CN109821649A - The method of fluorite is sorted in a kind of rare-earth tailing - Google Patents
The method of fluorite is sorted in a kind of rare-earth tailing Download PDFInfo
- Publication number
- CN109821649A CN109821649A CN201910099236.8A CN201910099236A CN109821649A CN 109821649 A CN109821649 A CN 109821649A CN 201910099236 A CN201910099236 A CN 201910099236A CN 109821649 A CN109821649 A CN 109821649A
- Authority
- CN
- China
- Prior art keywords
- fluorite
- thick
- grade
- dosage
- concentrate
- 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.)
- Pending
Links
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/60—Glass recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention discloses a kind of method that fluorite is sorted in rare-earth tailing, belongs to Ore Dressing Engineering field.Wherein the method includes the one smart table concentration of thick seven cleaner flotations-magnetic separation-one thick two of bulk flotation-fluorite, CaF may finally be obtained2The fluorite concentrate of grade 95%.The beneficiation method provided through the invention selects fluorite resource in rare-earth tailing to recycle Bayan Obo, produces high-quality fluorite concentrate, while having high economic value, is of great importance to environmental protection.
Description
Technical field
The invention belongs to Ore Dressing Engineering fields, and in particular to the method for fluorite is sorted in a kind of rare-earth tailing.
Background technique
The fluorite resource in China, other than single fluorite ore, there are many more Associated Fluorite resources.Baiyuneboite firefly
Stone reserves are very huge, belong to accompanying mineral deposit, CaF2Content is lower.Bayan Obo oxide ore selects firefly in the tailing after iron, rare earth
Stone is enriched with, CaF2For content in 20-25% or so, contained mineral species are more, and symbiosis is complicated, and disseminated grain size is thinner,
Main gangue mineral contained therein and fluorite physicochemical properties are very close, create great difficulties to ore dressing.With white clouds Hubei Province
Increasingly mature, requirement of the country to comprehensive utilization of resources of comprehensive recovery of iron, ore dressing of rare earth technology, emerging in rich oxide ore tailing
Industry is continuously increased high-grade fluorite demand, and the recycling of baiyuneboite fluorite resource becomes more and more important.It is obviously worth except having
Outside, the recycling of fluorite resource effectively avoids pollution of the fluorine-containing resource to soil in the wasting of resources and tailing, there is society's effect very well
Benefit.
Currently, with mine research institute, Baogang patent of invention, " one kind comprehensive reutilization Multifarious minerals from rare-earth tailing are provided
The ore-dressing technique in source " based on (Patent No. ZL201410319762.8), Bayan Obo Golconda mining company fluorite production line
Debugging is designed and built up according to the patent, but due to changing when original ore property is with small-scale test, gradually by
Oxide ore switchs to magnetic mine, meanwhile, previous stage rare-earth tailing can not reduce at the scene, and bulk flotation foam ore grinding is because of granularity mistake
Thin thickener is pressed rake and can not be started, and clay content is big in recirculated water, and influences containing hydroximic acid collecting agent Residuals, firefly
Stone flotation can not produce always CaF2The qualified fluorite concentrate of grade 95%.It is badly in need of a kind of novel fluorite sorting process.
" certain low-grade fluorite mine ore-dressing technique research " Cheng Jianguo et al. contains CaF to certain low-grade fluorite mine2For
25.20%, under conditions of grinding fineness -0.075mm content 70%, use sodium carbonate for pH regulator, conventional waterglass and
Acidified sodium silicate is inhibitor, oleic acid is collecting agent, selected by one roughing-rough concentrate primary cleaning desliming-five time, can
Obtaining yield is 15.93%, CaF2Grade 98.27%, the high-quality acid grade fluorite concentrate product 1 that the rate of recovery is 62.37%；In
Mine centralized processing, by triple cleaning, can obtain yield is 6.20%, CaF2Grade 82.73%, the rate of recovery 20.44%
Metallurgical grade fluorite concentrate product 2, fluorite overall recovery reaches 82.81%.
" Henan fluorite ore beneficiation test " Tian Jiangtao et al. to Henan fluorite ore valuable mineral disseminated grain size thickness not
Uniformly.Under the premise of guaranteeing certain grade, float test is carried out using conventional flotation medicament, has inquired into Treatment of Middling emphatically
Influence of the mode to grade and the rate of recovery.Studies have shown that Concentrated returning of middling, selected by 4 times containing the more rough concentrate of shale,
It can get ideal concentrate, improve the rate of recovery；Chats returns in proper order, casts out part shale chats, is conducive to purify flotation environment, obtain
It obtains compared with high-grade concentrate, but the rate of recovery is affected.
" Inner Mongol low-grade fluorite mine ore-dressing technique research " Gong Enmin et al. Inner Mongolia somewhere low-grade fluorite mine
Washability technical study is carried out, which is low fluorine, and high silicon, high carbon acid calcium class raw ore is selected in alkaline medium
Under process system, obtained using combined HS and modified water glass inhibitor by the single flotation flowsheet of " one slightly sweeps three essences "
It is 96.79% to fluorite concentrate grade, the rate of recovery 82.82%, product reaches state quality standard (G85690-85) level-one
Product.
" fluorite resource recovery test in Bayan Obo oxide ore tailing " Qian Shuhui, Li Hong waits people's Bayan Obo oxide ore quietly
Tailing carries out fluorite test, and ore properties are complicated in the sample ore, disseminated grain size is thin, sorting difficulty is larger.It is ground by test
Study carefully, using acidified sodium silicate and new inhibitor SY, through rare earth flotation-bulk flotation (1 thick 2 essence) ,-mix-froth is again
Mill-fluorite (1 thick 6 essence)-strong magnetic impurity removal process, has obtained containing CaF2For 95.62%, SiO2For 0.69%, CaCO3For
0.34%, the fluorite concentrate that the rate of recovery is 59.46%.
" fluorite technical study in Bayan Obo tailing " Tang Jiayan et al. is by a series of detections and test, for white
Cloud oborite, which selects iron and sorts the tailing after rare earth and propose two sections of mills, floats back into the process flow for receiving fluorite.The process and " white clouds
Fluorite resource recovery test in pile of stones, earth or grass oxide ore tailing " process used in document is extremely similar, and first segment controls grinding fineness -500
Mesh mass fraction is 60% or so, and using the process flow of 1 thick 2 essence, using SF-1# as collecting agent, waterglass is inhibitor, can be with
Efficiently separate silicate mineral and aluminosilicate mineral；Second segment controls -500 mesh mass fraction of grinding fineness 72% or so,
Using the process flow of 1 thick 6 essence, using SF-1# as collecting agent, acidified sodium silicate is inhibitor, and separation contains the gold such as barium, calcium, magnesium
Carbonate mineral, sulfate mineral and the phosphate mineral for belonging to element, have finally obtained CaF2Grade is 95.52%, the rate of recovery
For 60.6% fluorite concentrate.
In conclusion Cheng Jianguo, Tian Jiangtao, Gong Enmin and domestic mainstream processing of fluorspar ores technique are direct flotation, institute
It is mostly acidified sodium silicate with medicament, sodium carbonate is as pH regulator and gangue inhibitor, and fatty acid collecting agent is as firefly
Stone collecting agent, concentration times are slightly different depending on concentrate grade, are scanned process design and are slightly different to promote the rate of recovery.Money
Process used in refined intelligent and Tang Jiayan et al. is process used in patent of invention ZL201410319762.8, and Qian Shuhui etc. artificially should
Patent of invention inventor.Medicament used in Tang Jiayan et al. is also similar medicament.But currently, scene is in existing procedure and sets
Under standby, cycle water situation, the prior art can not be used used or similar medicament, to sub-elect CaF2The fluorite essence of grade 95%
Mine.
Summary of the invention
For the prior art there are one or more of problem, the present invention, which provides, sorts fluorite in a kind of rare-earth tailing
Method the described method comprises the following steps:
S1: bulk flotation
Bulk flotation is carried out to rare-earth tailing using a thick two cleaner flotations technique, floatation concentration is greater than 40%, obtains CaF2
50% or more bulk flotation concentrate of grade；
S2: fluorite
Fluorite, floatation concentration 40-50%, pH value are carried out to bulk flotation concentrate using a thick seven cleaner flotations technique
For 6.3-6.7, CaF is obtained286% or more fluorite of grade；
S3: magnetic separation
Magnetic separation is carried out to fluorite using magnetic field, obtains CaF288% or more fluorite magnetic concentrate of grade；
S4: table concentration
Table concentration is carried out to fluorite magnetic concentrate using one thick two smart gravity separation technology, obtains CaF2Grade is greater than 95%
Fluorite concentrate.
In step S1, using acidified sodium silicate as pH regulator, dosage 1.0- in a thick two cleaner flotations technique
1.3kg/t。
In step S1, using fatty acid collecting agent SF as collecting agent in a thick two cleaner flotations technique, dosage is
0.5-0.8kg/t。
In step S2, in a thick seven cleaner flotations technique, using acidified sodium silicate as pH regulator, dosage is for roughing
1.3-1.8kg/t, using sulfonate SY as inhibitor, dosage 0.9-1.3kg/t, using SF as collecting agent, dosage is
0.2-0.5kg/t。
In step S2, in a thick seven cleaner flotations technique, seven selected use SY are as inhibitor, dosage 30-
60g/t。
In step S3, the intensity in the magnetic field is 8000-10000 oersted.
In step S4, the shaking table use fine-mud shaker, pulp density 20%, stroke 10mm, 400 beats/min of jig frequency.
In step S4, the one thick two smart gravity separation technology is that primary cleaning is carried out to roughing chats product, in primary cleaning
Mineral products carry out selected for the second time.
Based on above technical scheme, the present invention is shaken by one thick two essence of thick seven cleaner flotations-magnetic separation-one of bulk flotation-fluorite
Bed reselecting method selects tailing to sort to dilute, available CaF2The fluorite concentrate of grade 95%.Compared with prior art, originally
Invention has the advantages that
1) in the used process of the present invention gravity treatment addition, fluorite not will receive hydroximic acid collecting agent in recirculated water
It influences, meanwhile, particulate mud is gone in tailing, so as to obtain CaF2The fluorite concentrate of grade 95%.
2) beneficiation method provided through the invention selects fluorite resource in rare-earth tailing to recycle Bayan Obo, raw
High-quality fluorite concentrate is produced, while there is high economic value, is of great importance to environmental protection.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the method flow schematic diagram that fluorite is sorted in rare-earth tailing provided by the invention.
Specific embodiment
Hereinafter, certain exemplary embodiments are simply just described.As one skilled in the art will recognize that
Like that, without departing from the spirit or scope of the present invention, described embodiment can be modified by various different modes.
Therefore, attached drawing and description are considered essentially illustrative rather than restrictive.
Below in conjunction with attached drawing, the present invention will be described in detail.
As shown in Figure 1, showing the method flow schematic diagram for sorting fluorite in rare-earth tailing provided by the invention, packet
It includes: bulk flotation, fluorite, magnetic separation and table concentration, wherein floatation concentration is greater than 40%, pH used for bulk flotation
Regulator is acidified sodium silicate, and dosage 1.0-1.3kg/t, collecting agent is fatty acid collecting agent SF, dosage 0.5-
0.8kg/t obtains CaF by a thick two cleaner flotations technique250% or more bulk flotation concentrate of grade.For fluorite, float
Concentration 40-50%, pH6.5 or so are selected, flotation flowsheet is one thick seven smart process flow.Roughing pH regulator is acidified sodium silicate,
Dosage is 1.3-1.8kg/t, and inhibitor is SY (sulfonate), dosage 0.9-1.3kg/t, collecting agent SF, dosage 0.2-
0.5kg/t, later seven times it is selected only use inhibitor SY, dosage 30-60g/t can finally obtain CaF286% or more firefly of grade
Stone flotation concentrate.For magnetic separation, magnetic field strength 8000-10000 oersted, by CaF obtained by magnetic separation288% or more firefly of grade
Stone concentrate.For table concentration, shaking table uses fine-mud shaker, pulp density 20%, stroke 10mm, and 400 beats/min of jig frequency, process
Using one thick two smart process, primary cleaning is carried out to roughing chats product, second of the progress of primary cleaning chats product selected, most
CaF is obtained eventually2Grade is greater than 95% fluorite concentrate.
Embodiment 1:
Select rare-earth tailing as raw material using Bayan Obo, by following steps:
Bulk flotation:
Floatation concentration is greater than 40%, and pH regulator used is acidified sodium silicate, and dosage 1.2kg/t, collecting agent is fat
Acid collector SF, dosage 0.7kg/t obtain CaF by a thick two cleaner flotations technique2The bulk flotation essence of grade 55%
Mine.
Fluorite:
Floatation concentration 45%, pH 6.5, flotation flowsheet are one thick seven smart process flow.Roughing pH regulator is acidifying water glass
Glass, dosage 1.6kg/t, inhibitor be SY (sulfonate), dosage 1.1kg/t, collecting agent SF, dosage 0.3kg/t, it
Afterwards seven times it is selected only use inhibitor SY, dosage 45g/t can finally obtain CaF2The fluorite of grade 86%.
Magnetic separation fluorite:
Magnetic field strength 8000-10000 oersted, by CaF obtained by magnetic separation288.32% fluorite concentrate of grade.
Table concentration:
After shaking table roughing, since rare earth grade is higher in raw ore, rare earth is well enriched with by shaking table rough concentrate, is shaken
In bed chats, fluorite is enriched with, and in shaking table tailing, particulate substance containing mud is run away.The thick chats k of shaking table carries out shaking table primary cleaning, obtains
To a smart chats n, equally, shaking table recleaning is carried out to one essence chats n of shaking table, finally obtains two essence chats x product of shaking table i.e.
CaF2The fluorite concentrate of grade 95.11%.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (8)
1. sorting the method for fluorite in a kind of rare-earth tailing, which is characterized in that the described method comprises the following steps:
S1: bulk flotation
Bulk flotation is carried out to rare-earth tailing using a thick two cleaner flotations technique, floatation concentration is greater than 40%, obtains CaF2Grade
50% or more bulk flotation concentrate；
S2: fluorite
Fluorite, floatation concentration 40-50% are carried out to bulk flotation concentrate using a thick seven cleaner flotations technique, pH value is
6.3-6.7 obtaining CaF286% or more fluorite of grade；
S3: magnetic separation
Magnetic separation is carried out to fluorite using magnetic field, obtains CaF288% or more fluorite magnetic concentrate of grade；
S4: table concentration
Table concentration is carried out to fluorite magnetic concentrate using one thick two smart gravity separation technology, obtains CaF2Grade is greater than 95% fluorite
Concentrate.
2. the method according to claim 1, wherein being used in a thick two cleaner flotations technique in step S1
Acidified sodium silicate is as pH regulator, dosage 1.0-1.3kg/t.
3. the method according to claim 1, wherein being used in a thick two cleaner flotations technique in step S1
Fatty acid collecting agent SF is as collecting agent, dosage 0.5-0.8kg/t.
4. the method according to claim 1, wherein in step S2, in a thick seven cleaner flotations technique, roughing
Using acidified sodium silicate as pH regulator, dosage 1.3-1.8kg/t, using sulfonate SY as inhibitor, dosage is
0.9-1.3kg/t, using SF as collecting agent, dosage 0.2-0.5kg/t.
5. the method according to claim 1, wherein in step S2, in a thick seven cleaner flotations technique, seven times
It is selected to use SY as inhibitor, dosage 30-60g/t.
6. the method according to claim 1, wherein the intensity in the magnetic field is 8000-10000 in step S3
Oersted.
7. ore pulp is dense the method according to claim 1, wherein the shaking table uses fine-mud shaker in step S4
Spend 20%, stroke 10mm, 400 beats/min of jig frequency.
8. the method according to claim 1, wherein the one thick two smart gravity separation technology is to thick in step S4
Mineral products are chosen to carry out primary cleaning, primary cleaning chats product carries out selected for the second time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099236.8A CN109821649A (en) | 2019-01-31 | 2019-01-31 | The method of fluorite is sorted in a kind of rare-earth tailing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099236.8A CN109821649A (en) | 2019-01-31 | 2019-01-31 | The method of fluorite is sorted in a kind of rare-earth tailing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109821649A true CN109821649A (en) | 2019-05-31 |
Family
ID=66862008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910099236.8A Pending CN109821649A (en) | 2019-01-31 | 2019-01-31 | The method of fluorite is sorted in a kind of rare-earth tailing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109821649A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110665632A (en) * | 2019-10-14 | 2020-01-10 | 广东省资源综合利用研究所 | Method for comprehensively recovering molybdenum, lead, fluorine and rare earth from rare earth ore |
| CN113441284A (en) * | 2021-06-30 | 2021-09-28 | 杨卫国 | Fluorite flotation process |
| CN115463740A (en) * | 2022-08-24 | 2022-12-13 | 包头稀土研究院 | Method for treating fluorite concentrate and use of phthalic acid |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87107882A (en) * | 1986-11-14 | 1988-05-25 | 住友金属矿山株式会社 | The beneficiating method of rare earth ore |
| CN102886300A (en) * | 2012-10-19 | 2013-01-23 | 内蒙古科技大学 | Ore separation method for recycling scandium from bayan obo tailings |
| CN103316770A (en) * | 2013-05-23 | 2013-09-25 | 包钢集团矿山研究院（有限责任公司） | Mineral processing technology for recycling fluorite from baotite, magnetite and tailing |
| CN103386358A (en) * | 2013-07-19 | 2013-11-13 | 广州有色金属研究院 | Ore dressing method for low-grade rare earth ore |
| CN104096633A (en) * | 2014-07-07 | 2014-10-15 | 包钢集团矿山研究院（有限责任公司） | Mineral processing technology for comprehensively recycling various mineral resources from rare-earth tailings |
| CN106944245A (en) * | 2017-03-29 | 2017-07-14 | 江西省宏兴选矿设备制造有限公司 | A kind of complicated many golden metallic ores of W, mo, bi fluorite select technique |
| CN107282288A (en) * | 2017-05-26 | 2017-10-24 | 内蒙古科技大学 | A kind of beneficiation method of synthetical recovery weak magnetism, rare earth and fluorite |
| CN109013048A (en) * | 2018-09-25 | 2018-12-18 | 李梅 | A kind of raising zircon concentrate grade obtains the beneficiation method of rareearth enriching material simultaneously |
| CN109092548A (en) * | 2018-08-21 | 2018-12-28 | 重庆天泽兴环境科技有限公司 | The method of rare precious metal is extracted in fluorite tailing |
-
2019
- 2019-01-31 CN CN201910099236.8A patent/CN109821649A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87107882A (en) * | 1986-11-14 | 1988-05-25 | 住友金属矿山株式会社 | The beneficiating method of rare earth ore |
| CN102886300A (en) * | 2012-10-19 | 2013-01-23 | 内蒙古科技大学 | Ore separation method for recycling scandium from bayan obo tailings |
| CN103316770A (en) * | 2013-05-23 | 2013-09-25 | 包钢集团矿山研究院（有限责任公司） | Mineral processing technology for recycling fluorite from baotite, magnetite and tailing |
| CN103386358A (en) * | 2013-07-19 | 2013-11-13 | 广州有色金属研究院 | Ore dressing method for low-grade rare earth ore |
| CN104096633A (en) * | 2014-07-07 | 2014-10-15 | 包钢集团矿山研究院（有限责任公司） | Mineral processing technology for comprehensively recycling various mineral resources from rare-earth tailings |
| CN106944245A (en) * | 2017-03-29 | 2017-07-14 | 江西省宏兴选矿设备制造有限公司 | A kind of complicated many golden metallic ores of W, mo, bi fluorite select technique |
| CN107282288A (en) * | 2017-05-26 | 2017-10-24 | 内蒙古科技大学 | A kind of beneficiation method of synthetical recovery weak magnetism, rare earth and fluorite |
| CN109092548A (en) * | 2018-08-21 | 2018-12-28 | 重庆天泽兴环境科技有限公司 | The method of rare precious metal is extracted in fluorite tailing |
| CN109013048A (en) * | 2018-09-25 | 2018-12-18 | 李梅 | A kind of raising zircon concentrate grade obtains the beneficiation method of rareearth enriching material simultaneously |
Non-Patent Citations (1)
| Title |
|---|
| 钱淑慧等: "白云鄂博氧化矿尾矿中萤石资源回收试验", 《现代矿业》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110665632A (en) * | 2019-10-14 | 2020-01-10 | 广东省资源综合利用研究所 | Method for comprehensively recovering molybdenum, lead, fluorine and rare earth from rare earth ore |
| CN113441284A (en) * | 2021-06-30 | 2021-09-28 | 杨卫国 | Fluorite flotation process |
| CN115463740A (en) * | 2022-08-24 | 2022-12-13 | 包头稀土研究院 | Method for treating fluorite concentrate and use of phthalic acid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102728453B (en) | New technology for sorting lean hematite and magnetite orecontaining iron carbonate | |
| CN102909124B (en) | Iron-increasing and silicon-reducing reselection technique for mixed-type lean iron ore tailings | |
| CN109382213B (en) | Ore dressing method for gibbsite type bauxite | |
| CN109821649A (en) | The method of fluorite is sorted in a kind of rare-earth tailing | |
| CN112642575B (en) | Magnetic levitation combined separation method for carbonate-containing lean magnetic hematite mixed iron ore | |
| CN108405173B (en) | Novel fine beneficiation process for magnetic hematite and siderite mixed iron ore | |
| CN109453891B (en) | High sesqui-collophanite spiral chute re-floating combined process | |
| CN108793731B (en) | Preparation method of raw material for ultra-white glass | |
| CN101733194B (en) | Ore dressing method of low-grade manganese carbonate ore | |
| CN103934093B (en) | The beneficiation method of microfine refractory iron ore flotation concentrate productivity and the response rate can be improved | |
| CN103272698B (en) | Mineral separation process for recycling iron and rare earth in baotite magnetite flotation tailings | |
| CN109806966B (en) | Beneficiation method for comprehensively recovering strontium minerals from rare earth tailings | |
| CN105944825B (en) | A kind of ore dressing and desiliconizing enrichment method of Fine Hematite Ore | |
| CN109622210A (en) | A kind of method of weathering type potash feldspar ore gradation grade purification | |
| CN104607312B (en) | Bastnaesite beneficiation process | |
| CN106944248A (en) | A kind of beneficiation method of the compound iron ore of hydrochlorate containing high-carbon | |
| CN110860369A (en) | Beneficiation method for recovering ultralow-grade rare earth and fluorite from rare earth tailings | |
| WO2019218295A1 (en) | Efficient purification method for high-silicon, high-calcium, high-iron and low-grade brucite | |
| CN106824512A (en) | It is a kind of improve high-carbon hydrochlorate compound iron ore iron ore concentrate alkali than beneficiation method | |
| CN109013048A (en) | A kind of raising zircon concentrate grade obtains the beneficiation method of rareearth enriching material simultaneously | |
| CN108246510A (en) | A kind of method for improving magnesite flotation recovery rate | |
| CN103386361A (en) | Beneficiation method for mixed magnetite and hematite | |
| CN110369121A (en) | Screening-gravity separation technology is added before phosphorus ore direct flotation operation | |
| CN114100840A (en) | Mineral processing technology for flotation of associated fluorite in tungsten flotation tailings | |
| CN112619883A (en) | Method for preparing super-white glass material by purifying fine quartz sandstone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190531 |
|
| RJ01 | Rejection of invention patent application after publication |