CN102259058A - New process of closing in three sections and preselecting and crushing in two sections - Google Patents

New process of closing in three sections and preselecting and crushing in two sections Download PDF

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Publication number
CN102259058A
CN102259058A CN2010102616700A CN201010261670A CN102259058A CN 102259058 A CN102259058 A CN 102259058A CN 2010102616700 A CN2010102616700 A CN 2010102616700A CN 201010261670 A CN201010261670 A CN 201010261670A CN 102259058 A CN102259058 A CN 102259058A
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China
Prior art keywords
enters
sections
crusher
magnetic
vibratory
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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.)
Pending
Application number
CN2010102616700A
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Chinese (zh)
Inventor
戴兴宇
屈平
于克旭
张卓
周征
张树军
许洪钢
宋宝莹
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Angang Group Mining Co Ltd
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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 CN2010102616700A priority Critical patent/CN102259058A/en
Publication of CN102259058A publication Critical patent/CN102259058A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a new process of closing in three sections and preselecting and crushing in two sections. The process provided by the invention comprises the following steps: raw ore is delivered to a rough crusher to be crushed; the discharged material of the rough crusher enters a primary-section vibrating screen to be classified; the product above the screen enters a primary-section magnetic pulley; the concentrate sorted by the primary-section magnetic pulley enters an intermediate crusher to be crushed; the sorted waste rock enters a waste rock cabin; the product of the intermediate crusher and the product below the primary-section vibrating screen enter a secondary-section vibrating screen; the product above the secondary-section vibrating screen enters a secondary-section magnetic pulley; the waste rock sorted by the secondary-section magnetic pulley enters the waste rock cabin; the concentrate sorted by the secondary-section magnetic pulley enters a fine crusher to be crushed; the product crushed by the fine crusher and the product crushed by the intermediate crusher enter the secondary-section vibrating screen to be classified; the product below the secondary-section vibrating screen enters a dry magnetic separator; and the concentrate of the dry magnetic separator, serving as a final product, is delivered to be ground, and the waste rock sorted by the dry magnetic separator enters the waste rock cabin. In the new process provided by the invention, the waste rock is eliminated to the maximum limit before grinding; the grinding quantity is reduced; and the purposes of saving energy and reducing consumption are achieved.

Description

Three section one broken new technology of closed circuit two sections preliminary elections
Technical field
The present invention relates to ore dressing preliminary election crushing technology field, the particularly a kind of three section one broken new technology of closed circuit two sections preliminary elections.
Background technology
In recent years, along with the mine to deep mining, the orebody mining condition runs down, rock intercalation increases, ore output grade descends.Owing to sneak into a large amount of rocks in the ore, through broken, sort, operation such as the last person caused the dressing expenses increase, and rock easy argillization in grinding process, the raising of restriction iron concentrate grade.If give up grade low, mix the big ore of rock, will cause that the rate of extraction is low, stripping-to-ore ratio big, cost up, the wasting of resources, and can not satisfy the demand of ore dressing plant, so also will be used poor value to ore amount for the ore deposit ability." consumption reduction " is key in the process of utilizing, and the energy consumption of ore grinding accounts for more than 80% of whole broken mill operation, and therefore " many broken few mills " technology is one of focus of domestic and international ore dressing industry concern always.In order before ore grinding, to reject abandoned mine, improve and go into to grind grade, realize the energy-saving and cost-reducing of ore dressing plant, reduce beneficiation cost, adopt dry type magnetic pulley preliminary election technology that magnetic iron ore is realized throwing in advance tail, this technology be in crushing operation thick broken or in broken back add the dry type magnetic pulley, realizes two sections or three section one technological process that closed circuit coarse grain one is thrown tail or two throwing tails.
The shortcoming of dry type magnetic pulley is can't sorting for the particulate that is mixed in the coarse grain.This kind crushing process still can't satisfy the selected grade of ore grinding for the lower magnetic ore deposit of head grade.Cause that qualified gangue enters ore grinding in the ore after the fragmentation, increase dressing expenses and use.
Summary of the invention
The purpose of this invention is to provide the broken new technology of a kind of three section one closed circuit two sections preliminary election, before ore grinding, reject abandoned mine to greatest extent, improve and go into to grind grade, realize the energy-saving and cost-reducing of ore dressing plant, reduce beneficiation cost.
The objective of the invention is to realize by following technical proposals:
The broken new technology of a kind of three section one closed circuit two sections preliminary election of the present invention is characterized in that comprising the steps:
1) raw ore of mohs hardness more than 7 sent into the coarse crushing machine and carry out coarse crushing, coarse crushing machine discharge enters one section vibratory sieve classification,
2) after one section vibratory sieve classification, oversize enters one section magnetic pulley,
3) concentrate that sub-elects of one section magnetic pulley enters middle crusher in crushing, and the barren rock that sub-elects enters refuse bin,
4) product of disintegrating machine enters two sections vibratory sieves with the undersize of one section vibratory sieve in,
5) oversize of two sections vibratory sieves enters two sections magnetic pulleys,
6) barren rock that sub-elects of two sections magnetic pulleys enters refuse bin, and the concentrate that two sections magnetic pulleys sub-elect enters the fine crushing crusher machine, and the product of fine crushing crusher machine and the product of middle disintegrating machine merge and enter two sections vibratory sieve classifications,
7) undersize of two sections vibratory sieves enters dry-type magnetic extractor,
8) concentrate of dry-type magnetic extractor is that final products are sent into the mill choosing, and its barren rock that sub-elects enters refuse bin.
The sieve diameter of described one section vibratory sieve is 50mm, and the sieve diameter of described two sections vibratory sieves is 10mm.
The characteristics of the three section one of the present invention broken new technology of closed circuit two sections preliminary elections are: use " many broken few mills " technology, at the harder characteristics of its ore, adopt three section one closed circuit, two sections preliminary election flow processs, in order before ore grinding, to reject abandoned mine to greatest extent, improve the grade of going into ore grinding, reduce and go into the mill amount, introduce dry-type magnetic extractor, to the ore deposit through after sieve aperture is the sieve classification of 50mm, coarse grain adopts the magnetic pulley sorting, and particulate enters two sections vibratory sieve classifications, adopts the dry-type magnetic extractor sorting after two sections vibratory sieve classifications, bring into play the performance of equipment preferably, reach energy-saving and cost-reducing, reduce the purpose of beneficiation cost.
The present invention adopts the preliminary election operation that adds magnetic pulley and dry-type magnetic extractor, has reduced and has gone into the mill amount, has improved the selected grade of ore, is effective ways that reduce production costs, save energy and reduce the cost.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Embodiment illustrates the specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, the broken new technology of a kind of three section one closed circuit two sections preliminary election of the present invention is characterized in that comprising the steps:
1) raw ore of mohs hardness more than 7 sent into the coarse crushing machine and carry out coarse crushing, coarse crushing machine discharge enters one section vibratory sieve classification,
2) after one section vibratory sieve classification, oversize enters one section magnetic pulley,
3) concentrate that sub-elects of one section magnetic pulley enters middle crusher in crushing, and the barren rock that sub-elects enters refuse bin,
4) product of disintegrating machine enters two sections vibratory sieves with the undersize of one section vibratory sieve in,
5) oversize of two sections vibratory sieves enters two sections magnetic pulleys,
6) barren rock that sub-elects of two sections magnetic pulleys enters refuse bin, and the concentrate that two sections magnetic pulleys sub-elect enters the fine crushing crusher machine, and the product of fine crushing crusher machine and the product of middle disintegrating machine merge and enter two sections vibratory sieve classifications,
7) undersize of two sections vibratory sieves enters dry-type magnetic extractor,
8) concentrate of dry-type magnetic extractor is that final products are sent into the mill choosing, and its barren rock that sub-elects enters refuse bin.
The sieve diameter of described one section vibratory sieve is 50mm, and the sieve diameter of described two sections vibratory sieves is 10mm.
Adopt the broken new technology of three section one of the present invention closed circuit two sections preliminary election, before ore grinding, reject abandoned mine to greatest extent, improve the grade of going into ore grinding, reduce and go into the mill amount, the purpose that reach energy-saving and cost-reducing, reduces beneficiation cost.

Claims (2)

1. the one kind three sections one broken new technologies of closed circuit two sections preliminary elections is characterized in that comprising the steps:
1) raw ore of mohs hardness more than 7 sent into the coarse crushing machine and carry out coarse crushing, coarse crushing machine discharge enters one section vibratory sieve classification,
2) after one section vibratory sieve classification, oversize enters one section magnetic pulley,
3) concentrate that sub-elects of one section magnetic pulley enters middle crusher in crushing, and the barren rock that sub-elects enters refuse bin,
4) product of disintegrating machine enters two sections vibratory sieves with the undersize of one section vibratory sieve in,
5) oversize of two sections vibratory sieves enters two sections magnetic pulleys,
6) barren rock that sub-elects of two sections magnetic pulleys enters refuse bin, and the concentrate that two sections magnetic pulleys sub-elect enters the fine crushing crusher machine, and the product of fine crushing crusher machine and the product of middle disintegrating machine merge and enter two sections vibratory sieve classifications,
7) undersize of two sections vibratory sieves enters dry-type magnetic extractor,
8) concentrate of dry-type magnetic extractor is that final products are sent into the mill choosing, and its barren rock that sub-elects enters refuse bin.
2. the three section one according to claim 1 broken new technology of closed circuit two sections preliminary elections, the sieve diameter that it is characterized in that described one section vibratory sieve is 50mm, the sieve diameter of described two sections vibratory sieves is 10mm.
CN2010102616700A 2010-08-25 2010-08-25 New process of closing in three sections and preselecting and crushing in two sections Pending CN102259058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010102616700A CN102259058A (en) 2010-08-25 2010-08-25 New process of closing in three sections and preselecting and crushing in two sections

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010102616700A CN102259058A (en) 2010-08-25 2010-08-25 New process of closing in three sections and preselecting and crushing in two sections

Publications (1)

Publication Number Publication Date
CN102259058A true CN102259058A (en) 2011-11-30

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103977882A (en) * 2014-05-23 2014-08-13 山东华联矿业股份有限公司 Magnetite concentrate quality-improving impurity-reducing process
CN104475232A (en) * 2014-11-14 2015-04-01 南京梅山冶金发展有限公司 Iron ore tailing discarding pre-concentration technology
CN105498949A (en) * 2016-01-05 2016-04-20 马钢(集团)控股有限公司 Lean magnetite mining-dressing integrated pre-concentrating process and device
CN106733669A (en) * 2017-01-16 2017-05-31 贵州开磷集团股份有限公司 A kind of dry ore in sand form processing technology and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201291149Y (en) * 2008-10-31 2009-08-19 鞍钢集团矿业公司 Two-stage double closed circuit crushing screening facilites
CN101590441A (en) * 2008-05-26 2009-12-02 鞍钢集团矿业公司 Magnetite dry-separation tailing-discarding pre-separation technology
CN101704012A (en) * 2009-07-17 2010-05-12 惠州市鼎晨实业发展有限公司 Method for recovering and separating PCB by dry method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101590441A (en) * 2008-05-26 2009-12-02 鞍钢集团矿业公司 Magnetite dry-separation tailing-discarding pre-separation technology
CN201291149Y (en) * 2008-10-31 2009-08-19 鞍钢集团矿业公司 Two-stage double closed circuit crushing screening facilites
CN101704012A (en) * 2009-07-17 2010-05-12 惠州市鼎晨实业发展有限公司 Method for recovering and separating PCB by dry method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103977882A (en) * 2014-05-23 2014-08-13 山东华联矿业股份有限公司 Magnetite concentrate quality-improving impurity-reducing process
CN104475232A (en) * 2014-11-14 2015-04-01 南京梅山冶金发展有限公司 Iron ore tailing discarding pre-concentration technology
CN105498949A (en) * 2016-01-05 2016-04-20 马钢(集团)控股有限公司 Lean magnetite mining-dressing integrated pre-concentrating process and device
CN106733669A (en) * 2017-01-16 2017-05-31 贵州开磷集团股份有限公司 A kind of dry ore in sand form processing technology and device
CN106733669B (en) * 2017-01-16 2019-04-19 贵州开磷有限责任公司 A kind of dry mine sand processing technology and device

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Application publication date: 20111130