CN112795779A - Method for leaching copper-containing material under assistance of ultrasonic waves - Google Patents
Method for leaching copper-containing material under assistance of ultrasonic waves Download PDFInfo
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- CN112795779A CN112795779A CN202011480870.5A CN202011480870A CN112795779A CN 112795779 A CN112795779 A CN 112795779A CN 202011480870 A CN202011480870 A CN 202011480870A CN 112795779 A CN112795779 A CN 112795779A
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- leaching
- copper
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- ore pulp
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with acids or salts thereof
- C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for leaching copper-containing materials with the assistance of ultrasonic waves, which relates to the technical field of leaching of copper-containing materials and comprises the following steps: s1, preparing ore pulp, namely preparing dilute sulfuric acid with a certain concentration in a mechanical stirring barrel of a steel lining ceramic tile according to requirements, adding a copper-containing material subjected to ball milling, and heating the ore pulp, wherein the liquid-solid ratio is required to be 5-6: 1, and the initial discharge degree is 40-60 g/L; s2, leaching reaction, namely pumping the ore pulp prepared in the step S1 into an ultrasonic leaching device by a pump for reaction, wherein the ultrasonic leaching device consists of an ultrasonic wave source device and a pipeline made of a material with good wave permeability; and S3, performing liquid-solid separation, namely performing liquid-solid separation on the ore pulp after the reaction in the step S2 through a filtering device, wherein the solution is leachate, and the solid slag is leaching slag. The method for leaching the copper-containing material by the aid of the ultrasonic waves can shorten the leaching time 2/3.
Description
Technical Field
The invention relates to the technical field of leaching of copper-containing materials, in particular to a method for leaching the copper-containing materials under the assistance of ultrasonic waves.
Background
(1) Two main parameters of ultrasound:
the frequency F is more than 20KHz, and the power density P is more than 0.3W/cm 2.
(2) Ultrasonic effect:
mechanical effect: the mechanical action of the ultrasound may contribute to the emulsification of the liquid and the dispersion of the solid. When the liquid medium forms standing waves under the action of ultrasonic waves, solid particles suspended in the liquid are agglomerated at nodes under the action of mechanical force, and form periodic accumulation in space.
(ii) cavitation: ultrasonic waves can generate a large number of small bubbles when applied to a liquid. One reason is that a tensile stress locally occurs in the liquid to form a negative pressure, and the reduction in pressure supersaturates the gas originally dissolved in the liquid to escape from the liquid as small bubbles. Another reason is that strong tensile stresses "tear" the liquid into a void, known as cavitation. The small bubbles formed by cavitation will move, grow or suddenly disappear with the vibration of the surrounding medium. When the liquid is broken, the surrounding liquid suddenly rushes into bubbles to generate high temperature and high pressure, and simultaneously shock waves are generated.
③ heat effect. The liquid generates vibration due to ultrasonic waves, and thermal effect can be generated when the liquid absorbs the liquid.
Chemical effect. The action of ultrasound can accelerate chemical reactions.
When copper-containing materials are leached by dilute sulphuric acid, the materials are inevitably subjected to the existence of non-oxidation components such as copper sulfide, iron-manganese combined copper, silicon combined copper, red copper and the like which are difficult to dissolve, and in order to improve the leaching rate of copper, the general process conditions adopt strengthening measures such as high temperature, high acid, pressurization, reinforced stirring and the like, so that the energy consumption in the production process is high, and the requirement on equipment is also high.
Ultrasonic waves have been successfully applied to industry, agriculture, military and medicine, and especially cleaning and traditional Chinese medicine extraction are the examples of successful application of ultrasonic cavitation effect.
Inspired by the application of ultrasonic waves, the invention provides a method for leaching copper-containing materials by ultrasonic assistance in combination with the problems in the copper leaching process.
Introducing ultrasonic waves in the process of leaching copper-containing materials by using dilute sulfuric acid as a solvent, wherein under the ultrasonic cavitation effect, namely when the ultrasonic waves are propagated in a solution, an alternating period of positive and negative pressure exists, and the ultrasonic waves extrude the solution in a positive pressure phase, so that the original density of the solution is changed, and the original density of the solution is increased; in the negative pressure phase, the solution is thinned by ultrasonic waves, and the density is reduced. Such a strong tensile stress "tears" the liquid into a void, forming a small bubble. These small cavities swell and close rapidly, causing violent impact between the solution particles, thereby creating pressures of several thousand to tens of thousands of atmospheres. This vigorous interaction between the particles also causes a sudden increase in the temperature of the solution. Thus, the functions of high temperature, pressurization and enhanced stirring adopted in the copper leaching process are achieved, the mixing of two phases is accelerated, the penetrating power of a solvent is increased, and the leaching speed and the leaching amount of copper are improved.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for leaching a copper-containing material with the assistance of ultrasonic waves, which solves the problems that in the prior art, when the copper-containing material is leached by dilute sulfuric acid, the copper-containing material is difficult to dissolve, and non-oxidation components such as copper sulfide, iron-manganese combined copper, silicon combined copper, red copper and the like exist inevitably, and in order to improve the leaching rate of copper, the general process conditions adopt strengthening measures such as high temperature, high acid, pressurization, reinforced stirring and the like, so that the energy consumption in the production process is high, and the requirement on equipment is also high.
(II) technical scheme
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a method for leaching copper-containing materials with the assistance of ultrasonic waves comprises the following steps:
s1, preparing ore pulp, namely preparing dilute sulfuric acid with a certain concentration in a mechanical stirring barrel of a steel lining ceramic tile according to requirements, adding a copper-containing material subjected to ball milling, and heating the ore pulp, wherein the liquid-solid ratio is required to be 5-6: 1, and the initial discharge degree is 40-60 g/L;
s2, leaching reaction, namely pumping the ore pulp prepared in the step S1 into an ultrasonic leaching device by a pump for reaction, wherein the ultrasonic leaching device consists of an ultrasonic wave source device and a pipeline made of a material with good wave permeability;
and S3, performing liquid-solid separation, namely performing liquid-solid separation on the ore pulp after the reaction in the step S2 through a filtering device, wherein the solution is leachate, and the solid slag is leaching slag.
Preferably, the heating temperature of the ore pulp in the step S1 is 40-60 ℃.
Preferably, the control time in step S2 is 15 minutes.
(III) advantageous effects
The invention has the beneficial effects that:
1. the method for leaching the copper-containing material by the aid of the ultrasonic waves can shorten the leaching time 2/3.
2. The method for leaching the copper-containing material with the assistance of the ultrasonic waves has low energy consumption, and the temperature can be reduced to 40-60 ℃ from 90-98 ℃.
3. The method for leaching the copper-containing material with the assistance of the ultrasonic waves has the advantages of low equipment investment and capability of using normal-pressure and low-corrosion protection equipment.
4. The method for leaching the copper-containing material by ultrasonic assistance has the advantages of high copper leaching rate, low operation cost and remarkable comprehensive economic benefit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a method for leaching copper-containing materials with the assistance of ultrasonic waves comprises the following steps:
s1, preparing ore pulp, namely preparing dilute sulfuric acid with a certain concentration in a mechanical stirring barrel made of steel lining tiles according to requirements, adding a copper-containing material subjected to ball milling, and heating the ore pulp, wherein the liquid-solid ratio is 5-6: 1, the initial discharge degree is 40-60 g/L, and the temperature is 40-60 ℃;
s2, leaching reaction, namely pumping the ore pulp prepared in the step S1 into an ultrasonic leaching device by a pump for reaction, wherein the ultrasonic leaching device consists of an ultrasonic wave source device and a pipeline made of a material with good wave permeability, and the control time is 15 minutes;
and S3, performing liquid-solid separation, namely performing liquid-solid separation on the ore pulp after the reaction in the step S2 through a filtering device, wherein the solution is leachate, and the solid slag is leaching slag.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A method for leaching copper-containing materials with the assistance of ultrasonic waves comprises the following steps:
s1, preparing ore pulp, namely preparing dilute sulfuric acid with a certain concentration in a mechanical stirring barrel of a steel lining ceramic tile according to requirements, adding a copper-containing material subjected to ball milling, and heating the ore pulp, wherein the liquid-solid ratio is required to be 5-6: 1, and the initial discharge degree is 40-60 g/L;
s2, leaching reaction, namely pumping the ore pulp prepared in the step S1 into an ultrasonic leaching device by a pump for reaction, wherein the ultrasonic leaching device consists of an ultrasonic wave source device and a pipeline made of a material with good wave permeability;
and S3, performing liquid-solid separation, namely performing liquid-solid separation on the ore pulp after the reaction in the step S2 through a filtering device, wherein the solution is leachate, and the solid slag is leaching slag.
2. A method of ultrasonic assisted leaching of copper bearing material according to claim 1, characterised in that: and heating the ore pulp in the step S1 to 40-60 ℃.
3. A method of ultrasonic assisted leaching of copper bearing material according to claim 1, characterised in that: the control time in step S2 is 15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480870.5A CN112795779A (en) | 2020-12-16 | 2020-12-16 | Method for leaching copper-containing material under assistance of ultrasonic waves |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480870.5A CN112795779A (en) | 2020-12-16 | 2020-12-16 | Method for leaching copper-containing material under assistance of ultrasonic waves |
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| CN112795779A true CN112795779A (en) | 2021-05-14 |
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| CN202011480870.5A Pending CN112795779A (en) | 2020-12-16 | 2020-12-16 | Method for leaching copper-containing material under assistance of ultrasonic waves |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323173A (en) * | 2022-07-06 | 2022-11-11 | 福建有道贵金属材料科技有限公司 | Cyanide-free recovery method of solid waste containing precious metals |
| CN115323173B (en) * | 2022-07-06 | 2024-05-17 | 福建有道贵金属材料科技有限公司 | Cyanide-free recovery method for precious metal-containing solid waste |
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2020
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| CN103320616A (en) * | 2013-06-07 | 2013-09-25 | 东北大学 | Method for recovering copper through copper anode mud supersonic pretreatment |
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| CN115323173A (en) * | 2022-07-06 | 2022-11-11 | 福建有道贵金属材料科技有限公司 | Cyanide-free recovery method of solid waste containing precious metals |
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