CN103555935A - Pellet iron ore concentrate fine grinding pelletizing system and process - Google Patents
Pellet iron ore concentrate fine grinding pelletizing system and process Download PDFInfo
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- CN103555935A CN103555935A CN201310588611.8A CN201310588611A CN103555935A CN 103555935 A CN103555935 A CN 103555935A CN 201310588611 A CN201310588611 A CN 201310588611A CN 103555935 A CN103555935 A CN 103555935A
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Abstract
The invention relates to a pellet iron ore concentrate fine grinding pelletizing system and a pellet iron ore concentrate fine grinding pelletizing process. The pellet iron ore concentrate fine grinding pelletizing system comprises a feeding belt conveyer, a raw material ore bin, a vibrating funnel, a feed chute, a ball mill, a finished product ore groove, a quantitative feeder, a collection belt conveyer and a mixer, wherein the finished product ore groove, the quantitative feeder, the collection belt conveyer and the mixer are connected with the ball mill in sequence; the system is characterized in that the side face of the ball mill is connected with a hot air furnace through a hot air pipeline; a powder selector and a storage bin are arranged between the ball mill and the finished product ore groove; the powder selector is connected with a discharge port end, the raw material ore bin and the storage bin through conveying pipelines respectively; the upper part of the storage bin is provided with a high-efficiency dust remover; the high-efficiency dust remover is connected with an induced draught fan and a chimney; the storage bin is communicated with the finished product ore groove through an air chute; the upper part of the finished product ore groove is provided with a bin top dust remover. The pellet iron ore concentrate fine grinding pelletizing system has the advantages of simple process flow, low overhaul rate, capability of saving water resource and high pelletizing rate when being used for pelletizing.
Description
Technical field
The invention belongs to pelletizing pelletizing technical field, particularly pelletizing iron ore concentrate fine grinding pelletizing system and technique.
Background technology
Pelletizing needs certain fineness ，Er pelletizing plant outsourcing iron ore concentrate often not meet fineness requirement by powdered iron ore, therefore, need to carry out fine grinding technology to iron ore concentrate.At present, iron ore concentrate ore grinding all adopts wet milling technique, wet milling technique comprises following flow process: mineral processing in China industry substantially all adopts two sections of closed circuit grinding technical process, it is closed circuit that one section of ball mill and screw classifier have formed primary grinding, and secondary grinding loop is comprised of two sections of ball mills, pump pond and hydrocyclone.Iron ore concentrate ore pulp is fed to slurry concentrating pond, by underflow pump, iron ore concentrate ore pulp is fed to filter and dewater, filtrate is imported to filtrate pump pond, enter dressing-works water treatment system and recycle.There is following problem in this griding technology: 1) required equipment is many; 2) process procedure is many; 3) electricity consumption point is many, and power consumption is high; 4) trouble spot is many; 5) technique water loss is large, and water treatment expense is large; 6) technique area of mill site is large; 7) construction investment is high, and maintenance cost is large; 8) technology controlling and process operational difficulty.
The problem existing in order to solve current griding technology, has invented iron ore concentrate fine grinding technology and equipment.This constructional feature is: adopt dry method griding technology, use hotblast stove to produce hot blast and be passed into grinding machine, limit dried material limit fine grinding breeze, by iron ore concentrate granularity after the separated dry method ore grinding of powder separating machine, release mesh enters subsequent processing, and substandard product returns to grinding machine ore grinding again.Advantage of the present invention has: 1) required equipment is few; 2) process procedure is few; 3) electricity consumption point is few, and power consumption is low; 4) trouble spot is few; 5) technique area of mill site is little; 6) technological process consumes water resources hardly; 7) construction investment is low, and maintenance cost is little; 8) technological operation is simple.
Summary of the invention
The object of this invention is to provide a kind of less investment, maintenance rate is low, power consumption is low, saving water resource, technological operation are simple, pelletizing iron ore concentrate fine grinding manufacturing system and technique that balling ratio is high.
The object of the invention is to realize by following technical proposals:
Pelletizing iron ore concentrate fine grinding pelletizing system of the present invention, comprise and establish material loading conveyor drive, the raw material ore storage bin of the storage iron breeze being connected with material loading conveyor drive exhaust end, be located at the Vibrating funnel of powdered iron ore raw material ore storage bin end opening, be located at the feed chute of Vibrating funnel end opening, the ball mill being connected with feed chute and the finished product ore deposit groove being connected with ball mill successively, constant feeder, conveyor drive and mixing machine gather materials, bottom at described finished product ore deposit groove is provided with push-pull valve and gate, it is characterized in that by hot air duct, being connected with hotblast stove in the side of described ball mill, between described ball mill and finished product ore deposit groove, establish powder selector and storage bin, described powder selector is held with ball mill discharging mouth respectively by transport pipe, raw material ore storage bin is connected with storage bin, top at described storage bin is provided with high-efficiency dust remover, described high-efficiency dust remover is connected with chimney with induced draft fan, described storage bin is communicated with by air flume with finished product ore deposit groove, top at described finished product ore deposit groove is provided with roof scrubber.
Double-deck cinder discharge valve top at described storage bin discharge port is provided with Fluidizer.
Double-deck cinder discharge valve top at described finished product ore deposit groove bin discharge port external is provided with Fluidizer.
A kind of pelletizing iron ore concentrate fine grinding pellet forming process of the present invention, is characterized in that comprising the following steps:
1) by granularity, be to be greater than-200 object iron ore concentrates to send into feed chute the ball mill being connected with hotblast stove through raw material ore storage bin, oven dry limit, iron ore concentrate limit mill is dried to water ratio lower than 3%, be milled to the fine iron breeze that is less than-200 orders 80% simultaneously and send into powder selector through pipeline;
2) separated through powder selector, object qualified breeze in granularity <-200 feeds storage bin, and through the push-pull valve of storage bin and Double-deck cinder discharge valve by air flume to the groove discharging of finished product ore deposit, then through sealed quantitative feeding machine, fine iron breeze is delivered to the conveyor drive that gathers materials; Granularity >-200 object coarse fraction returns to raw material ore storage bin and regrinds;
3) object qualified breeze in granularity <-200 is together transported to mixing machine through gather materials conveyor drive and wilkinite and Wingdale and adds water mixed pelletizing.
Advantage of the present invention is: because the present invention is provided with hotblast stove in the side of ball mill, when to raw material concentrate ore grinding, can limit heating edge ore grinding, grinding machine raw material concentrate can not only be milled to-200 orders 80%, and the water ratio of concentrate reaches below 3%, slurry concentrating, dehydration procedure in wet-milling process have been saved.Required equipment is few, and process procedure is few, and electricity consumption point is few, and power consumption is low, and trouble spot is few, and technique area of mill site is little, and technological process consumes water resources hardly; Construction investment is low, and maintenance cost is little; Technological operation is simple.
Accompanying drawing explanation
Fig. 1 is pelletizing iron ore concentrate fine grinding pelletizing system schematic of the present invention.
Embodiment
Below in conjunction with accompanying drawing explanation the specific embodiment of the present invention.
As shown in Figure 1, pelletizing iron ore concentrate fine grinding pelletizing system of the present invention, comprise material loading conveyor drive 1, the raw material ore storage bin 2 of the storage iron breeze being connected with material loading conveyor drive 1 exhaust end, be located at the Vibrating funnel 3 of powdered iron ore raw material ore storage bin 2 end openings, be located at the feed chute 4 of Vibrating funnel 3 end openings, the ball mill 8 being connected with feed chute 4 and the finished product ore deposit groove 17 being connected with ball mill, constant feeder 20, conveyor drive 21 and mixing machine 22 gather materials, bottom at described finished product ore deposit groove 17 is provided with push-pull valve and gate 19, it is characterized in that by hot air duct 6, being connected with hotblast stove 5 in the side of described ball mill 7, its hotblast stove 5 is blown into hot blast in ball mill 7, make to feed the concentrate limit heating edge mill in ball mill, reach the object of dry grinding.Between described ball mill 7 and finished product ore deposit groove 18, establish powder selector 8 and storage bin 9, described powder selector 8 is connected with ball mill 7 discharge port ends, raw material ore storage bin 2 and storage bin 9 respectively by transport pipe, on the top of described storage bin 9, be provided with high-efficiency dust remover 10, described high-efficiency dust remover 10 is connected with chimney 12 with induced draft fan 11, the dust in the time of the concentrate after fine grinding can being fed to storage bin 9 that arranges of high-efficiency dust remover is discharged from induced draft fan and diffusing chimney, reaches the effect of environmental protection; Described storage bin 9 is communicated with by air flume 15 with finished product ore deposit groove 17, on the top of described finished product ore deposit groove 17, is provided with roof scrubber 16.
In order to prevent that the not smooth problem of storage bin 9 and 17 blankings of groove storehouse, finished product ore deposit from occurring, the present invention is provided with Fluidizer 13 on Double-deck cinder discharge valve 14 tops of described storage bin 9 discharge ports, on Double-deck cinder discharge valve 19 tops of described groove storehouse, finished product ore deposit 17 discharge ports, is provided with Fluidizer 18.
A kind of pelletizing iron ore concentrate fine grinding pellet forming process of the present invention, is characterized in that comprising the following steps:
1) by granularity, be to be greater than-200 object iron ore concentrates to send into feed chute the ball mill being connected with hotblast stove through raw material ore storage bin, oven dry limit, iron ore concentrate limit mill is dried to water ratio lower than 4%, be milled to the fine iron breeze that is less than-200 orders 80% simultaneously and send into powder selector through pipeline;
2) separated through powder selector, object qualified breeze in granularity <-200 feeds storage bin, and through the push-pull valve of storage bin and Double-deck cinder discharge valve by air flume to the groove discharging of finished product ore deposit, then through sealed quantitative feeding machine, fine iron breeze is delivered to the conveyor drive that gathers materials; Granularity >-200 object coarse fraction returns to raw material ore storage bin and regrinds;
3) object qualified breeze in granularity <-200 is together transported to mixing machine through gather materials conveyor drive and wilkinite and Wingdale and adds water mixed pelletizing.
Adopt above-mentioned pelletizing iron ore concentrate fine grinding pellet forming process can shorten grinding flowsheet, process procedure is few, and electricity consumption point is few, and power consumption is low, and trouble spot is few, and technique area of mill site is little, and technological process consumes water resources hardly; Effectively improved the balling ratio of agglomerates of sintered pellets.
Claims (4)
1. a pelletizing iron ore concentrate fine grinding pelletizing pelletizing system, comprise material loading conveyor drive, the raw material ore storage bin of the storage iron breeze being connected with material loading conveyor drive exhaust end, be located at the Vibrating funnel of powdered iron ore raw material ore storage bin end opening, be located at the feed chute of Vibrating funnel end opening, the ball mill being connected with feed chute and the finished product ore deposit groove being connected with ball mill successively, constant feeder, conveyor drive and mixing machine gather materials, bottom at described finished product ore deposit groove is provided with push-pull valve and gate, it is characterized in that by hot air duct, being connected with hotblast stove in the side of described ball mill, between described ball mill and finished product ore deposit groove, establish powder selector and storage bin, described powder selector by transport pipe, hold respectively by will and ball mill discharging mouth, raw material ore storage bin is connected with storage bin, top at described storage bin is provided with high-efficiency dust remover, described high-efficiency dust remover is connected with chimney with induced draft fan, described storage bin is communicated with by air flume with finished product ore deposit groove, top at described finished product ore deposit groove is provided with roof scrubber.
2. pelletizing iron ore concentrate fine grinding pelletizing system according to claim 1, is characterized in that being provided with Fluidizer on the Double-deck cinder discharge valve top of described storage bin discharge port.
3. pelletizing iron ore concentrate fine grinding pelletizing system according to claim 1, is characterized in that being provided with Fluidizer on the Double-deck cinder discharge valve top of described finished product ore deposit groove bin discharge port external.
4. a pelletizing iron ore concentrate fine grinding pellet forming process, is characterized in that comprising the following steps:
1) granularity is sent into the ball mill being connected with hotblast stove for-200 object iron ore concentrates through raw material ore storage bin and feed chute, oven dry limit, iron ore concentrate limit mill is dried to water ratio lower than 4%, the fine iron breeze that is simultaneously milled to-200 orders 80% is sent into powder selector through pipeline;
2) separated through powder selector, object qualified breeze in granularity <-200 feeds storage bin, and through the push-pull valve of storage bin and Double-deck cinder discharge valve by air flume to the groove discharging of finished product ore deposit, then through sealed quantitative feeding machine, fine iron breeze is delivered to the conveyor drive that gathers materials; Granularity >-200 object coarse fraction returns to raw material ore storage bin and regrinds;
3) object qualified breeze in granularity <-200 is together transported to mixing machine through gather materials conveyor drive and wilkinite and Wingdale and adds water mixed pelletizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588611.8A CN103555935A (en) | 2013-11-21 | 2013-11-21 | Pellet iron ore concentrate fine grinding pelletizing system and process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310588611.8A CN103555935A (en) | 2013-11-21 | 2013-11-21 | Pellet iron ore concentrate fine grinding pelletizing system and process |
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| CN103555935A true CN103555935A (en) | 2014-02-05 |
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| CN201310588611.8A Pending CN103555935A (en) | 2013-11-21 | 2013-11-21 | Pellet iron ore concentrate fine grinding pelletizing system and process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106000560A (en) * | 2016-07-01 | 2016-10-12 | 大唐环境产业集团股份有限公司 | Slurrying system for limestone slurry |
| CN106040422A (en) * | 2016-06-14 | 2016-10-26 | 赵宁光 | Distributing warehouse for beneficiation |
| CN108295942A (en) * | 2018-04-27 | 2018-07-20 | 宁海利航机电设备设计有限公司 | A kind of metallurgy of iron |
| CN108559837A (en) * | 2018-04-27 | 2018-09-21 | 宁海利航机电设备设计有限公司 | A kind of metallurgy of scale |
| CN111974514A (en) * | 2020-08-17 | 2020-11-24 | 上海益非亚粉体技术设备有限公司 | Intelligent powder grinding and grading process for powdery material |
| CN112121926A (en) * | 2020-09-07 | 2020-12-25 | 张淑英 | Raw material crushing ball mill for chemical production |
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| CN101130177A (en) * | 2007-10-15 | 2008-02-27 | 王林 | Mineral dressing technique for low ore grade iron ore and mineral dressing equipment thereof |
| CN101386908A (en) * | 2007-09-11 | 2009-03-18 | 中国科学院过程工程研究所 | The process system and roasting process of magnetizing and roasting refractory iron ore powder |
| CN203546120U (en) * | 2013-11-21 | 2014-04-16 | 中冶北方（大连）工程技术有限公司 | Conglomeration iron concentrate fine-grinding and pelletizing system |
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| CN1621541A (en) * | 2004-12-14 | 2005-06-01 | 白俊卿 | Process for preparing pellet from high-grade ironstone by using direct dry method |
| CN2846418Y (en) * | 2005-10-09 | 2006-12-13 | 西北化工研究院 | Dry powder solid fuel gasifying device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040422A (en) * | 2016-06-14 | 2016-10-26 | 赵宁光 | Distributing warehouse for beneficiation |
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| CN106000560A (en) * | 2016-07-01 | 2016-10-12 | 大唐环境产业集团股份有限公司 | Slurrying system for limestone slurry |
| CN108295942A (en) * | 2018-04-27 | 2018-07-20 | 宁海利航机电设备设计有限公司 | A kind of metallurgy of iron |
| CN108559837A (en) * | 2018-04-27 | 2018-09-21 | 宁海利航机电设备设计有限公司 | A kind of metallurgy of scale |
| CN108559837B (en) * | 2018-04-27 | 2019-08-09 | 玉环市万进新能源科技有限公司 | A kind of metallurgical equipment of scale |
| CN111974514A (en) * | 2020-08-17 | 2020-11-24 | 上海益非亚粉体技术设备有限公司 | Intelligent powder grinding and grading process for powdery material |
| CN112121926A (en) * | 2020-09-07 | 2020-12-25 | 张淑英 | Raw material crushing ball mill for chemical production |
| CN112121926B (en) * | 2020-09-07 | 2021-12-07 | 聊城锐利机械设备有限公司 | Raw material crushing ball mill for chemical production |
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Application publication date: 20140205 |