CN115244267A - Method and system for long-term management of bauxite mining tailings - Google Patents
Method and system for long-term management of bauxite mining tailings Download PDFInfo
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- CN115244267A CN115244267A CN202180019244.2A CN202180019244A CN115244267A CN 115244267 A CN115244267 A CN 115244267A CN 202180019244 A CN202180019244 A CN 202180019244A CN 115244267 A CN115244267 A CN 115244267A
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 42
- 238000005065 mining Methods 0.000 title claims abstract description 37
- 230000007774 longterm Effects 0.000 title claims abstract description 10
- 239000002689 soil Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims description 18
- 239000007787 solid Substances 0.000 claims description 17
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 4
- 230000005764 inhibitory process Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000001629 suppression Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 238000007726 management method Methods 0.000 description 7
- 239000006227 byproduct Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 3
- 238000012876 topography Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241001480233 Paragonimus Species 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910001679 gibbsite Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005456 ore beneficiation Methods 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000036561 sun exposure Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
- C01F7/066—Treatment of the separated residue
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/32—Reclamation of surface-mined areas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
-
- 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
- C22B21/00—Obtaining aluminium
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- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Analysing Materials By The Use Of Radiation (AREA)
- Manufacture And Refinement Of Metals (AREA)
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Abstract
The present application relates to methods and systems for long term management of tailings produced during bauxite mining. Bauxite ores are often found in shallow (typically less than 15 meters) soil layers, known as topsoil layers. The mining method comprises the following main operations which are carried out in sequence: plant suppression, topsoil removal, bauxite removal and transport, bauxite beneficiation, and land reclamation. The present invention relates to a method and system that significantly reduces the environmental footprint, operational risk and capital intensity of bauxite mining activities by backfilling tailings produced during a beneficiation step to substantially the same place where the material was originally mined.
Description
Technical Field
The present invention relates to methods and systems for long term management of tailings produced during a bauxite mining process. According to the method and system, the tailings can be replaced in a permanent manner at the same location where they are mined as part of the ore.
Bauxite ore contains alumina and is typically a deposit mined from the ground. Such ores are often found in shallow (typically less than 15 meters) soil layers (known as topsoil layers). The mining method that is considered most suitable for this type of bauxite deposit is the surface mining method. This mining method comprises a sequence of cyclical operations: plant inhibition, topsoil (overburden) removal, ore removal and transport, ore beneficiation, land reclamation. Because it allows rehabilitation to occur shortly after mining the ore, a surface mining method will typically have low environmental and visual impact.
Fig. 1 illustrates the main operations of a conventionally known bauxite mining method. During the beneficiation step, as the ore is enriched in alumina in the processing plant, tailings with a high liquid content are produced and are typically stored in dams (dam) or reservoirs (reservoir). One problem with mining companies is that the size of these dams or reservoirs may increase year by year due to the difficulty in finding sustainable sediment solutions.
The present invention is particularly concerned with improving the above mentioned prior art of mining tailings management by implementing a novel method and system for tailings backfilling, and by which tailings are returned to substantially the same location from which they were originally mined, in a sustainable and permanent manner.
Technical Field
The invention is particularly suited to the handling of particular ores according to the applicant's paragonimus palatinosa (paragoninas) mine, but may also be applied to other ores.
The invention relates to sedimentary tailings (which isBauxite oreBy-products of beneficiation) including grinding and particle size classification. These are mechanical processes rather than chemical processes, and thus the by-product is bauxiteInertia ofAnd (4) tailings.
Preferably, mechanical beneficiation of bauxite ore can be performed immediately prior to transporting the beneficiated product to an alumina refinery. The distance between the mine and the refinery can sometimes be several hundred kilometers or more. Red mud is a by-product of refineries.
Bauxite inert tailings and red mud "
"bauxite (inert) tailings" describes the by-products produced during the mining and beneficiation of bauxite ores by the successive comminution stages associated with the desliming process. Briefly, bauxite tailings are a byproduct of the mining process.
Although "bauxite tailings" are inert, i.e. they pose no risk to human health or to the environment, "red mud" is harmful to the environment due to its alkalinity.
Summary of The Invention
The object of the present invention is a more efficient and environmentally friendly process for the long-term management of tailings produced during the mining of bauxite ores and a corresponding system for carrying out the process. The environmental impact of the mining activity is significantly reduced by the present invention.
These and further advantages, which may be achieved by the present invention, are specified by the appended claims.
In accordance with claim 1, there is provided a method of long term management of ore, wherein mining bauxite ore in a continuous steady state manner includes steps associated with the mining section including plant suppression, topsoil removal, removal of bauxite ore from a mine pit and transporting the ore to a processing facility;
-wherein bauxite ore is beneficiated into an enriched bauxite fraction and a tailings fraction for alumina production in a refinery, wherein the tailings fraction is to be stored or deposited,
-and wherein the land reclamation portion is performed in a production area and comprises rehabilitation by,
-drying the tailings fraction to a solids content of 60% or more,
-and wherein the dried tailings fraction is permanently backfilled into the mining pit,
-before or together with the land reclamation step.
Brief description of the drawings
In the following, the invention shall be further described by way of examples and figures, wherein;
figure 1 illustrates the main operations of a prior art surface mining method,
figure 2 shows a photograph of an RP1 tailings dam,
figure 3 shows a process for dehumidifying tailings,
figure 4 shows the final configuration of the overall plan of palagomish tailings prior to dry tailing backfilling engineering,
figure 5 shows the proposed method performed at a mine pit.
Detailed Description
Referring to fig. 1, the mining method includes sequential cyclical operations: plant inhibition, topsoil removal, ore removal and transportation, beneficiation, land reclamation.
Crushed Raw Ore (ROM) of paregomir supplied to a beneficiation plant will typically present a moisture content of between 9% and 12% and the following particle size and chemical characteristics:
particle size determination method
81% to 90% passing sieve 3 "(76 mm)
32% to 38% passing sieve 20# (0.85 mm)
Passing 25% to 32% through sieve 400# (0.038 mm)
Chemical quality
Useful Al2O 3-ranges are 36.90% -41.38
The range of the reactive SiO 2-is 7.77 to 10.67 percent
The total Al2O 3-range is 48.12-50.68%
The total SiO 2-range is 9.78% -12.76%
The total Fe2O 3-range is 9.60-12.69%
The total TiO 2-range is 1.79-2.06%
The ignition loss-range is 24.27-26.27%
The bauxite beneficiation cycle of palagomirnas comprises three main classification steps to separate the coarser fraction with the highest gibbsite content from the finer fraction where most kaolin is present. The first step is carried out on a sieve, where the thicker fraction becomes the milled product. The passing fraction was fed to a pair of series connected cyclone banks (batteries). The underflow from the cyclone was fed to a ball mill and turned into product, while the fines were pumped into the third classification stage using 2 cyclones. The coarser fraction of this last stage also becomes product, while the overflow is tailings.
The palagomi-na tailings will typically exhibit the following particle size and chemical characteristics:
particle size determination method
Passing 100% through sieve 20# (0.85 mm)
90 to 98 percent of the mixture passes through a sieve 400# (0.038 mm)
Chemical quality
The range of available Al2O 3-is 18.02% -19.83%
The range of the reactive SiO 2-is 20.29 percent to 21.97 percent
The total Al2O 3-range is 38-42%
The total SiO 2-range is 21.69-23.69%
The total Fe2O 3-range is 12.10% -14.94%
The total TiO 2-range is 1.90-2.10%
The ignition loss-range is 18 percent to 20 percent
Since beneficiation consists mainly of particle size classification and does not involve any chemical processes, the skilled person can notice: except for the finer, the tailings do not differ much from the ROM chemically. As a result, the para-agonastine tailings are classified as chemically inert. Furthermore, after dehumidification at the dam, the tailings may reach a moisture content of between 18% and 40%.
The general project of paregomir tailings is to establish final and permanent disposal of the tailings in dams prior to dry backfilling engineering of the tailings. Fig. 2 shows a photograph of paragomians RP1, the tailings storage dam currently in operation.
The RP1 dam is designed so that the geometry of the quadrants (quatrarts), the position of their decantation system and the spacing between the valves allow the tailings to dry properly. The total area of RP1 is about 300 hectares and it contains 142 valves spaced from each other by between 75 and 100 meters.
The RP1 dam drainage system contains 4 spillways, the purpose of which is to drive out rain water and water released from the tailings, thereby assisting in the drying of the tailings. The overflow channel is connected to a transfer channel which in turn will flow to the water purification tank.
RP1 dams are designed based on the following geotechnical properties of the tailings:
specific gravity (Gs) =2.68 of tailings
Average solids content at disposal (by weight) =35%
Final solids content (by weight) =60%
Density of tailings =1.27t/m at disposal 3
Density of tailings after drying =1.60t/m 3
Currently, the disposal method used in RP1 consists of disposing thickened tailings having an average solids content of 35% in a layer of about 50cm that is subsequently exposed to sunlight for drying, allowing the tailings to reach a 60% solids content. Alternate dispositions between the four quadrants allow sufficient sun exposure time for tailings dehumidification. Figure 3 shows a tailings dehumidification process.
At the end of its useful life, estimated to occur in 2021, an expansion of storage capacity will occur. This will occur continuously by building new handling quadrants, i.e. RP2 to RP8, and by additionally raising the bank. Fig. 4 shows the final configuration of the overall plan of the palagomish tailings before dry tailing backfilling engineering.
The tailings population planning is divided into 11 construction stages, where the construction of the initial embankment of the RP1 dam is the first and thus completed. The remaining 10 construction stages will be built over a span of 20 years and provide about 126Mm over an area of 854 hectares 3 The method is used for tailing disposal. The dam will be raised up to a height of 14 m. The estimated capital cost of building the remaining 10 stages is 8 billion dollars.
The main concept proposed for the tailings dry backfilling project at para-gaminas is to use the current tailings storage facility RP1 for drying the tailings-achieving at least 60% solids-and mechanically removing and transporting the tailings therefrom for final disposal at the mine pit.
The RP1 dam is a perfect fit for this task. The internal separation of the dam in the four major quadrants will allow tailings removal and disposal to occur simultaneously, thus having no major impact on normal operation.
A minimum solids content of 60% is determined to improve the productivity of mechanical removal of tailings from the dam and disposal at the pit. Furthermore, this solids content optimizes the volumetric utilization at the pit.
Tailings removal occurs through the use of mining operations equipment such as wheel loaders, excavators, and trucks. Upon removal from the dam, the tailings are transported for disposal into existing pits in a manner similar to that currently used for topsoil disposal. This approach completely eliminates the need to build new dams or further raise existing dams. Figure 5 shows the proposed method performed at a mine pit.
As the skilled person can note from fig. 5, an offset of 5 metres is allowed between one tailing layer and the next to allow rainwater to seep between the tailing layers-as the tailings exhibit very low permeability-and so do not affect the groundwater level replenishment.
According to the present invention, it is shown that bauxite can be obtained only by using solar energy, i.e. without the need for filtration or separate dryingInertia ofVery low moisture content of the tailings.
Hereby, a more feasible mining may be achieved, and in addition less energy for drying and transport will be required.
The process allows for backfilling of tailings with moisture as low as 15%. Low moisture can restore the mined area to its original topography-high moisture will not allow such a process and will therefore result in a change in the topography of the restored land when compared to the original.
Volume expansion
When excavating a natural formation (e.g., a mine), the soil, which was previously in a state of compaction, will undergo a volumetric expansion. Thus, it is difficult to recover everything removed from it into the "hole".
Since the topsoil layer can be much larger than the original bauxite layer, this will cause problems for tailings backfilling, i.e. the topsoil layer occupies almost all the available volume.
The solution proposed by the applicant solves this problem by drying the tailings to a very high solids content (or very low moisture). Although a minimum solids content of 60% has been demonstrated in one of the applicant's mines, this solution has been able to provide a solids content of greater than 80%.
The 80% solids tailings will occupy about 4 times less space than the 35% solids tailings (the original solids content at disposal). This reduction in volume of the tailings-caused by its dehumidification-will allow the tailings to backfill into the pit, taking up very little space.
Thus, even when the volumetric expansion of the topsoil layer is considered, backfilling can occur and restore the ground to its original topography. Restoration of the land to its original topography facilitates a more sustainable mining process as it promotes environmental restoration and reduces the aesthetic impact of the mine.
Additional benefits of the invention
Although this process may appear obvious to the skilled person, the net volume of tailings produced in mining-in the order of 450 million tonnes of tailings per year in the mine-makes it extremely difficult to find a solution for drying, transporting and backfilling the tailings into a pit, and the tailings are typically deposited in a dam or the like.
By the method of the invention, savings in export to system operation can be achieved, for example, by utilizing empty car capacity returned from a bauxite beneficiation plant for transporting tailings for backfill. This will also reduce the CO2 footprint of operation.
Furthermore, the process of the invention allows for backfilling of large quantities of tailings. This is related to the low moisture of the tailings due to drying of the tailings by solar energy.
The claims (modification according to treaty clause 19)
1. A method for long term management of ore, wherein the mining of bauxite ore from a pit in a continuous steady state manner comprises the steps of;
a) The inhibition of plants is carried out by the plants,
b) The surface soil layer is removed, and the soil layer is removed,
c) Bauxite ore is removed and transported to an ore processing facility,
d) Bauxite ore is beneficiated into an enriched bauxite fraction for alumina production in a refinery and a tailings fraction to be stored or deposited,
e) The land restoration carried out in the mining area,
f) The rehabilitation that is carried out in the mining area,
wherein the content of the first and second substances,
g) Drying the tailings fraction of step d) to a solids content sum of 60% or more only by using solar energy;
h) Permanently backfilling the dried tailings according to step g) into the pit before or together with step e).
2. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
wherein
The tailings fraction of step g) may have a moisture content as low as 18%.
3. The method as set forth in claim 1, wherein,
wherein
The tailings fraction of step (d) will typically exhibit the following particle size and chemical characteristics:
particle size determination method
Passing 100% through sieve 20# (0.85 mm)
90 to 98 percent of the mixture passes through a sieve 400# (0.038 mm)
Chemical quality
The range of available Al2O 3-is 18.02% -19.83%
The range of the reactive SiO 2-is 20.29 percent to 21.97 percent
The total Al2O 3-range is 38-42%
The total SiO 2-range is 21.69-23.69%
The total Fe2O 3-range is 12.10-14.94%
The total TiO 2-range is 1.90-2.10%
The ignition loss-range is 18% -20%.
4. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
wherein
The tailings fraction of step (d) is chemically inert and chemically unchanged with respect to mined run-of-mine (ROM) ore.
5. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
wherein
The tailings fraction of step (d) is significantly finer relative to the particle size distribution of the run-of-mine (ROM) ore.
6. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
wherein
The backfilling in step (h) is performed at an offset of several meters for drainage purposes.
7. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
wherein
The bauxite is surface mined in a 25 meter wide section and the backfilling in step (h) is conducted with an offset of five meters and the backfilling of the tailings is conducted in a 20 meter wide section.
8. System for long-term management of tailings produced during a bauxite mining process for surface mining bauxite ore in a continuous steady-state manner by means of steps a) -h) according to claim 1,
wherein the content of the first and second substances,
the system comprises a tailings drying facility capable of drying the tailings fraction according to step (d) to a solids content of 60% or more.
9. The system of claim 7, wherein the first and second sensors are arranged in a single package,
wherein
Drying the tailings fraction of step (d) to achieve a moisture content of 40% or less.
10. The system of claim 7, wherein the first and second sensors are arranged in a single package,
wherein
The tailings fraction is chemically inert and dried to a level for sustainable backfilling and storage in the mining pit.
Claims (10)
1. A method for long term management of ore, wherein the mining of bauxite ore from a pit in a continuous steady state manner comprises the steps of;
a) The inhibition of plants is carried out by the plants,
b) The top soil layer is removed, and then the soil layer is removed,
c) Bauxite ore is removed and transported to an ore processing facility,
d) Bauxite is beneficiated into an enriched bauxite fraction for alumina production in a refinery and a tailings fraction to be stored or deposited,
e) The land restoration carried out in the mining area,
f) The rehabilitation that is carried out in the production area,
wherein the content of the first and second substances,
g) Drying the tailings fraction of step d) to a solids content of 60% or greater and;
h) Permanently backfilling the dried tailings according to step g) into the pit before or together with step e).
2. The method as set forth in claim 1, wherein,
wherein
The tailings fraction of step g) may have a moisture content as low as 18%.
3. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
wherein
The tailings fraction of step (d) will typically exhibit the following particle size and chemical characteristics:
particle size determination method
Passing 100% through sieve 20# (0.85 mm)
90 to 98 percent of the mixture passes through a sieve 400# (0.038 mm)
Chemical quality
The range of available Al2O 3-is 18.02% -19.83%
The reactive SiO 2-range is 20.29-21.97%
The total Al2O 3-range is 38-42%
The total SiO 2-range is 21.69-23.69%
The total Fe2O 3-range is 12.10-14.94%
The total TiO 2-range is 1.90-2.10%
The ignition loss-range is 18% -20%.
4. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
wherein
The tailings fraction of step (d) is chemically inert and chemically unchanged with respect to mined run-of-mine (ROM) ore.
5. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
wherein
The tailings fraction of step (d) is significantly finer relative to the particle size distribution of the run-of-mine (ROM) ore.
6. The method as set forth in claim 1, wherein,
wherein
The backfilling in step (h) is performed at an offset of several meters for drainage purposes.
7. The method as set forth in claim 1, wherein,
wherein
The bauxite was surface mined in a 25 meter wide section and the backfilling in step (h) was carried out with an offset of five meters and the backfilling of the tailings was carried out in a 20 meter wide section.
8. System for long-term management of tailings produced during a bauxite mining process for surface mining bauxite ore in a continuous steady-state manner by means of steps a) -h) according to claim 1,
wherein the content of the first and second substances,
the system comprises a tailings drying facility capable of drying the tailings fraction according to step (d) to a solids content of 60% or more.
9. The system as set forth in claim 7, wherein,
wherein
Drying the tailings fraction of step (d) to achieve a moisture content of 40% or less.
10. The system as set forth in claim 7, wherein,
wherein
The tailings fraction is chemically inert and dried to a level for sustainable backfilling and storage in the mining pit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20200292A NO20200292A1 (en) | 2020-03-11 | 2020-03-11 | Method and System for Long-Term Management of Bauxite Mining Tailings |
| NO20200292 | 2020-03-11 | ||
| PCT/EP2021/055867 WO2021180689A1 (en) | 2020-03-11 | 2021-03-09 | Method and system for long-term management of bauxite mining tailings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115244267A true CN115244267A (en) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180019244.2A Pending CN115244267A (en) | 2020-03-11 | 2021-03-09 | Method and system for long-term management of bauxite mining tailings |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN115244267A (en) |
| AU (1) | AU2021236265A1 (en) |
| BR (1) | BR112022017056A2 (en) |
| NO (1) | NO20200292A1 (en) |
| WO (1) | WO2021180689A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263460B (en) * | 2021-12-06 | 2023-11-17 | 山东金岭矿业股份有限公司 | Stoping method for mountain-side tailing pond |
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| US4101333A (en) * | 1976-08-19 | 1978-07-18 | Joy Manufacturing Company | Method of mine backfilling and material therefor |
| SU1219719A1 (en) * | 1984-07-30 | 1986-03-23 | Северный научно-исследовательский институт гидротехники и мелиорации | Land reclamation method |
| US4611951A (en) * | 1985-10-07 | 1986-09-16 | American Cyanamid Company | Process for reclamation of excavated mine sites |
| SU1693243A1 (en) * | 1989-12-14 | 1991-11-23 | Днепропетровский горный институт им.Артема | Method of reclamation of tailing storages |
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| Publication number | Publication date |
|---|---|
| BR112022017056A2 (en) | 2022-11-16 |
| NO20200292A1 (en) | 2021-09-13 |
| WO2021180689A1 (en) | 2021-09-16 |
| AU2021236265A1 (en) | 2022-08-25 |
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