CN102230071A - Novel technology of low-grade magnetite two-stage pre-selecting and crushing - Google Patents
Novel technology of low-grade magnetite two-stage pre-selecting and crushing Download PDFInfo
- Publication number
- CN102230071A CN102230071A CN 201010187612 CN201010187612A CN102230071A CN 102230071 A CN102230071 A CN 102230071A CN 201010187612 CN201010187612 CN 201010187612 CN 201010187612 A CN201010187612 A CN 201010187612A CN 102230071 A CN102230071 A CN 102230071A
- Authority
- CN
- China
- Prior art keywords
- ore
- crusher
- dry
- sections
- 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.)
- Granted
Links
Images
Abstract
The invention belongs to the technical field of ore selecting in metallurgical mining industries, and especially relates to a novel technology of low-grade magnetite two-stage pre-selecting and crushing. According to the invention, magnetite is delivered to a first-stage rough crusher, and is crushed in a crushing chamber of the rough crusher; the materials discharged from the rough crusher are delivered to a dry magnetic pulley by a belt conveyor, such that concentrate products and waste rocks are separated; concentrate products are delivered through a middle crushing ore bin to a second-stage middle crusher by a belt conveyor; the products obtained from the middle crusher are delivered to a sieving machine by the belt conveyor, and are divided into two types of products, which are on-sieve products and under-sieve products; the on-sieve products are crushed by a third-stage fine crusher, and are mixed with products from the middle crusher; the mixture is delivered to the sieving machine; the under-sieve products are delivered into a second-stage fine ore dry magnetic separator by a belt conveyor; concentrate products from the second-stage fine ore dry magnetic separator is regarded as finished crushing products; tailings from the fine ore dry magnetic separator are delivered into a waste rock chamber. According to the present invention, a dry-separating magnetic pulley is adopted after rough crushing, and a dry magnetic separator is adopted after fine crushing. Tailing discarding in advance assists in improving the grade of crushing materials, and in reducing the amounts of the crushing materials. Therefore, energy is saved, consumption is reduced, and the economic benefit of a concentrating plant is improved.
Description
Technical field
The invention belongs to the technique of preparing field in the metallurgical mining industry, particularly relate to the broken novel process of two sections preliminary elections 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, 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, mix the big ore of rock and give up, will cause that the rate of extraction is low, stripping ratio big, cost up, the wasting of resources, and can not satisfy the demand of dressing-works ore amount for the ore deposit ability.Therefore in order before ore grinding, to reject abandoned mine, improve and go into to grind grade, realize the energy-saving and cost-reducing of dressing-works, reduce beneficiation cost, adopt dry type magnetic pulley preliminary election technology that magnetite 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 three section one closed circuit one technical process of throwing tail or two throwing tails.
The granularity of crushed product is 12～0mm.The shortcoming of this kind crushing process is the ore after in small, broken bits and can not adopts great wheel formula magnetic pulley owing to be subjected to the influence of equipment itself, technology, product granularity etc., causes the thin qualified gangue of an ore part after broken to enter ore grinding, increases dressing expenses usefulness.
Summary of the invention
The purpose of this invention is to provide the broken novel process of two sections preliminary elections of a kind of low-grade magnetite and before ore grinding, reject abandoned mine, improve and go into to grind grade, realize the energy-saving and cost-reducing of dressing-works, reduce beneficiation cost.
The objective of the invention is to realize by following technical proposals:
The broken novel process of two sections preliminary elections of low-grade magnetite of the present invention is characterized in that comprising following processing step:
1) iron ore that ships of stope 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 the dry separation magnetic pulley through the ore of one section primary crusher fragmentation,
4) mine tailing selected of dry separation magnetic pulley is sent to behind the refuse bin with the automobile outward transport,
5) send into two sections secondary crushers behind the broken ore storage bin during the concentrate selected of dry separation magnetic pulley is sent into,
6) ore through two sections secondary crusher fragmentations is sent to dummy car by conveyor, and dummy car sends into vibratory screening apparatus for the ore deposit conveyor after this ore is sent to the vibratory screening apparatus ore storage bin,
7) the vibratory screening apparatus oversize is sent into three sections fine crushers after sending into the fine crushing ore storage bin, and the product after three sections fine crusher fragmentations turns back to vibratory screening apparatus,
8) the vibratory screening apparatus screen undersize is sent into the fine ore dry-type magnetic extractor.
9) mine tailing selected of fine ore dry-type magnetic extractor is sent into behind the refuse bin with the automobile outward transport,
10) concentrate selected of fine ore dry-type magnetic extractor is sent into power house.
Described one section primary crusher is the PE900X1200 jaw crusher.
Described dry separation magnetic pulley is a 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 fine ore dry-type magnetic extractor is a CTL1030 fine ore dry-type magnetic extractor.
The broken novel process of two sections preliminary elections of low-grade magnetite of the present invention is the broken novel process of a kind of three section one closed circuit two sections tailings discarding by preconcentration, magnetite is sent into one section coarse breaking machine, ore carries out fragmentation in crusher chamber, coarse breaking machine discharge advances one section dry type magnetic pulley through conveyor drive, sub-elect one section concentrate product and barren rock, one section concentrate product advances broken machine in two sections by broken machine ore storage bin in the conveyor drive warp, middle crusher product advances sieve apparatus through conveyor drive, be divided into sieve through sieve apparatus and go up and sieve following two products, oversize behind three sections thin broken crusher machines with in product behind the broken crusher machine merge laggard sieve apparatus, screen undersize feeds two sections dry-type magnetic extractors through conveyor, the concentrate of two sections dry-type magnetic extractors is as the finished product of fragmentation, and the mine tailing of magnetic separator advances refuse bin.
The present invention establishes the dry type magnetic separation machine operation after establishing the operation of dry separation magnetic pulley, thin breaking after thick the breaking, throw tail in advance and can improve into the mill grade, reduce and go into the mill amount, reaches energy-saving and cost-reducing, improves the purpose of selecting factory's economic benefit.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with embodiment.
The broken novel process of two sections preliminary elections of low-grade magnetite of the present invention is characterized in that comprising following processing step:
1) iron ore that ships of stope 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 single stage crushing machine 1 through the bar screen feeder, described one section primary crusher is the PE900X1200 jaw crusher;
3) send into dry separation magnetic pulley 2 through the ore of one section primary crusher fragmentation, described dry separation magnetic pulley is a dry separation CTDG1212 magnetic pulley;
4) mine tailing selected of dry separation magnetic pulley is sent to behind the refuse bin with the automobile outward transport,
5) send into two sections secondary crushers 3 behind the broken ore storage bin during the concentrate selected of dry separation magnetic pulley is sent into, its two sections secondary crushers 3 adopt HP400 cone crushers;
6) ore through two sections secondary crusher fragmentations is sent to dummy car by conveyor, and dummy car sends into 2YA2460 vibratory screening apparatus 4 for the ore deposit conveyor after this ore is sent to the vibratory screening apparatus ore storage bin, and described vibratory screening apparatus 4 is the 2YA2460 vibratory screening apparatus;
7) vibratory screening apparatus 4 oversizes are sent into three sections fine crushers 5 after sending into the fine crushing ore storage bin, and its three sections fine crushers 5 also adopt the HP400 cone crusher, and the product after three sections fine crusher fragmentations turns back to vibratory screening apparatus,
8) vibratory screening apparatus 4 screen undersizes are sent into fine ore dry-type magnetic extractor 6, and described fine ore dry-type magnetic extractor 6 is a CTL1030 fine ore dry-type magnetic extractor;
9) mine tailing selected of fine ore dry-type magnetic extractor 6 is sent into behind the refuse bin with the automobile outward transport,
10) concentrate selected of fine ore dry-type magnetic extractor 6 is sent into power house.
The present invention establishes the dry type magnetic separation machine operation after establishing the operation of dry separation magnetic pulley, thin breaking after thick the breaking, throw tail in advance and can improve into the mill grade, reduce and go into the mill amount, reaches energy-saving and cost-reducing, improves the purpose of selecting factory's economic benefit.
Claims (6)
1. the broken novel process of two sections preliminary elections of a low-grade magnetite is characterized in that comprising following processing step:
1) iron ore that ships of stope 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 the dry separation magnetic pulley through the ore of one section primary crusher fragmentation,
4) mine tailing selected of dry separation magnetic pulley is sent to behind the refuse bin with the automobile outward transport,
5) send into two sections secondary crushers behind the broken ore storage bin during the concentrate selected of dry separation magnetic pulley is sent into,
6) ore through two sections secondary crusher fragmentations is sent to dummy car by conveyor, and dummy car sends into vibratory screening apparatus for the ore deposit conveyor after this ore is sent to the vibratory screening apparatus ore storage bin,
7) oversize of vibratory screening apparatus is sent into three sections fine crushers after sending into the fine crushing ore storage bin, and the product after three sections fine crusher fragmentations turns back to vibratory screening apparatus,
8) screen undersize of vibratory screening apparatus is sent into the fine ore dry-type magnetic extractor,
9) mine tailing selected of fine ore dry-type magnetic extractor is sent into behind the refuse bin with the automobile outward transport,
10) concentrate selected of fine ore dry-type magnetic extractor is sent into power house.
2. the broken novel process of two sections preliminary elections of low-grade magnetite according to claim 1 is characterized in that described one section primary crusher is the PE900X1200 jaw crusher.
3. the broken novel process of two sections preliminary elections of low-grade magnetite according to claim 1 is characterized in that described dry separation magnetic pulley is a dry separation CTDG1212 magnetic pulley.
4. the broken novel process of two sections preliminary elections of low-grade magnetite according to claim 1 is characterized in that described two sections secondary crushers are the HP400 cone crusher.
5. the broken novel process of two sections preliminary elections of low-grade magnetite according to claim 1 is characterized in that described vibratory screening apparatus 4 is the 2YA2460 vibratory screening apparatus.
6. the broken novel process of two sections preliminary elections of low-grade magnetite according to claim 1 is characterized in that described fine ore dry-type magnetic extractor is a CTL1030 fine ore dry-type magnetic extractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010187612 CN102230071B (en) | 2010-06-01 | 2010-06-01 | Novel technology of low-grade magnetite two-stage pre-selecting and crushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010187612 CN102230071B (en) | 2010-06-01 | 2010-06-01 | Novel technology of low-grade magnetite two-stage pre-selecting and crushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102230071A true CN102230071A (en) | 2011-11-02 |
| CN102230071B CN102230071B (en) | 2013-03-20 |
Family
ID=44842675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010187612 Active CN102230071B (en) | 2010-06-01 | 2010-06-01 | Novel technology of low-grade magnetite two-stage pre-selecting and crushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102230071B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071663A (en) * | 2012-12-28 | 2013-05-01 | 河北联合大学 | Integral comprehensive utilization method for waste rocks of earth-disposing site of closed iron mine |
| CN105944824A (en) * | 2016-05-20 | 2016-09-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Dry pre-concentration process for weakly magnetic iron ore by size grading |
| CN111111892A (en) * | 2020-01-08 | 2020-05-08 | 山东省冶金设计院股份有限公司 | Mixing processing technology for magnetite crushing and preparation of sandstone aggregate from waste stone thereof |
| CN113426688A (en) * | 2021-06-25 | 2021-09-24 | 马钢集团设计研究院有限责任公司 | Mineral processing technology of high-sulfur composite iron ore and preselection production system thereof |
Citations (5)
| 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 |
-
2010
- 2010-06-01 CN CN 201010187612 patent/CN102230071B/en active Active
Patent Citations (5)
| 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)
| Title |
|---|
| 《包钢科技》 20091130 温贵等 白云鄂博主东矿选厂破碎工艺研究 第35卷, * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071663A (en) * | 2012-12-28 | 2013-05-01 | 河北联合大学 | Integral comprehensive utilization method for waste rocks of earth-disposing site of closed iron mine |
| CN103071663B (en) * | 2012-12-28 | 2015-04-08 | 河北联合大学 | Integral comprehensive utilization method for waste rocks of earth-disposing site of closed iron mine |
| CN105944824A (en) * | 2016-05-20 | 2016-09-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Dry pre-concentration process for weakly magnetic iron ore by size grading |
| CN105944824B (en) * | 2016-05-20 | 2018-08-31 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of weak-magnetic iron ore dry classification pre-selection technique |
| CN111111892A (en) * | 2020-01-08 | 2020-05-08 | 山东省冶金设计院股份有限公司 | Mixing processing technology for magnetite crushing and preparation of sandstone aggregate from waste stone thereof |
| CN113426688A (en) * | 2021-06-25 | 2021-09-24 | 马钢集团设计研究院有限责任公司 | Mineral processing technology of high-sulfur composite iron ore and preselection production system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102230071B (en) | 2013-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104874459B (en) | Useless ore-dressing technique is thrown in a kind of low-grade magnetite pre-selection | |
| CN102228865B (en) | Novel wet-type strong-magnetic pre-separation process of weak-magnetic low-grade iron mineral roller mill | |
| CN101590441B (en) | Magnetite dry-separation tailing-discarding pre-separation technology | |
| CN104888960B (en) | The magnetic of the red composite ore of fine grain teeth cloth magnetic floats sorting process | |
| 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 | |
| CN102230070B (en) | Novel three-stage pre-dressing and crushing process for low-grade magnetite | |
| CN109013037B (en) | Magnetite beneficiation process for improving coarse fraction tailing content and mill processing capacity | |
| CN1911523B (en) | Technological method capable of enhancing ore dressing efficiency and ore dressing index | |
| CN104888947B (en) | The magnetic separation of fine grain teeth cloth magnetic-red composite ore-centrifuge sorting process | |
| CN102240588A (en) | Dry-grinding and dry-separation method of magnetite | |
| CN101480632A (en) | Mineral separation process of magnetic iron ore | |
| CN204602376U (en) | A kind of ore treatment device | |
| CN101579654A (en) | Iron ore powder mineral dressing process | |
| CN102527504A (en) | Magnetic ore dressing method | |
| CN104815736B (en) | Preselecting process for surrounding rock containing magnetite | |
| CN105057072A (en) | Comprehensive recovery technology of multi-metal low-grade ore and ore-bearing waste rock resources thereof | |
| CN105983475A (en) | High-pressure roller mill crushing system for magnetite and mineral dressing method of high-pressure roller mill crushing system | |
| CN102814227A (en) | Floating selection method of nonferrous metal mineral powder | |
| CN104384020A (en) | Depth-induced crushing mineral separation technology of super-lean magnetic iron ore | |
| CN102189038A (en) | Preliminary separation process for ferromagnetic ore separation | |
| CN107029871A (en) | A kind of beneficiation method of magnetic composite ore | |
| CN102626669A (en) | System and method for comprehensive utilization of copper mine chats | |
| CN108262134A (en) | The broken six sections of pre-selections crushing process of three sections of low-grade magnetite | |
| CN102230071B (en) | Novel technology of low-grade magnetite two-stage pre-selecting and crushing |
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. |