CN110643810A - Method for measuring saturated water holding rate of ore in heap leaching process - Google Patents
Method for measuring saturated water holding rate of ore in heap leaching process Download PDFInfo
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- CN110643810A CN110643810A CN201910937604.1A CN201910937604A CN110643810A CN 110643810 A CN110643810 A CN 110643810A CN 201910937604 A CN201910937604 A CN 201910937604A CN 110643810 A CN110643810 A CN 110643810A
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- ore
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- heap
- liquid storage
- mass
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000002386 leaching Methods 0.000 title claims abstract description 32
- 229920006395 saturated elastomer Polymers 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000005325 percolation Methods 0.000 claims abstract description 28
- 238000003860 storage Methods 0.000 claims abstract description 27
- 238000005507 spraying Methods 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (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 measuring the saturated water holding rate of ore in a heap leaching process, which comprises the steps of uniformly mixing ore with the mass of M, placing the mixture in a percolation column, and taking ore with the mass of M1The water is put in a liquid storage tank; the water in the liquid storage tank is controlled to be 8-16L/(m)2H) uniformly spraying the spraying intensity on the ore heap in the percolation column, and making the percolation liquid flow back to the liquid storage tank; continuously spraying until the ore heap is completely wetted and the percolation speed and the spraying speed are equal, and measuring the water mass m in the liquid storage tank2The saturated water holding rate of ore (m)2‑m1)/(M+(m2‑m1) X 100%; the method is simple to operate, high in applicability and accurate and reliable in obtained data, and can provide a basis for the design of a heap leaching field and the operation of heap leaching production.
Description
Technical Field
The invention belongs to the technical field of wet metallurgy, and particularly relates to a method for determining the saturated water holding rate of ore in a heap leaching process.
Background
Heap leaching is a process in which a heap of ores is sprayed with a leaching solution to selectively leach out the useful components of the ores during downward infiltration, and the useful components are recovered from the pregnant solution flowing out of the bottom of the heap. The heap leaching method is mainly applied to the mining of copper ores, uranium ores, gold ores and silver ores and the treatment of smelting plant slag and dressing plant tailings containing used components.
The saturated water holding capacity of the ore refers to the percentage of the water content of the ore relative to the total weight (dry ore weight plus water absorption) of the saturated ore when the ore absorbs water to reach a saturated state. The saturated water holding capacity of ore is an important physical parameter for heap leaching of ore, which affects the permeability and oxygen content of the heap and limits the leaching rate and leaching rate of useful components in the ore. The main purpose of determining the saturated water holding rate of the ore is to provide a basis for the design of a heap leaching field and the operation of heap leaching production.
At present, the saturated water holding rate of heap-leached ores is usually determined by a soaking method, in the method, a closed ore heap is soaked by a large amount of water (the liquid level is higher than the top of the ore heap), leachate of the ore heap is collected at regular intervals, the amount of the liquid is measured, then the leachate is returned to the ore heap again to be continuously soaked until the leachate is not reduced, and the saturated water holding rate of the ores can be calculated by counting the change of the water amount. This approach has some problems: when the percolate of the ore heap is collected, a large amount of liquid quickly seeps and washes the ore heap under the action of gravity to cause the fine particles in the ore heap to move down collectively, and the percolate is difficult to measure due to the non-uniform collection standard and the large amount of fine mud contained when the percolate stops being collected; after the ores are saturated and contain water, the distribution of the ores in the ore pile is greatly changed, and the subsequent leaching of useful components and the operation of a heap leaching process are influenced; the difference between the ore heap soaking and the spraying in the heap leaching industrial production is that the saturated water holding rate value measured by the soaking method cannot be perfectly matched with the actual heap leaching industrial production. Therefore, there is a need to find a measuring method which is simple in measurement, does not affect the ore distribution in the ore heap, and can well provide reliable parameters for the heap leaching industrial production.
Disclosure of Invention
In order to overcome the problems, the invention provides a method for measuring the saturated water holding rate of ore in the heap leaching process, which has the advantages of simple operation, strong applicability and accurate and reliable data.
The invention comprises the following steps:
step one, taking ores in an ore pile, uniformly mixing, weighing, recording the mass as M, placing in a percolation column, and taking the mass as M1The water is placed in a liquid storage tank;
step two, the water in the liquid storage tank is filled with 8-16L/(m)2H) sprayingUniformly spraying the ore in the percolation column with the strength, and making the percolation liquid flow back to a liquid storage tank;
and step three, continuously spraying until the ores in the percolation column are completely wetted and the percolation speed is equal to the spraying speed, measuring the mass of the liquid in the liquid storage tank and recording the mass as m2The saturated water holding rate of ore in the heap is (m)2-m1)/(M+(m2-m1))×100％。
The mass M of the ore in the ore pile and the mass M of the water in the liquid storage tank are obtained in the step one1And the mass m of the liquid in the liquid storage tank in the step three2The measurement units are the same.
The invention has the beneficial effects that:
the saturated water holding rate of the ore is determined by adopting a spraying mode, the saturated water holding rate is consistent with the heap leaching industrial production mode, and the spraying strength is consistent with the saturated water holding rate; liquid in the ore heap slowly permeates and wets, so that disturbance of fine particles in the ore heap is avoided, and the percolate is clear and does not contain fine mud; after the ores are saturated and contain water, the ore distribution in the ore pile is basically unchanged, and the leaching of the subsequent useful components and the operation of the heap leaching process are not influenced; the obtained data is accurate and reliable, and can provide basis for the design of a heap leaching field and the operation of heap leaching production.
Detailed Description
Example 1
The method for determining the saturated water content of the gold ore dump leaching ore in Guangxi province comprises the following steps:
1. mixing 80.0kg of the above ore, placing in a percolation column with diameter of 180 × 2000mm, placing 20.0kg of water in a 30L liquid storage tank;
2. the water in the liquid storage tank is mixed by 12L/(m)2H) uniformly spraying the ore in the percolation column with the spraying strength, and making the percolation liquid flow back to the liquid storage tank;
3. spraying is continued until the ore in the percolation column is fully wetted and the percolation speed is equal to the spraying speed, the water mass in a measuring liquid storage tank is 8.8kg, and the saturated water holding rate of the ore is (20.0-8.5)/(80+ (20.0-8.5)) × 100 percent and 12.28 percent.
The saturated water holding rate of the ore actually produced by heap leaching of the mine is 11.95 percent, and the deviation between the value measured by the method and the actual production value is 2.76 percent.
Example 2
The method for determining the saturated water content of the ore comprises the following steps of:
1. mixing 500.0kg of the above ore, placing in a filtration column with diameter of 500 × 2500mm, placing 80.0kg of water in a 100L liquid storage tank;
2. the water in the liquid storage tank is added with 8L/(m)2H) uniformly spraying the ore in the percolation column with the spraying strength, and making the percolation liquid flow back to the liquid storage tank;
3. spraying is continued until the ore in the percolation column is fully wetted and the percolation speed is equal to the spraying speed, the water mass in the measuring liquid storage tank is 42.8kg, and the saturated water holding rate of the ore is (80.0-42.8)/(500+ (80.0-42.8)) × 100% and 6.92%.
The saturated water holding rate of the ore actually produced by heap leaching of the mine is 7.08%, and the deviation between the value measured by the method and the actual production value is 2.26%.
Example 3
The method for determining the saturated water content of the ore in the heap leaching of certain copper ore in inner Mongolia has the following steps:
1. 30000.0kg of the ore is taken and evenly mixed, the mixture is placed in a percolation column with the specification of phi 1500 multiplied by 10000mm, 3000.0kg of water is taken and placed in a liquid storage tank with the volume of 5000L;
2. the water in the liquid storage tank is mixed by 16L/(m)2H) uniformly spraying the ore in the percolation column with the spraying strength, and making the percolation liquid flow back to the liquid storage tank;
3. spraying is continued until the ore in the percolation column is fully wetted and the percolation speed is equal to the spraying speed, the water mass in the measuring reservoir is 851.5kg, and the saturated water holding rate of the ore is (3000.0-851.5)/(30000+ (3000.0-851.5)) multiplied by 100 percent and 6.68 percent.
The saturated water holding rate of the ore actually produced by heap leaching of the mine is 6.52 percent, and the deviation of the value measured by the method of the invention and the actual production value is 2.45 percent.
In summary, the deviation between the measured value and the actual production value of the method of the invention in the three embodiments is less than 3%, which proves that the data obtained by the method is accurate and reliable.
Claims (2)
1. A method for measuring the saturated water holding rate of ore in a heap leaching process is characterized by comprising the following steps:
step one, taking ores in an ore pile, uniformly mixing, weighing, recording the mass as M, placing in a percolation column, and taking the mass as M1The water is placed in a liquid storage tank;
step two, the water in the liquid storage tank is filled with 8-16L/(m)2H) uniformly spraying the ore in the percolation column with the spraying strength, and making the percolation liquid flow back to the liquid storage tank;
and step three, continuously spraying until the ores in the percolation column are completely wetted and the percolation speed is equal to the spraying speed, measuring the mass of the liquid in the liquid storage tank and recording the mass as m2The saturated water holding rate of ore in the heap is (m)2-m1)/(M+(m2-m1))×100％。
2. The method for determining the saturated water holding rate of ore in heap leaching process according to claim 1, wherein the mass M of ore in the ore heap and the mass M of water in the liquid storage tank are obtained in the first step1And the mass m of the liquid in the liquid storage tank in the step three2The measurement units are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910937604.1A CN110643810A (en) | 2019-09-30 | 2019-09-30 | Method for measuring saturated water holding rate of ore in heap leaching process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910937604.1A CN110643810A (en) | 2019-09-30 | 2019-09-30 | Method for measuring saturated water holding rate of ore in heap leaching process |
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| Publication Number | Publication Date |
|---|---|
| CN110643810A true CN110643810A (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910937604.1A Pending CN110643810A (en) | 2019-09-30 | 2019-09-30 | Method for measuring saturated water holding rate of ore in heap leaching process |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969350A (en) * | 2021-10-29 | 2022-01-25 | 浙江秦核环境建设有限公司 | Dump leaching field for green mine |
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| US3804598A (en) * | 1971-09-10 | 1974-04-16 | Reynolds Metals Co | Process for the crystallization of aluminum nitrate nonahydrate |
| US4701309A (en) * | 1984-11-30 | 1987-10-20 | Umetco Minerals Corporation | Method of operating a heap leach for recovering uranium and vanadium |
| JPS6318141A (en) * | 1986-07-09 | 1988-01-26 | Toshiba Corp | Temperature reducer for gas turbine |
| WO1993018190A1 (en) * | 1989-03-13 | 1993-09-16 | Chemical Lime Company | Composition and method for agglomerating ore |
| CN103409620A (en) * | 2013-09-02 | 2013-11-27 | 南华大学 | Method for measuring leaching parameters of dump leaching mineral pile at different depths |
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| CN106282551A (en) * | 2016-09-18 | 2017-01-04 | 深圳市如茵生态环境建设有限公司 | A kind of shale and low-grade refractory process the pelletize heap leaching method of fine ore |
| CN106644816A (en) * | 2017-01-19 | 2017-05-10 | 南京林业大学 | Instrument and method for determining saturated soil moisture content |
| CN108614910A (en) * | 2018-03-06 | 2018-10-02 | 江西理工大学 | The computational methods of ion type rareearth mine in_situ leaching critical groundwater table |
-
2019
- 2019-09-30 CN CN201910937604.1A patent/CN110643810A/en active Pending
Patent Citations (10)
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| US3804598A (en) * | 1971-09-10 | 1974-04-16 | Reynolds Metals Co | Process for the crystallization of aluminum nitrate nonahydrate |
| US4701309A (en) * | 1984-11-30 | 1987-10-20 | Umetco Minerals Corporation | Method of operating a heap leach for recovering uranium and vanadium |
| JPS6318141A (en) * | 1986-07-09 | 1988-01-26 | Toshiba Corp | Temperature reducer for gas turbine |
| WO1993018190A1 (en) * | 1989-03-13 | 1993-09-16 | Chemical Lime Company | Composition and method for agglomerating ore |
| CN103409620A (en) * | 2013-09-02 | 2013-11-27 | 南华大学 | Method for measuring leaching parameters of dump leaching mineral pile at different depths |
| CN104152677A (en) * | 2014-08-18 | 2014-11-19 | 武汉钢铁(集团)公司 | A method of controlling the suitable granulation moisture content of a sinter mixture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969350A (en) * | 2021-10-29 | 2022-01-25 | 浙江秦核环境建设有限公司 | Dump leaching field for green mine |
| CN113969350B (en) * | 2021-10-29 | 2023-08-08 | 浙江秦核环境建设有限公司 | Heap leaching field of green mine |
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Application publication date: 20200103 |