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WO2016017032A1 - Procédé pour la fabrication de concentré et système pour la fabrication de concentré - Google Patents

Procédé pour la fabrication de concentré et système pour la fabrication de concentré Download PDF

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Publication number
WO2016017032A1
WO2016017032A1 PCT/JP2014/070377 JP2014070377W WO2016017032A1 WO 2016017032 A1 WO2016017032 A1 WO 2016017032A1 JP 2014070377 W JP2014070377 W JP 2014070377W WO 2016017032 A1 WO2016017032 A1 WO 2016017032A1
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WO
WIPO (PCT)
Prior art keywords
water
mineral
mixed
floating
mixed water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/070377
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English (en)
Japanese (ja)
Inventor
威一 中村
達 ▲高▼橋
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Japan Oil Gas and Metals National Corp
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Japan Oil Gas and Metals National Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to PCT/JP2014/070377 priority Critical patent/WO2016017032A1/fr
Priority to JP2014561200A priority patent/JP5754697B1/ja
Publication of WO2016017032A1 publication Critical patent/WO2016017032A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation 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
    • 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
    • C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical 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
    • C22B34/00—Obtaining refractory metals
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/36—Obtaining tungsten
    • 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

Definitions

  • the present invention relates to a concentrate manufacturing method and concentrate manufacturing system for manufacturing concentrate by flotation.
  • Patent Document 1 discloses a method for producing titanium dioxide concentrate by flotation from titanium dioxide ore.
  • Non-Patent Document 1 discloses a method for producing tungsten concentrate from a tungsten ore by flotation.
  • FIG. 4 is a diagram showing the steps of the conventional concentrate manufacturing method disclosed in Non-Patent Document 1.
  • a first flotation process deulfurization flotation process
  • tungsten flotation process tungsten flotation process
  • a sulfide collector for floating sulfide is used
  • an oxide collector for floating oxide is used.
  • the removed sulfide and finally the remaining tailings are sent to the tailings dam for processing.
  • the tap water collected after the solid matter is precipitated in the tailings dam is reused in the flotation process.
  • an oxide collector for suspending the oxide remains. Therefore, in the first flotation process in which the sulfide is removed by flotation, if the recovered water is used, part of the oxide floats and is removed in the first flotation process. As a result, the problem that the actual yield of an oxide falls arises.
  • an object of the present invention is to provide a concentrate manufacturing method and concentrate manufacturing system capable of improving the actual yield while suppressing the amount of water used in the flotation process.
  • the concentrate manufacturing method which concerns on the 1st aspect of this invention is the 1st mixed water production
  • the first floating mineral (for example, sulfide flotation flotation) contained in the first mixed water, the first sedimentation mineral (for example, sulfide flotation tailings), and the first filtered water are separated.
  • 1st separation process 2nd mixed water production
  • a second floating mineral for example, scheelite concentrate
  • a second sedimentary mineral for example, oxide flotation tailings
  • a part of the first mixed water is passed through a first floating mineral separation unit (for example, a filter 142), and the first floating mineral and the first filtered water contained in the first mixed water
  • the first floating mineral separation step of separating the first floating mineral and the other part of the first mixed water are passed through a first settled mineral separation unit (for example, a filter 144) to be included in the first mixed water.
  • a part of the second mixed water is passed through a second floating mineral separation unit (for example, a filter 262), and the second floating mineral contained in the second mixed water and the second filtration are filtered.
  • a second floating mineral separation step that separates into water, and another part of the second mixed water is passed through a second settled mineral separation unit (for example, a filter 234) to be included in the second mixed water.
  • the second floating mineral separation step includes a step of flotating a mineral containing the second floating mineral from the second mixed water at a first temperature, and a second temperature higher than the first temperature.
  • the first separation step water obtained by mixing the first filtered water and water obtained from the outside is used as the first water, and in the second separation step, the water is obtained from the second filtered water and the outside. Water mixed with water may be used as the second water.
  • the first floating mineral is generated by adding the first collection agent to the first mixed water
  • the first collection agent is different from the first collection agent.
  • the second floating mineral may be generated by adding a second collection agent to the second mixed water.
  • the first floating mineral is generated by reacting the first collection agent containing the first organic compound with the sulfide contained in the ore
  • the second floating mineral may be generated by reacting the second collection agent containing a second organic compound with an oxide contained in the first precipitated mineral.
  • the above concentrate manufacturing method may further include a step of dry stacking by removing water contained in the second sedimentary mineral.
  • the method may further include a step of mixing the first floating mineral with cement or fly ash to generate a solid material, and a step of performing the dry stack on the solid material.
  • the concentrate manufacturing system which concerns on the 2nd aspect of this invention is the 1st floating mineral, the 1st sedimentation mineral, and the 1st filtration which mixed the 1st water and the powdered ore.
  • a first separation part that separates into water, a second mixed water obtained by mixing the second water different from the first water and the first precipitated mineral, a second floating mineral, a second precipitated mineral,
  • a second separation unit that separates the second filtered water; a first water storage unit that stores the first filtered water; and a second water storage unit that stores the second filtered water.
  • the second separator uses the water in the second water reservoir as the second water.
  • FIG. 1 is a diagram showing a flow of a concentrate manufacturing method according to the present embodiment.
  • a solid line indicates a mineral flow
  • a broken line indicates a water flow.
  • the scheelite that is a kind of tungstate mineral is selected from the tungsten ore will be described, but the present invention can also be applied to the case where the tin, titanium, and rare earth are selected.
  • the first collection agent containing the powdered tungsten ore, the first water, and the first organic compound is placed in the conditioning tank.
  • the first mixed water generation process for generating the first slurry a1 by stirring is performed (S1).
  • 1st water is water containing the fresh water acquired from the outside, and the 1st filtered water mentioned later.
  • Processing is executed (S2).
  • a sulfide flotation process is executed (S21).
  • air is injected after the first slurry a1 is put into the flotation processing unit that performs the sulfide flotation process.
  • ethyl xanthate can be used as the first collection agent.
  • the first slurry a2 containing the first precipitated mineral that has been deposited in the lower part of the flotation processing unit is passed through a filter to separate the first precipitated mineral and the first filtered water other than the first precipitated mineral. Processing is executed (S22).
  • the first slurry a3 containing the first floating mineral floating in the flotation processing unit is passed through a filter, and the first floating mineral and the first filtered water other than the first floating mineral and (S23)
  • the filtering process to be separated is performed.
  • the first floating mineral is a sulfide contained in the tungsten ore and does not need to be recovered, and is discarded. Details of the disposal method of the first floating mineral will be described later.
  • the first filtered water separated in S22 and S23 is reused as part of the first water used in S1.
  • a processing for extracting scheelite from the first sedimentary mineral is executed.
  • the second mixing agent that produces the second slurry b1 by putting and stirring the second collection agent containing the first precipitated mineral, the second water, and the second organic compound.
  • a water generation process is performed (S3).
  • the 2nd water is water which consists of below-mentioned 2nd filtered water, and is water different from 1st water. Note that the second water may include fresh water acquired from the outside.
  • the 2nd separation process which isolate
  • an oxide flotation process is executed (S41).
  • oxide flotation process air is injected after the second slurry b1 is put into the flotation process unit.
  • oxidized paraffin can be used as the second collection agent. By doing in this way, it will be in the state where the oxide contained in the 2nd slurry b1 reacts with the 2nd collection agent, and floats. And components other than an oxide settle in the lower part of a flotation process part as a 2nd sedimentation mineral.
  • the second slurry b2 containing the second settled mineral that has been deposited in the lower part of the flotation processing unit is passed through a filter to be separated into the second settled mineral and the second filtered water other than the second settled mineral. Processing is executed (S42). Since the second sedimentary mineral is a tailing that does not need to be recovered, a dry stack process is performed after dehydration (S43). Details of the dry stack process will be described later.
  • the second slurry b3 containing the second floating mineral floating in the flotation processing unit is passed through a filter, and the second floating mineral and the second filtered water other than the second floating mineral (S43).
  • the second floating mineral is scheelite concentrate to be collected.
  • separated by S42 and S43 is reused as a part of 2nd water used in S3.
  • the first filtered water is reused as part of the first water used in the first mixed water generation process (S1) and the first separation process (S2).
  • the 2 filtered water is reused as part of the second water used in the second mixed water generation process (S3) and the second separation process (S4).
  • the first filtered water Since the first filtered water is separated from the first precipitated mineral and the first floating mineral using a filter, the first filtered water does not contain the first precipitated mineral and the first floating mineral. Therefore, it can be reused together with fresh water obtained from the outside. Moreover, since the 2nd filtered water is isolate
  • the second filtered water contains the second collection agent containing the second organic compound for floating the oxide when the oxide flotation process is performed. If the second filtered water containing the second collection agent is mixed with the first filtered water, a part of the oxide floats together with the sulfide in the first separation treatment, and the oxidation to be recovered. Part of the material will be discarded as part of the sulfide flotation tailings. Therefore, in the present embodiment, the second filtered water is reused only as the second water used in the second mixed water generation process S3 and the second separation process S4 without mixing with the first filtered water. Yes.
  • dry stack processing is executed in the following steps.
  • the first floating mineral produced in the first separation treatment is mixed with cement or fly ash to produce a solid.
  • cement or fly ash By solidifying the first floating mineral under strong alkali, it is possible to prevent the first floating mineral containing sulfide from reacting with oxygen in the air and generating sulfuric acid water that leads to environmental problems.
  • Solidified first floating mineral is used as a liner on the bottom of the dry stack. Specifically, the generated solid is placed in a dry stack area where dry stack processing is performed. Then, the dry stack process is executed by stacking the cake obtained by dehydrating the second precipitated mineral on the solid matter placed in the dry stack area. By rolling the cake stacked on the solid material generated from the first floating mineral with a roller or the like, the penetration of rainwater is prevented and the sediment is stabilized.
  • FIG.2 and FIG.3 is a figure which shows the structure of the concentrate manufacturing system for performing said concentrate manufacturing method.
  • FIG. 2 is a diagram showing a configuration of the sulfide flotation apparatus 1 for executing the sulfide flotation process in the concentrate manufacturing system.
  • FIG. 3 is a diagram showing a configuration of the oxide flotation apparatus 2 for executing the oxide flotation process in the concentrate manufacturing system.
  • the broken line in FIG. 2 shows the flow of the 1st filtered water
  • the broken line in FIG. 3 shows the flow of the 2nd filtered water.
  • the sulfide flotation device 1 includes a first water distribution tower 11, a grinding unit 12, a conditioning tank 13, a first separation unit 14, and a first water tank 15.
  • the 1st water distribution tower 11 is comprised from the tank and water distribution pipe which supply the new water used in the sulfide flotation apparatus 1.
  • FIG. When the first filtered water supplied from the first water tank 15 is insufficient, the first water distribution tower 11 supplies new water corresponding to the insufficient amount.
  • the grinding unit 12 is, for example, a ball mill.
  • the grinding unit 12 pulverizes the ore concentrate produced by the concentrate production system to form powder.
  • the conditioning tank 13 mixes the 1st filtered water supplied from the 1st water storage tank 15, the raw ore powdered in the grinding part 12, and the 1st collection agent containing a 1st organic compound. This is a tank for producing a slurry. When the water supplied from the first water storage tank 15 is insufficient, new water supplied from the first water distribution tower 11 may be put into the conditioning tank 13.
  • the 1st separation part 14 separates sulfide, things other than sulfide, and the 1st filtered water by performing sulfide flotation processing.
  • the first separation unit 14 includes a flotation processing unit 141, a filter 142, a thickener 143, and a filter 144.
  • the flotation processing unit 141 is a flotation machine for performing sulfide flotation processing. When air is injected after the slurry generated in the conditioning tank 13 is put into the flotation processing unit 141, sulfides in the slurry reacted with the first collection agent float.
  • the filter 142 separates the sulfide flotation flotation floating in the slurry from the slurry on the upper side of the flotation processing unit 141.
  • the filter 142 is, for example, a filter press (pressure filter) including a filter cloth having holes smaller than the particle diameter of sulfide flotation flotation and larger than water molecules.
  • the sulfide flotation flotation separated in the filter 142 is solidified.
  • the slurry after the filter 142 separates the sulfide flotation flotation is sent to the thickener 143.
  • the thickener 143 performs sedimentation concentration treatment of the lower slurry of the flotation processing unit 141 and the liquid sent from the filter 142 to increase the solid concentration of the slurry.
  • the thickener 143 increases, for example, the solid concentration of the slurry from 35% to 65%.
  • the overflow (O / F) whose concentration has increased in the thickener 143 is sent to the first water tank 15.
  • the underflow (U / F) of the thickener 143 is sent to the filter 144.
  • the filter 144 separates the settled sulfide flotation tailing from the underflow of the thickener 143.
  • the filter 142 is, for example, a filter press including a filter cloth having holes smaller than the particle size of the sulfide floating tailings and larger than water molecules.
  • the filter 144 may be made of the same filter cloth as the filter 142. Since the sulfide flotation tailings separated by the filter 144 contain oxides, they are sent to the oxide flotation apparatus 2. Further, the liquid after the filter 144 separates the sulfide flotation tailings is sent to the first water tank 15.
  • the first water tank 15 stores the liquid sent from the thickener 143 and the filter 144 as first filtered water.
  • the first water storage tank 15 distributes the first filtered water stored in the conditioning tank 13 by a necessary amount. Since the first water storage tank 15 stores the first filtered water and reuses the first filtered water, the amount of surplus water discharged from the tailings dam can be reduced.
  • the oxide flotation device 2 includes a second water distribution tower 21, a conditioning tank 22, a second separation unit 23, a second water storage tank 24, a conditioning tank 25, and a third separation unit 26.
  • the second water distribution tower 21 is composed of a tank for supplying fresh water used in the oxide flotation device 2 and a water distribution pipe. When the second filtered water supplied from the second water storage tank 24 is insufficient, the second water distribution tower 21 supplies new water corresponding to the insufficient amount.
  • the conditioning tank 22 includes a second filtered water supplied from the second water tank 24, a sulfide flotation tailing sent from the sulfide flotation device 1, and a second collection containing a second organic compound. It is a tank for producing
  • the second separation unit 23 separates the oxide, a component other than the oxide, and the second filtered water by performing an oxide flotation process at room temperature.
  • the second separation unit 23 includes a flotation processing unit 231, a thickener 232, a thickener 233, and a filter 234.
  • the flotation processing unit 231 is a flotation machine for performing oxide flotation processing.
  • oxide in the slurry that has reacted with the second collection agent floats.
  • the thickener 232 performs sedimentation concentration treatment of the slurry containing the oxide flotation flotation obtained in the flotation treatment unit 231 to increase the solid concentration of the slurry.
  • Thickener 232 for example, increases the solids concentration of the slurry from 40% to 70%.
  • the underflow whose concentration has increased in the thickener 232 includes scheelite and is sent to the third separation unit 26 in order to improve the quality of scheelite.
  • the overflow in the thickener 232 is stored in the second water tank 24 as the second filtered water.
  • the thickener 233 performs sedimentation concentration treatment of the slurry containing the tailings in the flotation processing unit 231 and the slurry containing the tailings in the flotation processing unit 261 described later to increase the solid concentration of the slurry.
  • the overflow of the thickener 233 is stored in the second water tank 24 as the second filtered water. Further, the slurry that is the underflow of the thickener 233 is sent to the filter 234.
  • Filter 234 separates oxide flotation tailings from thickener 233 underflow.
  • the filter 234 is a filter press including a filter cloth having holes smaller than the particle diameter of oxide flotation tailings and larger than water molecules, for example.
  • the oxide flotation tailings separated by the filter 234 are dry-stacked after dehydration. The water remaining after the filter 234 separates the oxide flotation tailings is stored in the second water tank 24 as second filtered water.
  • the second water tank 24 stores the liquid sent from the thickener 232, thickener 233, filter 234, and filter 262 as second filtered water.
  • the second water storage tank 24 distributes the stored second filtered water in the conditioning tank 22 and the conditioning tank 25 by a necessary amount. Since the second water storage tank 24 stores the second filtered water and reuses the second filtered water, the amount of surplus water discharged from the tailings dam can be reduced.
  • the conditioning tank 25 mixes the second filtered water supplied from the second water tank 24, the scheelite flotation flotation sent from the thickener 232, and the second collection agent containing the second organic compound. It is a tank for producing
  • the third separation unit 26 separates scheelite concentrate and second filtered water by performing an oxide flotation process at a temperature higher than that of the second separation unit 23 (for example, 65 ° C. to 90 ° C.).
  • the third separation unit 26 can improve the selectivity of adsorption of the second organic compound onto the scheelite by performing the oxide flotation process at a high temperature, so that the higher-grade scheelite is taken out. Is possible.
  • the third separation unit 26 includes a flotation processing unit 261 and a filter 262.
  • the flotation processing unit 261 is a flotation machine for performing oxide flotation processing. When air is injected after the slurry generated in the conditioning tank 25 is heated and then put into the flotation processing unit 261, the oxide in the slurry that has reacted with the second collection agent floats.
  • the filter 262 separates scheelite concentrate that is an oxide floating in the flotation processing unit 261.
  • the filter 262 is, for example, a filter press including a filter cloth having holes smaller than the particle size of scheelite concentrate and larger than water molecules.
  • the water remaining after the filter 262 separates the scheelite concentrate is stored in the second water tank 24 as second filtered water.
  • the oxide flotation apparatus 2 a large amount of scheelite is recovered by performing the oxide flotation process at room temperature in the second separation unit 23, and then the oxide flotation device at a high temperature in the third separation unit 26. By performing the selection process, the quality of the collected scheelite can be improved.
  • the sulfide flotation tailings and the first filtered water are separated through the filter 144 in the sulfide flotation device 1 that recovers sulfides from the raw ore.
  • the oxide flotation apparatus 2 which collects oxides
  • the oxide flotation tailing, scheelite concentrate, and second filtered water are separated through the filter 234 and the filter 263. Accordingly, the first filtered water and the second filtered water do not contain impurities and can be reused for the generation of slurry in the conditioning tank 13, the conditioning tank 22 and the conditioning tank 25.
  • the excess water can be prevented from being discharged.
  • the influence on the environment can also be reduced in that the second filtered water containing fluorine is not discharged.
  • the amount of new water obtained from the outside can be suppressed. Therefore, the concentrate manufacturing cost in the dry area where the cost of water is high can be reduced.
  • the second filtered water containing the second collection agent used for the flotation treatment of the oxide is not used in the sulfide flotation device 1 while reusing the water used for the flotation, the sulfide In the flotation apparatus 1, a part of the oxide floats and is not treated as tailings. Accordingly, the actual yield of the oxide can be improved.
  • the oxide flotation apparatus 2 after the oxide flotation process is performed at room temperature in the second separation unit 23, the oxide flotation process is performed at high temperature in the third separation unit 26. By doing so, it is possible to recover high-grade scheelite concentrate.
  • the sulfide flotation flotation generated in the sulfide flotation apparatus 1 in the sulfide flotation apparatus 1 is solidified and used as a liner on the bottom of the dry stack, and the oxide flotation process in the oxide flotation apparatus 2 Oxide flotation tailings generated in the process of dry stacking.
  • filter presses are exemplified as the filters 142, 144, 234, and 262.
  • these filters may be disk filters.
  • the oxide flotation apparatus 2 is provided with the 2nd separation part 23 and the 3rd separation part 26, The flotation process in the 2nd separation part 23, and the flotation process in the 3rd separation part 26
  • the present invention is not limited to this.
  • the second separation unit 23 may include a filter having a function equivalent to that of the filter 262, and the scheelite concentrate may be separated by the second separation unit 23.
  • the oxide flotation apparatus 2 demonstrated the structure provided with the 2nd water distribution tower 21, the oxide flotation apparatus 2 is not equipped with the 2nd water distribution tower 21, but the conditioning tank 22 is equipped with a 2nd New water may be supplied from one water distribution tower 11.
  • SYMBOLS 1 Sulfide flotation apparatus, 2 ... Oxide flotation apparatus, 11 ... 1st water tower, 12 ... Grinding part, 13 ... Conditioning tank, 14 ... 1st Separation part, 15 ... 1st water tank, 21 ... 2nd water distribution tower, 22 ... Conditioning tank, 23 ... 2nd separation part, 24 ... 2nd water tank, 25 ... Conditioning tank, 26 ... third separation unit, 141 ... flotation processing unit, 142 ... filter, 143 ... thickener, 144 ... filter, 231 ... flotation processing unit, 232 .. thickener, 2324 ... thickener, 2326 ... filter, 261 ... flotation processing unit, 262 ... filter, 263 ... filter

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Abstract

La présente invention concerne un procédé de fabrication de concentré, comprenant : une première étape (S1) de production de mélange aqueux consistant à produire un premier mélange aqueux qui est un mélange de première eau et de minerai pulvérulent ; une première étape de séparation (S2) consistant à séparer le premier mélange aqueux en un premier minerai flottant, un premier minerai sédimenté et un premier filtrat aqueux, qui sont contenus dans le premier mélange aqueux, en amenant le premier mélange aqueux à passer dans une première unité de séparation ; une seconde étape (S3) de production de mélange aqueux consistant à produire un second mélange aqueux qui est un mélange de seconde eau différente de la première eau et du premier minerai sédimenté ; et une seconde étape de séparation (S4) consistant à séparer le second mélange aqueux en second minerai flottant, second minerai sédimenté et second filtrat aqueux, qui sont contenus dans le second mélange aqueux, en amenant le second mélange aqueux à passer dans une seconde unité de séparation, le premier filtrat aqueux étant utilisé en tant que partie de la première eau dans la première étape de production de mélange aqueux et, de plus, le second filtrat aqueux étant utilisé en tant que partie de la seconde eau dans la seconde étape de production de mélange aqueux.
PCT/JP2014/070377 2014-08-01 2014-08-01 Procédé pour la fabrication de concentré et système pour la fabrication de concentré Ceased WO2016017032A1 (fr)

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PCT/JP2014/070377 WO2016017032A1 (fr) 2014-08-01 2014-08-01 Procédé pour la fabrication de concentré et système pour la fabrication de concentré
JP2014561200A JP5754697B1 (ja) 2014-08-01 2014-08-01 精鉱製造方法及び精鉱製造システム

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Cited By (1)

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CN107213981A (zh) * 2017-07-06 2017-09-29 湖南黄金洞矿业有限责任公司 一种超低伴生钨金矿金、钨综合选别方法

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Publication number Priority date Publication date Assignee Title
CN110624685B (zh) * 2019-10-14 2021-04-20 广东省资源综合利用研究所 一种稀土尾矿中集约化回收有价组分的方法

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JP2002248459A (ja) * 2001-02-26 2002-09-03 Dowa Mining Co Ltd 汚染土壌の浄化法および装置
JP2009050796A (ja) * 2007-08-27 2009-03-12 Taiheiyo Cement Corp カルシウム成分及び鉛成分を含有する微粉末の処理方法及び処理システム
WO2012137359A1 (fr) * 2011-04-07 2012-10-11 Ｊｆｅミネラル株式会社 Procédé de fabrication d'un concentré de dioxyde de titane

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Publication number Priority date Publication date Assignee Title
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JP2009050796A (ja) * 2007-08-27 2009-03-12 Taiheiyo Cement Corp カルシウム成分及び鉛成分を含有する微粉末の処理方法及び処理システム
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