CN104874459B - Useless ore-dressing technique is thrown in a kind of low-grade magnetite pre-selection - Google Patents
Useless ore-dressing technique is thrown in a kind of low-grade magnetite pre-selection Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
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Abstract
Useless ore-dressing technique is thrown the invention discloses a kind of pre-selection of low-grade magnetite, its processing step is：Coarse crushing, in the screening of broken, first paragraph, first paragraph pre-selection throw useless, in small, broken bits, ultrafine grinding, second segment screening, second segment pre-selection and throw and give up.Raw ore is thick, in it is broken after sift out three products through first paragraph, first paragraph oversize preselected through first paragraph throw it is useless after concentrate carry out in small, broken bits, formation closed cycle in small, broken bits；Product returns to second segment screening with second segment oversize after ultrafine grinding in first paragraph sieve, forms ultrafine grinding closed cycle；First paragraph undersize and the progress second segment pre-selection of second segment undersize throw useless, and it is true tailings that the mine tailing after first paragraph pre-selection throwing is useless, which preselects with second segment and throws the mine tailing after giving up,；It is final products that the concentrate after giving up is thrown in second segment pre-selection.The present invention can discard most of barren rock, reduce into ore grinding amount, improve iron ore and enter to grind grade, it is possible to decrease energy consumption and steel ball consumption, be conducive to the exploitation of low-grade magnetite ore, expand resource utilization.
Description
Technical field
Crushed the invention belongs to ore-dressing technique and Preconcentration Technology field, more particularly to a kind of low-grade magnetite pre-selection throws useless
Ore-dressing technique.
Background technology
China's iron ore deposit feature is：Resource gross reserves is big, but lean ore is more, and rich ore is few.The average iron product of China's iron ore deposit
Position only has 33% (iron ore big export country grade is 55%~65% in the world), and high-grad iron ore deposit reserves are poor less than 5%, more than 95%
Iron ore need to can just send blast furnace process after beneficiation enrichment.In addition, ore can be mixed into a certain amount of country rock in recovery process.Cause
This, iron ore of low ore grade such as complete process is broken, ore grinding, sort, the process such as the last person will cause the increase of ore dressing expense cost, and
Country rock easy argillization in grinding process, will influence the raising of iron concentrate grade.
The utilization rate of China's low-grade iron ore resource is improved, reduction mineral processing production cost is crucial.There are two key points can
Reduce the beneficiation cost of low-grade iron ore：
(1) much broken and lessmill：In metal mine production, energy consumption and steel consumption account for the 60%~70% of ore dressing plant production cost,
Therefore, in Designing Ore-Dressing Plants, the selection of rock processing influences very big to production cost.Due to crushing the ore ratio of same granularity
Energy consumption much less used in ore grinding, therefore " much broken and lessmill " technology is always one of domestic and international Mineral Processing Industry focus of attention.Mesh
Before, at home and abroad in ore dressing crushing process technology, big-and-middle-sized ore dressing plant all uses Three stage crushing with single closed circuit stage technique substantially, crushes most
Finished product granularity d95Usually -12mm.A part of small-sized ore dressing plant uses two sections of open circuit crushings or two sections of closed circuit crushing techniques, breaks
Broken final products granularity d95Usually -20mm.
(2) early throwing can be thrown：Thrown before ore grinding and remove barren rock, improved iron ore and enter to grind grade, realize the energy-saving of ore dressing plant,
Reduce beneficiation cost.It is existing to select the useless technique of factory's throwing pre- using one section of dry type magnetic pulley mainly in two sections or three sections of crushing process
Choosing throws useless or one section of dry-type magnetic extractor and throws useless.The shortcoming of existing process is：Its ore grain size after raw ore is crushed through two sections or three sections
Also larger, ore degree of dissociation is inadequate, it is difficult to reach that satisfied throwing is given up effect.
The content of the invention
In view of the above-mentioned problems, throwing useless ore-dressing technique it is an object of the invention to provide a kind of pre-selection of low-grade magnetite, realize
It is much broken and lessmill, energy-saving；Thrown through lump ore and fine ore two stages of magnetic separation after giving up, remove most of barren rock, reduced into ore grinding amount, improve
Enter and grind iron ore grade, the type selecting of the follow-up mill optional equipment of reduction, and then construction investment and the reduction of ore grinding amount are reduced, it is further real
It is existing energy-saving, reduce beneficiation cost.
The present invention is achieved through the following technical solutions above-mentioned purpose.Useless ore-dressing technique is thrown in a kind of low-grade magnetite pre-selection,
It is characterized in that：Its processing step is as follows：
1) coarse crushing:Low-grade raw iron ores from stope are transported to the crude ore bin for selecting factory's coarse crushing workshop, then through rod
Bar batcher is divided into lump ore on the upper lump ore of sieve and minus sieve ore deposit, sieve and feeds jaw crusher progress coarse crushing, and its product A gives with rod
The minus sieve ore deposit of material machine broken product storage bin in being transported in the lump；
2) it is broken in：In ore in broken product storage bin fed through belt feeder in broken gyratory crusher carry out in it is broken, its
Product B is transported to preceding first paragraph screening product storage bin in small, broken bits in the lump with products C in small, broken bits；
3) first paragraph is sieved：Ore in first paragraph screening product storage bin feeds circular vibrating screen through oscillating feeder and carries out first
Product and first paragraph undersize in section screening, output first paragraph oversize, first paragraph sieve；
4) first paragraph pre-selection throws useless：First paragraph oversize feeds magnetic pulley progress first paragraph pre-selection and throws useless, and first paragraph is pre-
Mine tailing after choosing throwing is useless preselects the mine tailing thrown after giving up with second segment and is transported to refuse bin in the lump, then transports barren rock stockyard to；First paragraph
The concentrate that pre-selection throws after giving up is transported to product storage bin in small, broken bits；
5) it is in small, broken bits：Ore in product storage bin in small, broken bits through belt feeder feed gyratory crusher in small, broken bits carry out it is in small, broken bits, its
Products C returns to preceding first paragraph screening in small, broken bits, forms closed circuit crushing circulation in small, broken bits；
6) ultrafine grinding：Product is transported to ultrafine grinding product storage bin in the lump with second segment oversize in first paragraph sieve, then percutaneously
Band batcher, which is fed, carries out ultrafine grinding in vertical shaft impact crusher, its product D is transported to second segment screening product storage bin；
7) second segment is sieved：Ore in second segment screening product storage bin feeds circular vibrating screen by oscillating feeder and carries out second
Section screening；On two products of the screening operation output, respectively second segment oversize and second segment undersize, second segment sieve
Product returns to ultrafine grinding product storage bin, forms ultrafine grinding closed circuit crushing circulation；
8) second segment pre-selection throws useless：First paragraph undersize and second segment undersize, which are fed, carries out in fine ore dry separator
Two sections of pre-selection throwings are given up, and mine tailing of the mine tailing after second segment pre-selection throwing is useless after transhipment with first paragraph pre-selection throwing after useless is transported to useless in the lump
Shi Cang；It is final products feeding mill choosing that the concentrate after giving up is thrown in second segment pre-selection.
Further, the first paragraph is sieved and second segment screening plant is heavy circular shale shaker.
Further, the upper and lower layer mesh size of heavy circular shale shaker of first paragraph screening be respectively 35 × 35mm,
7.5×7.5mm。
Further, the heavy circular shale shaker of second segment screening uses for double deck screen as single-deck screen, thereon, lower screen
Screen distance is respectively 15 × 15mm, 7.5 × 7.5mm.
Further, equipment used in the ultrafine grinding is vertical shaft impact crusher.
The present invention have passed through four broken, closed circuit screenings twice to low-ore grade magnetic iron ore and useless operation is thrown in pre-selection twice,
Reach that smaller ore grain size enters the purpose of ore grinding, most of barren rock can have been discarded, the final products granularity of ore is 0~6mm,
Reduce into ore grinding amount, improve iron ore and enter to grind grade, it is possible to decrease energy consumption and steel ball consumption, and then reduce being produced into for ore dressing
This, is conducive to the exploitation of low-grade magnetite ore, expands resource utilization.
Brief description of the drawings
Fig. 1 is the process chart that useless ore-dressing technique is thrown in low-grade magnetite pre-selection of the present invention.
Embodiment
Below in conjunction with drawings and examples, the invention will be further described.Referring to Fig. 1, a kind of low-grade magnetic of the invention
Useless ore-dressing technique is thrown in iron ore pre-selection, is realized by following steps：
1) coarse crushing 5:Low-grade raw iron ores 1 from stope are transported to the crude ore bin for selecting factory's coarse crushing workshop, Ran Houjing
2 points of grizzly feeder is that lump ore 3 feeds jaw crusher progress coarse crushing 5, its product A6 on the upper lump ore 3 of sieve and minus sieve ore deposit 4, sieve
Broken product storage bin in being transported in the lump with the minus sieve ore deposit 4 of grizzly feeder 2；
2) broken 7 in：In ore in broken product storage bin fed through belt feeder in broken gyratory crusher carry out in broken 7,
Its product B8 and in small, broken bits 16 products C 17 is transported to the screening product storage bin of the first paragraph before in small, broken bits 16 in the lump；
3) first paragraph screening 9：Ore in first paragraph screening product storage bin feeds circular vibrating screen through oscillating feeder and carries out the
One section of screening 9；Three products of the screening operation output, respectively first paragraph oversize 10 (go first paragraph pre-selection throw useless), the
Product 11 (removing ultrafine grinding) and first paragraph undersize 12 (going second segment pre-selection to throw useless) in one section of sieve；
4) first paragraph pre-selection throws useless 13：First paragraph oversize 10 (+30mm) feeds magnetic pulley and carries out first paragraph pre-selection throwing
Useless 13, the mine tailing 14 after first paragraph pre-selection throwing is useless preselects the mine tailing 24 thrown after giving up with second segment and is transported to refuse bin, Ran Houyun in the lump
Toward barren rock stockyard；The concentrate 15 that first paragraph pre-selection is thrown after giving up is transported to product storage bin in small, broken bits；
5) in small, broken bits 16：Ore in product storage bin in small, broken bits through belt feeder feed gyratory crusher in small, broken bits carry out it is in small, broken bits
16, its products C 17 returns to preceding first paragraph screening 9 in small, broken bits, forms closed circuit crushing circulation in small, broken bits；
6) ultrafine grinding 18：Product 11 (- 30+6mm) is transported to ultrafine grinding in the lump with second segment oversize 21 in first paragraph sieve
Product storage bin, then progress ultrafine grinding 18 in vertical shaft impact crusher is fed through belt feeder, its product D19 is transported to second segment
Sieve product storage bin；
7) second segment screening 20：Ore in second segment screening product storage bin feeds circular vibrating screen by oscillating feeder and carries out the
Two sections of screenings 20；Two products of the screening operation output, respectively second segment oversize 21 (removing ultrafine grinding) and second segment are sieved
Lower product 22 (going second segment pre-selection to throw useless), second segment oversize 21 (+6mm) returns to ultrafine grinding product storage bin, is formed ultra-fine
Broken closed circuit crushing circulation；
8) second segment pre-selection throws useless 23：First paragraph undersize 12 (- 6mm) and second segment undersize 22 (- 6mm) are fed
The pre-selection of progress second segment throws useless 23 in fine ore dry separator, and the mine tailing 24 after second segment pre-selection throwing is useless is preselected after transhipment with first paragraph
Throw the mine tailing 14 after giving up and be transported to refuse bin in the lump；It is final products feeding mill choosing that the concentrate 25 after giving up is thrown in second segment pre-selection.
Embodiment：As shown in figure 1, it is such reality to throw useless ore-dressing technique according to a kind of low-grade magnetite pre-selection of the present invention
It is existing, stope be transported to select the raw iron ores 1 of factory's crude ore bin through grizzly feeder 2 points be the upper lump ore 3 of sieve and minus sieve ore deposit 4；
Lump ore 3 obtains product A6 through coarse crushing 5 on sieve；Broken 7 obtain product B8 during minus sieve ore deposit 4 and product A6 are passed through in the lump；Product B8 and production in small, broken bits
Product C17 feeds first paragraph screening 9 and screens out product 11 and the lower production of first paragraph sieve in first paragraph oversize 10, first paragraph sieve in the lump
Product 12；First paragraph oversize 10, which feeds magnetic pulley, to carry out first paragraph pre-selection and throws useless 13, after sorting first paragraph pre-selection throw it is useless after
Mine tailing 14 and first paragraph pre-selection throw it is useless after concentrate 15；The concentrate 15 that first paragraph pre-selection is thrown after giving up feeds in small, broken bits 16 and obtains product
C17, products C 17 returns to first paragraph screening 9, forms closed cycle in small, broken bits；Product 11 and second segment oversize in first paragraph sieve
21 feed in the lump ultrafine grinding 18 product D19, product D19 feeds second segment screening 20 and screens out second segment oversize 21 and the
Two sections of undersizes 22, second segment oversize 21 returns to ultrafine grinding 18, forms ultrafine grinding closed cycle；First paragraph undersize
12 and second segment undersize 22 feed fine ore dry separator in the lump and carry out second segment pre-selection and throw useless 23, after sorting second segment pre-selection
Mine tailing 24 and second segment after throwing is useless preselect the concentrate 25 thrown after giving up, and second segment preselects the concentrate 25 thrown after giving up and send follow-up grind to select；
First paragraph preselects the mine tailing 14 after throwing is given up and second segment preselects the mine tailing 24 thrown after giving up and merges into true tailings 26, send refuse bin.
First paragraph is sieved and second segment screening plant is above and below heavy circular shale shaker, the heavy circular shale shaker of first paragraph screening
Layer mesh size is respectively 35 × 35mm, 7.5 × 7.5mm；The heavy circular shale shaker of second segment screening makees single-deck screen for double deck screen
Use, lower screen aperture is respectively 15 × 15mm, 7.5 × 7.5mm thereon.
The equipment that ultrafine grinding is used is vertical shaft impact crusher, and the equipment is for the new of metal mine ultrafine grinding operation
Type equipment.
Certain low-grade iron ore mountain carries out broken throw using above-mentioned several steps and given up, and after two stages of magnetic separation throws useless sort, throws
The barren rock yield discarded enters to grind iron ore grade and improves about 10% up to 31%.
What the iron ore mine was produced is low-ore grade magnetic iron ore.Ore Mineral Component is mainly magnetic iron ore, the red iron of illusion
Ore deposit, fine flakey bloodstone, limonite, objectionable impurities mineralogical composition are pyrite etc.；Gangue mineral is mainly acinous stone
English, calcedony, albite, chlorite, calcite, ankerite, apatite etc..The low-ore grade magnetic iron ore iron content is 29.85%,
The mine concentrator day processing raw ore scale is 11510t.The broken technical process of giving up of throwing of the iron ore is summarized as follows：
Raw ore (0~950mm) from stope is transported to the crude ore bin for selecting factory's coarse crushing workshop through automobile, is then fed through rod
Upper lump ore is sieved after machine screening feed jaw crusher and carry out coarse crushing, the minus sieve ore deposit of its product and grizzly feeder is in the lump through adhesive tape
Conveyer broken product storage bin in being transported to, then broken gyratory crusher is broken in carrying out in being fed through belt feeder；In broken product with
Product in small, broken bits is transported to preceding first paragraph in small, broken bits through rubber conveyer in the lump and sieves product storage bin, then feeds first through oscillating feeder
The circular vibrating screen of section screening, three products of the screening operation output, first paragraph oversize (+30mm) feeds magnetic through rubber conveyer
Pulley progress first paragraph pre-selection throws useless, has discarded 10% barren rock, and the mine tailing after first paragraph pre-selection throwing is useless is unloaded to adhesive tape conveying
Machine, preselects the mine tailing thrown after giving up with second segment and is transported to refuse bin in the lump, be then discharged into automobile through electric hydraulic palate-type gate, transport useless to
Clitter；The concentrate that first paragraph pre-selection is thrown after giving up is transported to product storage bin in small, broken bits through rubber conveyer, then is fed through belt feeder
Gyratory crusher progress in small, broken bits is in small, broken bits, and its product unloads to rubber conveyer and returns to preceding first paragraph screening in small, broken bits, forms in small, broken bits closes
Road is crushed；First paragraph sieve in product (- 30+6mm) be discharged into rubber conveyer be transported in the lump with second segment oversize (+6mm) it is super
Product storage bin in small, broken bits, then vertical shaft impact crusher progress ultrafine grinding is fed through belt feeder, its product is through rubber conveyer
Second segment screening product storage bin is transported to, the circular vibrating screen for then feeding second segment screening by oscillating feeder is sieved；Second segment
Two products are sifted out, second segment oversize (+6mm) is discharged into rubber conveyer and returns to ultrafine grinding product storage bin, form super
Closed circuit crushing in small, broken bits；First paragraph undersize (- 6mm) and second segment undersize (- 6mm) directly feed dry-type magnetic separator for ore fine
Progress second segment pre-selection throws useless, has discarded 21% barren rock, and the mine tailing after second segment pre-selection throwing is useless is thrown with first paragraph pre-selection to give up
Mine tailing afterwards is transported to refuse bin through rubber conveyer in the lump；Concentrate (full Iron grade is about 39%) fortune after giving up is thrown in second segment pre-selection
To fine ore bin, then carry out subsequently grinding choosing processing.
Iron ore through four sections broken two sections it is closed circuit be sized to final products granularity -6mm after using wet magnetic separation pre-selection throw useless,
Also it can be designed, produce by this technical process.
Low-grade magnetite pre-selection of the present invention throws useless ore-dressing technique and four broken industry, two is have passed through to low-ore grade magnetic iron ore
Secondary closed circuit screening operation, twice pre-selection throw useless, and its advantage is：(1) " much broken and lessmill " theory is fully implemented, using four sections broken two
Section is closed circuit to sieve ore final size d95- 6mm is controlled, reaches that smaller ore grain size enters the purpose of ore grinding.(2) fully implement
" can throw early throwing " theory, raw ore crushes two sections of closed circuit screenings through four sections can produce different grades：One is the rear utilization in small, broken bits in
Magnetic pulley is that the progress first paragraph pre-selection of 30~75mm lump ores throws useless to granularity, and bulk barren rock is discarded early；Two be ore
Final products granularity reaches can be such that valuable mineral is preferably dissociated with gangue during -6mm, and second segment is carried out with dry-type magnetic separator for ore fine
Pre-selection throws useless, can carry out sufficiently effective sorting to ore, can discard most of barren rock.Useless give full play to is thrown in two sections of pre-selections
The performance of two kinds of magnetic plants, can discard most of barren rock, reduce into ore grinding amount, improve iron ore and enter to grind grade.It is low
Grade magnetite ore is on the one hand that identical scale ore dressing plant can reduce subsequent ball milling machine and sort after " how broken, early to throw "
Lectotype selection, and then save equipment and construction investment；On the other hand it is energy-saving, it is possible to decrease energy consumption and steel ball consumption, enters
And reduce the production cost of ore dressing.(3) use present invention process, utilize " how broken, early to throw " advantage can substantially reduce investment and
Production cost, is conducive to the exploitation of low-grade magnetite ore, expands resource utilization.
Claims (3)
1. useless ore-dressing technique is thrown in a kind of low-grade magnetite pre-selection, it is characterised in that：Its processing step is as follows：
1) coarse crushing:Low-grade raw iron ores from stope are transported to the crude ore bin for selecting factory's coarse crushing workshop, are then given through rod
Material machine is divided into lump ore on the upper lump ore of sieve and minus sieve ore deposit, sieve and feeds jaw crusher progress coarse crushing, its product A and grizzly feeder
Minus sieve ore deposit be transported in the lump in broken product storage bin；
2) it is broken in：In ore in broken product storage bin fed through belt feeder in broken gyratory crusher carry out in broken, its product B
Preceding first paragraph in small, broken bits is transported in the lump with products C in small, broken bits sieves product storage bin；
3) first paragraph is sieved：Ore in first paragraph screening product storage bin feeds circular vibrating screen through oscillating feeder and carries out first paragraph sieve
Point, product and first paragraph undersize in output first paragraph oversize, first paragraph sieve；
4) first paragraph pre-selection throws useless：First paragraph oversize feeds magnetic pulley progress first paragraph pre-selection and throws useless, first paragraph pre-selection throwing
Mine tailing after useless preselects the mine tailing thrown after giving up with second segment and is transported to refuse bin in the lump, then transports barren rock stockyard to；First paragraph is preselected
Throw the concentrate after giving up and be transported to product storage bin in small, broken bits；
5) it is in small, broken bits：Ore in product storage bin in small, broken bits feeds gyratory crusher in small, broken bits through belt feeder and carries out in small, broken bits, its products C
Preceding first paragraph screening in small, broken bits is returned, closed circuit crushing circulation in small, broken bits is formed；
6) ultrafine grinding：Product is transported to ultrafine grinding product storage bin in the lump with second segment oversize in first paragraph sieve, then percutaneously brings
Material machine, which is fed, carries out ultrafine grinding in vertical shaft impact crusher, its product D is transported to second segment screening product storage bin；
7) second segment is sieved：Ore in second segment screening product storage bin feeds circular vibrating screen by oscillating feeder and carries out second segment sieve
Point；Two products of the screening operation output, respectively second segment oversize and second segment undersize, second segment oversize
Ultrafine grinding product storage bin is returned, ultrafine grinding closed circuit crushing circulation is formed；
8) second segment pre-selection throws useless：First paragraph undersize and second segment undersize, which are fed, carries out second segment in fine ore dry separator
Pre-selection throwing is given up, and mine tailing of the mine tailing after second segment pre-selection throwing is useless after transhipment with first paragraph pre-selection throwing after useless is transported to barren rock in the lump
Storehouse；It is final products feeding mill choosing that the concentrate after giving up is thrown in second segment pre-selection.
2. useless ore-dressing technique is thrown in low-grade magnetite pre-selection according to claim 1, it is characterised in that：The first paragraph sieve
Divide and second segment screening plant is heavy circular shale shaker.
3. useless ore-dressing technique is thrown in low-grade magnetite pre-selection according to claim 2, it is characterised in that：The first paragraph sieve
The upper and lower layer mesh size of heavy circular shale shaker divided is respectively 35 × 35mm, 7.5 × 7.5mm.
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| CN115501964A (en) * | 2022-09-23 | 2022-12-23 | 中钢设备有限公司 | Dry-wet separation method for superfine crushing and coarse-fine grading of low-grade magnetite |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4070273A (en) * | 1975-08-11 | 1978-01-24 | Occidental Petroleum Corporation | Glass recovery |
| DK1989156T3 (en) * | 2006-02-28 | 2012-11-26 | Smidth As F L | PROCEDURE FOR DRYING AND FINDING OF MOISTURE, MINERAL RAW MATERIALS. |
| CN101502819B (en) * | 2009-03-25 | 2010-11-24 | 中钢集团马鞍山矿山研究院有限公司 | Pre-selection method of low-ore grade magnetic iron ore |
| CN101559403B (en) * | 2009-05-31 | 2013-03-20 | 安徽大昌矿业集团有限公司 | Method for concentrating extremely low-grade refractory magnetite |
| CN102085491B (en) * | 2009-12-08 | 2012-05-23 | 鞍钢集团矿业公司 | New process with four sections of crushing and two times of closed-loop screening for crushing ores through high-pressure roller mill |
| CN103212476A (en) * | 2013-05-09 | 2013-07-24 | 徐州众工精密模锻有限公司 | Integrated iron ore production device |
| CN103962214B (en) * | 2014-06-03 | 2015-08-19 | 中冶沈勘秦皇岛工程技术有限公司 | A kind of beneficiation combined method method and system of synthetical recovery association iron Phosphate minerals |
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| CN108940528A (en) * | 2018-06-23 | 2018-12-07 | 枣庄鑫金山智能机械股份有限公司 | A kind of efficient ore reduction technique and its crushing system |
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