CN108993764A - Miscellaneous process drops in a kind of chromium depleted zone upgrading - Google Patents
Miscellaneous process drops in a kind of chromium depleted zone upgrading Download PDFInfo
- Publication number
- CN108993764A CN108993764A CN201810685599.5A CN201810685599A CN108993764A CN 108993764 A CN108993764 A CN 108993764A CN 201810685599 A CN201810685599 A CN 201810685599A CN 108993764 A CN108993764 A CN 108993764A
- Authority
- CN
- China
- Prior art keywords
- concentrate
- magnetic
- grinding
- ore
- mill
- 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
-
- 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
-
- 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
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of chromium depleted zone upgradings to drop miscellaneous process, belongs to technical field of beneficiation.It is step one of the invention, broken: low-ore grade magnetic iron ore being carried out after Three stage crushing with single closed circuit stage to -20mm, then carries out high pressure roller mill ultrafine grinding and sieves full closed circuit technique wet type pre-selecting to -3mm rough concentrate；Step 2: mill ore magnetic selection: carrying out secondary grinding low intensity magnetic separation again；Step 3: dusting cover sieves: magnetic separation rough concentrate feeds dusting cover screening, feeds tower mill hierarchy system on sieve after subsequent concentration magnetic separator concentrating；Step 4: selected: it is selected to feed wash mill under dusting cover sieve；Step 5: filtering: wash mill concentrate enters concentrate filtration system and obtains high quality iron ore concentrate；Step 6: concentrate tower mill hierarchy system is regrinded after the magnetic separation of concentrated magnetic separator, and it is selected again that the product after regrinding returns again to wash mill after magnetic separation.The present invention had not only solved the problems, such as that concentrate upgrading drop was miscellaneous, but also reduced the loss of valuable mineral in cleaner tailings.
Description
Technical field
The present invention relates to technical field of beneficiation, it is related to a kind of chromium depleted zone upgrading and drops miscellaneous process.
Background technique
Under condition of market economy, iron and steel enterprise's future pursues higher economic benefit and profit, mentions to Iron Concentrate Quality
Increasingly higher demands are gone out.Currently, the primary quality measure of quality pellets mine has been increased to iron content >=66%, SiO in the world2
≤ 3%, P≤0.05% etc. requires higher SiO as the Iron grade of raw material iron ore concentrate main in pellet in this way2Content
It is lower, it only in this way could be blast furnace ironmaking improving environment economic indicator, realize that high quality and low cost creates conditions.
Since China has a large amount of magnetic fine powder to be suitble to pelletizing production, pellet production in China's is developed rapidly.The whole nation
The annual output of pellet has risen to 2.04 hundred million tons in 2011 from 17,840,000 in 2001 tons, and 10 year annual outputs increase
11.4 times.But the pelletizing production in Northern Europe and the U.S. is compared, there is also distinct issues for the quality of China's pellet, are mainly used for
The raw material preparation of pellet production is not smart, coarse size, SiO2Content is high, causes that finished pellet mine coarse size, grade be low, SiO2Contain
Amount is high, pellet quality is poor, has seriously affected using effect and status of the pellet in iron and steel enterprise.Therefore, improve China's ball
(emphasis is to upgrade and reduce SiO to the quality of nodulizing2Content), pellet high-grade, the advantage of the low quantity of slag are really played, is taken
The metallurgical effect for obtaining low consumption, environmental protection is the task of top priority that China develops pellet.
The pellet of China's production at present, the grade of most of finished product mines is relatively low, SiO2Content is higher (4~8%), causes
The slag iron of blast furnace ironmaking is not got off than drop, and this problem is mainly derived from the quality of Iron concentrate.And the grade of the Iron concentrate in China
And SiO2Content still has room for improvement.
In recent years, in order to mention Fe and reducing Si (miscellaneous), domestic dressing plant is to pursue and improve Iron Concentrate Quality, energy-saving and emission-reduction, increasing
Add economic benefit, develops suitable various types iron ore upgrading and drop miscellaneous, cost efficiency new technology, new process, new equipment and new
Medicament has achieved significant achievement.
Chinese Patent Application No. publication No.: CN105498929 (application number: 201610009784.3), discloses a kind of magnetic
Quality improvement and impurities reduction of iron concentrate technique and device.The invention by existing low-grade rough concentrate by grinding, closed circuit classification and magnetic separation, improve
Magnetite concentrate ferrous grade, is promoted to 63.5% or more by 60% or less, effectively reduces silicon, aluminium impurity content.In the presence of asking
Topic: all feeding vertical mixing mill for rough concentrate, do not account for sorting in advance, this causes the amount into grinding system to increase, and deposits
It is overground and waste the ore grinding energy the problem of.
It is existing using wash mill upgrading drop miscellaneous document have paper " certain dressing plant's magnetite concentrate upgrading drop silicon technology be transformed
Practice " (2 months the 2nd phases of " Modern Mineral " 2015 total 550th phases), this article is explained by taking Yunnan Yuxi's Dahongshan Concentrator as an example
It has stated to improve magnetite concentrate quality using Full automatic elutriation machine and carrying out commerical test, silicon effect drops in magnetite concentrate upgrading after transformation
Obviously, Iron grade is increased to 70.50%, SiO by 65.32%2Content is reduced to 2.2% by 5.13%, and low energy consumption, work
It is reliable and stable, reduce cost of labor.The document does not recycle the valuable mineral in tailing effectively, leads to tailing iron
Grade is higher, the iron ore concentrate rate of recovery reduces.
Chinese Patent Application No. publication No.: CN101850295A (application number: 201010177556.X) is disclosed a kind of low
The beneficiation method of grade magnetic iron ore production high quality iron ore concentrate.This method is that the side of cation reverse flotation is used to magnetic concentrate
The problems such as method obtains the iron ore concentrate of high quality, and that there are flotation is at high cost, floating agent effect on environment.
Summary of the invention
1. technical problems to be solved by the inivention
For the concentrate upgrading that low-ore grade magnetic iron ore exists in the prior art, miscellaneous middle SiO drops2Content is high, there are it is overground,
The low problem of the iron ore concentrate rate of recovery, the present invention provides a kind of chromium depleted zone upgradings to drop miscellaneous process.By by rough concentrate
Recycle wash mill selected after dusting cover screening, wash mill chats feeds tower grinding machine and carries out ore grinding, and the product after tower grinding machine ore grinding is given
Entering magnetic separator, to carry out weak magnetic selected, and the selected concentrate of weak magnetic returns to wash mill and carries out selected, had both solved that concentrate upgrading drop is miscellaneous to ask
Topic, and reduce the loss of valuable mineral in cleaner tailings.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
Miscellaneous process, step drop in a kind of chromium depleted zone upgrading are as follows:
Step 1: broken: to low-ore grade magnetic iron ore, the grade of raw iron ores is 15~20%, Armco magnetic iron in ore
Occupation rate 75~90%, carry out after Three stage crushing with single closed circuit stage to -20mm the granularity of 20mm (be less than), then carry out high pressure roller mill
Ultrafine grinding sieves fully closed road wet type pre-selecting to -3mm (granularity for being less than 3mm) rough concentrate；
Step 2: mill ore magnetic selection: carry out secondary grinding-classification-low intensity magnetic separation again, grinding fineness -0.075mm accounts for 75%~
85%, the magnetic separation Iron grade 61~63% of ore milling product；
Step 3: dusting cover sieves: magnetic separation rough concentrate feeds dusting cover screening, and dusting cover sieve pore is between 0.074~0.1mm, sieve
Upper product feeds tower mill hierarchy system after feeding subsequent concentration magnetic separator concentrating；
Step 4: selected: it is selected that dusting cover undersize feeds wash mill；
Step 5: filtering: wash mill concentrate enters concentrate filtration system and is filtered, and obtains high quality iron ore concentrate, Iron grade
66~68%；
Step 6: middling regrinding and reprocessing: the oversize (chats) of dusting cover and the overflow product (chats) of wash mill are through weak
It feeds tower grinding machine grinding classification system after magnetic separation concentration to regrind, the product after regrinding carries out low intensity magnetic separation.
Further technical solution, in secondary grinding-classification-low intensity magnetic separation in step 2,
(1) primary grinding weak magnetic separation process is passed through to -3mm the rough concentrate after the wet type pre-selecting after high pressure roller mill ultrafine grinding,
Obtain one section of low intensity magnetic separation rough concentrate, and tailing of dishing out；
(2) secondary grinding low intensity magnetic separation, and tailing of dishing out are passed through to one section of weak magnetic rough concentrate.
Further technical solution, in the magnetic field strength of wash mill, fixed magnetic field intensity is 80~90kA/m, circulation magnetic field
Intensity and compensation magnetic field strength are 70~80kA/m, and the flushing water of wash mill is the recirculated water in dressing plant, washing water quantity 2
~5m3/ ton is to mine.
Further technical solution in step 6, before wash mill chats feeds tower grinding machine ore grinding, first passes through concentration magnetic separator
Enter hydrocyclone after concentration, the sand setting of hydrocyclone enters tower grinding machine, and the ore discharge of tower grinding machine enters back into hydrocyclone
Classification, the overflow product of classification carry out low intensity magnetic separation, and it is selected that the concentrate of low intensity magnetic separation returns to wash mill progress.
Further technical solution, in step 6, tower grinding machine grinding fineness is -0.045mm content >=90%, hydraulic cyclone
The overflow product magnetic field strength of device is preferably selected in 95.54~119.43kA/m.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, have the following beneficial effects:
(1) miscellaneous process drops in a kind of chromium depleted zone upgrading of the invention, improves concentrate grade, reduces impurity and contain
Amount advantageously accounts for that subsequent finished pellet mine coarse size, grade be low, SiO the method increase concentrate quality2Content height, pelletizing
Mine problem of poor quality；The low-ore grade magnetic iron ore for being 15~20% for grade, pre- by high pressure roller mill ultrafine grinding wet type
After tail is thrown in choosing, then secondary grinding-classification-low intensity magnetic separation is carried out, obtains the rough concentrate of grade 61~63%, wash mill carries out dusting cover sieve again
Point-wash mill selected-wash mill chats pre-selection-tower mill the step of being classified closed circuit-magnetic separation, this technique may make the full iron product of Iron concentrate
Position improves 3 percentage points or more, improves to Iron grade 66~68%, moreover, the operation recovery (to rough concentrate) of iron is not less than
98%；
(2) miscellaneous process, three sections of ore grindings-classification-low intensity magnetic separation process drop in a kind of chromium depleted zone upgrading of the invention
In, tailing is dished out step by step, avoids the overground and waste ore grinding energy and Iron Grade of Tailings is higher, the reduction of the iron ore concentrate rate of recovery
Problem, it is ensured that valuable mineral effectively recycles, for 15~20% low-ore grade magnetic iron ore, can get TFe61~
63% magnetic concentrate；
(3) miscellaneous process drops in a kind of chromium depleted zone upgrading of the invention, and dusting cover oversize and wash mill chats are given
Enter tower grinding machine grind grading and magnetic separation, reduces the power consumption and steel ball consumption of ore grinding, improve grinding efficiency, further improve
The operation recovery of iron；
(4) miscellaneous process drops in a kind of chromium depleted zone upgrading of the invention, in the magnetic field strength of wash mill, fixed magnetic field
Intensity is 80~90kA/m, circulation magnetic field strength and compensation magnetic field strength are 70~80kA/m, and fixed magnetic field is arranged upper
Part constituency, it is higher, separate magnetic mineral with gangue, and control overflow (tailing/chats) grade；Recycle magnetic field and compensation magnetic
Field setting controls concentrate grade in lower part, and circulation magnetic field is pulsed magnetic field, plays the role of breaing up magnetic linkage；Compensation field strength plays
Eliminate the effect of magnetic field gradient；
(5) miscellaneous process, the concentrated magnetic separator of wash mill chats, waterpower drop in a kind of chromium depleted zone upgrading of the invention
After the collaboration of cyclone, tower grinding machine is handled, it is selected that the concentrate of low intensity magnetic separation returns again to wash mill progress, to improve iron recycling
Rate.
Detailed description of the invention
Fig. 1 is process equipment frame diagram of the invention；
Fig. 2 is process flow chart of the invention.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
Embodiment 1
Miscellaneous process, step drop in a kind of chromium depleted zone upgrading of the present embodiment are as follows:
Step 1: broken: to low-ore grade magnetic iron ore, the grade of raw iron ores is 15~20%, Armco magnetic iron in ore
Occupation rate 75~90%, gangue mineral is mainly albite, allochite, chlorite, actinolite etc., carry out being crushed to -20mm,
High pressure roller mill ultrafine grinding is carried out again sieves full closed circuit technique wet type pre-selecting technique to -3mm rough concentrate；
Step 2: mill ore magnetic selection: carrying out secondary grinding-classification-low intensity magnetic separation (i.e. secondary grinding magnetic separation at top in Fig. 1 again
Concentrate), specifically:
(1) primary grinding weak magnetic separation process is passed through to -3mm the rough concentrate after the wet type pre-selecting after high pressure roller mill ultrafine grinding,
Obtain one section of low intensity magnetic separation rough concentrate, and tailing of dishing out；
(2) to one section of weak magnetic rough concentrate pass through secondary grinding weak magnetic separation process, secondary grinding fineness -0.075mm75~
85%, iron concentrate grade 61~63% after magnetic separation；
Step 3: dusting cover sieves: magnetic separation rough concentrate feeds dusting cover and sieves, sieve pore 0.1mm, feeds subsequent concentration magnetic on sieve
Select machine；
Step 4: selected: it is selected to feed wash mill under dusting cover sieve；
Step 5: filtering: wash mill concentrate enters concentrate filtration system and obtains high quality iron ore concentrate, Iron grade 66~68%；
Step 6: wash mill chats feeds tower grinding machine grind grading and magnetic separation system；
Step 7: tower grinding machine ore milling product enters magnetic concentration working, magnetic concentrate return wash mill is selected, and magnetic separation tail of dishing out
Mine.
Miscellaneous process drops in a kind of chromium depleted zone upgrading of the present embodiment, by the way that rough concentrate is selected using wash mill,
Wash mill chats feeds tower grinding machine and carries out ore grinding, and the product after tower grinding machine ore grinding feeds magnetic separator selected, the weak magnetic essence that carries out weak magnetic
The concentrate return wash mill progress of choosing is selected, that is, solves the problems, such as that concentrate upgrading drop is miscellaneous, and reduce useful mine in cleaner tailings
The loss of object.
Embodiment 2
Miscellaneous process drops in a kind of chromium depleted zone upgrading of the present embodiment, and basic step is with embodiment 1: step are as follows:
Step 1: broken: to low-ore grade magnetic iron ore, the grade of raw iron ores is 17.28%, Armco magnetic iron in ore
Occupation rate 75~90%, Al2O3Content is by 2.43%, SiO2Content 6.82%, gangue mineral is mainly albite, allochite, green
Mudstone, actinolite etc. carry out being crushed to -20mm, then carry out high pressure roller mill ultrafine grinding sieve full closed circuit technique wet type pre-selecting to -
3mm rough concentrate；
Step 2: mill ore magnetic selection: secondary grinding-classification-low intensity magnetic separation is carried out again, specifically:
(1) primary grinding weak magnetic separation process is passed through to -3mm the rough concentrate after the wet type pre-selecting after high pressure roller mill ultrafine grinding,
Obtain one section of low intensity magnetic separation rough concentrate, and tailing of dishing out；
(2) secondary grinding low intensity magnetic separation, and tailing of dishing out are passed through to one section of weak magnetic rough concentrate.
It sorts to Iron grade TFe61.97%, grinding fineness -0.075mm and accounts for 80.50%；Below as shown in Figure 1, 2,
Step 3: dusting cover sieves: magnetic separation rough concentrate feeds dusting cover and sieves, screen size 0.074mm, feeds on sieve subsequent
Magnetic separator is concentrated；
Step 4: selected: it is selected to feed wash mill under dusting cover sieve；In the magnetic field strength of wash mill, fixed magnetic field intensity is
80~90kA/m, circulation magnetic field strength and compensation magnetic field strength are 70~80kA/m, the top sorting of fixed magnetic field setting
Area, it is higher, separate magnetic mineral with gangue, and control overflow (tailing/chats) grade；Recycle magnetic field and the setting of compensation magnetic field
In lower part, concentrate grade is controlled, circulation magnetic field is pulsed magnetic field, plays the role of breaing up magnetic linkage；Compensation field strength plays elimination magnetic
The effect of field gradient；
Step 5: filtering: wash mill concentrate enters concentrate filtration system, obtains high quality iron ore concentrate.
Step 6: wash mill chats feeds tower grinding machine grinding classification system.
Miscellaneous process drops in a kind of chromium depleted zone upgrading of the present embodiment, can get the iron essence of full Iron grade 66.1%
Mine, iron concentrate grade improve 4.13 percentage points, and TFe operation recovery (to rough concentrate) is 98.4%, wherein Al2O3Content by
2.43% is down to 1.32%, SiO2Content is down to 3.69% by 6.82%.
Embodiment 3
Miscellaneous process drops in a kind of chromium depleted zone upgrading of the present embodiment, and basic structure is the same as embodiment 2, different and improvement
Place is: step are as follows:
Step 1: broken: to low-ore grade magnetic iron ore, the grade of raw iron ores is 18.51%, Armco magnetic iron in ore
Occupation rate 75~90%, Al2O3Content 2.35%, SiO2Content 6.08%, gangue mineral are mainly albite, allochite, green mud
Stone, actinolite etc. carry out being crushed to -20mm, then carry out high pressure roller mill ultrafine grinding and sieve full closed circuit technique wet type pre-selecting to -3mm
Rough concentrate；
Step 2: mill ore magnetic selection: secondary grinding low intensity magnetic separation is carried out again, specifically:
(1) primary grinding low intensity magnetic separation, and tailing of dishing out are carried out to wet type pre-selecting -3mm rough concentrate；
(2) secondary grinding low intensity magnetic separation, and tailing of dishing out are carried out to one section of weak magnetic rough concentrate；
Iron grade is 63.24% after grinding fineness -0.075mm86.50%, ore milling product and low intensity magnetic separation；Below such as Fig. 1,2
It is shown,
Step 3: dusting cover sieves: magnetic separation rough concentrate feeds dusting cover and sieves, screen size 0.1mm, feeds on sieve subsequent dense
Contracting magnetic separator；
Step 4: selected: it is selected to feed wash mill under dusting cover sieve；
Step 5: filtering: wash mill concentrate enters concentrate filtration system, obtains high quality iron ore concentrate.
Step 6: wash mill chats feeds tower grinding machine grind grading and magnetic separation system；
Step 7: ore milling product, Grading Overflow feeds magnetic separator magnetic separation, and magnetic concentrate is sold as concentrate, magnetic tailing
Into Tailing thickening system.
Miscellaneous process drops in a kind of chromium depleted zone upgrading of the present embodiment, and the grade to raw iron ores is 20% or less
Magnetic iron ore, by secondary grinding-classification-low intensity magnetic separation and dusting cover screening-wash mill selected-wash mill chats pre-selection-tower mill point
The synergistic effect of the closed circuit-magnetic separation of grade, can get the iron ore concentrate of full Iron grade 66.8%, and iron concentrate grade improves 3.56 percentages
Point, Iron Grade of Tailings 8.5%, TFe operation recovery (opposite rough concentrate) is 98.6%, Al2O3Content is down to by 2.35% content
1.51%, SiO2Content 6.08% is by being down to 3.46%.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (5)
1. miscellaneous process drops in a kind of chromium depleted zone upgrading, which is characterized in that step are as follows:
Step 1: broken: to low-ore grade magnetic iron ore, the grade of raw iron ores is 15~20%, and Armco magnetic iron accounts in ore
There is a rate 75~90%, carry out after Three stage crushing with single closed circuit stage to -20mm, then carries out high pressure roller mill ultrafine grinding to sieve fully closed road wet type pre-
Choosing extremely -3mm rough concentrate；
Step 2: mill ore magnetic selection: secondary grinding-classification-low intensity magnetic separation is carried out again, grinding fineness -0.075mm accounts for 75%~85%,
The magnetic separation Iron grade 61~63% of ore milling product；
Step 3: dusting cover sieves: magnetic separation rough concentrate feeds dusting cover screening, and dusting cover sieve pore produces on sieve between 0.074~0.1mm
Product feed tower mill hierarchy system after feeding subsequent concentration magnetic separator concentrating；
Step 4: selected: it is selected that dusting cover undersize feeds wash mill；
Step 5: filtering: wash mill concentrate enters concentrate filtration system and is filtered, and obtains high quality iron ore concentrate, Iron grade 66~
68%；
Step 6: middling regrinding and reprocessing: the oversize of dusting cover and the overflow product of wash mill feed tower after low intensity magnetic separation is concentrated
Grinding machine grinding classification system is regrinded, and the product after regrinding carries out low intensity magnetic separation.
2. miscellaneous process drops in chromium depleted zone upgrading according to claim 1, it is characterised in that: two sections in step 2
In ore grinding-classification-low intensity magnetic separation,
(1) primary grinding weak magnetic is passed through to -3mm the rough concentrate after high pressure roller mill ultrafine grinding sieves full closed circuit technique wet type pre-selecting
Technique is selected, one section of low intensity magnetic separation rough concentrate, and tailing of dishing out are obtained；
(2) secondary grinding low intensity magnetic separation, and tailing of dishing out are passed through to one section of weak magnetic rough concentrate.
3. miscellaneous process drops in chromium depleted zone upgrading according to claim 1, it is characterised in that: the magnetic of the wash mill
In field intensity, fixed magnetic field intensity is 80~90kA/m, circulation magnetic field strength and compensation magnetic field strength are 70~80kA/m,
The flushing water of wash mill is the recirculated water in dressing plant, and washing water quantity is 2~5m3/ ton is to mine.
4. miscellaneous process drops in chromium depleted zone upgrading according to claim 1, it is characterised in that: in step 6, eluriate
Before machine chats feeds tower grinding machine ore grinding, enter hydrocyclone, the sand setting of hydrocyclone after first passing through concentration magnetic separator concentrating
Into tower grinding machine, the ore discharge of tower grinding machine enters back into hydroclone classification, and the overflow product of classification carries out low intensity magnetic separation, low intensity magnetic separation
It is selected that concentrate returns to wash mill progress.
5. miscellaneous process drops in chromium depleted zone upgrading according to claim 4, it is characterised in that: in step 6, tower mill
Machine grinding fineness is -0.045mm, content >=90%, the overflow product magnetic field strength of hydrocyclone preferably selects 95.54~
119.43kA/m。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810685599.5A CN108993764A (en) | 2018-06-28 | 2018-06-28 | Miscellaneous process drops in a kind of chromium depleted zone upgrading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810685599.5A CN108993764A (en) | 2018-06-28 | 2018-06-28 | Miscellaneous process drops in a kind of chromium depleted zone upgrading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108993764A true CN108993764A (en) | 2018-12-14 |
Family
ID=64601400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810685599.5A Pending CN108993764A (en) | 2018-06-28 | 2018-06-28 | Miscellaneous process drops in a kind of chromium depleted zone upgrading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108993764A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482338A (en) * | 2018-12-21 | 2019-03-19 | 马钢集团矿业有限公司 | A kind of beneficiation method of the narrow gradation of magnetic iron ore, the independent ore grinding of chats |
| CN109746104A (en) * | 2019-02-11 | 2019-05-14 | 鞍钢集团矿业有限公司 | A magnetite crushing-pre-selection-grinding process |
| CN109876924A (en) * | 2019-03-09 | 2019-06-14 | 大连地拓环境科技有限公司 | Resource utilization method of boric sludge |
| CN110694789A (en) * | 2019-11-18 | 2020-01-17 | 安徽马钢矿业资源集团有限公司 | Ore dressing method for magnetite |
| CN110860365A (en) * | 2019-11-26 | 2020-03-06 | 马鞍山市天工科技股份有限公司 | The beneficiation method and device for improving quality and reducing impurities of low-grade fine-grained embedded magnetite |
| CN111729756A (en) * | 2020-07-07 | 2020-10-02 | 中冶北方（大连）工程技术有限公司 | Anshan type low-grade magnetite tailing recovery process |
| CN113877718A (en) * | 2021-10-14 | 2022-01-04 | 包钢集团矿山研究院（有限责任公司） | Beneficiation method for recovering high-grade iron ore concentrate from iron-containing waste rock of refuse dump |
| CN114417232A (en) * | 2021-12-24 | 2022-04-29 | 鞍钢集团矿业有限公司 | A method for determining reasonable concentrate grade in magnetic separation-fine screen regrinding process |
| CN114798159A (en) * | 2022-04-28 | 2022-07-29 | 包头钢铁（集团）有限责任公司 | Ore grading process |
| CN115121369A (en) * | 2022-06-10 | 2022-09-30 | 包头钢铁（集团）有限责任公司 | A process for water recycling in elutriation magnetic separator system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120027660A1 (en) * | 2008-12-31 | 2012-02-02 | Memc Electronic Materials, Inc. | Methods to recover and purify silicon particles from saw kerf |
| CN102489387A (en) * | 2011-12-21 | 2012-06-13 | 鞍钢集团矿业设计研究院 | Extremely lean magnetite beneficiating process |
| CN204338314U (en) * | 2014-11-26 | 2015-05-20 | 石家庄金垦科技有限公司 | Full automatic elutriation magnetic separation, magnetic flotation all-in-one |
| CN106824508A (en) * | 2017-01-10 | 2017-06-13 | 中冶北方（大连）工程技术有限公司 | A kind of broken mill ore magnetic selection technique of magnetic iron ore |
| CN107398344A (en) * | 2017-04-28 | 2017-11-28 | 安徽马钢工程技术集团有限公司 | Miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading |
| CN107413517A (en) * | 2017-07-27 | 2017-12-01 | 中钢集团马鞍山矿山研究院有限公司 | A kind of beneficiation method for improving micro fine particle magnetite stone stage grinding and stage separation sorting index |
| CN206701482U (en) * | 2017-03-10 | 2017-12-05 | 石家庄金垦科技有限公司 | A kind of new elutriation magnetic separator |
-
2018
- 2018-06-28 CN CN201810685599.5A patent/CN108993764A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120027660A1 (en) * | 2008-12-31 | 2012-02-02 | Memc Electronic Materials, Inc. | Methods to recover and purify silicon particles from saw kerf |
| CN102489387A (en) * | 2011-12-21 | 2012-06-13 | 鞍钢集团矿业设计研究院 | Extremely lean magnetite beneficiating process |
| CN204338314U (en) * | 2014-11-26 | 2015-05-20 | 石家庄金垦科技有限公司 | Full automatic elutriation magnetic separation, magnetic flotation all-in-one |
| CN106824508A (en) * | 2017-01-10 | 2017-06-13 | 中冶北方（大连）工程技术有限公司 | A kind of broken mill ore magnetic selection technique of magnetic iron ore |
| CN206701482U (en) * | 2017-03-10 | 2017-12-05 | 石家庄金垦科技有限公司 | A kind of new elutriation magnetic separator |
| CN107398344A (en) * | 2017-04-28 | 2017-11-28 | 安徽马钢工程技术集团有限公司 | Miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading |
| CN107413517A (en) * | 2017-07-27 | 2017-12-01 | 中钢集团马鞍山矿山研究院有限公司 | A kind of beneficiation method for improving micro fine particle magnetite stone stage grinding and stage separation sorting index |
Non-Patent Citations (3)
| Title |
|---|
| 杨海龙等: ""全自动淘洗磁选机在提铁降杂工程中的应用"", 《矿业工程》 * |
| 赵福刚: ""淘洗磁选机在我国铁矿选别中的应用"", 《现代矿业》 * |
| 魏建民等: ""全自动淘洗机的应用及选别机理"", 《现代矿业》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482338A (en) * | 2018-12-21 | 2019-03-19 | 马钢集团矿业有限公司 | A kind of beneficiation method of the narrow gradation of magnetic iron ore, the independent ore grinding of chats |
| CN109746104A (en) * | 2019-02-11 | 2019-05-14 | 鞍钢集团矿业有限公司 | A magnetite crushing-pre-selection-grinding process |
| CN109876924A (en) * | 2019-03-09 | 2019-06-14 | 大连地拓环境科技有限公司 | Resource utilization method of boric sludge |
| CN109876924B (en) * | 2019-03-09 | 2020-08-28 | 大连地拓环境科技有限公司 | A kind of boron mud resource utilization method |
| CN110694789A (en) * | 2019-11-18 | 2020-01-17 | 安徽马钢矿业资源集团有限公司 | Ore dressing method for magnetite |
| CN110860365A (en) * | 2019-11-26 | 2020-03-06 | 马鞍山市天工科技股份有限公司 | The beneficiation method and device for improving quality and reducing impurities of low-grade fine-grained embedded magnetite |
| CN111729756A (en) * | 2020-07-07 | 2020-10-02 | 中冶北方（大连）工程技术有限公司 | Anshan type low-grade magnetite tailing recovery process |
| CN113877718A (en) * | 2021-10-14 | 2022-01-04 | 包钢集团矿山研究院（有限责任公司） | Beneficiation method for recovering high-grade iron ore concentrate from iron-containing waste rock of refuse dump |
| CN114417232A (en) * | 2021-12-24 | 2022-04-29 | 鞍钢集团矿业有限公司 | A method for determining reasonable concentrate grade in magnetic separation-fine screen regrinding process |
| CN114417232B (en) * | 2021-12-24 | 2025-02-28 | 鞍钢集团矿业有限公司 | A method for determining reasonable concentrate grade in magnetic separation-fine screening and regrinding process |
| CN114798159A (en) * | 2022-04-28 | 2022-07-29 | 包头钢铁（集团）有限责任公司 | Ore grading process |
| CN115121369A (en) * | 2022-06-10 | 2022-09-30 | 包头钢铁（集团）有限责任公司 | A process for water recycling in elutriation magnetic separator system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108993764A (en) | Miscellaneous process drops in a kind of chromium depleted zone upgrading | |
| CN104923386B (en) | The pre-selection of fine grain teeth cloth composite ore coarse grain, magnetic-weight sorting process | |
| CN102205273B (en) | Beneficiation process of low-grade magnetite and specularite mixed ore | |
| CN101502819B (en) | Pre-selection method of low-ore grade magnetic iron ore | |
| CN101491789B (en) | Beneficiation process of mixed dregs using three copper smelting methods of flash smelting furnace, revolving furnace and depletion electric furnace | |
| CN106000639B (en) | A kind of Copper making converter residues processing technique containing high-grade matte | |
| CN103736588B (en) | Efficient beneficiation method of comprehensively recovering low-grade vanadium titano-magnetite | |
| CN107398344B (en) | Mineral processing technology for improving quality and reducing impurities of high-sulfur composite iron ore | |
| CN104874462A (en) | Coarse grain pre-selection and magnetic-floating separation process for mixed ores with embedded micro-fine particles | |
| CN108855584A (en) | A kind of difficulty selects the ore-dressing technique of producing high-quality iron ore concentrate by low-grade magnetic iron ore | |
| CN102773161A (en) | Magnetic-gravity combined ore dressing technology for hematite | |
| CN102228863B (en) | Novel separation process of multi-metal lean hematite | |
| CN109158222A (en) | A kind of echelon fast-flotation process of copper converter slag ore dressing | |
| CN106475219B (en) | A kind of method for removing iron of alumyte flotation tailings | |
| CN105855019A (en) | Ultrafine crushing-grading magnetic separation method for magnetite | |
| CN106944248B (en) | A kind of beneficiation method of the compound iron ore of hydrochlorate containing high-carbon | |
| CN109746104A (en) | A magnetite crushing-pre-selection-grinding process | |
| CN107321495A (en) | A kind of beneficiation method of high efficiente callback particulate low-grade magnetite | |
| CN108970800B (en) | Beneficiation process for reducing content of silicon dioxide in iron ore concentrate | |
| CN102773150A (en) | Polymetallic (iron, tin and zinc) ore comprehensive recovery beneficiation method | |
| CN111068897A (en) | A fine particle magnetite beneficiation process | |
| CN108993760B (en) | Weathered low-grade refractory manganese ore sorting process | |
| CN112024120B (en) | Beneficiation method for micro-fine-particle-grade hematite and limonite | |
| CN107029868A (en) | A kind of composite ore high pressure roller mill, double media, the red ore deposit sorting process of magnetic | |
| CN107790283B (en) | A kind of amphibole type proto culture sorting process |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181214 |