 is mixed to get solution 1, then by tapioca in mass ratio=1:2 adds in solution 1, be stirred to and dissolve to obtain solution 2; Then by sodium sulfite, potassium permanganate in mass ratio=1:1:2 adds in solution 2, controlling solution 2 temperature is 55 DEG C, and stirring reaction keeps 2h to obtain solution 3, and solution 3 suction filtration is obtained dope, finally that dope is dry under 50 DEG C of conditions, namely obtain described tennantite inhibitor.
Embodiment 2
Another example of the preparation method of tennantite inhibitor of the present invention, comprises the following steps:
First by acetic acid, nitric acid and water acetic acid in mass ratio: nitric acid: water=2:3:4 is mixed to get solution 1, then by tapioca in mass ratio=2:5 adds in solution 1, be stirred to and dissolve to obtain solution 2; Then by sodium sulfite, potassium permanganate in mass ratio=2:3:4 adds in solution 2, controlling solution 2 temperature is 65 DEG C, and stirring reaction keeps 3h to obtain solution 3, and solution 3 suction filtration is obtained dope, finally that dope is dry under 55 DEG C of conditions, namely obtain described tennantite inhibitor.
Embodiment 3
The present embodiment is the application example of described tennantite inhibitor in chalcopyrite and tennantite FLOTATION SEPARATION.
1, raw mineral materials:
Raw mineral materials chalcopyrite used and tennantite bulk concentrate, wherein copper content is 25.62%, arsenic content is 2.17%, sulfur content is 26.50%, iron content is 12.40%, show through material phase analysis, mainly exist with chalcopyrite, tennantite form in bulk concentrate, separately have a small amount of vitreous copper, covellite and silicon, calcareous mineral.
2, regime of agent and operating condition: adjust pH values of pulp to 8.5 ~ 9.5, by inhibitor 200g/t with lime, ethyl xanthogenate 50g/t dosing is tested, result shows to adopt above agentia condition can effectively by chalcopyrite and tennantite FLOTATION SEPARATION, under being 2.17% condition to ore deposit arsenic content, scan and recleaning for three times through one roughing, flotation concentrate arsenic content is reduced to 0.35%.
Embodiment 4
The present embodiment is the Another Application example of described tennantite inhibitor in chalcopyrite and tennantite FLOTATION SEPARATION.
1, raw mineral materials:
Raw mineral materials chalcopyrite used and tennantite bulk concentrate, wherein copper content is 27.83%, arsenic content is 3.64%, sulfur content is 27.32%, iron content is 10.56%, show through material phase analysis, mainly exist with chalcopyrite, tennantite form in bulk concentrate, separately have a small amount of vitreous copper, covellite and silicon, calcareous mineral.
2, regime of agent and operating condition: adjust pH values of pulp to 8.5 ~ 9.5, by inhibitor 300g/t with lime, ethyl xanthogenate 50g/t dosing is tested, result shows to adopt above agentia condition can effectively by chalcopyrite and tennantite FLOTATION SEPARATION, under being 3.64% condition to ore deposit arsenic content, scan and recleaning for three times through one roughing, flotation concentrate arsenic content is reduced to 0.37%.
Claims (3)
1. the preparation method of a tennantite inhibitor, it is characterized in that, comprise the steps: first to be acetic acid in mass ratio by acetic acid, nitric acid and water: nitric acid: water=1 ~ 2:1 ~ 3:1 ~ 4 are mixed to get solution 1, then tapioca in mass ratio=1 ~ 2:2 ~ 5 are added in solution 1, be stirred to and dissolve to obtain solution 2; Then sodium sulfite, potassium permanganate in mass ratio=1 ~ 2:1 ~ 3:2 ~ 4 are added in solution 2, controlling solution 2 temperature is 55 ~ 65 DEG C, stirring reaction keeps 2 ~ 3h to obtain solution 3, solution 3 suction filtration is obtained dope, finally that dope is dry under 50 ~ 55 DEG C of conditions, namely obtain described tennantite inhibitor.
2. the application of tennantite inhibitor according to claim 1 in chalcopyrite and tennantite FLOTATION SEPARATION, is characterized in that, during flotation, slurry pH is 8.5 ~ 9.5; In floatation process, the bulk concentrate of chalcopyrite and tennantite is added water after stirring, adds described inhibitor, collecting agent,
The total consumption of inhibitor is: 200 ~ 300g/t.
3. the application of tennantite inhibitor according to claim 2 in chalcopyrite and tennantite FLOTATION SEPARATION, is characterized in that, during use, described inhibitor is first mixed with the aqueous solution that mass percentage concentration is 1 ~ 2%.
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| CN201510227199.6A CN104785377A (en) | 2015-05-06 | 2015-05-06 | Preparation method for tennantite inhibitor |
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| CN201510227199.6A CN104785377A (en) | 2015-05-06 | 2015-05-06 | Preparation method for tennantite inhibitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880007A (en) * | 2016-04-08 | 2016-08-24 | 湖南有色金属研究院 | Separation method for tennantite and galena |
| CN106492997A (en) * | 2016-11-02 | 2017-03-15 | 广西大学 | A kind of preparation method of realgar mineral inhibitor |
| CN111195563A (en) * | 2020-01-10 | 2020-05-26 | 昆明理工大学 | Preparation method and application method of inhibitor for separation of tennantite and chalcopyrite |
| CN114011584A (en) * | 2021-11-17 | 2022-02-08 | 广西大学 | Preparation method and application of copper-arsenic flotation separation inhibitor for mixed copper ore |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880007A (en) * | 2016-04-08 | 2016-08-24 | 湖南有色金属研究院 | Separation method for tennantite and galena |
| CN105880007B (en) * | 2016-04-08 | 2018-03-06 | 湖南有色金属研究院 | A kind of separation method of tennantite and galena |
| CN106492997A (en) * | 2016-11-02 | 2017-03-15 | 广西大学 | A kind of preparation method of realgar mineral inhibitor |
| CN111195563A (en) * | 2020-01-10 | 2020-05-26 | 昆明理工大学 | Preparation method and application method of inhibitor for separation of tennantite and chalcopyrite |
| CN114011584A (en) * | 2021-11-17 | 2022-02-08 | 广西大学 | Preparation method and application of copper-arsenic flotation separation inhibitor for mixed copper ore |
| CN114011584B (en) * | 2021-11-17 | 2023-09-08 | 广西大学 | Preparation method and application of copper-arsenic flotation separation inhibitor for mixed copper ores |
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Application publication date: 20150722 |