CN108465552A - A kind of method of single magnetic separation process recycling magnetic iron ore tailing - Google Patents
A kind of method of single magnetic separation process recycling magnetic iron ore tailing Download PDFInfo
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- CN108465552A CN108465552A CN201810184947.0A CN201810184947A CN108465552A CN 108465552 A CN108465552 A CN 108465552A CN 201810184947 A CN201810184947 A CN 201810184947A CN 108465552 A CN108465552 A CN 108465552A
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- magnetic
- separator
- tailing
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- concentrate
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- 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
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
Abstract
The present invention relates to a kind of methods that single magnetic separation process recycles magnetic tailing, include the following steps：It is 10 ~ 12% by Iron grade, the magnetic tailing that magnetic iron content is 1 ~ 3% feeds a stages of magnetic separation, and a magnetic essence feeds the closed circuit grinding of cyclone and tower grinding machine composition, and particle size range is that the closed circuit grinding overflow product of 0.046mm contents 90% ~ 95% feeds two stages of magnetic separation；Two magnetic essences feed magnetic and shake ore separators, and the magnetic ore separators concentrate that shakes feeds Magnetic field screening separator, and Magnetic field screening separator oversize feeds dehydration magnetic separator, and Magnetic field screening separator undersize returns to closed circuit grinding；Dehydration magnetic separator concentrate is the final concentrate that grade is 64.5% or more；Dehydration magnetic separator tailing and a magnetic tail, two magnetic tails, magnetic the ore separators tailing that shakes merge into grade as 7 ~ 9% true tailings.It is an advantage of the invention that：Magnetic iron content is reduced to 0.5% hereinafter, reduction grinding particle size 5 ~ 10%, realizes effective recycling to superfine rank iron mineral in one magnetic tail.
Description
Technical field
The invention belongs to technical field of beneficiation, and in particular to valuable mineral disseminated grain size in 30 microns or less magnetic tailings
A kind of method of the single magnetic separation process recycling magnetic tailing sorted.
Background technology
The method that magnetic tailing of the valuable mineral based on Armco magnetic iron mineral is recycled at present, it is common that use magnetic
Choosing-dusting cover-magnetic separation process or single magnetic separation process are sorted, and are returned to the Armco magnetic iron mineral in magnetic tailing to reach
It receives, obtains the purpose of qualified iron ore concentrate.The selection of single magnetic separation process or magnetic separation-dusting cover-magnetic separation process is according to magnetic tailing
The size of middle Armco magnetic iron mineral disseminated grain size and determination, it is specifically described as follows：
Magnetic separation-dusting cover-magnetic separation process：
For Armco magnetic iron mineral disseminated grain size in magnetic tailing at 30 microns or more, regrind granularity -0.074mm contents 95% with
Under magnetic tailing, magnetic separation-dusting cover-magnetic separation process generally can be used, it is common that throwing tail is carried out using disc type recycling machine first, so
It after being regrinded afterwards to recycling machine concentrate, then carries out weak magnetic machine and sorts, weak magnetic machine concentrate feeds dusting cover, and dusting cover undersize passes through again
Become final concentrate after weak magnetic machine is selected, it is weak that the return of dusting cover oversize feeds weak magnetic machine-dusting cover-again after regrinding or individually regrinding
Magnetomechanical is sorted, and is constituted closed circuit；
Single magnetic separation process：
For Armco magnetic iron mineral disseminated grain size in magnetic tailing at 30 microns hereinafter, regrind granularity -0.046mm contents 90% with
On magnetic tailing, single magnetic separation process generally can be used, it is common that throwing tail is carried out using disc type recycling machine first, then to return
After receipts machine concentrate is regrinded, then is combined using multistage magnetic separator or dehydration slot and magnetic separator and sort acquisition concentrate.
For iron mineral disseminated grain size at 0 ~ 30 micron, regrind granularity 90% or more -0.046mm contents particulate magnetic
Iron ore mine, the shortcomings that being sorted using single magnetic separation process or magnetic separation-dusting cover-magnetic separation process be：
1）Magnetic concentration working regrind granularity it is meticulous when be easy to cause magnetism and be mingled with, high-grade concentrate can not be obtained；
2）It is meticulous to regrind granularity, mutually in requisition for thinner dusting cover screen size, sieve pore blockade is easily caused in production；Otherwise, it needs
Lower dusting cover feed ore concentration and larger flushing water are wanted, is not easy to realize in production.
In addition, being recycled to magnetic tailing using disc type recycling machine, although treating capacity is larger, and the rate of recovery is relatively low,
Magnetic iron content is still greater than 0.5% in disc type recycling machine tailing.
Invention content
The object of the present invention is to provide what is sorted in 30 microns of magnetic tailings below to valuable mineral disseminated grain size
A kind of method of single magnetic separation process recycling magnetic tailing.
The invention is realized in this way.
The method of a kind of single magnetic separation process recycling magnetic tailing of the present invention, it is characterised in that include the following steps：
1）It is 10 ~ 12% by Iron grade, the magnetic tailing that magnetic iron content is 1 ~ 3% feeds one section that magnetic induction intensity is 400mT
Drum magnetic separator operation, one section of drum magnetic separator concentrate feed the closed circuit grinding system of cyclone and tower grinding machine composition, granularity model
Enclose two sections that the closed circuit grinding system overflow product for -0.046mm grain size contents 90% ~ 95% feeds that magnetic induction intensity is 250mT
Drum magnetic separator operation；
2）Two sections of drum magnetic separator concentrate feed magnetic and shake ore separators, and the magnetic ore separators concentrate that shakes feeds Magnetic field screening separator, magnetic field screening
Dehydration magnetic separator is fed on machine sieve, Magnetic field screening separator sieve is lower to return to closed circuit grinding system；Dehydration magnetic separator concentrate is final concentrate,
Final concentrate grade is 64.5% or more；It is dehydrated magnetic separator tailing and one section of drum magnetic separator tailing, two sections of drum magnetic separator tails
Mine, magnetic tail mine of shaking merge into true tailings, true tailings grade 7 ~ 9%.
The present invention replaces traditional disk recycling machine using one section of drum magnetic separator, shakes ore separators instead of traditional using magnetic
Weak magnetic machine, using Magnetic field screening separator.
It is an advantage of the invention that：
1）The present invention recycles iron ore concentrate from valuable mineral disseminated grain size in 30 microns of magnetic tailings below, using one section of cartridge type
Magnetic separator replaces disk recycling machine, and magnetic iron content in one section of drum magnetic separator tailing is made to be reduced to 0.5% hereinafter, improving money
Source utilization rate；
2）The present invention, which is combined by using magnetic separator with Magnetic field screening separator, can reduce grinding particle size 5 ~ 10%, save production cost；
3）The present invention realizes effective recycling to superfine rank iron mineral by using the magnetic ore separators that shakes, and improves operation concentrate grade
1 ~ 2 percentage point, reduce by 3 ~ 5 percentage points of operation tailings grade.
Description of the drawings
Fig. 1 is the method flow diagram that single magnetic separation process recycles magnetic tailing.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1：
Embodiment one：
A kind of method of single magnetic separation process recycling magnetic tailing of the present invention, includes the following steps：
1）It is 10.04% by Iron grade, the magnetic tailing that magnetic iron content is 1.65% feeds one that magnetic induction intensity is 400mT
Section drum magnetic separator operation, one section of drum magnetic separator concentrate feed the closed circuit grinding system of cyclone and tower grinding machine composition, granularity
The closed circuit grinding system overflow product of ranging from -0.046mm grain size contents 91.5% feeds two sections that magnetic induction intensity is 250mT
Drum magnetic separator operation；
2）Two sections of drum magnetic separator concentrate feed magnetic and shake ore separators, and the magnetic ore separators concentrate that shakes feeds Magnetic field screening separator, magnetic field screening
Machine oversize feeds dehydration magnetic separator, and Magnetic field screening separator undersize returns to closed circuit grinding system；Grade be 64.87% it is de-
Water magnetic separator concentrate is final concentrate；Be dehydrated magnetic separator tailing and one section of drum magnetic separator tailing, two sections of drum magnetic separator tailings,
The magnetic ore separators tailing that shakes merges into true tailings, and true tailings grade is 8.21%.
Magnetic iron content is 0.40% in one section of drum magnetic separator tailing.
The background lectromagnetism field of Magnetic field screening separator is 60 ~ 100 mT
Embodiment two：
A kind of method of single magnetic separation process recycling magnetic tailing of the present invention, includes the following steps：
1）It is 10.86% by Iron grade, the magnetic tailing that magnetic iron content is 2.25% feeds one that magnetic induction intensity is 400mT
Section drum magnetic separator operation, one section of drum magnetic separator concentrate feed the closed circuit grinding system of cyclone and tower grinding machine composition, granularity
The closed circuit grinding system overflow product of ranging from -0.046mm grain size contents 94% feeds two sections of cylinders that magnetic induction intensity is 250mT
Formula magnetic separation machine operation；
2）Two sections of drum magnetic separator concentrate feed magnetic and shake ore separators, and the magnetic ore separators concentrate that shakes feeds Magnetic field screening separator, magnetic field screening
Machine oversize feeds dehydration magnetic separator, and Magnetic field screening separator undersize returns to closed circuit grinding system；Grade be 65.77% it is de-
Water magnetic separator concentrate is final concentrate；Be dehydrated magnetic separator tailing and one section of drum magnetic separator tailing, two sections of drum magnetic separator tailings,
The magnetic ore separators tailing that shakes merges into true tailings, and true tailings grade is 8.62%.
Claims (3)
1. a kind of method of single magnetic separation process recycling magnetic tailing, it is characterised in that include the following steps：
1）It is 10 ~ 12% by Iron grade, the magnetic tailing that magnetic iron content is 1 ~ 3% feeds one section of drum magnetic separator operation, one section
Drum magnetic separator concentrate feeds the closed circuit grinding system of cyclone and tower grinding machine composition, and particle size range is -0.046mm grain size contents
90% ~ 95% closed circuit grinding system overflow product feeds two sections of drum magnetic separator operations；
2）Two sections of drum magnetic separator concentrate feed magnetic and shake ore separators, and the magnetic ore separators concentrate that shakes feeds Magnetic field screening separator, magnetic field screening
Dehydration magnetic separator is fed on machine sieve, Magnetic field screening separator sieve is lower to return to closed circuit grinding system；Dehydration magnetic separator concentrate is final concentrate,
Final concentrate grade is 64.5% or more；It is dehydrated magnetic separator tailing and one section of drum magnetic separator tailing, two sections of drum magnetic separator tails
Mine, magnetic the ore separators tailing that shakes merge into true tailings, true tailings grade 7 ~ 9%.
2. the method for single magnetic separation process recycling magnetic tailing according to claim 1, it is characterised in that described one section
The magnetic induction intensity of drum magnetic separator is 400mT, in one section of drum magnetic separator tailing magnetic iron content 0.50% hereinafter, described
Two sections of drum magnetic separators magnetic induction intensity be 250mT.
3. the method for single magnetic separation process recycling magnetic tailing according to claim 1, it is characterised in that the magnetic field
The background lectromagnetism field of screening machine is 60 ~ 100 mT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184947.0A CN108465552A (en) | 2018-03-07 | 2018-03-07 | A kind of method of single magnetic separation process recycling magnetic iron ore tailing |
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| CN201810184947.0A CN108465552A (en) | 2018-03-07 | 2018-03-07 | A kind of method of single magnetic separation process recycling magnetic iron ore tailing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201277A (en) * | 2018-09-20 | 2019-01-15 | 鞍钢集团矿业有限公司 | Technique is selected in a kind of Anshan type lean octahedral iron ore mine tailing high efficiente callback again |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3625354A (en) * | 1968-01-23 | 1971-12-07 | Metallgesellschaft Ag | Process for magnetically separating reduced iron-containing materials discharged from a rotary kiln |
| CN102259053A (en) * | 2010-10-30 | 2011-11-30 | 鞍钢集团矿业公司 | Method for recovering iron resources in reverse flotation tailings |
| CN102430468A (en) * | 2011-09-19 | 2012-05-02 | 鞍钢集团矿业公司 | Magnetism-gravity combined separation technology for magnetic hematite mixed type rough concentrate |
| CN102698871A (en) * | 2012-06-17 | 2012-10-03 | 鞍钢集团矿业公司 | Ore dressing technology for treating vanadium titano-magnetite |
| CN103406197A (en) * | 2013-07-31 | 2013-11-27 | 鞍钢集团矿业公司 | Technology for screening iron ore concentrate from mineral tailing of low-grade ore |
| CN103447144A (en) * | 2013-08-27 | 2013-12-18 | 安徽大昌矿业集团有限公司 | Method for raising iron content and reducing silicon in concentrate by means of low-intensity magnetic separation process |
| CN105195303A (en) * | 2015-08-13 | 2015-12-30 | 中国地质科学院郑州矿产综合利用研究所 | Novel mineral processing technology for improving quality and increasing yield by magnetic field screening method |
| CN105289838A (en) * | 2015-11-05 | 2016-02-03 | 鞍钢集团矿业公司 | Technology for recycling tailings through the process of weak magnetism concentration, roasting and regrinding magnetic separation |
-
2018
- 2018-03-07 CN CN201810184947.0A patent/CN108465552A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3625354A (en) * | 1968-01-23 | 1971-12-07 | Metallgesellschaft Ag | Process for magnetically separating reduced iron-containing materials discharged from a rotary kiln |
| CN102259053A (en) * | 2010-10-30 | 2011-11-30 | 鞍钢集团矿业公司 | Method for recovering iron resources in reverse flotation tailings |
| CN102430468A (en) * | 2011-09-19 | 2012-05-02 | 鞍钢集团矿业公司 | Magnetism-gravity combined separation technology for magnetic hematite mixed type rough concentrate |
| CN102698871A (en) * | 2012-06-17 | 2012-10-03 | 鞍钢集团矿业公司 | Ore dressing technology for treating vanadium titano-magnetite |
| CN103406197A (en) * | 2013-07-31 | 2013-11-27 | 鞍钢集团矿业公司 | Technology for screening iron ore concentrate from mineral tailing of low-grade ore |
| CN103447144A (en) * | 2013-08-27 | 2013-12-18 | 安徽大昌矿业集团有限公司 | Method for raising iron content and reducing silicon in concentrate by means of low-intensity magnetic separation process |
| CN105195303A (en) * | 2015-08-13 | 2015-12-30 | 中国地质科学院郑州矿产综合利用研究所 | Novel mineral processing technology for improving quality and increasing yield by magnetic field screening method |
| CN105289838A (en) * | 2015-11-05 | 2016-02-03 | 鞍钢集团矿业公司 | Technology for recycling tailings through the process of weak magnetism concentration, roasting and regrinding magnetic separation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201277A (en) * | 2018-09-20 | 2019-01-15 | 鞍钢集团矿业有限公司 | Technique is selected in a kind of Anshan type lean octahedral iron ore mine tailing high efficiente callback again |
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