CN107149978A - A kind of ore-dressing technique that tumbling ball mill is substituted with agitating mill - Google Patents

A kind of ore-dressing technique that tumbling ball mill is substituted with agitating mill Download PDF

Info

Publication number
CN107149978A
CN107149978A CN201710536453.XA CN201710536453A CN107149978A CN 107149978 A CN107149978 A CN 107149978A CN 201710536453 A CN201710536453 A CN 201710536453A CN 107149978 A CN107149978 A CN 107149978A
Authority
CN
China
Prior art keywords
stages
magnetic separation
mill
ball
ore
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.)
Granted
Application number
CN201710536453.XA
Other languages
Chinese (zh)
Other versions
CN107149978B (en
Inventor
刘雁翎
刘杰
郭旺
李艳军
陈国岩
程杰
陈宇
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.)
Ansteel Mining Co Ltd
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 CN201710536453.XA priority Critical patent/CN107149978B/en
Publication of CN107149978A publication Critical patent/CN107149978A/en
Application granted granted Critical
Publication of CN107149978B publication Critical patent/CN107149978B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
    • B03B5/34—Applications of hydrocyclones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
    • B03B5/52—Spiral classifiers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The present invention relates to a kind of ore-dressing technique that conventional drum type ball mill is substituted with agitating mill, including raw ore through primary grinding ball mill and graded operation, coarse fraction product returns to one section of ball mill and regrinded, fine fraction product feeds a stage magnetic separator, one stages of magnetic separation concentrate feeds one section of cyclone and is classified again, and fine fraction product feeds primary dewatering groove and is dehydrated, and its concentration is 40% ~ 50%, then two stages of magnetic separation are fed, the mine tailing of two stages of magnetic separation concentrate and two stages of magnetic separation is obtained；It is characterized in that：Also comprise the following steps：The concentrate of two stages of magnetic separation feeds Ball-stirring mill and two sections of cyclone classification operations, + the 0.038mm of Ball-stirring mill coarse fraction product returns to Ball-stirring mill and regrinded, and the 0.038mm of Ball-stirring mill accounts for 80% ~ 85% fine fraction product by three stages of magnetic separation and once filters and can obtain more than TFe67%, the iron ore concentrate of the rate of recovery more than 80%.The present invention substitutes the conventional drum type ball mill of three sections of ore grindings using agitating mill, and ore milling product is directly entered three stage magnetic separators and can obtain qualified concentrate containing, shortens flow.

Description

A kind of ore-dressing technique that tumbling ball mill is substituted with agitating mill
Technical field
The invention belongs to technical field of beneficiation, more particularly to a kind of dresser that tumbling ball mill is substituted with Ball-stirring mill Skill.
Technical background
For a long time, three sections of ore grindings use conventional drum type ball mill as fine grinding equipment, less efficient, due to by certainly Body structure feature and stress mode limitation, when being less than 45 μm of materials with 0785.6 cloth granularity, it is difficult to effectively realize micro-size fraction The refinement and dissociation of mineral, easily cause the easy argillization of valuable mineral, cause valuable mineral to lose；Ore milling product thickness skewness It is even, regrind that efficiency is low, effect is poor, the problems such as middling cycle amount is big；In addition, grinding process energy consumption is also greatly improved.Work as thing simultaneously Composition to be reclaimed in material is in fine particles during a large amount of enrichments, in addition it is also necessary to which dusting cover is used cooperatively, and dusting cover is alternatively sieved and set It is standby, screenings grade can be effectively improved, the concentrate of qualified grade is timely and effectively selected, reduces and enters next discontinuous running Ore deposit amount, but dusting cover is easily blocked up, and causes to sieve sand return amount greatly, therefore cause low production efficiency, long flow path, stability poor.This is with regard to phase The length of flow that answers add, cost of equipment, capital construction input, and later equipment maintenance cost etc..Therefore, raising is regrinded Operating efficiency, realizes the abundant dissociation of iron mineral, is the key for improving the system iron concentrate grade and the rate of recovery.
Site inspection result shows, current Regrinding uses conventional drum type ball mill, regrind feed preparation unit size- 0.038mm contents are 45.78%, and ore discharge granularity -0.038mm contents are 54.61%, and -0.038mm contents improve only 8.83 hundred Branch, iron mineral liberation degree of minerals only improves 5 percentage points or so.After three sections of ball millings, ore milling product is needed by two sections It is dehydrated groove, three sections of low intensity magnetic separations, two sections of dusting covers, three sections of dehydration grooves, four sections of low intensity magnetic separations, two sections of dusting covers, four sections of dehydration grooves, five sections of weak magnetics Choosing, one section of filtering could obtain the iron ore concentrate of grade 66.53%, and its flow is longer, causes beneficiation cost higher.
The content of the invention
It is an object of the invention to provide a kind of energy can be reduced to the process optimization of regrinding and reconcentration system, simplification of flowsheet Consumption, improves the grade and the rate of recovery of iron ore concentrate, and reduce beneficiation cost substitutes conventional drum type ball mill with agitating mill Ore-dressing technique.
The purpose of the present invention is realized by following technical proposals.
A kind of ore-dressing technique that tumbling ball mill is substituted with agitating mill of the present invention, comprises the following steps：
（1）Raw ore is through primary grinding ball mill ore grinding, and ore milling product enters spiral concentrator and carries out graded operation, coarse fraction product Return to one section of ball mill to regrind, granularity reaches that -0.074mm accounts for 45% ~ 50% fine fraction product and feeds a stage magnetic separator and selected Not, a stages of magnetic separation concentrate and a stages of magnetic separation mine tailing that grade is 45% ~ 50%, a direct jettisoning of stages of magnetic separation mine tailing are obtained；
（2）One stages of magnetic separation concentrate feeds one section of cyclone and is classified again, and+0.074mm coarse fraction products are through secondary grinding After return to a stages of magnetic separation, the following fine fraction products of -0.074mm feed primary dewatering groove and are dehydrated, its concentration be 40% ~ 50%, Then two stages of magnetic separation are fed, the mine tailing of two stages of magnetic separation concentrate that grade is 50% ~ 60% and two stages of magnetic separation are obtained, secondly stages of magnetic separation The direct jettisoning of mine tailing；
It is characterized in that：Also comprise the following steps：
（3）The concentrate of two stages of magnetic separation feeds Ball-stirring mill and two sections of cyclone classification operations ,+0.038mm of Ball-stirring mill coarse fraction Product returns to Ball-stirring mill and regrinded, and -0.0 38mm of Ball-stirring mill accounts for 80% ~ 85% fine fraction product by three stages of magnetic separation and once mistake Filter can obtain more than TFe67%, the iron ore concentrate of the rate of recovery more than 80%.
Agitating mill is a kind of new fine grinding equipment, available for fine grinding or Ultrafine Grinding.Driven by motor through reductor Agitator, makees slow rotation, milling medium and thing in the cylinder full of certain milling medium (steel ball, corundum ball or gravel etc.) Material makees overall multidimensional shuttling movement and spinning motion in cylinder.Milling medium and material are inside and outside mutually handed over up and down in cylinder Change, the motion under the extruding force that milling medium weight power and spiral revolution are produced and produce levigate, scrubbing action and a small amount of Impact and shear action, so that effectively fine grinding material.The reason for agitator mill is than ball grinder saving energy is that it saves the skilful of the energy Wonderful design principle so that the energy consumption overwhelming majority, which is used in, directly to be stirred medium to reach grinding effect, rather than the empty consumption energy exists Rotate or vibrate huge heavy grinding cylinder.
It is an advantage of the invention that：
1）Due to employing Ball-stirring mill in three sections of ore grindings, Ball-stirring mill can make granularity reach 80% for -0.0 38mm fine fraction products ~ 85%, one section of dusting cover and two sections of dusting covers can be thus omitted, magnetic separator, three stages of magnetic separation, four stages of magnetic separation and five stages of magnetic separation is dehydrated Operation, two sections of dehydration grooves, three sections of dehydration grooves and four sections of dehydration groove operations, effectively shortens technological process, saves space, also simultaneously The grade and the rate of recovery of iron ore concentrate are improved, beneficiation cost is reduced；
2）Due to the ore grinding principle and mechanical structure and the difference of traditional ball mill of Ball-stirring mill, its grinding efficiency is high, and capital construction is thrown Enter it is small, so as to reduce production process energy consumption.
Brief description of the drawings
Fig. 1 is former process chart.
Fig. 2 is process chart of the invention.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As shown in Fig. 2, a kind of ore-dressing technique that tumbling ball mill is substituted with agitating mill of the invention, including under Row step：
（1）Raw ore is through primary grinding ball mill ore grinding, and ore milling product enters spiral concentrator and carries out graded operation, coarse fraction product Return to one section of ball mill to regrind, granularity reaches that -0.074mm accounts for 45% ~ 50% fine fraction product and feeds a stage magnetic separator and selected Not, a stages of magnetic separation concentrate and a stages of magnetic separation mine tailing that grade is 45% ~ 50%, a direct jettisoning of stages of magnetic separation mine tailing are obtained；
（2）One stages of magnetic separation concentrate feeds one section of cyclone and is classified again, and+0.074mm coarse fraction products are through secondary grinding After return to a stages of magnetic separation, the following fine fraction products of -0.074mm feed primary dewatering groove and are dehydrated, its concentration be 40% ~ 50%, Then two stages of magnetic separation are fed, the mine tailing of two stages of magnetic separation concentrate that grade is 50% ~ 60% and two stages of magnetic separation are obtained, secondly stages of magnetic separation The direct jettisoning of mine tailing；
It is characterized in that：Also comprise the following steps：
（3）The concentrate of two stages of magnetic separation feeds Ball-stirring mill and two sections of cyclone classification operations ,+0.038mm of Ball-stirring mill coarse fraction Product returns to Ball-stirring mill and regrinded, and -0.0 38mm of Ball-stirring mill accounts for 80% ~ 85% fine fraction product by three stages of magnetic separation and once mistake Filter can obtain more than TFe67%, the iron ore concentrate of the rate of recovery more than 80%.
The present invention substitutes the conventional drum type ball mill of three sections of ore grindings, -0.0 38mm of Ball-stirring mill using agitating mill The fine fraction product for accounting for 80% ~ 85% is directly entered three stages of magnetic separation operations and secondary filter machine can obtain qualified concentrate containing so that choosing Ore deposit technological process is more rational.On the premise of final concentrate grade and the rate of recovery are able to guarantee, shorten flow, reduction ore dressing into This.

Claims (1)

1. a kind of ore-dressing technique that tumbling ball mill is substituted with agitating mill, comprises the following steps：
（1）Raw ore is through primary grinding ball mill ore grinding, and ore milling product enters spiral concentrator and carries out graded operation, coarse fraction product Return to one section of ball mill to regrind, granularity reaches that -0.074mm accounts for 45% ~ 50% fine fraction product and feeds a stage magnetic separator and selected Not, a stages of magnetic separation concentrate and a stages of magnetic separation mine tailing that grade is 45% ~ 50%, a direct jettisoning of stages of magnetic separation mine tailing are obtained；
（2）One stages of magnetic separation concentrate feeds one section of cyclone and is classified again, and+0.074mm coarse fraction products are through secondary grinding After return to a stages of magnetic separation, the following fine fraction products of -0.074mm feed primary dewatering groove and are dehydrated, its concentration be 40% ~ 50%, Then two stages of magnetic separation are fed, the mine tailing of two stages of magnetic separation concentrate that grade is 50% ~ 60% and two stages of magnetic separation are obtained, secondly stages of magnetic separation The direct jettisoning of mine tailing；
It is characterized in that：Also comprise the following steps：
（3）The concentrate of two stages of magnetic separation feeds Ball-stirring mill and two sections of cyclone classification operations ,+0.038mm of Ball-stirring mill coarse fraction Product returns to Ball-stirring mill and regrinded, and -0.0 38mm of Ball-stirring mill accounts for 80% ~ 85% fine fraction product by three stages of magnetic separation and once mistake Filter can obtain more than TFe67%, the iron ore concentrate of the rate of recovery more than 80%.
CN201710536453.XA 2017-07-04 2017-07-04 A kind of ore-dressing technique with agitating mill substitution tumbling ball mill Active CN107149978B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710536453.XA CN107149978B (en) 2017-07-04 2017-07-04 A kind of ore-dressing technique with agitating mill substitution tumbling ball mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710536453.XA CN107149978B (en) 2017-07-04 2017-07-04 A kind of ore-dressing technique with agitating mill substitution tumbling ball mill

Publications (2)

Publication Number Publication Date
CN107149978A true CN107149978A (en) 2017-09-12
CN107149978B CN107149978B (en) 2019-11-05

Family

ID=59795576

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710536453.XA Active CN107149978B (en) 2017-07-04 2017-07-04 A kind of ore-dressing technique with agitating mill substitution tumbling ball mill

Country Status (1)

Country Link
CN (1) CN107149978B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107552203A (en) * 2017-09-25 2018-01-09 安徽金安矿业有限公司 A kind of method and device for improving ball mill grinding efficiency
CN108339661A (en) * 2018-02-09 2018-07-31 鞍钢集团矿业设计研究院有限公司 The full permanent magnetism short route of stage grinding handles mixed type iron ore technique
CN111068897A (en) * 2019-12-20 2020-04-28 辽宁科技学院 Fine particle magnetite beneficiation process
CN112337621A (en) * 2020-10-13 2021-02-09 攀钢集团攀枝花钢铁研究院有限公司 Production process and equipment of high-grade vanadium-titanium magnetite concentrate

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3040099A1 (en) * 1980-10-24 1982-06-03 Klöckner-Humboldt-Deutz AG, 5000 Köln Ore dressing grinding circuit - passes underflow of cyclone classifier to water-only cyclone for power savings
CN101966485A (en) * 2009-07-28 2011-02-09 鞍钢集团矿业公司 Before-filtering magnetic separator concentrating process
CN102259051A (en) * 2010-08-24 2011-11-30 鞍钢集团矿业公司 Novel fine poor magnetic iron ore dressing process using centrifuges
CN102363218A (en) * 2011-11-25 2012-02-29 北京君致清科技有限公司 Method for producing copper-powder-containing iron by reducing copper-containing furnace cinders directly
CN102489387A (en) * 2011-12-21 2012-06-13 鞍钢集团矿业设计研究院 Extremely lean magnetite beneficiating process
CN105734279A (en) * 2016-03-28 2016-07-06 东北大学 Iron ore concentrate preparation method capable of lowering coercive force of magnetized and roasted ore of refractory iron ore

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3040099A1 (en) * 1980-10-24 1982-06-03 Klöckner-Humboldt-Deutz AG, 5000 Köln Ore dressing grinding circuit - passes underflow of cyclone classifier to water-only cyclone for power savings
CN101966485A (en) * 2009-07-28 2011-02-09 鞍钢集团矿业公司 Before-filtering magnetic separator concentrating process
CN102259051A (en) * 2010-08-24 2011-11-30 鞍钢集团矿业公司 Novel fine poor magnetic iron ore dressing process using centrifuges
CN102363218A (en) * 2011-11-25 2012-02-29 北京君致清科技有限公司 Method for producing copper-powder-containing iron by reducing copper-containing furnace cinders directly
CN102489387A (en) * 2011-12-21 2012-06-13 鞍钢集团矿业设计研究院 Extremely lean magnetite beneficiating process
CN105734279A (en) * 2016-03-28 2016-07-06 东北大学 Iron ore concentrate preparation method capable of lowering coercive force of magnetized and roasted ore of refractory iron ore

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107552203A (en) * 2017-09-25 2018-01-09 安徽金安矿业有限公司 A kind of method and device for improving ball mill grinding efficiency
CN108339661A (en) * 2018-02-09 2018-07-31 鞍钢集团矿业设计研究院有限公司 The full permanent magnetism short route of stage grinding handles mixed type iron ore technique
CN111068897A (en) * 2019-12-20 2020-04-28 辽宁科技学院 Fine particle magnetite beneficiation process
CN112337621A (en) * 2020-10-13 2021-02-09 攀钢集团攀枝花钢铁研究院有限公司 Production process and equipment of high-grade vanadium-titanium magnetite concentrate
CN112337621B (en) * 2020-10-13 2023-02-21 攀钢集团攀枝花钢铁研究院有限公司 Production process and equipment of high-grade vanadium-titanium magnetite concentrate

Also Published As

Publication number Publication date
CN107149978B (en) 2019-11-05

Similar Documents

Publication Publication Date Title
CN101502819B (en) Pre-selection method of low-ore grade magnetic iron ore
CN104722394B (en) A kind of compound poor iron ore pre-selection new technology and its production system
CN109894257B (en) Comprehensive utilization method for spodumene beneficiation
CN105413842B (en) The ore-dressing technique of Ultra-low-grade magnetite and system
CN100569381C (en) The iron-removing concentrating process of potassic feldspar
CN105855019B (en) Ultrafine crushing-grading magnetic separation method for magnetite
CN107149978B (en) A kind of ore-dressing technique with agitating mill substitution tumbling ball mill
CN106000598B (en) Chromium depleted zone high pressure roller mill-dry type pre-selection-Fine screening-regrinding technology
CN108380379B (en) Efficient and environment-friendly beneficiation method for low-grade magnetite
CN103962214A (en) Combined beneficiation method and combined beneficiation system for comprehensive recovery of associated iron-phosphate minerals
CN104722396B (en) Comprehensive utilization method of magnetite-containing country rock
CN106755650B (en) Slag produces high activity steel-making slag powder and the technique of inert mineral product
CN102030462A (en) Processing method for refined quartz sand
CN105057089A (en) Beneficiation technology for rock-type primary ilmenite
CN105536984B (en) A kind of magnetic selection method having both tailings discarding by preconcentration and thickness grading and three product magnetic separators
CN111285405A (en) Method for separating calcium ferrite and magnesium ferrite from steel slag magnetic separation tailings
CN104384020A (en) Depth-induced crushing mineral separation technology of super-lean magnetic iron ore
CN104815736A (en) Preselecting process for surrounding rock containing magnetite
CN105855020A (en) High-pressure roller milling-dry preliminary election technology for lean magnetite ore
CN110624686A (en) Magnetite beneficiation process capable of fully releasing mill capacity
CN103230832B (en) Beneficiation method for recovering fine fraction iron from strong magnetic separation gangues of ferric oxide ores
CN108993760A (en) A kind of low-grade difficulty of weathering selects manganese ore sorting process
CN104324798A (en) Ore dressing method for magnetic ores
CN102814224A (en) Process of ore dressing and grinding
CN108144743B (en) Using the low-grade uranium ferro-boron associated minerals ore-dressing technique method of high-pressure roller mill

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant