CN109487093A - A kind of hydrometallurgical leaching process - Google Patents
A kind of hydrometallurgical leaching process Download PDFInfo
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- CN109487093A CN109487093A CN201811258552.7A CN201811258552A CN109487093A CN 109487093 A CN109487093 A CN 109487093A CN 201811258552 A CN201811258552 A CN 201811258552A CN 109487093 A CN109487093 A CN 109487093A
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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
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
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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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/18—Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
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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
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
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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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Abstract
It is tender that the invention discloses a kind of hydrometallurgical leaching process, belong to field of hydrometallurgy, a kind of hydrometallurgical leaching process, the ore being collected is subjected to coarse crushing processing first, then banking up for mine heap is carried out, ore after coarse crushing is subjected to placement in heaps, it is sprayed, the mixed solution of thiobacillus ferrooxidant and sulfuric acid that pH value is 2-3 is uniformly sprayed at the top of mine heap, solution after recycling leaching, solution after leaching can flow into collecting tank, collecting tank is equipped with solution two-filtration devices close to the pool wall of mine heap, then metal recovery processing is carried out to the solution in collecting tank, solution after metal recovery is inflated and is added feedstock processing, then the solution through gas overcharging and after adding feedstock processing is sprayed again at the top of mine heap, it may be implemented to some edge mines, than leaner mine and discarded tailing etc. into The effect that row leaches, that is, reduce the waste of resource, while also reducing and leaching cost.
Description
Technical field
The present invention relates to field of hydrometallurgy, more specifically to a kind of hydrometallurgical leaching process.
Background technique
Hydrometallurgical history can trace back to B.C. 200 years, and Chinese Western Han Dynastry's period mentions copper with regard to useful blue stone method
It records.But the development in hydrometallurgy modern age and the success of zinc hydrometallurgy, the invention of producing aluminium oxide by bayer and Uranium industry
Development and the invention of hydroximic species of extractants the 1960s are simultaneously undivided applied to wet type copper smelting.Hydrometallurgy is to utilize
Leaching agent by valuable metal component dissolution in ore, concentrate, calcining and unclassified stores in the solution or with new solid separation, into
Row metal separation, enrichment and the science and technology extracted.Since this metallurgical process is mostly to carry out in aqueous solution, therefore claim wet process
Metallurgy.With the decline of the grade of ore and to the increasingly strict of environmental protection requirement, hydrometallurgy is in nonferrous production
Act on it is increasing, hydrometallurgy mainly include leaching, solid-liquor separation, solution purification, GOLD FROM PLATING SOLUTION belong to extract and wastewater treatment
Equal unit process.
When leaching, for some edge mines, directly giving it up than leaner mine and discarded tailing etc. be will cause
The waste of resource, but the process of ore leaching is very complicated and cost is very high, thus these mines are smelted and are not repaid again
It loses.
Summary of the invention
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of hydrometallurgical leaching process,
It may be implemented to reduce resource to some edge mines, the effect leached than leaner mine and discarded tailing etc.
Waste, while also reduce leach cost.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of hydrometallurgical leaching process, processing method are as follows:
Step 1: coarse crushing, carries out coarse crushing processing for the ore being collected；
Step 2: mine heap is banked up, the ore after coarse crushing obtained in the first step is subjected to placement in heaps；
Step 3: spray, the mixed solution of thiobacillus ferrooxidant and sulfuric acid that pH value is 2-3 is uniformly sprayed to step 2
In mine heap at the top of；
Step 4: the solution after recycling leaching, the solution after leaching can flow into collecting tank, collecting tank is close to the pond of mine heap
Wall is equipped with solution two-filtration devices, then carries out metal recovery processing to the solution in collecting tank；
Step 5: feedstock processing is inflated and added to the solution after metal recovery in step 4；
Step 6: being sprayed the solution in step 5 through gas overcharging and after adding feedstock processing at the top of mine heap again；
Step 7: lasting stand reaction ten months or more.
Further, the ore particles size after the coarse crushing in the step 1 is 5-8mm, and ore particles are larger, air exercise
Broken requirement is comparatively lower, reduces polishing cost.
Further, the mine in the step 2 piles up when banking up with 2000-4000 tons as a pile, is highly 2.5-3 meters,
Its shape is the frustoconical with natural angle of repose.
Further, the mixed solution of thiobacillus ferrooxidant and sulfuric acid is in unsaturation stream in mine heap in the step 3
The flowing of state can fully react with the ore particles on mine heap.
Further, the spraying intensity in the step 3 is 30-50 Sheng/㎡ .h, and carries out uniformly spray in daily 24 hours
Leaching, every heap mine heap persistently spray 40-50 days, allow the mixed solution of thiobacillus ferrooxidant and sulfuric acid fully and on mine heap
Ore particles contact.
Further, the speed inflated in the step 5 is 0.05-0.1m3/(m3), min and charge air conditioning is sky
Gas, the oxygen in air can be used as oxidant, while the carbon dioxide in air can satisfy thiobacillus ferrooxidant to carbon
Demand, the raw material of adding is nitrogen, phosphorus, sylvite.
Further, the solution two-filtration devices in the step 4 include two semi-circular filter screens, described in two
Semi-circular filter screen is fixedly connected with jagged change close to one end of collecting tank pool wall, on a semi-circular filter screen
Notch change is located at the middle part of semi-circular filter screen, and the notch change on another described semi-circular filter screen is located at semi-circular mistake
The both ends of strainer, the collecting tank pool wall are fixedly connected with shaft, and the notch change and pool wall are rotatablely connected, the semi-circular
Filter screen left and right ends are fixedly connected to inverted V-shaped snap-gauge, inverted V-shaped snap-gauge on a semi-circular filter screen and another
Inverted V-shaped snap-gauge on the semi-circular filter screen matches, and when use can be with the inverted V-shaped snap-gauge card on a semi-circular filter screen
Into in the inverted V-shaped snap-gauge on another semi-circular filter screen, then the notch change on two semi-circular filter screens is snapped into
In shaft, double filtration effect is formed.
Further, the mesh diameter of the semi-circular filter screen is 3mm, so that mesh is smaller than ore particles, so that leaching
Solution out can be entered in collecting tank by semi-circular filter screen, and the mine in semi-circular filter screen is flowed into the solution of leaching
Stone particle can be left in semi-circular filter screen.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
(1) this programme may be implemented to some edge mines, the effect leached than leaner mine and discarded tailing etc.
Fruit reduces the waste of resource, while also reducing and leaching cost.
(2) the ore particles size after the coarse crushing in step 1 is 5-8mm, and ore particles are larger, to the requirement phase smashed
It is lower for, reduce polishing cost.
(3) mine in step 2 piles up when banking up with 2000-4000 tons as a pile, is highly 2.5-3 meters, and shape is tool
There is the frustoconical of natural angle of repose.
(4) in step 3 the mixed solution of thiobacillus ferrooxidant and sulfuric acid in mine heap be in unsaturation stream mode stream
It is dynamic, it can fully react with the ore particles on mine heap.
(5) spraying intensity in step 3 is 30-50 Sheng/㎡ .h, and carries out daily 24 hours uniformly sprays, every heap mine heap
It persistently sprays 40-50 days, the mixed solution of thiobacillus ferrooxidant and sulfuric acid is fully connect with ore particles on mine heap
Touching.
(6) speed inflated in step 5 is 0.05-0.1m3/(m3Min), and charge air conditioning is air, in air
Oxygen can be used as oxidant, while the carbon dioxide in air can satisfy demand of the thiobacillus ferrooxidant to carbon, add original
Material is nitrogen, phosphorus, sylvite.
(7) the solution two-filtration devices in step 4 include two semi-circular filter screens, and two semi-circular filter screens lean on
One end of nearly collecting tank pool wall is fixedly connected with jagged change, and the notch change on a semi-circular filter screen is located at semi-circular
The middle part of filter screen, the notch change on another semi-circular filter screen are located at the both ends of semi-circular filter screen, collecting tank pool wall
It is fixedly connected with shaft, notch change and pool wall are rotatablely connected, and semi-circular filter screen left and right ends are fixedly connected to inverted V-shaped card
Plate, the inverted V-shaped snap-gauge on a semi-circular filter screen match with the inverted V-shaped snap-gauge on another semi-circular filter screen, use
When can be sticked into the inverted V-shaped snap-gauge on another semi-circular filter screen with the inverted V-shaped snap-gauge on a semi-circular filter screen, then
Notch change on two semi-circular filter screens is snapped into shaft, double filtration effect is formed.
(8) mesh diameter of semi-circular filter screen is 3mm, so that mesh is smaller than ore particles, so that the solution leached can
To be entered in collecting tank by semi-circular filter screen, and flowing into the ore particles in semi-circular filter screen with the solution of leaching can quilt
It stays in semi-circular filter screen.
Detailed description of the invention
Fig. 1 is positive structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of collecting tank part of the invention；
Fig. 3 is the structural schematic diagram at semi-circular filter screen of the invention；
Fig. 4 is the schematic perspective view at the one of semi-circular filter screen of the present invention；
Fig. 5 is the schematic perspective view at another semi-circular filter screen of the invention.
Figure label explanation:
1 mine heap, 2 collecting tanks, 3 semi-circular filter screens, 4 inverted V-shaped snap-gauges, 5 notch changes.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention；Technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description；Obviously；Described embodiments are only a part of the embodiments of the present invention；Instead of all the embodiments, it is based on
Embodiment in the present invention；It is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment；It shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "inner", "outside" " top/bottom end "
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Be equipped with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to removable
Connection is unloaded, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1:
A kind of hydrometallurgical leaching process referring to FIG. 1-2, processing method are as follows:
Step 1: coarse crushing, carries out coarse crushing processing for the ore being collected, the ore particles size after coarse crushing is 5mm, ore
Particle is larger, comparatively lower to the requirement smashed, and reduces polishing cost；
Step 2: mine heap 1 is banked up, the ore after coarse crushing obtained in the first step is subjected to placement in heaps, mine heap 1 is in heap
It is highly 2.5 meters with 2000 tons for a pile when setting, shape is the frustoconical with natural angle of repose；
Step 3: spray, pH value is uniformly sprayed in step 2 for 2 thiobacillus ferrooxidant and the mixed solution of sulfuric acid
The top of mine heap 1, the mixed solution of thiobacillus ferrooxidant and sulfuric acid is in the flowing of unsaturation stream mode in mine heap 1, can be with
It fully reacts with the ore particles on mine heap 1, spraying intensity is 30 Sheng/㎡ .h, and carries out uniformly spray in daily 24 hours
Leaching, every heap mine heap 1 persistently spray 40 days, allow the mixed solution of thiobacillus ferrooxidant and sulfuric acid fully and on mine heap 1
Ore particles contact；
Step 4: the solution after recycling leaching, the solution after leaching can flow into collecting tank 2, the geographical location of collecting tank 2
Lower than mine heap 1, allowing the solution after leaching, potential barrier into collecting tank 2, install close to the pool wall of mine heap 1 by collecting tank 2 everywhere
There are solution two-filtration devices, metal recovery processing then is carried out to the solution in collecting tank 2；
Step 5: feedstock processing is inflated and added to the solution after metal recovery in step 4, the speed of inflation is
0.05m3/m3Min, and charge air conditioning is air, the oxygen in air can be used as oxidant, while the titanium dioxide in air
Carbon can satisfy demand of the thiobacillus ferrooxidant to carbon, and adding raw material is nitrogen, phosphorus, sylvite；
Step 6: being sprayed the solution in step 5 through gas overcharging and after adding feedstock processing again to 1 top of mine heap；
Step 7: lasting stand reaction ten months or more, may be implemented to some edge mines, than leaner mine and discarded
The effect that is leached such as tailing, that is, reduce the waste of resource, while also reducing and leaching cost.
Embodiment 2:
A kind of hydrometallurgical leaching process referring to FIG. 1-2, processing method are as follows:
Step 1: coarse crushing, carries out coarse crushing processing for the ore being collected, the ore particles size after coarse crushing is 6mm, ore
Particle is larger, comparatively lower to the requirement smashed, and reduces polishing cost；
Step 2: mine heap 1 is banked up, the ore after coarse crushing obtained in the first step is subjected to placement in heaps, mine heap 1 is in heap
It is highly 2.8 meters with 3000 tons for a pile when setting, shape is the frustoconical with natural angle of repose；
Step 3: spray, pH value is uniformly sprayed for 2.5 thiobacillus ferrooxidant and the mixed solution of sulfuric acid to step 2
In the top of mine heap 1, the mixed solution of thiobacillus ferrooxidant and sulfuric acid is in the flowing of unsaturation stream mode in mine heap 1, can
Fully to react with the ore particles on mine heap 1, spraying intensity is 40 Sheng/㎡ .h, and carries out daily 24 hours uniformly
Spray, every heap mine heap 1 persistently sprays 45 days, allow the mixed solution of thiobacillus ferrooxidant and sulfuric acid fully with mine heap 1
Upper ore particles contact；
Step 4: the solution after recycling leaching, the solution after leaching can flow into collecting tank 2, the geographical location of collecting tank 2
Lower than mine heap 1, allowing the solution after leaching, potential barrier into collecting tank 2, install close to the pool wall of mine heap 1 by collecting tank 2 everywhere
There are solution two-filtration devices, metal recovery processing then is carried out to the solution in collecting tank 2；
Step 5: feedstock processing is inflated and added to the solution after metal recovery in step 4, the speed of inflation is
0.08m3/m3Min, and charge air conditioning is air, the oxygen in air can be used as oxidant, while the titanium dioxide in air
Carbon can satisfy demand of the thiobacillus ferrooxidant to carbon, and adding raw material is nitrogen, phosphorus, sylvite；
Step 6: being sprayed the solution in step 5 through gas overcharging and after adding feedstock processing again to 1 top of mine heap；
Step 7: lasting stand reaction ten months or more, may be implemented to some edge mines, than leaner mine and discarded
The effect that is leached such as tailing, that is, reduce the waste of resource, while also reducing and leaching cost.
Embodiment 3:
A kind of hydrometallurgical leaching process referring to FIG. 1-2, processing method are as follows:
Step 1: coarse crushing, carries out coarse crushing processing for the ore being collected, the ore particles size after coarse crushing is 8mm, ore
Particle is larger, comparatively lower to the requirement smashed, and reduces polishing cost；
Step 2: mine heap 1 is banked up, the ore after coarse crushing obtained in the first step is subjected to placement in heaps, mine heap 1 is in heap
It is highly 3 meters with 4000 tons for a pile when setting, shape is the frustoconical with natural angle of repose；
Step 3: spray, pH value is uniformly sprayed in step 2 for 3 thiobacillus ferrooxidant and the mixed solution of sulfuric acid
The top of mine heap 1, the mixed solution of thiobacillus ferrooxidant and sulfuric acid is in the flowing of unsaturation stream mode in mine heap 1, can be with
It fully reacts with the ore particles on mine heap 1, spraying intensity is 50 Sheng/㎡ .h, and carries out uniformly spray in daily 24 hours
Leaching, every heap mine heap 1 persistently spray 50 days, allow the mixed solution of thiobacillus ferrooxidant and sulfuric acid fully and on mine heap 1
Ore particles contact；
Step 4: the solution after recycling leaching, the solution after leaching can flow into collecting tank 2, the geographical location of collecting tank 2
Lower than mine heap 1, allowing the solution after leaching, potential barrier into collecting tank 2, install close to the pool wall of mine heap 1 by collecting tank 2 everywhere
There are solution two-filtration devices, metal recovery processing then is carried out to the solution in collecting tank 2；
Step 5: feedstock processing is inflated and added to the solution after metal recovery in step 4, the speed of inflation is
0.1m3/m3Min, and charge air conditioning is air, the oxygen in air can be used as oxidant, while the carbon dioxide in air
It can satisfy demand of the thiobacillus ferrooxidant to carbon, adding raw material is nitrogen, phosphorus, sylvite；
Step 6: being sprayed the solution in step 5 through gas overcharging and after adding feedstock processing again to 1 top of mine heap；
Step 7: lasting stand reaction ten months or more, may be implemented to some edge mines, than leaner mine and discarded
The effect that is leached such as tailing, that is, reduce the waste of resource, while also reducing and leaching cost.
Fig. 2-3 is please referred to, the solution two-filtration devices in step 4 include two semi-circular filter screens 3, semi-circular mistake
The mesh diameter of strainer 3 is 3mm, so that mesh is smaller than ore particles, the solution leached is allowed to pass through semi-circular filter screen 3
Into in collecting tank 2, and the ore particles flowed into semi-circular filter screen 3 with the solution of leaching can be left on semi-circular filter screen
In 3, two semi-circular filter screens 3 are fixedly connected with jagged change 5 close to one end of 2 pool wall of collecting tank, referring to Fig. 5, one
Notch change 5 on a semi-circular filter screen 3 is located at the middle part of semi-circular filter screen 3, referring to Fig. 4, another semi-circular mistake
Notch change 5 on strainer 3 is located at the both ends of semi-circular filter screen 3, and 2 pool wall of collecting tank is fixedly connected with shaft, notch change 5
It is rotatablely connected with pool wall, 3 left and right ends of semi-circular filter screen are fixedly connected to inverted V-shaped snap-gauge 4, a semi-circular filter screen 3
On inverted V-shaped snap-gauge 4 match with the inverted V-shaped snap-gauge 4 on another semi-circular filter screen 3, when use, can be with a semi-circular
Inverted V-shaped snap-gauge 4 on filter screen 3 sticks into the inverted V-shaped snap-gauge 4 on another semi-circular filter screen 3, then by two semi-circulars
Notch change 5 on filter screen 3 snaps into shaft, forms double filtration effect, so that the solid content in the solution leached
It is less, it is handled convenient for the metal recovery of infusion solution.
It is described above；It is merely preferred embodiments of the present invention；But scope of protection of the present invention is not limited thereto；
Anyone skilled in the art is in the technical scope disclosed by the present invention；According to the technique and scheme of the present invention and its
It improves design and is subject to equivalent substitution or change；It should be covered by the scope of protection of the present invention.
Claims (8)
1. a kind of hydrometallurgical leaching process, it is characterised in that: its processing method are as follows:
Step 1: coarse crushing, carries out coarse crushing processing for the ore being collected；
Step 2: mine heap (1) is banked up, the ore after coarse crushing obtained in the first step is subjected to placement in heaps；
Step 3: spray, the mixed solution of thiobacillus ferrooxidant and sulfuric acid that pH value is 2-3 is uniformly sprayed in step 2
At the top of mine heap (1)；
Step 4: the solution after recycling leaching, the solution after leaching can flow into collecting tank (2), collecting tank (2) is close to mine heap
(1) pool wall is equipped with solution two-filtration devices, then carries out metal recovery processing to the solution in collecting tank (2)；
Step 5: feedstock processing is inflated and added to the solution after metal recovery in step 4；
Step 6: being sprayed the solution in step 5 through gas overcharging and after adding feedstock processing at the top of mine heap (1) again；
Step 7: lasting stand reaction ten months or more.
2. a kind of hydrometallurgical leaching process according to claim 1, it is characterised in that: the coarse crushing in the step 1
Ore particles size afterwards is 5-8mm.
3. a kind of hydrometallurgical leaching process according to claim 1, it is characterised in that: the mine heap in the step 2
(1) when banking up with 2000-4000 tons for a pile, be highly 2.5-3 meters, shape be the frustum with natural angle of repose
Shape.
4. a kind of hydrometallurgical leaching process according to claim 1, it is characterised in that: iron oxide in the step 3
The mixed solution of Thiobacillus and sulfuric acid is in the flowing of unsaturation stream mode in mine heap (1).
5. a kind of hydrometallurgical leaching process according to claim 1, it is characterised in that: the spray in the step 3
Intensity is 30-50 Sheng/㎡ .h, and uniformly spray within daily 24 hours, and every heap mine heap (1) persistently sprays 40-50 days.
6. a kind of hydrometallurgical leaching process according to claim 1, it is characterised in that: inflated in the step 5
Speed is 0.05-0.1m3/(m3Min), and charge air conditioning is air, and the raw material of adding is nitrogen, phosphorus, sylvite.
7. a kind of hydrometallurgical leaching process according to claim 1, it is characterised in that: the solution in the step 4
Two-filtration devices include two semi-circular filter screens (3), and two semi-circular filter screens (3) are close to collecting tank (2) pool wall
One end be fixedly connected with jagged change (5), collecting tank (2) pool wall is fixedly connected with shaft, the notch change (5)
It being rotatablely connected with pool wall, semi-circular filter screen (3) left and right ends are fixedly connected to inverted V-shaped snap-gauge (4), and one described half
Inverted V-shaped snap-gauge (4) in circular filter net (3) and inverted V-shaped snap-gauge (4) phase on semi-circular filter screen (3) described in another
Match.
8. a kind of hydrometallurgical leaching process according to claim 1, it is characterised in that: the semi-circular filter screen
(3) mesh diameter is 3mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111593208A (en) * | 2020-05-21 | 2020-08-28 | 新疆金川矿业有限公司 | Method for improving leaching rate of heap leaching process of arsenic-containing and sulfur-containing gold ore |
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| CN111593208A (en) * | 2020-05-21 | 2020-08-28 | 新疆金川矿业有限公司 | Method for improving leaching rate of heap leaching process of arsenic-containing and sulfur-containing gold ore |
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