CN102631983A - Process for sorting poor hematite rough particles - Google Patents
Process for sorting poor hematite rough particles Download PDFInfo
- Publication number
- CN102631983A CN102631983A CN2012101241167A CN201210124116A CN102631983A CN 102631983 A CN102631983 A CN 102631983A CN 2012101241167 A CN2012101241167 A CN 2012101241167A CN 201210124116 A CN201210124116 A CN 201210124116A CN 102631983 A CN102631983 A CN 102631983A
- Authority
- CN
- China
- Prior art keywords
- grade
- percent
- fine
- concentrate
- rough
- 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
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a process for sorting poor hematite rough particles. The process comprises the following steps of: performing stage grinding and sorting rough and fine particles. The method is characterized in that according to the rough and fine particle sorting step, 40 to 50 percent of deposited sand of -200 meshes in the grade of 35 to 40 percent in rough and fine grading work is fed into a spiral sliding chute, spiral sliding chute fine ores in the grade of 55 to 60 percent are fed into an undersize sieve, and sieved products in the grade of 65 to 67 percent are used as final fine ores; tailings of the spiral sliding chute are sorted through middle magnetic work; tailings of the middle magnetic work are fed into high magnetic work for removing the tailings in the grade of 8 to 14 percent; middle magnetic fine ores, high magnetic fine ores and products on the undersize sieve are fed into secondary grading work; secondarily graded deposited sand is fed into a stirring grinder; ores discharged by the stirring grinder are returned to the secondary grading work; and 65 to 75 percent of secondarily graded overflow of -200 meshes in the grade of 40 to 45 percent is returned to the rough and fine grading work. The process provided by the invention has the advantages that the process flow is simplified and is stable and convenient to control.
Description
Technical field
The invention belongs to iron ore and sort technical field, especially relate to a kind of lean hematite cobbing technology.
Background technology
The Anshan type lean hematite ore is the important iron ore type of China, and at present stage grinding, coarse and fine separation, gravity treatment-strong magnetic-anion reverse floatation technologies of adopting are carried out ore dressing production more.The scalping overflow is divided into thick, thin two kinds of products through the thickness grading operation.Fine fraction is thrown tail after feed flotation operation after concentrating by strong magnetic operation, selects flotation concentrate, the jettisoning flotation tailing.The coarse component sorting process is following: thickness grading operation sand setting feeds thick spiral shell operation, and thick spiral shell concentrate feeds smart spiral shell operation, selects gravity concentrate, and the self-loopa of smart spiral shell chats is returned.Thick spiral shell mine tailing is through sweeping spiral shell, permanent magnetism, middle magnetic operation sorting; Abandon mine tailing; Sweep spiral shell concentrate, permanent magnetism concentrate, middle magnetic concentrate and smart spiral shell mine tailing and feed the secondary graded operation, the sand setting of secondary classification feeds the secondary ball milling operation, and ball milling ore discharge and secondary classification overflow mix returns the thickness grading operation.The coarse component sorting process is seen accompanying drawing 1.
Not enough below this technological process exists: the one, because spiral chute is to carry out sorting according to the proportion and the granularity difference of mineral; Gravity concentrate is that smart spiral shell operation concentrate is that the smart spiral shell layering of intercepting divides band back inner edge product-fine grain high-grade concentrate and coarse grained rich intergrowth to obtain; Its grade only can reach 63.5～66.2%, has limited the further raising of comprehensive concentrate grade; The 2nd, secondary grinding adopts open-circuit grinding, and the secondary ball milling grinding efficiency is not good in addition, causes secondary ball milling ore discharge and secondary classification overflow product mix granularity thicker, and-200 order content are merely 50～65%, and fluctuation is bigger; The 3rd, thick spiral shell mine tailing is abandoned mine tailing through sweeping spiral shell, permanent magnetism, middle magnetic operation, and flow process is longer.
Some selects factory after smart spiral shell operation, to increase the dusting cover operation, feeds the secondary graded operation on the sieve.The sieve essence brings up to 65～67%, but the new problem of having brought the growth of sorting flow process, operation and equipment to increase.
Summary of the invention
The purpose of this invention is to provide the lean hematite cobbing technology that a kind of technology is simple, stablize, be convenient to control, with the concentrate grade of raising coarse grain operation and the stability of index.
The objective of the invention is to realize through following technical proposals:
According to lean hematite cobbing technology of the present invention; Comprise stage grinding, coarse and fine separation, it is characterized in that: described coarse and fine separation is that the thickness grading operation sand setting with-200 order content 40～50%, grade 35～40% feeds the spiral chute operation, and the spiral chute concentrate of grade 55～60% feeds the dusting cover operation; The undersize of grade 65～67% is as final concentrate; Magnetic operation sorting in the mine tailing warp of spiral chute, middle magnetic operation mine tailing feeds strong magnetic operation, and the mine tailing of grade 8～14% is abandoned in strong magnetic operation; Middle magnetic concentrate, strong magnetic concentrate and dusting cover oversize feed the secondary graded operation; The sand setting of secondary classification feeds agitator mill, and the ore discharge of agitator mill returns the secondary graded operation, and the secondary classification overflow of-200 order content 65～75%, grade 40～45% turns back to the coarse and fine separation operation.
Advantage of the present invention:
This technology is compared with existing technology, and its advantage is:
1, simplifies technological process, and stablized, be convenient to control;
2, this technology has been given full play to the characteristics that dusting cover carries out sorting in strict accordance with the granularity difference, and the dusting cover concentrate grade can reach 65～67%;
3, secondary classification overflow-200 order content can bring up to 65～75%, and granularity is comparatively stable, helps the stable and improvement of index of whole flow process.
Description of drawings
Fig. 1 is former bloodstone roasting, stage grinding, middle magnetic, thickness grading, weight-magnetic process chart.
Fig. 2 sets up gravity treatment-sieving technology flow chart for before the hematite reverse flotation operation of the present invention.
The specific embodiment
Further specify the specific embodiment of the present invention below in conjunction with accompanying drawing.
Embodiment
As shown in Figure 2; Lean hematite cobbing technology of the present invention; Comprise stage grinding, coarse and fine separation, it is characterized in that: described coarse and fine separation is that the thickness grading operation sand setting with-200 order content 40～50%, grade 35～40% feeds the spiral chute operation, and the spiral chute concentrate of grade 55～60% feeds the dusting cover operation; The screen analysis result that thick spiral shell concentrate is carried out shows: along with granularity from the coarse to fine, the grade grade progressively raises.Therefore, can adopt dusting cover that thick spiral shell concentrate is directly carried out sorting; The undersize of grade 65～67% is as final concentrate; Magnetic operation sorting in the mine tailing warp of spiral chute, middle magnetic operation mine tailing feeds strong magnetic operation, and the mine tailing of grade 8～14% is abandoned in strong magnetic operation; Middle magnetic concentrate, strong magnetic concentrate and dusting cover oversize feed the secondary graded operation; The sand setting of secondary classification feeds agitator mill, and the ore discharge of agitator mill returns the secondary graded operation, and the secondary classification overflow of-200 order content 65～75%, grade 40～45% turns back to the coarse and fine separation operation.Agitator mill is the efficient grinding attachment of applying at present, and its input power directly is used for the rabbling mechanism rotation, makes the abrasive media motion and comminuting matter.Replace ball mill can obviously improve the secondary grinding effect with agitator mill.
The present invention at first adopts the dusting cover operation to replace selected spiral chute operation, and the operation product also is reduced to 2 by 3; The 2nd, thick spiral shell mine tailing sorting process is reduced to middle magnetic, strong two sections operations of magnetic by sweeping spiral shell, permanent magnetism, three sections operations of middle magnetic; The 3rd, secondary grinding adopts closed circuit grinding, and ore milling product feeds the secondary graded operation; The 4th, secondary grinding equipment adopts agitator mill to replace ball mill.
Claims (1)
1. lean hematite cobbing technology; Comprise stage grinding, coarse and fine separation, it is characterized in that: described coarse and fine separation is that the thickness grading operation sand setting with-200 order content 40～50%, grade 35～40% feeds the spiral chute operation, and the spiral chute concentrate of grade 55～60% feeds the dusting cover operation; The undersize of grade 65～67% is as final concentrate; Magnetic operation sorting in the mine tailing warp of spiral chute, middle magnetic operation mine tailing feeds strong magnetic operation, and the mine tailing of grade 8～14% is abandoned in strong magnetic operation; Middle magnetic concentrate, strong magnetic concentrate and dusting cover oversize feed the secondary graded operation; The sand setting of secondary classification feeds agitator mill, and the ore discharge of agitator mill returns the secondary graded operation, and the secondary classification overflow of-200 order content 65～75%, grade 40～45% turns back to the coarse and fine separation operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101241167A CN102631983A (en) | 2012-04-26 | 2012-04-26 | Process for sorting poor hematite rough particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101241167A CN102631983A (en) | 2012-04-26 | 2012-04-26 | Process for sorting poor hematite rough particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102631983A true CN102631983A (en) | 2012-08-15 |
Family
ID=46616666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101241167A Pending CN102631983A (en) | 2012-04-26 | 2012-04-26 | Process for sorting poor hematite rough particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102631983A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145294A (en) * | 2021-04-02 | 2021-07-23 | 中钢天源安徽智能装备股份有限公司 | Chromite beneficiation system and beneficiation process |
| CN113385299A (en) * | 2021-05-28 | 2021-09-14 | 鞍钢集团矿业有限公司 | Magnetic-gravity-magnetic combined ore dressing process for treating lean magnetite ore |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548234A (en) * | 2003-05-23 | 2004-11-24 | 鞍钢集团鞍山矿业公司研究所 | Ore dressing process of treating poor hematite |
| CN101274301A (en) * | 2007-03-27 | 2008-10-01 | 鞍钢集团矿业公司 | Process of gravity separation, fine sieve and reconcentration for lean hematite |
| RU2364446C2 (en) * | 2007-07-02 | 2009-08-20 | Олег Акимович Свистельник | Method of magnetic ore dressing |
| CN102019229A (en) * | 2009-09-18 | 2011-04-20 | 鞍钢集团矿业公司 | Novel process from magnetic-hematite strong magnetic fine sieve reelection returning to floatation operation |
| CN102284359A (en) * | 2011-08-08 | 2011-12-21 | 鞍钢集团矿业公司 | Process for roasting, stage grinding, coarse-fine grading and reselection-magnetic separation of hematite |
-
2012
- 2012-04-26 CN CN2012101241167A patent/CN102631983A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548234A (en) * | 2003-05-23 | 2004-11-24 | 鞍钢集团鞍山矿业公司研究所 | Ore dressing process of treating poor hematite |
| CN101274301A (en) * | 2007-03-27 | 2008-10-01 | 鞍钢集团矿业公司 | Process of gravity separation, fine sieve and reconcentration for lean hematite |
| RU2364446C2 (en) * | 2007-07-02 | 2009-08-20 | Олег Акимович Свистельник | Method of magnetic ore dressing |
| CN102019229A (en) * | 2009-09-18 | 2011-04-20 | 鞍钢集团矿业公司 | Novel process from magnetic-hematite strong magnetic fine sieve reelection returning to floatation operation |
| CN102284359A (en) * | 2011-08-08 | 2011-12-21 | 鞍钢集团矿业公司 | Process for roasting, stage grinding, coarse-fine grading and reselection-magnetic separation of hematite |
Non-Patent Citations (1)
| Title |
|---|
| 王世标: "印度某赤铁矿洗矿溢流选矿试验", 《金属矿山》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145294A (en) * | 2021-04-02 | 2021-07-23 | 中钢天源安徽智能装备股份有限公司 | Chromite beneficiation system and beneficiation process |
| CN113385299A (en) * | 2021-05-28 | 2021-09-14 | 鞍钢集团矿业有限公司 | Magnetic-gravity-magnetic combined ore dressing process for treating lean magnetite ore |
| CN113385299B (en) * | 2021-05-28 | 2022-06-14 | 鞍钢集团矿业有限公司 | Magnetic-gravity-magnetic combined ore dressing process for treating lean magnetite ore |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104174482B (en) | A kind of lean hematite ore-dressing technique | |
| CN101468330B (en) | Technique for processing mixed type iron ore | |
| CN101664715B (en) | Ore-dressing technique capable of effectively improving comprehensive utilization rate of mine resources | |
| CN101559403B (en) | Method for concentrating extremely low-grade refractory magnetite | |
| CN104874459B (en) | Useless ore-dressing technique is thrown in a kind of low-grade magnetite pre-selection | |
| CN101927209B (en) | Benefication technology of extra poor hematite | |
| CN105855019B (en) | Ultrafine crushing-grading magnetic separation method for magnetite | |
| CN104959228B (en) | Lean magnetite beneficiation method capable of reducing fineness of grinding ore | |
| CN101439314B (en) | Ore concentration technique for laterite nickel ore rich in nickel and/or cobalt | |
| CN104258980B (en) | A kind of uranium-bearing paigeite sorting process | |
| CN109351467A (en) | A kind of sorting process based on the iron mineral disseminated grain size processing red mixed ore of magnetic | |
| CN109675712B (en) | Mineral processing technology for treating high-sulfur hematite-magnetic mixed iron ore | |
| CN102631984B (en) | Hematite roasting, stage grinding, intermediate magnetic separation, coarse and fine separation, gravity concentration-magnetic separation technique | |
| CN102019227A (en) | Lean hematite stage grinding and high intensity magnetism, gravity separation, negative ion reverse flotation technique | |
| CN102527504A (en) | Magnetic ore dressing method | |
| CN113941433B (en) | Ore dressing method for cascade recovery and segmented tailing discarding of low-grade chromite | |
| CN102228863B (en) | Novel separation process of multi-metal lean hematite | |
| CN106269204A (en) | A kind of energy saving technique processing extreme poverty bloodstone wet type pre-selecting rough concentrate | |
| CN102284359B (en) | Process for roasting, stage grinding, coarse-fine grading and reselection-magnetic separation of hematite | |
| CN109894268A (en) | A kind of wolframite throwing tail proposes the beneficiation method of essence | |
| CN106492977A (en) | The strong magnetic reverse floatation process of lean hematite high pressure roller mill, weak magnetic | |
| CN106000597B (en) | Single magnetic separation-the magnetic of chromium depleted zone shakes machine sorting process | |
| CN101927236A (en) | Lean hematite technology combining dressing-fine screening and shaking table gravity separation | |
| CN107597411B (en) | A kind of raising high-sulfur magnetic-red compound iron ore sorting index beneficiation method | |
| CN108114805A (en) | A kind of lean hematite stage grinding-magnetic separation shifts to an earlier date process for discarding tailings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120815 |