CN106000620A - Beneficiation method for recovering high iron and high sulfur concentrate from copper tailings containing sulfur and iron - Google Patents
Beneficiation method for recovering high iron and high sulfur concentrate from copper tailings containing sulfur and iron Download PDFInfo
- Publication number
- CN106000620A CN106000620A CN201610309551.5A CN201610309551A CN106000620A CN 106000620 A CN106000620 A CN 106000620A CN 201610309551 A CN201610309551 A CN 201610309551A CN 106000620 A CN106000620 A CN 106000620A
- Authority
- CN
- China
- Prior art keywords
- flotation
- sulfur
- iron
- tailing
- magnetic separation
- 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
Abstract
The invention discloses a beneficiation method for recovering high iron and high sulfur concentrate from copper tailings containing sulfur and iron. The method includes the technical processes that (1) preconcentrated iron pyrite is obtained by carrying out intermediate intensity magnetic separation-flotation on the copper tailings; (2) the preconcentrated iron pyrite is subjected to preliminary classification, regrinding and low-intensity magnetic separation; (3) reflotation is carried out on tailings subjected to low-intensity magnetic separation, specifically, by carrying out further flotation on the tailings subjected to low-intensity magnetic separation, the flotation high iron and high sulfur concentrate is obtained, and reflotation tailings is filtered out. The method has the advantages that the sulfur and iron resources can be recovered comprehensively, the technical process is simple, the index is stable, field operation and management are easy, the production cost is low, and the chemical dosage is low; the SS grade of the finally obtained high iron and high sulfur concentrate is higher than 25%, the TFe content is higher than 55%, the TFe content of sulfate slag after acid production is higher than 62%, and accordingly comprehensive recovery and utilization of the sulfur and iron resources are achieved.
Description
Technical field
The invention belongs to spoil reclaming technical field, be specifically related to a kind of recovery from copper mining tailing
The beneficiation method of high-ferrum sulfur ore concentrates, is particularly suitable for S 3.5-5.0%, TFe9.0-12.0%
Copper tailing reclaims high-ferrum sulfur ore concentrates, selects combining of the double resource of the sulfur in copper mining tailing, ferrum with realization
Close and reclaim and utilize.
Background technology
Copper tailing often contains based on magnetic iron ore, and association part pyrite, magnetic iron ore
Sulfur, iron resource, if this part resource is not reclaimed, one causes the waste of resource,
Two carry out containing sulfur minerals oxidation often produces sour water and heavy metal, easily environment is caused severe contamination,
It is therefore desirable to comprehensively utilized, not only can effectively utilize discarded valuable resource, improve choosing
The economic benefit of factory, and tailings discharging amount can be reduced, alleviate environmental pollution, economic benefit, ring
Border remarkable benefit.
At present, copper tailing reclaims sulfur, the ore-dressing technique of iron resource mainly have single magnetic separation process,
Single floatation process.
The advantage of single magnetic separation process flow process itself has: the configuration of (1) equipment is simple, produces steady
Fixed, easy to operate；(2) recyclable association magnetic iron ore, improves the TFe content in iron concentrate,
Be conducive to improving the TFe grade of the sulfate slag after antacid.But also there is its weak point: (1)
The pyrite resource of association can not obtain efficient recovery；(2) the grinding particle size condition of copper is being selected
Under, sulfur, iron resource fail to dissociate fully, cause sulfur, Iron grade relatively low.
The advantage of single flotation process itself has: (1) iron concentrate is of high grade；(2) raw
Produce stable；It is disadvantageous in that: (1) often uses highly basic to suppress magnetic iron ore when selecting copper
And pyrite, cause copper tailing to use flotation when selecting sulfur, the repressed magnetic iron ore of this part and
Pyrite is difficult to be activated, and reagent consumption amount is excessive；(2) flotation uses closed circuit, operation time
Number is many；(3) association magnetic iron ore fails to be recycled.
What " non-ferrous metal " (ore dressing part) the 4th phase in 2011 delivered " floats copper tailing to return
Receive the experimental study of ferrum " in a literary composition, the result of the test that copper flotation tailing carries out magnetic separation ferrum shows,
Use the single magnetic separation process flow process of " low intensity magnetic separation high intensity magnetic separation coarse concentrate regrinding is selected ", can
To obtain Iron grade 44.15%, the final iron ore concentrate of iron recovery 52.45%.This technological process
Fairly simple, but the iron concentrate grade obtained is low, does not reaches the requirement of commercial iron concentrate, and should
Technique is also not suitable for ferrum in copper tailing, the synthetical recovery of sulfur, utilization.
Summary of the invention
The purpose of the present invention is aiming at the above-mentioned problems in the prior art, and provides a kind of
Can synthetical recovery sulfur iron resource, technological process is simple, production cost is low, dosing is few
From sulfur-bearing, ferrum copper tailing reclaim the beneficiation method of high-ferrum sulfur ore concentrates.
For realizing the above-mentioned purpose of the present invention, the present invention from sulfur-bearing, ferrum copper tailing reclaim height
The beneficiation method of ferrum iron concentrate is achieved through the following technical solutions.The present invention is from sulfur-bearing, ferrum
Reclaim the technique of beneficiation method employing of high-ferrum sulfur ore concentrates in copper tailing, step is:
1) magnetic-flotation preenrichment troilite in copper tailing: copper tailing is used Wet-type permanent magnet drum type
Midfield intensity magnetic separator carries out magnetic separation, it is thus achieved that middle magnetic separation rough concentrate, middle magnetic tailing；Centering magnetic separation
Mine tailing uses a flotation to obtain flotation rough concentrate, a flotation tailing of dishing out；Middle magnetic separation is coarse-fine
Ore deposit, flotation rough concentrate merge into preenrichment rough concentrate.
The magnetic induction scope of described Wet-type permanent magnet drum type midfield intensity magnetic separator is 0.3-0.4
Tesla；A described flotation use sulphuric acid be pH regulator, copper sulfate for being activator,
Butyl xanthate is collecting agent.
The addition of described regulator sulphuric acid is 800-1200g/t, the interpolation of activator copper sulfate
Amount is 80-120g/t for 300-500g/t, the addition of collecting agent butyl xanthate, and medicament adds
Amount is for measuring to the dry ore deposit in ore deposit this flotation.
2) preenrichment rough concentrate pre-classification--low intensity magnetic separation of regrinding: preenrichment rough concentrate is carried out
Pre-classification-regrind, overflow granularity controls to account for preenrichment rough concentrate at-0.076mm grain size content
The 80%-95% of gross weight；Low intensity magnetic separation uses Wet-type permanent magnet drum type magnetic separator, obtains weak magnetic respectively
Select iron concentrate containing high sulphur, low intensity magnetic separation mine tailing；
The magnetic induction scope of described Wet-type permanent magnet drum type magnetic separator is that 0.15-0.25 is special
Si La.
3) weakly magnetic tailings flotation again: low intensity magnetic separation mine tailing is carried out further flotation, it is thus achieved that flotation
Iron concentrate containing high sulphur, flotation tailing again of dishing out.
Weakly magnetic tailings flotation again be also adopted by sulphuric acid be pH regulator, copper sulfate for be activator,
Butyl xanthate is collecting agent；The addition of described regulator sulphuric acid is 800-1200g/t, activation
The addition of agent copper sulfate is 300-500g/t, the addition of collecting agent butyl xanthate is
80-120g/t, additive amount of medicament is to measure this flotation to the dry ore deposit in ore deposit.
Above-mentioned 2nd) step obtains low intensity magnetic separation iron concentrate containing high sulphur, the 3rd) flotation that obtains of step is high
Sulfur iron ore concentrate merges into final iron concentrate containing high sulphur；A flotation tailing that above-mentioned 1st) step is dished out,
3rd) flotation tailing again that step is dished out merges into true tailings.
Above-mentioned 2nd) pre-classification described in step uses hydrocyclone to be preferred, overflow granularity control
The 85%-90% that system accounts for preenrichment rough concentrate gross weight at-0.076mm grain size content is preferred, waterpower
Hydrocyclone sand enters ball mill and regrinds, and ball mill ore discharging returns hydrocyclone formation and closes
Road.
Above-mentioned dosing, magnetic induction, the isoparametric occurrence of grind grading granularity, all
Can be determined by laboratory test result of study according to ore properties.
Compared with prior art, the present invention from sulfur-bearing, ferrum copper tailing reclaim high-ferrum sulfur ore concentrates
Beneficiation method have the advantage that
(1) to copper tailing initially with middle magnetic-flotation preenrichment troilite, can throw except qualified tail
Ore deposit, it is achieved that " can lose and early lose ", is greatly reduced the ore deposit amount of subsequent treatment.
(2) preenrichment concentrate is through-low intensity magnetic separation of regrinding, and can obtain overwhelming majority high-ferrum sulfur ore concentrates.
(3) low intensity magnetic separation mine tailing is through flotation, can obtain again fraction iron concentrate, it is ensured that total concentrate
Sulfur iron recovery.
(4) comparing with the single magnetic separation process in background technology, the present invention has not only taken into account Huang
The recovery of iron mine, and, preenrichment rough concentrate, through regrinding and reconcentration, makes the sulfur in concentrate, ferrum product
Position is obtained for further raising, makes the iron concentrate containing high sulphur of acquisition produce in producing sulphuric acid
The TFe of sulfate slag > 62%, can realize sulfur, the double utilization of resources of ferrum.
(5) comparing with the single floatation process in background technology, the present invention has not only taken into account magnetic
The recovery of iron mine, and, major part magnetic iron ore is reclaimed by magnetic separation, and flotation need to be reclaimed
Concentrate amount is few, greatly reduces floating agent consumption, is conducive to alleviating environmental pollution, and
Flotation only needs to roughly select, and greatly reduces flotation operation number of times.
Accompanying drawing explanation
Fig. 1 be the present invention from sulfur-bearing, ferrum copper tailing reclaim the beneficiation method of high-ferrum sulfur ore concentrates
Process chart.
Detailed description of the invention
For describe the present invention, below in conjunction with the accompanying drawings with embodiment to the present invention from sulfur-bearing, the copper of ferrum
The beneficiation method reclaiming high-ferrum sulfur ore concentrates in mine tailing is described in further details.S in this copper tailing
4.20%, TFe10.38%.
The present invention as shown in Figure 1 from sulfur-bearing, ferrum copper tailing reclaim the choosing of high-ferrum sulfur ore concentrates
The process chart of ore deposit method is found out, the present invention from sulfur-bearing, ferrum copper tailing reclaim probe into Processing high Iron and Sulfur
Beneficiation method employing following technique, the step of concentrate:
1) magnetic-flotation preenrichment troilite in copper tailing: by direct for the nominal group process of sulfur-bearing, ferrum
Feed Wet-type permanent magnet drum type midfield intensity magnetic separator and carry out magnetic separation, it is thus achieved that most middle magnetic separation is coarse-fine
Magnetic tailing in ore deposit discharge；Centering magnetic tailing uses a flotation to obtain least a portion of flotation
Rough concentrate, a flotation tailing of dishing out, a flotation uses agitation impeller flotator；Middle magnetic
Rough concentrate, flotation rough concentrate is selected to merge into preenrichment rough concentrate.
The magnetic induction scope of described Wet-type permanent magnet drum type midfield intensity magnetic separator is 0.3-0.4
Tesla；A described flotation use sulphuric acid be pH regulator, copper sulfate for being activator,
Butyl xanthate is collecting agent.
The addition of described regulator sulphuric acid is 800-1200g/t, the interpolation of activator copper sulfate
Amount is 80-120g/t for 300-500g/t, the addition of collecting agent butyl xanthate, and medicament adds
Amount is for measuring to the dry ore deposit in ore deposit this flotation.
2) preenrichment rough concentrate pre-classification--low intensity magnetic separation of regrinding: preenrichment rough concentrate is carried out
Pre-classification-regrind, pre-classification uses hydrocyclone, and overflow granularity controls at-0.076mm
Grain size content accounts for the 85%-90% of preenrichment rough concentrate gross weight, and hydrocyclone sand setting enters ball
Grinding machine is regrinded, and ball mill ore discharging returns hydrocyclone and formed closed circuit；Low intensity magnetic separation uses wet
Formula permanent-magnet drum type magnetic separator, it is thus achieved that the low intensity magnetic separation iron concentrate containing high sulphur that major part is qualified, and discharge weak
Magnetic tailing；
The magnetic induction scope of described Wet-type permanent magnet drum type magnetic separator is that 0.15-0.25 is special
Si La.
3) weakly magnetic tailings flotation again: low intensity magnetic separation mine tailing is carried out further flotation, can obtain again
Part part flotation iron concentrate containing high sulphur, and the flotation tailing again that continues to dish out.
Weakly magnetic tailings flotation again be also adopted by sulphuric acid be pH regulator, copper sulfate for be activator,
Butyl xanthate is collecting agent；The addition of described regulator sulphuric acid is 800-1200g/t, activation
The addition of agent copper sulfate is 300-500g/t, the addition of collecting agent butyl xanthate is
80-120g/t, additive amount of medicament is to measure this flotation to the dry ore deposit in ore deposit.
Above-mentioned 1st) step is dished out a flotation tailing, the 3rd) flotation tailing again dished out of step
Merge into true tailings.
Above-mentioned 2nd) step obtains low intensity magnetic separation iron concentrate containing high sulphur, the 3rd) flotation that obtains of step is high
Sulfur iron ore concentrate merges into final iron concentrate containing high sulphur, final iron concentrate containing high sulphur SS grade > 25%,
TFe content > 55%, sulfate slag TFe after antacid > 62%, thus realize sulfur, the double resource comprehensive of ferrum
Reclaim and utilize.
The inventive method has that TFe in iron concentrate is of high grade, sulfur iron recovery high, reagent consumption
Less, the advantage such as stable, the on-the-spot easily operated management of index, middle magnetic-flotation preenrichment, throwing removes
A large amount of mine tailings, decrease and enter the ore deposit amount regrinded, be conducive to energy-saving and cost-reducing；Regrind product warp
Low intensity magnetic separation, can obtain most of qualified high-ferrum sulfur ore concentrates, makes the ore deposit amount of entrance flotation be substantially reduced,
Floating agent consumption is few, and flotation operation number of times is few.
Claims (4)
1. from sulfur-bearing, ferrum copper tailing reclaim the beneficiation method of high-ferrum sulfur ore concentrates, it is special
Levy and be the technique of employing, step:
1) magnetic-flotation preenrichment troilite in copper tailing: copper tailing is used Wet-type permanent magnet drum type
Midfield intensity magnetic separator carries out magnetic separation, it is thus achieved that middle magnetic separation rough concentrate, middle magnetic tailing；Centering magnetic separation
Mine tailing uses a flotation to obtain flotation rough concentrate, a flotation tailing of dishing out；Middle magnetic separation is coarse-fine
Ore deposit, flotation rough concentrate merge into preenrichment rough concentrate；
The magnetic induction scope of described Wet-type permanent magnet drum type midfield intensity magnetic separator is 0.3-0.4
Tesla；A described flotation use sulphuric acid be pH regulator, copper sulfate for being activator,
Butyl xanthate is collecting agent；
2) preenrichment rough concentrate pre-classification--low intensity magnetic separation of regrinding: preenrichment rough concentrate is carried out
Pre-classification-regrind, overflow granularity controls to account for preenrichment rough concentrate at-0.076mm grain size content
The 80%-95% of gross weight；Low intensity magnetic separation uses Wet-type permanent magnet drum type magnetic separator, obtains weak magnetic respectively
Select iron concentrate containing high sulphur, low intensity magnetic separation mine tailing；
The magnetic induction scope of described Wet-type permanent magnet drum type magnetic separator is that 0.15-0.25 is special
Si La；
3) weakly magnetic tailings flotation again: low intensity magnetic separation mine tailing is carried out further flotation, it is thus achieved that flotation
Iron concentrate containing high sulphur, flotation tailing again of dishing out.
2. as claimed in claim 1 from sulfur-bearing, ferrum copper tailing reclaim high-ferrum sulfur ore concentrates
Beneficiation method, it is characterised in that: above-mentioned 1) in step, the interpolation of described regulator sulphuric acid
Amount is 800-1200g/t, the addition of activator copper sulfate is 300-500g/t, collecting agent fourth
The addition of base xanthate is 80-120g/t, and additive amount of medicament is to the dry ore deposit in ore deposit to this flotation
Amount.
3. as claimed in claim 2 from sulfur-bearing, ferrum copper tailing reclaim high-ferrum sulfur ore concentrates
Beneficiation method, it is characterised in that: described 3) in step, weakly magnetic tailings flotation again is also adopted by
Sulphuric acid be pH regulator, copper sulfate for be activator, butyl xanthate is collecting agent；Described tune
The addition of whole dose of sulphuric acid is 800-1200g/t, the addition of activator copper sulfate is
300-500g/t, the addition of collecting agent butyl xanthate are 80-120g/t, and additive amount of medicament is
This flotation is measured to the dry ore deposit in ore deposit.
4. as described in claim 1,2 or 3 from sulfur-bearing, ferrum copper tailing reclaim high ferro
The beneficiation method of iron concentrate, it is characterised in that: the above-mentioned 2nd) pre-classification described in step uses
Hydrocyclone, it is total that overflow granularity controls to account for preenrichment rough concentrate at-0.076mm grain size content
The 85%-90% of weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309551.5A CN106000620B (en) | 2016-05-10 | 2016-05-10 | From sulfur-bearing, iron copper tailing in recycle high-ferrum sulfur ore concentrates beneficiation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309551.5A CN106000620B (en) | 2016-05-10 | 2016-05-10 | From sulfur-bearing, iron copper tailing in recycle high-ferrum sulfur ore concentrates beneficiation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106000620A true CN106000620A (en) | 2016-10-12 |
| CN106000620B CN106000620B (en) | 2018-06-01 |
Family
ID=57099148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610309551.5A Active CN106000620B (en) | 2016-05-10 | 2016-05-10 | From sulfur-bearing, iron copper tailing in recycle high-ferrum sulfur ore concentrates beneficiation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106000620B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107115975A (en) * | 2017-05-23 | 2017-09-01 | 西北矿冶研究院 | Beneficiation method for recovering micro-fine particle iron oxide from copper dressing tailings |
| CN107233998A (en) * | 2017-07-05 | 2017-10-10 | 徐忠 | It is a kind of that Iron concentrate, the method for magnetic iron ore are extracted from tailings |
| CN108144744A (en) * | 2016-12-06 | 2018-06-12 | 南京梅山冶金发展有限公司 | The method for floating of sulphur in a kind of association troilite |
| CN109821651A (en) * | 2019-04-15 | 2019-05-31 | 宝钢集团新疆八一钢铁有限公司 | A kind of CHARACTERISTICS OF TAILINGS SAND ferro element choosing method again |
| CN112827640A (en) * | 2021-01-05 | 2021-05-25 | 安徽马钢罗河矿业有限责任公司 | Beneficiation method for recovering iron and sulfur from high-sulfur low-intensity magnetic separation tailings |
| CN113019684A (en) * | 2021-03-15 | 2021-06-25 | 中国恩菲工程技术有限公司 | Method for separating pyrite from pyrrhotite |
| CN113369011A (en) * | 2021-05-31 | 2021-09-10 | 铜陵有色金属集团股份有限公司 | Method for gradient recovery of pyrite mineral from copper-dressing tailings |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274799A (en) * | 2011-09-02 | 2011-12-14 | 中南大学 | Composite medicine for effective magnetic separation and recovery pyrite concentrate from flotation tailings |
| JP2013087358A (en) * | 2011-10-21 | 2013-05-13 | Jx Nippon Mining & Metals Corp | Method for treating copper concentrate |
| CN103143434A (en) * | 2011-12-06 | 2013-06-12 | 广东省大宝山矿业有限公司 | Method for producing high-quality sulfur concentrate by pyrrhotite-containing tailing obtained by copper-sulfur ore copper separating pyrrhotite |
-
2016
- 2016-05-10 CN CN201610309551.5A patent/CN106000620B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274799A (en) * | 2011-09-02 | 2011-12-14 | 中南大学 | Composite medicine for effective magnetic separation and recovery pyrite concentrate from flotation tailings |
| JP2013087358A (en) * | 2011-10-21 | 2013-05-13 | Jx Nippon Mining & Metals Corp | Method for treating copper concentrate |
| CN103143434A (en) * | 2011-12-06 | 2013-06-12 | 广东省大宝山矿业有限公司 | Method for producing high-quality sulfur concentrate by pyrrhotite-containing tailing obtained by copper-sulfur ore copper separating pyrrhotite |
Non-Patent Citations (3)
| Title |
|---|
| 廖力等: "安徽某铜矿厂堆存尾矿综合回收工艺研究", 《现代矿业》 * |
| 张德兴等: "选铜尾矿综合回收硫资源研究及实践", 《矿冶》 * |
| 王立刚等: "浮铜尾矿回收铁的试验研究", 《有色金属（选矿部分）》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108144744A (en) * | 2016-12-06 | 2018-06-12 | 南京梅山冶金发展有限公司 | The method for floating of sulphur in a kind of association troilite |
| CN107115975A (en) * | 2017-05-23 | 2017-09-01 | 西北矿冶研究院 | Beneficiation method for recovering micro-fine particle iron oxide from copper dressing tailings |
| CN107115975B (en) * | 2017-05-23 | 2019-05-14 | 西北矿冶研究院 | Beneficiation method for recovering micro-fine particle iron oxide from copper dressing tailings |
| CN107233998A (en) * | 2017-07-05 | 2017-10-10 | 徐忠 | It is a kind of that Iron concentrate, the method for magnetic iron ore are extracted from tailings |
| CN109821651A (en) * | 2019-04-15 | 2019-05-31 | 宝钢集团新疆八一钢铁有限公司 | A kind of CHARACTERISTICS OF TAILINGS SAND ferro element choosing method again |
| CN112827640A (en) * | 2021-01-05 | 2021-05-25 | 安徽马钢罗河矿业有限责任公司 | Beneficiation method for recovering iron and sulfur from high-sulfur low-intensity magnetic separation tailings |
| CN113019684A (en) * | 2021-03-15 | 2021-06-25 | 中国恩菲工程技术有限公司 | Method for separating pyrite from pyrrhotite |
| CN113369011A (en) * | 2021-05-31 | 2021-09-10 | 铜陵有色金属集团股份有限公司 | Method for gradient recovery of pyrite mineral from copper-dressing tailings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106000620B (en) | 2018-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106000620A (en) | Beneficiation method for recovering high iron and high sulfur concentrate from copper tailings containing sulfur and iron | |
| CN101428248B (en) | Beneficiation method for recycling specularite | |
| CN101884951B (en) | Combined mineral dressing technology of fine grain and micro grain cassiterite | |
| CN101664715B (en) | Ore-dressing technique capable of effectively improving comprehensive utilization rate of mine resources | |
| WO2022032922A1 (en) | Series elutriation and deep beneficiation process for magnetite extremely difficult to be beneficiated | |
| CN103736588B (en) | Efficient beneficiation method of comprehensively recovering low-grade vanadium titano-magnetite | |
| CN104475236B (en) | Combined beneficiation method for treating micro-fine grain disseminated iron ores | |
| CN104888958B (en) | Micro-fine particle red magnetic mixed iron ore sorting process | |
| CN104722393B (en) | A kind of beneficiation method for improving the microfine speculum iron rate of recovery | |
| CN108405173B (en) | Novel fine beneficiation process for magnetic hematite and siderite mixed iron ore | |
| CN107583764B (en) | Beneficiation method for recovering mica from copper ore tailings | |
| CN107321495A (en) | A kind of beneficiation method of high efficiente callback particulate low-grade magnetite | |
| CN109718947A (en) | Microfine magnetic-red compound iron ore magnetic-floats beneficiation combined method method | |
| CN102430468A (en) | Magnetism-gravity combined separation technology for magnetic hematite mixed type rough concentrate | |
| CN102357424A (en) | Extracting method for copper in slag of copper smelting converter | |
| CN104888939B (en) | Magnetic is preselected again, coarse concentrate regrinding selects bloodstone tailings recovery process again | |
| CN107096638A (en) | A kind of iron ore composite ore point mill, sorting, magnetic-gravity separation technique | |
| CN103433127B (en) | The recovery process again of ultra-fine grade ilmenite in a kind of pastille Tailing of titanium separation | |
| CN104148163B (en) | A kind of beneficiation method processing low-grade tin-lead-zinc multi-metal oxygen ore deposit | |
| CN102824956B (en) | Poor hematite grading level and narrow level sorting process | |
| CN109985723A (en) | A kind of beneficiation method of microfine magnetic-red compound iron ore | |
| CN105214837B (en) | A kind of copper sulphur ore deposit beneficiation method rich in magnetic iron ore and pyrite | |
| CN111068897A (en) | Fine particle magnetite beneficiation process | |
| CN108212504A (en) | A kind of method that pre-selection-roasting-magnetic floats technique recycling magnetic tailing | |
| CN104014420A (en) | Multi-metal recovery method for low-grade oxygen-sulfide lead-zinc mixed ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 243000 Xitang Road, Ma'anshan Economic Development Zone, Anhui, No. 666 Patentee after: MAANSHAN Mine Research Institute Co.,Ltd. Address before: 243000 Xitang Road, Ma'anshan Economic Development Zone, Anhui, No. 666 Patentee before: SINOSTEEL MAANSHAN INSTITUTE OF MINING RESEARCH Co.,Ltd. |