CN102230070B - Novel three-stage pre-dressing and crushing process for low-grade magnetite - Google Patents

Novel three-stage pre-dressing and crushing process for low-grade magnetite Download PDF

Info

Publication number
CN102230070B
CN102230070B CN 201010187249 CN201010187249A CN102230070B CN 102230070 B CN102230070 B CN 102230070B CN 201010187249 CN201010187249 CN 201010187249 CN 201010187249 A CN201010187249 A CN 201010187249A CN 102230070 B CN102230070 B CN 102230070B
Authority
CN
China
Prior art keywords
ore
sections
dry
machine
crushing
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.)
Active
Application number
CN 201010187249
Other languages
Chinese (zh)
Other versions
CN102230070A (en
Inventor
于克旭
周征
戴兴宇
章鼎
张树军
张卓
许洪钢
宋宝莹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Angang Group Mining Co Ltd
Original Assignee
Angang Group Mining Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Angang Group Mining Co Ltd filed Critical Angang Group Mining Co Ltd
Priority to CN 201010187249 priority Critical patent/CN102230070B/en
Publication of CN102230070A publication Critical patent/CN102230070A/en
Application granted granted Critical
Publication of CN102230070B publication Critical patent/CN102230070B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Manufacture And Refinement Of Metals (AREA)
  • Disintegrating Or Milling (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention belongs to the technical field of ore dressing in metallurgy and mining industry, in particular relates to a three-stage pre-dressing and crushing process for low-grade magnetite. The process comprises the following steps of: feeding magnetite into a coarse crushing machine, transferring the material discharged from the coarse crushing machine to a first-stage dry-type magnetic pulley by using a rubber belt machine, delivering first-stage ore concentrate products to a middle crushing machine by using the rubber belt machine via a middle crushing machine ore bin, delivering middle crushing machine products to a second-stage magnetic pulley by using the rubber belt machine, screening ore concentrate products by a sieving machine to obtain on-sieve products and under-sieve products, crushing the on-sieve products by a fine crushing machine and mixing the crushed on-sieve products with the products crushed by the middle crushing machine, and then transferring the mixedcrushed products to the sieving machine, delivering the under-sieve products to a third-stage dry-type magnetic separation machine by a belt conveyer, wherein ore concentrates discharged from the from the third-stage dry-type magnetic separation machine are taken as the crushed final products, and waste stone from the magnetic separation machine is stored in a waste stone bin. According to the invention, the dry-type magnetic pulley operation is performed after the coarse crushing operation and the dry-type magnetic separation machine operation is performed after the fine crushing operation, the tailing rejection is performed in advance, therefore the milling grade can be improved and the ore grinding load can be reduced, and further, the purposes of reducing the energy consumption and increasing the economic benefits of ore dressing plants can be achieved.

Description

Three sections preliminary election crushing process of low-grade magnetite
Technical field
The invention belongs to the technique of preparing field in the metallurgical mining industry, particularly relate to three sections preliminary election crushing process of a kind of low-grade magnetite.
Background technology
In recent years along with the mine to deep mining, the orebody mining condition runs down, rock intercalation increases, the ore output grade descends.Since the rock of sneaking in a large number through broken, sort, the last person causes dressing expenses to increase, and rock easy argillization in grinding process, the raising of restriction iron concentrate grade.If low to grade, the mixed large ore of rock is given up, will cause that the rate of extraction is low, stripping ratio large, cost up, the wasting of resources, and can not satisfy the dressing-works to the demand of ore amount for the ore deposit ability.Therefore in order before ore grinding, to reject abandoned mine, improve and enter to grind grade, realize the energy-saving and cost-reducing of dressing-works, reduce beneficiation cost, adopt dry type pre-separation using magnetic pulley technique that magnetite is realized throwing in advance tail, this technique be thick broken in crushing operation or in add the dry type magnetic pulley after broken, realizes three section one closed circuit one technical process of throwing tail or two throwing tails.
The granularity of crushed product is 12~0mm.This kind crushing process still can't satisfy the ore grinding Beneficiation Feed Grade for the lower magnetic ore deposit of head grade.Cause the qualified gangue of an ore part after the thin broken to enter ore grinding, increase dressing expenses and use.
Summary of the invention
The purpose of this invention is to provide three sections preliminary election crushing process of a kind of low-grade magnetite, reject to greatest extent barren rock before ore grinding, raising enters to grind grade, realizes the energy-saving and cost-reducing of dressing-works, reduces beneficiation cost.
The objective of the invention is to realize by following technical proposals:
Three sections preliminary election crushing process of low-grade magnetite of the present invention is characterized in that comprising following processing step:
1) granularity that ships of stope is that the iron ore of 1000mm is sent into coarse breaking and is subjected to ore storage bin,
2) be subjected to the ore in the ore storage bin to feed one section primary crusher through the bar screen feeder,
3) send into one section dry separation magnetic pulley through the ore of one section primary crusher fragmentation,
4) mine tailing selected of one section dry separation magnetic pulley is sent to behind the refuse bin with the automobile outward transport,
5) granularity selected of one section dry separation magnetic pulley be the concentrate of 250-300mm send into send into behind the broken ore storage bin in two sections in two sections crusher carry out in two sections broken,
6) ore of crusher in crushing is sent to dummy car by conveyor in two sections, and dummy car is sent two sections in this ore into the dry separation magnetic pulley and carried out two stages of magnetic separation,
7) mine tailing selected of two sections dry separation magnetic pulleys is sent to behind the refuse bin with the automobile outward transport,
8) concentrate selected of two sections dry separation magnetic pulleys is sent into the vibratory screening apparatus ore storage bin by sending into vibratory screening apparatus to the ore deposit conveyor,
9) the vibratory screening apparatus oversize is sent into three sections type fine disintegrating machines after sending into the fine crushing ore storage bin, and being crushed to granularity is to return vibratory screening apparatus behind 75-100mm,
10) through-screen size of vibratory screening apparatus is that 12-0mm sends into dry-type magnetic separator for ore fine,
11) the dry-type magnetic separator for ore fine mine tailing is transported outward with automobile after sending into refuse bin,
12) concentrate selected of dry-type magnetic separator for ore fine is sent into power house.Described one section primary crusher is the PE900X1200 jaw crusher.
Described dry separation magnetic pulley is dry separation CTDG1212 magnetic pulley.
Described two sections secondary crushers are the HP400 cone crusher.
Described vibratory screening apparatus is the 2YA2460 vibratory screening apparatus.
Described dry-type magnetic separator for ore fine is the CTL1030 dry-type magnetic separator for ore fine.
Two sections preliminary election crushing process of low-grade magnetite of the present invention are a kind of three section one closed circuit three sections tailings discarding by preconcentration crushing process, magnetite is sent into primary mill, ore carries out fragmentation in crusher chamber, the primary mill discharge advances one section dry type magnetic pulley through conveyor drive, sub-elect one section concentrate product and barren rock, one section concentrate product is by broken machine during broken machine ore storage bin advances in the conveyor drive warp, middle crusher product advances two sections dry type magnetic pulleys through conveyor drive, sub-elect two sections concentrate products and barren rock, the concentrate product is divided into sieve upward and sieves lower two products through sieve apparatus, oversize behind the thin broken crusher machine with in product behind the broken crusher machine merge laggard sieve apparatus, screen undersize feeds three sections dry-type magnetic extractors through conveyor, the concentrate of three sections dry-type magnetic extractors is as the finished product of fragmentation, and the barren rock of magnetic separator advances refuse bin.
Broken design cycle of the present invention is: three sections tailings discarding by preconcentration, three section one closed circuit flow process.Thick, in establish the dry type magnetic separation machine operation after establishing the operation of dry separation magnetic pulley, thin broken after broken and throw in advance tail, can improve into the mill grade, reduce and enter the ore grinding amount, reach energy-saving and cost-reducing, improve the purpose of selecting factory's economic benefit.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with embodiment.
According to three sections preliminary election crushing process of low-grade magnetite of the present invention, it is characterized in that comprising following processing step:
1) granularity that ships of stope is that the iron ore 12 of 1000mm is sent into coarse breaking and is subjected to ore storage bin,
2) be subjected to the ore in the ore storage bin to feed one section primary crusher 1 through the bar screen feeder,
3) send into one section dry separation magnetic pulley 2 through the ore of one section primary crusher fragmentation,
4) mine tailing 8 selected of one section dry separation magnetic pulley 2 is sent to behind the refuse bin with the automobile outward transport,
5) granularity selected of one section dry separation magnetic pulley 2 be the concentrate of 250-300mm send into send into behind the broken ore storage bin in two sections in two sections crusher 3 carry out in two sections broken,
6) ore of crusher 3 fragmentations is sent to dummy car by conveyor in two sections, and dummy car is sent this ore into two sections dry separation magnetic pulleys 4 and carried out two stages of magnetic separation,
7) barren rock 9 selected of two sections dry separation magnetic pulleys 4 is sent to behind the refuse bin with the automobile outward transport,
8) concentrate selected of two sections dry separation magnetic pulleys 4 is sent into the vibratory screening apparatus ore storage bin by sending into vibratory screening apparatus 5 to the ore deposit conveyor,
9) oversize of vibratory screening apparatus 5 is sent into three sections fine crushers 6 after sending into the fine crushing ore storage bin, and being crushed to granularity is to return vibratory screening apparatus behind 75-100mm,
10) through-screen size of vibratory screening apparatus 5 is that 12-0mm sends into dry-type magnetic separator for ore fine 7,
11) barren rock 10 of dry-type magnetic separator for ore fine 7 is transported outward with automobile after sending into refuse bin,
12) concentrate 11 selected of dry-type magnetic separator for ore fine is sent into power house.
Embodiment
Described one section primary crusher is the PE900X1200 jaw crusher.
Described dry separation magnetic pulley is dry separation CTDG1212 magnetic pulley.
Described two sections secondary crushers are HP400 cone crusher 3
Described vibratory screening apparatus 5 is the 2YA2460 vibratory screening apparatus.
Described dry-type magnetic separator for ore fine 7 is the CTL1030 dry-type magnetic separator for ore fine.
The present invention throws in advance tail and can improve into the mill grade, reduce the ore grinding amount, reaches energy-saving and cost-reducing, improves the purpose of selecting factory's economic benefit.

Claims (6)

1. three sections preliminary election crushing process of a low-grade magnetite is characterized in that comprising following processing step:
1) granularity that ships of stope is that the iron ore of 1000mm is sent into coarse breaking and is subjected to ore storage bin,
2) be subjected to the ore in the ore storage bin to feed one section primary crusher through the bar screen feeder,
3) send into one section dry separation magnetic pulley through the ore of one section primary crusher fragmentation,
4) mine tailing selected of one section dry separation magnetic pulley is sent to behind the refuse bin with the automobile outward transport,
5) granularity selected of one section dry separation magnetic pulley be the concentrate of 250-300mm send into send into behind the broken ore storage bin in two sections in two sections crusher carry out in two sections broken,
6) ore of crusher in crushing is sent to dummy car by conveyor in two sections, and dummy car is sent two sections in this ore into the dry separation magnetic pulley and carried out two stages of magnetic separation,
7) mine tailing selected of two sections dry separation magnetic pulleys is sent to behind the refuse bin with the automobile outward transport,
8) concentrate selected of two sections dry separation magnetic pulleys is sent into the vibratory screening apparatus ore storage bin by sending into vibratory screening apparatus to the ore deposit conveyor,
9) oversize of vibratory screening apparatus is sent into three sections fine crushers after sending into the fine crushing ore storage bin, and being crushed to granularity is to return vibratory screening apparatus behind 75-100mm,
10) through-screen size of vibratory screening apparatus is that 12-0mm sends into dry-type magnetic separator for ore fine,
11) mine tailing of dry-type magnetic separator for ore fine is transported outward with automobile after sending into refuse bin,
12) concentrate selected of dry-type magnetic separator for ore fine is sent into power house.
2. three sections preliminary election crushing process of low-grade magnetite according to claim 1 is characterized in that described one section primary crusher is the PE900X1200 jaw crusher.
3. three sections preliminary election crushing process of low-grade magnetite according to claim 1 is characterized in that described dry separation magnetic pulley is dry separation CTDG1212 magnetic pulley.
4. three sections preliminary election crushing process of low-grade magnetite according to claim 1 is characterized in that described two sections secondary crushers are the HP400 cone crusher.
5. three sections preliminary election crushing process of low-grade magnetite according to claim 1 is characterized in that described vibratory screening apparatus is the 2YA2460 vibratory screening apparatus.
6. three sections preliminary election crushing process of low-grade magnetite according to claim 1 is characterized in that described dry-type magnetic separator for ore fine is the CTL1030 dry-type magnetic separator for ore fine.
CN 201010187249 2010-06-01 2010-06-01 Novel three-stage pre-dressing and crushing process for low-grade magnetite Active CN102230070B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010187249 CN102230070B (en) 2010-06-01 2010-06-01 Novel three-stage pre-dressing and crushing process for low-grade magnetite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010187249 CN102230070B (en) 2010-06-01 2010-06-01 Novel three-stage pre-dressing and crushing process for low-grade magnetite

Publications (2)

Publication Number Publication Date
CN102230070A CN102230070A (en) 2011-11-02
CN102230070B true CN102230070B (en) 2013-03-20

Family

ID=44842674

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010187249 Active CN102230070B (en) 2010-06-01 2010-06-01 Novel three-stage pre-dressing and crushing process for low-grade magnetite

Country Status (1)

Country Link
CN (1) CN102230070B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102489397B (en) * 2011-12-20 2013-08-07 鞍钢集团矿业公司 Dry crushing, grinding, grading and four-stage magnetic separation process of magnetite
CN103769292B (en) * 2014-01-10 2016-01-20 中钢集团马鞍山矿山研究院有限公司 A kind of high preliminary election technique containing mud, high-grade Complex iron ore
CN106111297B (en) * 2016-08-15 2019-04-09 马钢集团设计研究院有限责任公司 A kind of ore-dressing technique and its production system of chromium depleted zone
CN106938219A (en) * 2017-04-27 2017-07-11 酒泉钢铁(集团)有限责任公司 A kind of beneficiation method of extreme poverty sand iron ore
CN108262134A (en) * 2018-01-18 2018-07-10 辽宁科技大学 The broken six sections of pre-selections crushing process of three sections of low-grade magnetite
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
CN112808432A (en) * 2021-03-19 2021-05-18 辽宁科技学院 Processing technology for lean ore two-stage dry magnetic separation three-stage crushing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101130177A (en) * 2007-10-15 2008-02-27 王林 Mineral dressing technique for low ore grade iron ore and mineral dressing equipment thereof
CN101219413A (en) * 2008-01-22 2008-07-16 福州昌晖自动化系统有限公司 Technique for manufacturing hyperpure iron extract
CN101559403A (en) * 2009-05-31 2009-10-21 安徽大昌矿业集团有限公司 Method for concentrating extremely low-grade refractory magnetite
CN101579654A (en) * 2009-05-26 2009-11-18 包头市石宝铁矿集团有限责任公司 Iron ore powder mineral dressing process
CN101590441A (en) * 2008-05-26 2009-12-02 鞍钢集团矿业公司 Magnetite dry-separation tailing-discarding pre-separation technology

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101130177A (en) * 2007-10-15 2008-02-27 王林 Mineral dressing technique for low ore grade iron ore and mineral dressing equipment thereof
CN101219413A (en) * 2008-01-22 2008-07-16 福州昌晖自动化系统有限公司 Technique for manufacturing hyperpure iron extract
CN101590441A (en) * 2008-05-26 2009-12-02 鞍钢集团矿业公司 Magnetite dry-separation tailing-discarding pre-separation technology
CN101579654A (en) * 2009-05-26 2009-11-18 包头市石宝铁矿集团有限责任公司 Iron ore powder mineral dressing process
CN101559403A (en) * 2009-05-31 2009-10-21 安徽大昌矿业集团有限公司 Method for concentrating extremely low-grade refractory magnetite

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
温贵等.白云鄂博主东矿选厂破碎工艺研究.《包钢科技》.2009,第35卷37-40. *

Also Published As

Publication number Publication date
CN102230070A (en) 2011-11-02

Similar Documents

Publication Publication Date Title
CN104874459B (en) Useless ore-dressing technique is thrown in a kind of low-grade magnetite pre-selection
CN102230070B (en) Novel three-stage pre-dressing and crushing process for low-grade magnetite
CN104888960B (en) The magnetic of the red composite ore of fine grain teeth cloth magnetic floats sorting process
CN101590441B (en) Magnetite dry-separation tailing-discarding pre-separation technology
CN103464275B (en) Beneficiation method and device for quartz vein type gold deposit
CN108014913B (en) Ultra-lean magnetite beneficiation method and system for associated phosphorus minerals
CN109013037B (en) Magnetite beneficiation process for improving coarse fraction tailing content and mill processing capacity
CN204602376U (en) A kind of ore treatment device
CN104549692A (en) Mineral processing process of copper sulphide ores containing high-grade native copper
CN105057072A (en) Comprehensive recovery technology of multi-metal low-grade ore and ore-bearing waste rock resources thereof
CN102814227A (en) Floating selection method of nonferrous metal mineral powder
CN102189038A (en) Preliminary separation process for ferromagnetic ore separation
CN105903535A (en) High-efficiency and low-energy-consumption mineral pulverizing technique and system
CN107029871A (en) A kind of beneficiation method of magnetic composite ore
CN104815736A (en) Preselecting process for surrounding rock containing magnetite
CN108262134A (en) The broken six sections of pre-selections crushing process of three sections of low-grade magnetite
CN107661814B (en) Screening-magnetic separation-ore grinding-magnetic separation flow equipment arrangement system
CN102230071B (en) Novel technology of low-grade magnetite two-stage pre-selecting and crushing
CN214439946U (en) Intelligent sorting device for improving lead-containing molybdenum ore selection grade
CN102259058A (en) New process of closing in three sections and preselecting and crushing in two sections
CN103721839A (en) High pressure roller mill product wet type pre-selection system
CN202238241U (en) Dry magnetic pre-separating device for fine broken ores
CN203540694U (en) High-pressure roller-grinded product wet-type preselecting system
CN203764370U (en) Crushing and transportation system for deep mining of iron ores in mine
CN111013809B (en) Mineral processing technology for separating, grinding, sorting, upgrading and tailing reducing of lava ore

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 114051 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong

Patentee after: Anshan Iron and Steel Group Mining Co., Ltd.

Address before: 114051 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong

Patentee before: Anshan Iron & Steel Group Mining Co., Ltd.