CN103721839A - High pressure roller mill product wet type pre-selection system - Google Patents
High pressure roller mill product wet type pre-selection system Download PDFInfo
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- CN103721839A CN103721839A CN201310568787.7A CN201310568787A CN103721839A CN 103721839 A CN103721839 A CN 103721839A CN 201310568787 A CN201310568787 A CN 201310568787A CN 103721839 A CN103721839 A CN 103721839A
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Abstract
The invention belongs to the technical field of dressing plate pre-selection tailing discarding, and particularly relates to a high pressure roller mill product wet type pre-selection system. The high pressure roller mill product wet type pre-selection system comprises a high pressure roller mill smashing system and is characterized in that the high pressure roller mill product wet type pre-selection system further comprises a high pressure roller mill product screening system, a screened product conveying system and a fine fraction screened product grading system, the high pressure roller mill product screening system, the screened product conveying system and the fine fraction screened product grading system are sequentially connected with the high pressure roller mill smashing system, the high pressure roller mill product screening system comprises a vibrating screen feeding bin, an under-bin ore discharge chute, a vibrating screen ore feeding belt conveyor and a wet type screening vibrating screen, the screened product conveying system comprises an on-screen product return belt conveyor, an under-screen pump pool, a conveying pump and a conveying pipeline, and the fine fraction screened product grading system comprises a multi-pipe pulp distributor, a set of two-pipe pulp distributors and a set of large-granularity wet magnetic separators. The high pressure roller mill product wet type pre-selection system is reasonable in process, saves energy, lowers energy consumption, is safe and reliable to use, high in work efficiency and capable of conducting pre-selection and tailing discarding on high pressure roller mill fine fraction screened products, and remarkably improves the high pressure roller mill fine fraction product screening.
Description
Technical field
The invention belongs to ore dressing plant tailings discarding by preconcentration technical field, especially relate to a kind of high pressure roller mill product wet type pre-selecting system.
Background technology
Because high pressure roller mill utilizes the extruding force of pair roller next broken, its crushed product is thinner with respect to the crushed product size of gyratory crusher, and particularly the content of fine fraction product has significant increase; In addition, for ore dressing plant, energy consumption mainly comes from ore grinding, and feed preparation unit size is thinner, and power consume is lower, and therefore, a lot of iron ore beneficiating factories utilize high pressure roller mill to replace cone crushing ore in small, broken bits, the thinner ore particle of granularity after fragmentation is carried out to ore grinding.For ore dressing plant, by adopting the technique of tailings discarding by preconcentration to get rid of a part of mine tailing before ore grinding, reduce into ore grinding amount, do like this number of units that can reduce grinding machine, reduce equipment investment and energy consumption.And through the iron ore maximum particle size of high pressure roller mill closed circuit crushing product generally at 3mm-6mm, therefore it is thrown in advance tail and has following technological difficulties: 1) tailings discarding by preconcentration is all generally that dry method magnetic pulley is thrown tail, granularity is thinner, particulate ore deposit is more similar to the movement locus of fine-grained gangue, the iron ore that is 3mm-6mm for maximum particle size is thrown tail by dry method causes the loss late of iron larger, uneconomical; 2) screening of the high pressure roller mill breaking ores product that is 3mm-6mm to granularity, screening efficiency is low, and circulating load is large, and the vibratory sieve needing is many; 3) iron ore that maximum particle size is 3mm-6mm under the sieve of high pressure roller mill crushed product is because its product granularity is large, and iron ore hardness is large again, large to conveyance conduit and delivery pump wearing and tearing, thereby operating efficiency is reduced.
Summary of the invention
The object of this invention is to provide a kind of technique reasonable, energy-saving and cost-reducing, safe and reliable, the high pressure roller mill product wet type pre-selecting system that operating efficiency is high, can realize high pressure roller mill fine fraction screening product tailings discarding by preconcentration, and high pressure roller mill fine fraction product screening efficiency is significantly improved.
The object of the invention is to realize by following technical proposals:
High pressure roller mill product wet type pre-selecting system of the present invention, comprise high pressure roller mill crushing system, this high pressure roller mill crushing system is mainly comprised of ribbon conveyer, feed hopper, high-pressure roller mill, hopper and high pressure roller mill product ribbon conveyer under storage bin, high pressure roller mill storehouse, characterized by further comprising the high pressure roller mill product screening system being connected successively with described high pressure roller mill crushing system, screening product delivery system and fine fraction screening product sort system
Described high pressure roller mill product screening system comprises the vibratory sieve feed hopper being connected with described high pressure roller mill product ribbon conveyer, be located at ore discharge chute under the storehouse of this vibratory sieve feed hopper bottom, be located at the vibratory sieve of ore discharge chute bottom under this storehouse to ore deposit ribbon conveyer and wet screening vibratory sieve
Described screening product delivery system comprises that the oversize being connected with described wet screening vibratory sieve returns to ribbon conveyer, pump pond under the sieve being connected with described wet screening vibratory sieve, the delivery pump that the lower pump of sieve pond is connected therewith, the conveyance conduit that delivery pump is connected therewith, be located on this conveyance conduit and be positioned at the ore drawing electrically operated valve in described delivery pump exit, described oversize returns to ribbon conveyer and is connected with described storage bin
Described fine fraction screening product sorts system and comprises the multitube pulp distributer being connected with described conveyance conduit, one group of two pipe pulp distributer that multitube pulp distributer is connected therewith, respectively one group of two one group of coarsegrain wet magnetic separator that pipe pulp distributer is connected therewith.
Giving in the case of ore deposit of described coarsegrain wet magnetic separator is provided with a spiral point ore deposit device.
The maximum sieve fraction of described wet screening vibratory sieve is 3mm-6mm.
Described delivery pump is that transfer ore pulp maximum particle size is the abrasion resisting pump of 3mm-6mm.
Described conveyance conduit is rare earth alloy material, and its pipe lining is abrasive rubber pipe.
Advantage of the present invention:
(1) high pressure roller mill product wet type pre-selecting system of the present invention utilizes wet screening system to sieve high pressure roller mill fine fraction product, screening efficiency can reach more than 85%, greatly reduce the circulating load of high pressure roller mill, reduced the quantity of the vibratory sieve of high pressure roller mill, saved investment;
(2) high pressure roller mill product wet type pre-selecting system of the present invention utilizes coarsegrain wet magnetic separator to carry out coarsegrain wet type pre-selecting to the 3mm-6mm product through high pressure roller mill closed circuit crushing, can dish out with respect to the mine tailing of mine-supplying quantity 30% left and right, greatly reduce the mine-supplying quantity of ore grinding, reduced the number of units of grinding machine, reduce equipment investment, also greatly reduced the energy consumption of ore grinding;
(3) giving in the case of ore deposit of every coarsegrain wet magnetic separator of high pressure roller mill product wet type pre-selecting system of the present invention is provided with a spiral point ore deposit device, by this spiral point ore deposit device can be by the ore pulp feeding the length direction uniform distribution along drums for magnetic separation machine, thereby improve the unit disposal ability of coarsegrain wet magnetic separator, reduce the number of devices of coarsegrain wet magnetic separator, saved investment;
(4) high pressure roller mill product wet type pre-selecting system of the present invention adopts wear-resisting delivery pump and the wear-resisting rare earth alloy pipeline of line with rubber to carry iron ore slurry, and operating rate is high, and maintenance is little, has solved iron ore slurry large to the wearing and tearing of conveyance conduit, the problem of difficulty of transportation;
(5) outlet of the wear-resisting delivery pump of high pressure roller mill product wet type pre-selecting system of the present invention is provided with ore drawing electrically operated valve, in line clogging, can open valve discharges the silting ore deposit in pipeline, solve line clogging problem, improved system job rate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, further illustrate the specific embodiment of the present invention.
As shown in Figure 1, high pressure roller mill product wet type pre-selecting system of the present invention, comprise high pressure roller mill crushing system, this high pressure roller mill crushing system is mainly comprised of ribbon conveyer 2, feed hopper 3, high-pressure roller mill 4, hopper 5 and high pressure roller mill product ribbon conveyer 6 under storage bin 1, high pressure roller mill storehouse, characterized by further comprising the high pressure roller mill product screening system being connected successively with described high pressure roller mill crushing system, screening product delivery system and fine fraction screening product sort system
Described high pressure roller mill product screening system comprises the vibratory sieve feed hopper 7 being connected with described high pressure roller mill product ribbon conveyer 6, be located at ore discharge chute 8 under the storehouse of these vibratory sieve feed hopper 7 bottoms, be located at the vibratory sieve of ore discharge chute 8 bottoms under this storehouse to ore deposit ribbon conveyer 9 and wet screening vibratory sieve 10
Described screening product delivery system comprises that the oversize being connected with described wet screening vibratory sieve 10 returns to ribbon conveyer 11, pump pond 12 under the sieve being connected with described wet screening vibratory sieve 10, the delivery pump 13 that the lower pump of sieve pond 12 is connected therewith, the conveyance conduit 14 that delivery pump 13 is connected therewith, be located on this conveyance conduit 14 and be positioned at the ore drawing electrically operated valve 15 in described delivery pump 13 exits, described oversize returns to ribbon conveyer 11 and is connected with described storage bin 1
Described fine fraction screening product sorts system and comprises the multitube pulp distributer 16 being connected with described conveyance conduit 14, one group of two pipe pulp distributer 17 that multitube pulp distributer 16 is connected therewith, respectively one group of two one group of coarsegrain wet magnetic separator 19 that pipe pulp distributer 17 is connected therewith.
Giving in the case of ore deposit of described coarsegrain wet magnetic separator 19 is provided with a spiral point ore deposit device 18.
The maximum sieve fraction of described wet screening vibratory sieve 10 is 3mm-6mm.
The abrasion resisting pump that described delivery pump 13 is 3mm-6mm for transfer ore pulp maximum particle size.
Described conveyance conduit 14 is rare earth alloy material, and its pipe lining is abrasive rubber pipe.
The course of work of the present invention is:
The ore providing from the storage bin 1 of high pressure roller mill feeds the feed hopper 3 of high pressure roller mill via ribbon conveyer 2 high pressure roller mill storehouse, feed again high-pressure roller mill 4, ore after fragmentation feeds high pressure roller mill product ribbon conveyer 6 via the hopper 5 under high-pressure roller mill 4, and is transported to vibratory sieve feed hopper 7.Ore after fragmentation feeds vibratory sieve to ore deposit ribbon conveyer 9 via discharge chute 8 under storehouse again, by vibratory sieve, to ore deposit ribbon conveyer 9, feeds wet screening vibratory sieve 10.Through the wet screening of wet screening vibratory sieve, oversize returns to via oversize the storage bin 1 that ribbon conveyer 11 turns back to high pressure roller mill and forms closed cycle, undersize feeds the lower pump of sieve pond 12, via delivery pump 13 and conveyance conduit defeated 14, delivers to multitube pulp distributer 16.The maximum through-screen size of wet screening vibratory sieve 10 is 3mm-6mm herein, on sieve, moisture can be controlled at below 8%, oversize turns back in the storage bin 1 of high pressure roller mill and again carries out fragmentation, the lower fine fraction product of sieve is drained into the lower pump of sieve pond 12, by delivery pump 13, via pipeline, is given in multitube pulp distributer 16.Delivery pump 13 is that a high maximum particle size of carrying of operating rate is the abrasion resisting pump of 3mm-6mm, delivery side of pump pipe is provided with ore drawing electrically operated valve 15, in line clogging, can open valve the silting ore deposit in pipeline is discharged, solve line clogging problem, improve system job rate.Conveyance conduit 14 is rare earth alloy material, and its pipe lining is abrasive rubber pipe, more wear-resisting.Ore pulp feeds every two pipe pulp distributers 17 by 16 gravity flows of multitube pulp distributer, flow automatically again to every coarsegrain wet magnetic separator 19, via the spiral point ore deposit device 18 of coarsegrain wet magnetic separator 19 inside can be by the ore pulp feeding the drum length direction uniform distribution along coarsegrain wet magnetic separator 19.Ore pulp finally obtains two kinds of products through sorting of coarsegrain wet magnetic separator 19, i.e. mine tailing and concentrate, and mine tailing is for throwing tail product, and concentrate enters next section of grinding operation.Technique of the present invention is reasonable, and energy-saving and cost-reducing, safe and reliable, operating efficiency is high, can realize high pressure roller mill fine fraction screening product tailings discarding by preconcentration, and high pressure roller mill fine fraction product screening efficiency is significantly improved.
Claims (5)
1. a high pressure roller mill product wet type pre-selecting system, comprise high pressure roller mill crushing system, this high pressure roller mill crushing system is mainly comprised of ribbon conveyer, feed hopper, high-pressure roller mill, hopper and high pressure roller mill product ribbon conveyer under storage bin, high pressure roller mill storehouse, characterized by further comprising the high pressure roller mill product screening system being connected successively with described high pressure roller mill crushing system, screening product delivery system and fine fraction screening product sort system
Described high pressure roller mill product screening system comprises the vibratory sieve feed hopper being connected with described high pressure roller mill product ribbon conveyer, be located at ore discharge chute under the storehouse of this vibratory sieve feed hopper bottom, be located at the vibratory sieve of ore discharge chute bottom under this storehouse to ore deposit ribbon conveyer and wet screening vibratory sieve
Described screening product delivery system comprises that the oversize being connected with described wet screening vibratory sieve returns to ribbon conveyer, pump pond under the sieve being connected with described wet screening vibratory sieve, the delivery pump that the lower pump of sieve pond is connected therewith, the conveyance conduit that delivery pump is connected therewith, be located on this conveyance conduit and be positioned at the ore drawing electrically operated valve in described delivery pump exit, described oversize returns to ribbon conveyer and is connected with described storage bin
Described fine fraction screening product sorts system and comprises the multitube pulp distributer being connected with described conveyance conduit, one group of two pipe pulp distributer that multitube pulp distributer is connected therewith, respectively one group of two one group of coarsegrain wet magnetic separator that pipe pulp distributer is connected therewith.
2. high pressure roller mill product wet type pre-selecting system according to claim 1, what it is characterized in that described coarsegrain wet magnetic separator is provided with a spiral point ore deposit device in the case of ore deposit.
3. high pressure roller mill product wet type pre-selecting system according to claim 1, is characterized in that the maximum sieve fraction of described wet screening vibratory sieve is 3mm-6mm.
4. high pressure roller mill product wet type pre-selecting system according to claim 1, is characterized in that described delivery pump is that transfer ore pulp maximum particle size is the abrasion resisting pump of 3mm-6mm.
5. high pressure roller mill product wet type pre-selecting system according to claim 1, is characterized in that described conveyance conduit is rare earth alloy material, and its pipe lining is abrasive rubber pipe.
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| CN201310568787.7A CN103721839A (en) | 2013-11-15 | 2013-11-15 | High pressure roller mill product wet type pre-selection system |
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| CN201310568787.7A CN103721839A (en) | 2013-11-15 | 2013-11-15 | High pressure roller mill product wet type pre-selection system |
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Cited By (5)
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| CN110420688A (en) * | 2019-08-29 | 2019-11-08 | 舞钢经山新材料有限公司 | A kind of wet type pre-selecting and high pressure roller mill are used in conjunction to improve the ore-sorting system of beneficiating efficiency |
| CN111659528A (en) * | 2020-06-09 | 2020-09-15 | 包头市石宝铁矿集团有限责任公司 | Lean ore processing method based on high-pressure roller mill |
| CN113058726A (en) * | 2021-03-26 | 2021-07-02 | 中冶北方（大连）工程技术有限公司 | System for improving screening closed-circuit operation rate of high-pressure roller mill |
| CN113333150A (en) * | 2021-05-13 | 2021-09-03 | 西北矿冶研究院 | Iron ore tailing pulp intermittent grinding and consumption reducing process |
| CN113426567A (en) * | 2021-06-17 | 2021-09-24 | 太原钢铁(集团)有限公司 | Production method of superfine lean magnetite |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113058726A (en) * | 2021-03-26 | 2021-07-02 | 中冶北方（大连）工程技术有限公司 | System for improving screening closed-circuit operation rate of high-pressure roller mill |
| CN113333150A (en) * | 2021-05-13 | 2021-09-03 | 西北矿冶研究院 | Iron ore tailing pulp intermittent grinding and consumption reducing process |
| CN113426567A (en) * | 2021-06-17 | 2021-09-24 | 太原钢铁(集团)有限公司 | Production method of superfine lean magnetite |
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Application publication date: 20140416 |