CN104368435A - Method for acquiring finished product iron from iron ore - Google Patents
Method for acquiring finished product iron from iron ore Download PDFInfo
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- CN104368435A CN104368435A CN201410610847.1A CN201410610847A CN104368435A CN 104368435 A CN104368435 A CN 104368435A CN 201410610847 A CN201410610847 A CN 201410610847A CN 104368435 A CN104368435 A CN 104368435A
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Abstract
The invention discloses a method for acquiring finished product iron from iron ore. The method comprises the following steps: an impurity removal procedure, a dust falling procedure, an iron core granularity rough concentration procedure, a feeding procedure, a conveyor belt conveying procedure, a finished product iron magnetic separation procedure and an iron content detection procedure are arranged sequentially in a matching manner; the iron core with the granularity of 50mm below is conveyed into feeding procedure through the iron core granularity rough concentration procedure; before the iron core enters the finished product iron magnetic separation procedure, the iron core is evenly and flatly rolled through a heavy type pressure roll; impurities and dust in the iron core raw materials can be removed through the impurity removal procedure and the dust falling procedure, so that the selection efficiency and the quality when the granularity of the iron core is within a preset threshold in the iron core granularity rough floatation procedure are improved, wherein the finished product iron magnetic separation procedure concretely comprises a front magnetic separation procedure, a rear magnetic separation procedure, and a last magnetic concentration procedure. According to the method for acquiring finished product iron from iron ore, the advantages of low resource consumption, high working efficiency and good product quality can be realized.
Description
Technical field
The present invention relates to field of mechanical technique, particularly, relate to a kind of method obtaining finished iron from iron ore.
Background technology
According to physics, the chemical property of different minerals in ore, after ore reduction is levigate, adopt gravity separation method, floatation, magnetic method, electrical concentration etc., valuable mineral and gangue mineral are separated, and the valuable mineral of various symbiosis (association) is separated from each other as far as possible, removing or reduction objectionable impurities, to obtain the process of smelting or other industrial needed raw materials.Ore dressing can make the useful constituent enrichment in mineral, reduces the consumption of fuel, transport in smelting or other process, makes low-grade ore obtain economic utilization.Beneficiation test the data obtained is the Main Basis of the evaluation of deposits and design of founding the factory.
Ore dressing is most important link in whole mineral products production process, is the key sector in the enterprise of ore deposit.General large ore enterprise be all comprehensively adopt, select, the resource-based enterprises of smelting.With physics or chemical method by the valuable mineral in raw mineral materials and useless mineral (usually claiming gangue) or toxic mineral separately, or the technical process that multiple valuable mineral is separated just is called ore dressing, also known as " mineral processing ".In product, the title concentrate of useful component enrichment; The title mine tailing of unwanted contributions enrichment; The content of useful component, between concentrate and tailings, needs the title chats of process further.Metalliferous mineral concentrate extracts the raw material of metal mainly as smelting industry; Nonmetallic mineral concentrate is as the raw material of other industry; The selected product of coal is cleaned coal.Ore dressing can significantly improve the quality of raw mineral materials, reduces freight, alleviates the difficulty of process further, reduces processing cost, and can realize the comprehensive utilization of raw mineral materials.Because world fossil resource is day by day poor, utilize lean ore and complicated ore more and more, therefore need the ore amount of ore dressing process increasing.Except minority high-grade ore, metal and nonmetal (comprising <Aa coal) ore nearly all need ore dressing.
The technology of current iron ore dry-dressing machine is immature, carries out the complex process of ore dressing with iron ore dry-dressing machine, and Iron concentrate taste is lower.
Realizing in process of the present invention, inventor finding at least to exist in prior art that consumes resources amount is large, the defect such as inefficiency and poor product quality.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of method obtaining finished iron from iron ore, to realize, consumes resources amount is little, operating efficiency is high and the advantage of good product quality.
For achieving the above object, the technical solution used in the present invention is: a kind of method obtaining finished iron from iron ore, comprises the removal of impurities operation, depositing dust operation, the iron ore granularity that are equipped with successively and roughly selects operation, feed process, tape transport operation, finished iron magnetic separation operation and iron-holder and detect operation; Roughly select operation by iron ore granularity, granularity is sent into feed process at the iron ore of below 50mm; Before iron ore enters finished iron magnetic separation operation, heavy pressure roller need be adopted to be flattened by iron ore even roller; By removal of impurities operation and depositing dust operation, by the foreign material in iron ore material and dust removing, iron ore granularity is roughly selected when operation chooses the iron ore of granularity in predetermined threshold value and chooses efficiency and Quality advance; Wherein, finished iron magnetic separation operation specifically comprises front road magnetic separation operation, rear road magnetic separation operation and the selected operation of extreme trace magnetic.
Further, described front road magnetic separation operation, specifically comprise: come by duct device before magnetic separation, magnetic strips and idler pulley is provided with in duct device before magnetic separation, the iron ore carried after duct device before making to enter magnetic separation is divided into three layers after the magnetic separation of front road, upper strata is waste material, and intermediate layer is semi-finished product, and lower floor is Iron concentrate;
And/or,
Described rear road magnetic separation operation, specifically comprises: realized by duct device after magnetic separation and race tail adjusting device and grade adjusting device, be provided with magnetic and roll after magnetic separation in duct device, run in tail adjusting device and be provided with adjustment plate; Waste material layer is thrown out of under effect of inertia, and crosses adjustment plate and fall in waste material bucket; Simultaneously, semi-finished product layer is made to be divided into two parts: Part I semi-finished product are thrown out of under effect of inertia, these some of them throwing away part first bump against after on adjustment plate to be fallen in semi-finished product bucket again, wherein other are directly fallen in semi-finished product bucket under gravity, and Part II semi-finished product enter after being scraped by scraper plate in semi-finished product bucket;
And/or,
The selected operation of described extreme trace magnetic, is specifically comprised: realized by grade adjusting device, in grade adjusting device, is provided with scraper plate; The passage entered for Iron concentrate is formed between scraper plate and conveyer belt; Finally surplus Iron concentrate layer on the conveyor belt then with conveyer belt through the passage scraper plate and conveyer belt, then enter in Iron concentrate discharge bucket, the Iron concentrate finally obtained is satisfactory Iron concentrate.
Further, the magnetic after described magnetic separation in duct device rolls the magnetic field that can produce 6200-10000 Gauss, described scraper plate forward position to the distance at conveyer belt working face between 3-20mm.
Further, enter described iron ore granularity and roughly select the particle diameter of the iron ore of operation at below 23mm, the iron-holder of described Iron concentrate is more than 62%.
A kind of method obtaining finished iron from iron ore of various embodiments of the present invention, roughly selects operation, feed process, tape transport operation, finished iron magnetic separation operation and iron-holder detect operation owing to comprising the removal of impurities operation, depositing dust operation, the iron ore granularity that are equipped with successively; Roughly select operation by iron ore granularity, granularity is sent into feed process at the iron ore of below 50mm; Before iron ore enters finished iron magnetic separation operation, heavy pressure roller need be adopted to be flattened by iron ore even roller; By removal of impurities operation and depositing dust operation, by the foreign material in iron ore material and dust removing, iron ore granularity is roughly selected when operation chooses the iron ore of granularity in predetermined threshold value and chooses efficiency and Quality advance; Wherein, finished iron magnetic separation operation specifically comprises front road magnetic separation operation, rear road magnetic separation operation and the selected operation of extreme trace magnetic; Thus can overcome that consumes resources amount in prior art is large, the defect of inefficiency and poor product quality, to realize, consumes resources amount is little, operating efficiency is high and the advantage of good product quality.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from description, or understand by implementing the present invention.
Below by embodiment, technical scheme of the present invention is described in further detail.
Detailed description of the invention
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
According to the embodiment of the present invention, provide a kind of method obtaining finished iron from iron ore, comprise the removal of impurities operation, depositing dust operation, the iron ore granularity that are equipped with successively and roughly select operation, feed process, tape transport operation, finished iron magnetic separation operation and iron-holder and detect operation; Roughly select operation by iron ore granularity, granularity is sent into feed process at the iron ore of below 50mm; Before iron ore enters finished iron magnetic separation operation, heavy pressure roller need be adopted to be flattened by iron ore even roller; By removal of impurities operation and depositing dust operation, by the foreign material in iron ore material and dust removing, iron ore granularity is roughly selected when operation chooses the iron ore of granularity in predetermined threshold value and chooses efficiency and Quality advance; Wherein, finished iron magnetic separation operation specifically comprises front road magnetic separation operation, rear road magnetic separation operation and the selected operation of extreme trace magnetic.
Wherein, above-mentioned front road magnetic separation operation, specifically comprise: come by duct device before magnetic separation, magnetic strips and idler pulley is provided with in duct device before magnetic separation, the iron ore carried after duct device before making to enter magnetic separation is divided into three layers after the magnetic separation of front road, upper strata is waste material, and intermediate layer is semi-finished product, and lower floor is Iron concentrate; And/or rear road magnetic separation operation, specifically comprises: realized by duct device after magnetic separation and race tail adjusting device and grade adjusting device, be provided with magnetic in duct device and roll after magnetic separation, run in tail adjusting device and be provided with adjustment plate; Waste material layer is thrown out of under effect of inertia, and crosses adjustment plate and fall in waste material bucket; Simultaneously, semi-finished product layer is made to be divided into two parts: Part I semi-finished product are thrown out of under effect of inertia, these some of them throwing away part first bump against after on adjustment plate to be fallen in semi-finished product bucket again, wherein other are directly fallen in semi-finished product bucket under gravity, and Part II semi-finished product enter after being scraped by scraper plate in semi-finished product bucket; And/or the selected operation of extreme trace magnetic, specifically comprises: realized by grade adjusting device, is provided with scraper plate in grade adjusting device; The passage entered for Iron concentrate is formed between scraper plate and conveyer belt; Finally surplus Iron concentrate layer on the conveyor belt then with conveyer belt through the passage scraper plate and conveyer belt, then enter in Iron concentrate discharge bucket, the Iron concentrate finally obtained is satisfactory Iron concentrate.
In the above-described embodiments, the magnetic after magnetic separation in duct device rolls the magnetic field that can produce 6200-10000 Gauss, scraper plate forward position to the distance at conveyer belt working face between 3-20mm.Enter iron ore granularity and roughly select the particle diameter of the iron ore of operation at below 23mm, the iron-holder of Iron concentrate is more than 62%.
Technical scheme of the present invention, iron ore is divided into three layers after front road magnetic separation operation: upper strata is waste material, and intermediate layer is semi-finished product, and lower floor is Iron concentrate; In rear road magnetic separation operation, waste material layer is thrown in waste material bucket under effect of inertia; In semi-finished product layer, some is thrown in semi-finished product bucket under effect of inertia, and another part is scraped by grade adjusting device and enters in semi-finished product bucket; Iron concentrate layer enters in Iron concentrate discharge bucket, and the iron-holder of this Iron concentrate is more than 62%.The operating process of the method is simple, and resource utilization is high.
Compared with prior art, technical scheme of the present invention, after before the magnetic separation of dry-dressing machine, duct device realizes the magnetic separation of front road, broken rear particle diameter is made to enter dry-dressing machine at the iron ore of below 23mm, under the magnetic fields of iron ore duct device before magnetic separation, obtain different according to each particle iron-holder and carry out layering, the Iron concentrate that iron-holder is high is positioned at lower floor, almost nonferrous waste material is positioned at upper strata, and is semi-finished product between Iron concentrate and waste material.The object of front road magnetic separation is by Iron concentrate layering, is convenient to select high-grade Iron concentrate in the magnetic separation of rear road.Through road magnetic separation later, finally high-grade Iron concentrate can be selected.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. one kind obtains the method for finished iron from iron ore, it is characterized in that, comprise the removal of impurities operation, depositing dust operation, the iron ore granularity that are equipped with successively and roughly select operation, feed process, tape transport operation, finished iron magnetic separation operation and iron-holder and detect operation; Roughly select operation by iron ore granularity, granularity is sent into feed process at the iron ore of below 50mm; Before iron ore enters finished iron magnetic separation operation, heavy pressure roller need be adopted to be flattened by iron ore even roller; By removal of impurities operation and depositing dust operation, by the foreign material in iron ore material and dust removing, iron ore granularity is roughly selected when operation chooses the iron ore of granularity in predetermined threshold value and chooses efficiency and Quality advance; Wherein, finished iron magnetic separation operation specifically comprises front road magnetic separation operation, rear road magnetic separation operation and the selected operation of extreme trace magnetic.
2. a kind of method obtaining finished iron from iron ore according to claim 1, it is characterized in that, described front road magnetic separation operation, specifically comprise: come by duct device before magnetic separation, be provided with magnetic strips and idler pulley in duct device before magnetic separation, the iron ore carried after duct device before making to enter magnetic separation is divided into three layers after the magnetic separation of front road, and upper strata is waste material, intermediate layer is semi-finished product, and lower floor is Iron concentrate;
And/or,
Described rear road magnetic separation operation, specifically comprises: realized by duct device after magnetic separation and race tail adjusting device and grade adjusting device, be provided with magnetic and roll after magnetic separation in duct device, run in tail adjusting device and be provided with adjustment plate; Waste material layer is thrown out of under effect of inertia, and crosses adjustment plate and fall in waste material bucket; Simultaneously, semi-finished product layer is made to be divided into two parts: Part I semi-finished product are thrown out of under effect of inertia, these some of them throwing away part first bump against after on adjustment plate to be fallen in semi-finished product bucket again, wherein other are directly fallen in semi-finished product bucket under gravity, and Part II semi-finished product enter after being scraped by scraper plate in semi-finished product bucket;
And/or,
The selected operation of described extreme trace magnetic, is specifically comprised: realized by grade adjusting device, in grade adjusting device, is provided with scraper plate; The passage entered for Iron concentrate is formed between scraper plate and conveyer belt; Finally surplus Iron concentrate layer on the conveyor belt then with conveyer belt through the passage scraper plate and conveyer belt, then enter in Iron concentrate discharge bucket, the Iron concentrate finally obtained is satisfactory Iron concentrate.
3. a kind of method obtaining finished iron from iron ore according to claim 2, it is characterized in that, magnetic after described magnetic separation in duct device rolls the magnetic field that can produce 6200-10000 Gauss, described scraper plate forward position to the distance at conveyer belt working face between 3-20mm.
4. a kind of method obtaining finished iron from iron ore according to claim 1 and 2, is characterized in that, enter described iron ore granularity and roughly select the particle diameter of the iron ore of operation at below 23mm, the iron-holder of described Iron concentrate is more than 62%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410610847.1A CN104368435A (en) | 2014-11-04 | 2014-11-04 | Method for acquiring finished product iron from iron ore |
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| CN201410610847.1A CN104368435A (en) | 2014-11-04 | 2014-11-04 | Method for acquiring finished product iron from iron ore |
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| CN104368435A true CN104368435A (en) | 2015-02-25 |
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Citations (7)
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| CN1623668A (en) * | 2004-12-14 | 2005-06-08 | 李兴斌 | Combined mineral separation technology process for producing iron refine ore powder containing magnetic iron ore |
| CN101343693A (en) * | 2007-07-12 | 2009-01-14 | 南京板桥钢渣有限责任公司 | Dust-separation zinc extraction method |
| CN101385992A (en) * | 2008-10-20 | 2009-03-18 | 海盐机械厂 | Dry dressing method for separating iron from iron ore |
| CN101385993A (en) * | 2008-10-20 | 2009-03-18 | 海盐机械厂 | Separation method of finished iron from iron ore dry-dressing machine |
| CN201300090Y (en) * | 2008-10-20 | 2009-09-02 | 海盐机械厂 | Magnetic separation back track device used in iron ore dry separation machine |
| CN102172556A (en) * | 2010-12-07 | 2011-09-07 | 东北大学 | High-pressure roller milling-preselection processing method for vanadic titanomagnetite |
| CN103041921A (en) * | 2012-12-20 | 2013-04-17 | 山东科力华电磁设备有限公司 | Method for extracting iron ore concentrate under anhydrous condition |
-
2014
- 2014-11-04 CN CN201410610847.1A patent/CN104368435A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1623668A (en) * | 2004-12-14 | 2005-06-08 | 李兴斌 | Combined mineral separation technology process for producing iron refine ore powder containing magnetic iron ore |
| CN101343693A (en) * | 2007-07-12 | 2009-01-14 | 南京板桥钢渣有限责任公司 | Dust-separation zinc extraction method |
| CN101385992A (en) * | 2008-10-20 | 2009-03-18 | 海盐机械厂 | Dry dressing method for separating iron from iron ore |
| CN101385993A (en) * | 2008-10-20 | 2009-03-18 | 海盐机械厂 | Separation method of finished iron from iron ore dry-dressing machine |
| CN201300090Y (en) * | 2008-10-20 | 2009-09-02 | 海盐机械厂 | Magnetic separation back track device used in iron ore dry separation machine |
| CN102172556A (en) * | 2010-12-07 | 2011-09-07 | 东北大学 | High-pressure roller milling-preselection processing method for vanadic titanomagnetite |
| CN103041921A (en) * | 2012-12-20 | 2013-04-17 | 山东科力华电磁设备有限公司 | Method for extracting iron ore concentrate under anhydrous condition |
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