CN109806980A - A kind of method and its application of malachite sulfur product control - Google Patents
A kind of method and its application of malachite sulfur product control Download PDFInfo
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- CN109806980A CN109806980A CN201910081680.7A CN201910081680A CN109806980A CN 109806980 A CN109806980 A CN 109806980A CN 201910081680 A CN201910081680 A CN 201910081680A CN 109806980 A CN109806980 A CN 109806980A
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- sulfur product
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Abstract
A kind of method and its application of malachite sulfur product control, the sulphur for using 1:1 to match: thiocarbamide powder is as vulcanizing agent, iron powder is completed malachite using mechanochemical treatment in grinding process and is vulcanized as vulcanization reaction auxiliary agent, can be in one layer of CuFeS of malachite Surface Creation2Based on sulfide film, the sulfide film chemical stability and mechanical stability are strong, oxidation reaction will not occur in subsequent floatation process, product film will not mechanical detachment under the revolving speed of 160~180rpm for flotation device stirring rotator.Malachite flotation recovery rate after being vulcanized with this method can achieve 75.6%~82.5%, close to the floatation indicators of sulphide ore, have broad popularization and application prospect.
Description
Technical field
The invention belongs to technical field of mineral processing, are related to the sulfide flotation of malachite, in particular to a kind of malachite sulphur
Change the method and its application of product control.
Background technique
As mineral resources are increasingly poor thin miscellaneous, people are to the comprehensive recovery of resource, the quality of concentrate product and flotation point
Requirement from effect is continuously improved, and the FLOTATION SEPARATION of complex multi-metal oxide ore also seems increasingly important.Malachite is relative to sulphur
Change for copper mine, solubility is preferably and surface hydrophilicity is higher, is not easy flotation, therefore being firstly vulcanized before flotation is current using most
For extensive method.Vulcanization is exactly to change mineral surfaces property by addition vulcanizing agent, and mineral surfaces is made to generate one layer of sulphide ore
Film, improving hydrophobicity becomes easily floating, improves the rate of recovery.The vulcanizing agent being commonly used is vulcanized sodium or NaHS,
Such vulcanizing agent has that vulcanization reaction is relatively slow, process is not easy to control, sulfide film stability difference, and the vulcanization generated
Object film is easy to loose under the effect of ore pulp complex flowfield and falls off, and especially dosage is difficult to hold, vulcanized sodium or NaHS
Dosage is very few cannot to ensure enough reducing atmospheres, vulcanization effect is not achieved, dosage is excessive again can be bright to subsequent flotation generation
Aobvious inhibiting effect.
Summary of the invention
In order to overcome the disadvantage of above-mentioned malachite floatation indicators difference, the purpose of the present invention is to provide a kind of vulcanizations of malachite
The method and its application of product control, this method can be effectively controlled malachite sulfur product, at one layer of malachite Surface Creation
CuFeS2Based on sulfide film, the sulfide film hydrophobicity, mechanical stability and chemical stability are strong, in subsequent flotation
Will not aoxidize in the process, react flotation device stirring rotator under the revolving speed of 50-60rpm product film will not mechanical detachment,
Malachite sulfur product efficient vulcanization malachite and can be can be effectively controlled using this method, increase substantially the concentrate of malachite
The rate of recovery.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of method of malachite sulfur product control, uses sulphur and thiocarbamide powder as vulcanizing agent, iron powder is as sulphur
Change reaction promoter, completes malachite using mechanochemical treatment in grinding process and vulcanize.
The mass ratio of the sulphur and thiocarbamide is 1:1.
The malachite is rear malachite fine crushing, partial size < 8mm.
The vulcanizing agent dosage is 300~1000g/t.
The vulcanization reaction auxiliary dosage is 100~300g/t.
The grinding mode is dry milling, and the ore grinding time is 5~15min.
It malachite will carry out flotation (use conventional flotation process) after vulcanization, flotation recovery rate reaches 75.6%~
82.5%, close to the floatation indicators of sulphide ore, have broad popularization and application prospect.
The flotation uses butyl xanthate for collecting agent, and dosage 55-100mg/L, 2# oil is foaming agent, additional amount 1~4
μL/L。
The principle of the present invention is:
The sulphur for using 1:1 to match: thiocarbamide powder is as vulcanizing agent, and iron powder is as vulcanization reaction auxiliary agent, in grinding process
It is middle that ion exchange occurs using mechanochemical treatment, it, should in the sulfide film based on one layer of CuFeS2 of malachite Surface Creation
Sulfide film hydrophobicity, chemical stability and mechanical stability are strong, there is the raising using malachite flotation recovery rate.
Compared with the method for existing vulcanization malachite, curingprocess rate of the present invention is fast, high-efficient, easy to operate, Neng Goushi
Now oxidation copper resource is maximally utilized.
Specific embodiment
Below with reference to the embodiment embodiment that the present invention will be described in detail.
Embodiment 1
In the grinding process of malachite, it is that 1:1 configures sulphur, thiocarbamide powder as vulcanizing agent according to mass ratio, presses
The dosage of 300g/t is added in grinding machine, auxiliary agent iron powder is added according still further to the dosage of 100g/t, dry grind 5min；Using normal after ore grinding
Advise method for floating, the butyl xanthate that dosage is 55mg/L is collecting agent, act on 3min, 2# oil be foaming agent, 1 μ L/L of additional amount,
1min is acted on, bubble 4min is scraped, malachite flotation recovery rate can achieve 75.6%.
With the scheme that sorts that vulcanizing agent is not added, this method improves 35 percentage points of the malachite rate of recovery.
Embodiment 2
In the grinding process of malachite, it is that 1:1 configures sulphur, thiocarbamide powder as vulcanizing agent according to mass ratio, presses
The dosage of 500g/t is added in grinding machine, auxiliary agent iron powder is added according still further to the dosage of 200g/t, dry grind 10min；It is used after ore grinding
Conventional flotation method, butyl xanthate are collecting agent, dosage 85mg/L, act on 3min, and 2# oil is foaming agent, 2 μ L/L of additional amount,
1min is acted on, bubble 4min is scraped, malachite flotation recovery rate can achieve 80.3%.
With the scheme that sorts that vulcanizing agent is not added, this method improves 39.7 percentage points of the malachite rate of recovery.
Embodiment 3
In the grinding process of malachite, it is that 1:1 configures sulphur, thiocarbamide powder as vulcanizing agent according to mass ratio, presses
The dosage of 1000g/t is added in grinding machine, auxiliary agent iron powder is added according still further to the dosage of 300g/t, dry grind 15min；It is used after ore grinding
Conventional flotation method, butyl xanthate are collecting agent, and dosage 100mg/L acts on 3min, and 2# oil is foaming agent, 4 μ L/ of additional amount
L acts on 1min, scrapes bubble 4min, and malachite flotation recovery rate can achieve 82.5%.
With the scheme that sorts that vulcanizing agent is not added, this method improves 41.9 percentage points of the malachite rate of recovery.
Claims (8)
1. a kind of method of malachite sulfur product control, which is characterized in that use sulphur and thiocarbamide powder as vulcanizing agent, iron
Powder is completed malachite using mechanochemical treatment in grinding process and is vulcanized as vulcanization reaction auxiliary agent.
2. the method for malachite sulfur product control according to claim 1, which is characterized in that the matter of the sulphur and thiocarbamide
Amount is than being 1:1.
3. the method for malachite sulfur product control according to claim 1, which is characterized in that after the malachite is fine crushing
Malachite, partial size < 8mm.
4. the method for malachite sulfur product control according to claim 1, which is characterized in that the vulcanizing agent dosage is
300~1000g/t.
5. the method for malachite sulfur product control according to claim 1, which is characterized in that the vulcanization reaction auxiliary agent is used
Amount is 100~300g/t.
6. the method for malachite sulfur product control according to claim 1, which is characterized in that the grinding mode is dry type
Ore grinding, ore grinding time are 5~15min.
7. the application of the method for the control of malachite sulfur product described in claim 1, which is characterized in that malachite carries out after vulcanization
Flotation, flotation recovery rate reach 75.6%~82.5%.
8. applying according to claim 7, which is characterized in that the flotation uses butyl xanthate for collecting agent, dosage 55-
100mg/L, 2# oil are foaming agent, 1~4 μ L/L of additional amount.
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| CN201910081680.7A CN109806980B (en) | 2019-01-28 | 2019-01-28 | Method for controlling malachite vulcanization products and application thereof |
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| CN201910081680.7A CN109806980B (en) | 2019-01-28 | 2019-01-28 | Method for controlling malachite vulcanization products and application thereof |
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| CN109806980B CN109806980B (en) | 2020-12-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634375A (en) * | 2021-08-13 | 2021-11-12 | 西安建筑科技大学 | Beneficiation method for low-grade mixed copper oxide ore |
| CN115487932A (en) * | 2022-09-26 | 2022-12-20 | 昆明理工大学 | Method for pretreatment-xanthate flotation of silicate type copper oxide ore surface |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113634375A (en) * | 2021-08-13 | 2021-11-12 | 西安建筑科技大学 | Beneficiation method for low-grade mixed copper oxide ore |
| CN115487932A (en) * | 2022-09-26 | 2022-12-20 | 昆明理工大学 | Method for pretreatment-xanthate flotation of silicate type copper oxide ore surface |
| CN115487932B (en) * | 2022-09-26 | 2024-04-09 | 昆明理工大学 | Method for surface pretreatment-xanthate flotation of silicate copper oxide ore |
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| CN109806980B (en) | 2020-12-01 |
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