CN108580022A - Mineral processing technology for producing high-end chemical-grade chromite concentrate - Google Patents
Mineral processing technology for producing high-end chemical-grade chromite concentrate Download PDFInfo
- Publication number
- CN108580022A CN108580022A CN201810228535.2A CN201810228535A CN108580022A CN 108580022 A CN108580022 A CN 108580022A CN 201810228535 A CN201810228535 A CN 201810228535A CN 108580022 A CN108580022 A CN 108580022A
- Authority
- CN
- China
- Prior art keywords
- ore
- concentrate
- magnetic
- strong magnetic
- mineral
- 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.)
- Granted
Links
Classifications
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a mineral processing technology for producing high-end chemical-grade chromite concentrate, which realizes the sorting of high-grade chromite by combining a magnetic-gravity combined technology with a step grinding and step selection method, and mainly comprises the following steps: a. coarse grinding the raw ore by a rod mill, and then performing strong magnetic tailing discarding; b. concentrating the strong magnetic rough concentrate pulp to 50-60% by mass; c. carrying out strong magnetic concentration twice after the concentrated ore pulp is finely ground by an pizza grinder; d. carrying out multiple sorting on the strong magnetic concentrate and the middling by using a tin cloud shaking table respectively to obtain a final product; the invention can not only obtain Cr2O3The content is more than or equal to 60 percent and the impurity SiO2The content is less than or equal to 1.5 percent, can meet the requirement of producing high-quality chromite concentrate of chromium compounds in high-end chemical industry, and simultaneously ensures the return of chromiteThe method has the advantages of simple process flow, low production cost, no need of adding a chemical flotation agent, less environmental pollution, higher economic and social benefits and high popularization and application value.
Description
Technical field
The invention belongs to technical field of beneficiation, and in particular to a kind of dresser of the high-end chemical industry grade chromite concentrate of output
Skill, particularly suitable for Cr in chromite ore2O3The ore dressing of the high-grade chromite ore of content >=30% is recycled.
Background technology
Chromium is a kind of important meals in modern industry, and purposes is extremely wide, be mainly used for metallurgical, refractory material and
Chemical industrial field etc..In metallurgical industry, chromite is mainly used to produce ferrochrome and crome metal；On refractory material,
Chromite is used for manufacturing chrome brick, chromium and magnesium brick and other special refractories；Chromite is mainly used to production weight on chemical industry
Sodium chromate, and then produce other chromium compounds.
Currently, mainly using single gravity concentration, single magnetic separation, or again-magnetic joint to the ore-dressing technique of chrome ore at present both at home and abroad
Ore dressing etc., these methods are only capable of output chromite concentrate used for refractory material and metallurgy chromite concentrate, and rarely have technique
The chromite concentrate of the energy high-end chemical grade of output.As Chinese invention patent CN103878111A and CN103894287A are disclosed respectively
The beneficiation new process of high-grade chromite ore a kind of and a kind of beneficiation method of recycling chrome ore lump ore, obtained ferrochrome
Cr in mine concentrate2O3Content 40% or so, is simply possible to use in refractory material；《Mineral products comprehensively utilize》Deliver " from low-grade chromium
The ore-dressing technique research of chromite is recycled in ore " in paper then to single gravity concentration, again-magnetic combined mineral dressing technology carried out pair
Than, weight-magnetic combined effect it is obvious that its strong magnetic-tabling technological process effect of strong magnetic-shaking table-middling ore regrinding-for using most
It is good, but because the technological parameter of ore grinding is identical twice, the influence to iron ore granularity is little, cannot effectively control ore grain size and
The degree of cooperation of magnetic separator causes magnetic separation ineffective, therefore the content of chromite can only be made to reach 40% or more.
In order to reach preferable aeneficiation effect, chemical flotation is mostly used and ore-dressing technique that magnetic separation is combined, such as China is specially
Magnetic separation is used in sharp CN103567055A first, qualified ore screening is come out, floatation process is then utilized, to tailing
It carries out one and recycles the process selected again；A kind of beneficiation method is disclosed in 102896049 B of CN, first passes around ore grinding, using floating
It selects medicament to carry out flotation to ore pulp, respectively obtains concentrate and tailings, then magnetic separation recovery is carried out to the iron ore in tailing, obtain final
Ore dressing result.Beneficiation combined method has more ripe mineral processing circuit, may select a variety of concentrate, aeneficiation effect is preferable；
But whole process processing step is more, cumbersome, and because the addition of flotation reagent leads to discharge of wastewater, in order to simplify ore dressing
Technique and reduction pollution discharge of wastewater, it is the target of the following ore-dressing technique to take efficient single one physical ore-dressing technique.
Since the physical properties difference such as chromite and gangue mineral serpentine, talcum is big, experiment proves, using conventional mill
When mine equipment is milled to chromite monomer dissociation, be easy to cause the overground of gangue mineral, to form a large amount of sludges, interfere magnetic separation and
The separating effect of shaking table causes the content of final Chromium in Ores iron ore not high.Therefore, how to be controlled during ore grinding and magnetic separation
The grain size of ore processed and the magnetism intensity of magnetic separation are asked to realize that the recycling of high-grade chromite is that the present invention is urgently to be resolved hurrily
Topic.
Invention content
In order to effectively improve the ore dressing grade of chromite, the production cost of high-end chemical industry grade chromite is reduced, the present invention carries
A kind of beneficiation method for grinding rank choosing by rank has been supplied, it is high-end in conjunction with high gradient magnetic separator and the cloud tin shaking table of screening fine sand, output
The technique of chemical industry grade chromite, includes the following steps：
A. raw ore carries out strong magnetic and throws tail after rod mill is roughly ground；
B. strong magnetic throws the rough concentrate ore pulp mass fraction obtained after tail and sizes mixing to 50%~60%；
C. for the ore pulp after sizing mixing after the Sa grinding machine fine grinding that ends, strong magnetic is selected twice for progress, obtains concentrate and chats；
D. high intensity magnetic mineral and chats, which are respectively adopted after shaking table is repeatedly sorted, obtains final products concentrate and tailings.
Preferably, using rod mill when ore is roughly ground, in the ore pulp after ore grinding, the granularity of mineral is -0.074mm,
Mass fraction is 55%~70%.
Preferably, the equipment used in high intensity magnetic separation is high gradient magnetic separator, in order to ensure magnetic separation effect, leakage is avoided to select, selection
Magnetic separator stroke is 16mm~26mm, and jig frequency is 200 beats/min~300 beats/min.
Preferably, in order to reduce the loss of magnetic iron ore, magnetic field intensity when strong magnetic throws tail is 1.1T~1.4T, is easy to magnetic
The weaker trommel of property is selected.
Preferably, the smaller ore pulp of grain size in order to obtain, using Chinese mugwort Sa grinding machine, ore grinding when ore fine grinding in step c
In ore pulp afterwards, the granularity of mineral is -0.045mm, and mass fraction is 75%~85%, and wherein 0.025-0.045mm accounts for ore pulp
The 80% of total amount.
Preferably, the selected number of strong magnetic is recleaning, wherein for the first time selected magnetic field intensity be 1.1T~
1.4T, second of selected magnetic field intensity is 0.8T~1.1T, can more effectively be screened using different magnetic separation strengths.
Preferably, shaking table used is cloud tin shaking table, and using the cutting bed surface for sorting fine-grained minerals, in order to ensure
The effect of shaking table screening, adjustment stroke are 10mm~16mm, and jig frequency is 330r/min~340r/min.
Preferably, the flow that high intensity magnetic mineral is sorted using shaking table be at least one roughing, it is secondary scan, primary cleaning, one
It is secondary to select again.
Preferably, strong magnetic chats is at least one roughing, once purging selection, recleaning, one using the flow that shaking table sorts
It is secondary to select again.
Compared with prior art, the positive effect of the present invention is shown as：
(1) present invention makes chromite will be completely dissociated with gangue mineral using the cooperation of stage grinding and Ai Sa grinding machines, and
The grade that chromite can effectively be controlled concentrates in a relatively narrow section (0.025-0.045mm), then is equipped with selectivity more
The multiple screening of good high gradient magnetic separator and cloud tin shaking table, can make Cr in chromite2O3Content be up to 60% or more, from
And achieve the purpose that the high-end chemical industry grade chromite concentrate of output, and recovery rate of concentrate is high.
(2) present invention is single pure physical upgrading technique, is free of floatation process, that is, is not required to add any poisonous and hazardous choosing
Mine medicament, and the beneficiation wastewater of institute's output can be recycled all, will not be impacted to ecological environment, and process is simple, but
It can realize the screening of high-grade chromite.
(3) technique is applied widely, is not influenced by external environments such as height above sea level, weather, temperature.The technique was being implemented
Cheng Zhong, in addition to power cost, it is only necessary to consume water, and to water quality no requirement (NR), therefore, compared with metallurgical technology, cost obviously drops
It is low.
(4) rod mill is not only efficient in coarse grain ore grinding, while can effectively control the overground of mineral, prevents ore mud
Change phenomenon；In fine fraction secondary grinding, Chinese mugwort Sa mill function controls mineral grade in very narrow range, to realize narrow grain
Grade ore dressing.The two is combined, loss of the valuable mineral in discarding coarse tailing and recleaning can be effectively reduced, improves mine
Select efficiency.
Description of the drawings
Fig. 1 is the mineral processing circuit figure of the present invention, wherein strong magnetic selected 1 refers to selected for the first time, strong selected 2 finger second of magnetic
It is secondary selected.
Specific implementation mode
The present invention is specifically described below by embodiment, it is necessary to which indicated herein is that following embodiment is only used
It is further detailed in the present invention, should not be understood as limiting the scope of the invention, which is skilled in technique
Personnel still fall within protection scope of the present invention according to some nonessential modifications and adaptations that foregoing invention content is made.
Embodiment 1
Sample ore is Xinjiang chromite, raw ore Cr2O3Content is 32.55%, SiO2Content is 12.63%, process mineralogy
Studies have shown that Chromium in Ores mineral are mainly chromite, a small amount of chromium-rich spinelle；Gangue mineral is mainly talcum, and secondary is snake
Line stone and carbonate mineral.For the ore, sorted using technological process as shown in Figure 1, specific process parameter is as follows：
A. after being roughly ground to raw ore using rod mill, the mineral granularity in ore pulp is -0.074mm, and mass fraction is
65%；
B. magnetic separation strength when strong magnetic throws tail is 1.1T, and stroke 23mm, jig frequency is 300 beats/min；
C. strong magnetic throws the rough concentrate obtained after tail after the Sa grinding machine fine grinding that ends, and the mineral granularity in ore pulp is -0.045mm,
Mass fraction is 85%, wherein the mineral content in -0.045mm to the sections -0.025mm accounts for the 83% of -0.045mm ore pulp total amounts；
D. it is 1.1T that selected twice, selected for the first time magnetic field intensity is carried out to the ore pulp after fine grinding, and second selected
Magnetic field intensity is 0.8T；
E. the concentrate and chats that obtain after selected twice are repeatedly screened using cloud tin shaking table, shaking table stroke is
14mm, jig frequency 340r/min.
In finally obtained concentrate, Cr2O3Content is 60.88%, SiO2Content is 0.93%, Cr2O3The rate of recovery is
63.25%.
Embodiment 2
Sample ore is Tibet chromite, raw ore Cr2O3Content is 30.12%, SiO2Content is 13.88%, process mineralogy
Studies have shown that Chromium in Ores mineral are mainly alumcromite, a small amount of chromium-rich spinelle；Gangue mineral is mainly serpentine, secondary
For forsterite and carbonate mineral.It for the ore, is sorted using technological process as shown in Figure 1, concrete technology ginseng
Number is as follows：
A. after being roughly ground to raw ore using rod mill, the mineral granularity in ore pulp is -0.074mm, and mass fraction is
60%；
B. magnetic separation strength when strong magnetic throws tail is 1.4T, and stroke 26mm, jig frequency is 300 beats/min；
C. strong magnetic throws the rough concentrate obtained after tail after the Sa grinding machine fine grinding that ends, and the mineral granularity in ore pulp is -0.045mm,
Mass fraction is 87%, wherein the mineral content in -0.045mm to the sections -0.025mm accounts for the 85% of -0.045mm ore pulp total amounts；
D. it is 1.4T that selected twice, selected for the first time magnetic field intensity is carried out to the ore pulp after fine grinding, and second selected
Magnetic field intensity is 1.1T；
E. the concentrate and chats that obtain after selected twice are repeatedly screened using cloud tin shaking table, shaking table stroke is
16mm, jig frequency 340r/min.
In finally obtained concentrate, Cr2O3Content is 60.69%, SiO2Content is 1.03%, Cr2O3The rate of recovery is
62.87%.
Embodiment 3
Sample ore is Tibet chromite, raw ore Cr2O3Content is 43.60%, SiO2Content is 9.20%, process mineralogy
Studies have shown that Chromium in Ores mineral are mainly alumcromite, secondary is chromite and a small amount of chromium-rich spinelle；Gangue mineral master
To be forsterite, secondary is serpentine, a small amount of chlorite and quartz.For the ore, using technological process as shown in Figure 1
It is sorted, specific process parameter is as follows：
A. after being roughly ground to raw ore using rod mill, the mineral granularity in ore pulp is -0.074mm, and mass fraction is
58%；
B. magnetic separation strength when strong magnetic throws tail is 1.2T, and stroke 18mm, jig frequency is 240 beats/min；
C. strong magnetic throws the rough concentrate obtained after tail after the Sa grinding machine fine grinding that ends, and the mineral granularity in ore pulp is -0.045mm,
Mass fraction is 72%, wherein the mineral content in -0.045mm to the sections -0.025mm accounts for the 80% of -0.045mm ore pulp total amounts；
D. it is 1.2T that selected twice, selected for the first time magnetic field intensity is carried out to the ore pulp after fine grinding, and second selected
Magnetic field intensity is 0.9T；
E. the concentrate and chats that obtain after selected twice are repeatedly screened using cloud tin shaking table, shaking table stroke is
14mm, jig frequency 330r/min.
In finally obtained concentrate, Cr2O3Content is 61.28%, SiO2Content is 0.75%, Cr2O3The rate of recovery is
81.68%.
Embodiment 4
Sample ore is Gansu chromite, raw ore Cr2O3Content is 38.63%, SiO2Content is 10.16%, process mineralogy
Studies have shown that Chromium in Ores mineral are mainly alumcromite, secondary is chromite；Gangue mineral is mainly serpentine and olivine,
Secondary is chlorite and talcum.For the ore, sorted using technological process as shown in Figure 1, specific process parameter is as follows：
A. after being roughly ground to raw ore using rod mill, the mineral granularity in ore pulp is -0.074mm, and mass fraction is
62%；
B. it is 1.2T that strong magnetic, which throws the magnetic separation strength when rough concentrate obtained after tail throws tail through the strong magnetic of Sa grinding machine that ends, and stroke is
20mm, jig frequency are 280 beats/min；
C. strong magnetic throws the rough concentrate obtained after tail after the Sa grinding machine fine grinding that ends, and the mineral granularity in ore pulp is -0.045mm,
Mass fraction is 78%, wherein the mineral content in -0.045mm to the sections -0.025mm accounts for the 85% of -0.045mm ore pulp total amounts；
D. it is 1.1T that selected twice, selected for the first time magnetic field intensity is carried out to the ore pulp after fine grinding, and second selected
Magnetic field intensity is 1.0T；
E. the concentrate and chats that obtain after selected twice are repeatedly screened using cloud tin shaking table, shaking table stroke is
12mm, jig frequency 340r/min.
In finally obtained concentrate, Cr2O3Content is 61.63%, SiO2Content is 0.81%, Cr2O3The rate of recovery is
70.87%.
Claims (7)
1. a kind of ore-dressing technique of the high-end chemical industry grade chromite concentrate of output, which is characterized in that using the dresser of rank mill rank choosing
Skill is realized sorting for high-grade chromite, is specifically comprised the following steps：
A. raw ore carries out strong magnetic and throws tail, obtain rough concentrate ore pulp after rod mill is roughly ground；
B. the mass fraction of rough concentrate ore pulp is adjusted to 50%~60%；
C. for the ore pulp after sizing mixing after the Sa grinding machine fine grinding that ends, it is selected to carry out strong magnetic, obtains concentrate and chats；
D. the concentrate and chats obtained after strong magnetic is selected, which is respectively adopted, obtains final concentrate product after shaking table is repeatedly sorted
And tailing.
2. a kind of ore-dressing technique of the high-end chemical industry grade chromite concentrate of output according to claim 1, it is characterised in that：It is former
The mineral granularity that mine obtains after corase grinding is -0.074mm, and ore pulp mass fraction is 55%~70%.
3. a kind of ore-dressing technique of the high-end chemical industry grade chromite concentrate of output according to claim 1, it is characterised in that：By force
Equipment used in magnetic separation is high gradient magnetic separator, and stroke is 16mm~26mm, and jig frequency is 200 beats/min~300 beats/min.
4. a kind of ore-dressing technique of the high-end chemical industry grade chromite concentrate of output according to claim 1, it is characterised in that：Step
Magnetic field intensity when strong magnetic throws tail in rapid a is 1.1T~1.4T.
5. a kind of ore-dressing technique of the high-end chemical industry grade chromite concentrate of output according to claim 1, it is characterised in that：Mine
In ore pulp after Shi Jing Chinese mugwort Sa grinding machine fine grindings, the granularity of mineral is -0.045mm, and mass fraction is 70%~85%, wherein grain
The mineral content spent in -0.045mm to the sections -0.025mm accounts for 80% or more of -0.045mm mineral total amounts.
6. a kind of ore-dressing technique of the high-end chemical industry grade chromite concentrate of output according to claim 1, it is characterised in that：By force
The selected number of magnetic is selected 2 times, wherein magnetic field intensity selected for the first time is 1.1T~1.4T, second of selected magnetic field
Intensity is 0.8T~1.1T.
7. a kind of ore-dressing technique of the high-end chemical industry grade chromite concentrate of output according to claim 1, it is characterised in that：
A, shaking table used is cloud tin shaking table, and using the cutting bed surface for sorting fine-grained minerals, and stroke is 10mm~16mm,
Jig frequency is 330r/min~340r/min；
B, the concentrate after strong magnetic is selected use the flow that shaking table sorts for one roughing, it is secondary scan, primary cleaning, it is primary again
Choosing；
C, the chats after strong magnetic is selected use the flow that shaking table sorts for one roughing, once purging selection, recleaning, it is primary again
Choosing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810228535.2A CN108580022B (en) | 2018-03-20 | 2018-03-20 | Mineral processing technology for producing chemical-grade chromite concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810228535.2A CN108580022B (en) | 2018-03-20 | 2018-03-20 | Mineral processing technology for producing chemical-grade chromite concentrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108580022A true CN108580022A (en) | 2018-09-28 |
| CN108580022B CN108580022B (en) | 2019-12-03 |
Family
ID=63626827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810228535.2A Expired - Fee Related CN108580022B (en) | 2018-03-20 | 2018-03-20 | Mineral processing technology for producing chemical-grade chromite concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108580022B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465095A (en) * | 2018-11-09 | 2019-03-15 | 黑龙江多宝山铜业股份有限公司 | It is a kind of to drop miscellaneous milling method for copper concentrate upgrading |
| CN112474057A (en) * | 2020-11-09 | 2021-03-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for desulfurizing sulfur-containing vanadium-titanium-iron ore concentrate and recovering sulfur-cobalt ore concentrate |
| CN115888943A (en) * | 2022-10-28 | 2023-04-04 | 鞍钢集团矿业有限公司 | Short-process efficient grinding and sorting process for micro-fine particle lean magnetic iron ore |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5595347A (en) * | 1990-08-30 | 1997-01-21 | Austpac Gold N.L. | Process for separating ilmenite |
| CN102836777A (en) * | 2012-09-18 | 2012-12-26 | 镇康县金宏矿业有限公司 | Ore dressing technology for comprehensively recovering lean and fine wiikite |
| CN103657841A (en) * | 2013-12-09 | 2014-03-26 | 攀钢集团矿业有限公司 | Production method of vanadium-titanium-ferrum concentrate |
| CN105327772A (en) * | 2015-12-08 | 2016-02-17 | 中国地质科学院郑州矿产综合利用研究所 | Pre-desliming beneficiation method for fine-grain embedded molybdenum ore |
-
2018
- 2018-03-20 CN CN201810228535.2A patent/CN108580022B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5595347A (en) * | 1990-08-30 | 1997-01-21 | Austpac Gold N.L. | Process for separating ilmenite |
| CN102836777A (en) * | 2012-09-18 | 2012-12-26 | 镇康县金宏矿业有限公司 | Ore dressing technology for comprehensively recovering lean and fine wiikite |
| CN103657841A (en) * | 2013-12-09 | 2014-03-26 | 攀钢集团矿业有限公司 | Production method of vanadium-titanium-ferrum concentrate |
| CN105327772A (en) * | 2015-12-08 | 2016-02-17 | 中国地质科学院郑州矿产综合利用研究所 | Pre-desliming beneficiation method for fine-grain embedded molybdenum ore |
Non-Patent Citations (1)
| Title |
|---|
| 雷力等: "从米易橄榄岩体低品位铬矿石中回收铬铁矿研究", 《四川地质学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465095A (en) * | 2018-11-09 | 2019-03-15 | 黑龙江多宝山铜业股份有限公司 | It is a kind of to drop miscellaneous milling method for copper concentrate upgrading |
| CN112474057A (en) * | 2020-11-09 | 2021-03-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for desulfurizing sulfur-containing vanadium-titanium-iron ore concentrate and recovering sulfur-cobalt ore concentrate |
| CN115888943A (en) * | 2022-10-28 | 2023-04-04 | 鞍钢集团矿业有限公司 | Short-process efficient grinding and sorting process for micro-fine particle lean magnetic iron ore |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108580022B (en) | 2019-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101733190B (en) | Benefication method for sulphur-containing composite iron tailing | |
| CN104959228B (en) | Lean magnetite beneficiation method capable of reducing fineness of grinding ore | |
| CN104888947B (en) | The magnetic separation of fine grain teeth cloth magnetic-red composite ore-centrifuge sorting process | |
| CN106391295B (en) | A kind of titanium separation method and device of vanadium titano-magnetite | |
| CN105435970B (en) | A kind of ore-dressing technique of copper smelting-furnace slag flotation recycling copper | |
| CN108580022B (en) | Mineral processing technology for producing chemical-grade chromite concentrate | |
| CN109158222A (en) | A kind of echelon fast-flotation process of copper converter slag ore dressing | |
| CN110976077A (en) | Method for preparing high-purity quartz sand iron concentrate from magnetite associated granular quartz | |
| CN108531717A (en) | A method of Refractory red iron ores are handled based on graded combination magnetizing roast | |
| CN108993764A (en) | Miscellaneous process drops in a kind of chromium depleted zone upgrading | |
| CN103752403B (en) | A kind of beneficiation method being suitable for high alumina, high mud, high-grade Complex iron ore | |
| CN115178363B (en) | Ultra-high purity quartz powder prepared from mudstone-containing quartz rock and comprehensive utilization process | |
| CN110369121B (en) | Screening-gravity separation process added before phosphorite direct flotation operation | |
| CN105689126A (en) | Mineral processing process for oolitic hematite | |
| CN112871439B (en) | Industrial production method for separating fine-grained copper-molybdenum bulk concentrate by using pulsating high-gradient magnetic separation technology | |
| CN104014416A (en) | Separation method for carbonate-contained iron ore | |
| CN111135956B (en) | Method for protecting scale in graphite processing | |
| CN113083496A (en) | Method for enriching magnesium-containing minerals in asbestos tailings | |
| CN109127122B (en) | Beneficiation method for improving iron and reducing silicon of magnetite concentrate | |
| CN108940576A (en) | A kind of potassium albite production method of low cost | |
| CN104907163A (en) | Mineral separation method of finely disseminated vanadium contained carbonaceous shale | |
| CN105923644B (en) | Dissociation method of barite and gangue ores | |
| CN113877719A (en) | Method for recovering quartz and enriching tungsten from gold tailings | |
| CN108080141A (en) | A kind of sorting process of bloodstone | |
| CN110216009A (en) | A kind of dressing method of steel slag |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191203 Termination date: 20210320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |