CN104437843A - Method for obtaining finished product of iron from iron ores - Google Patents
Method for obtaining finished product of iron from iron ores Download PDFInfo
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- CN104437843A CN104437843A CN201410611112.0A CN201410611112A CN104437843A CN 104437843 A CN104437843 A CN 104437843A CN 201410611112 A CN201410611112 A CN 201410611112A CN 104437843 A CN104437843 A CN 104437843A
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Abstract
The invention discloses a method for obtaining a finished product of iron from iron ores. The method comprises the following processes matched in sequence: performing particle size roughing separation on the iron ores, feeding, conveying with a conveyor belt, performing magnetic separation on the finished product of iron and detecting the iron content, wherein the iron ores with the particle size of less than 50mm are delivered to the process of feeding by virtue of the process of particle size roughing separation of the iron ores; before the iron ores enter the process of magnetic separation of the finished product of iron, the iron ores need to be rolled uniformly and flatly by adopting a heavy compression roller; and the process of magnetic separation of the finished product of iron comprises processes of primary magnetic separation, secondary magnetic separation and final magnetic concentration. By adopting the method for obtaining the finished product of iron from the iron ores, the defects of high resource consumption, low working efficiency, poor product quality and the like in the prior art can be overcome, and 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 iron ore granularity be equipped with successively and roughly selects operation, feed process, tape transport operation, finished iron magnetic separation operation and iron-holder detection 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; 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 detection operation owing to comprising the iron ore granularity be 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; 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 iron ore granularity be equipped with successively and roughly select operation, feed process, tape transport operation, finished iron magnetic separation operation and iron-holder detection 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; 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. from iron ore, obtain a method for finished iron, it is characterized in that, comprise the iron ore granularity be equipped with successively and roughly select operation, feed process, tape transport operation, finished iron magnetic separation operation and iron-holder detection 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; 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%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611112.0A CN104437843A (en) | 2014-11-04 | 2014-11-04 | Method for obtaining finished product of iron from iron ores |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611112.0A CN104437843A (en) | 2014-11-04 | 2014-11-04 | Method for obtaining finished product of iron from iron ores |
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| CN104437843A true CN104437843A (en) | 2015-03-25 |
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| CN201410611112.0A Pending CN104437843A (en) | 2014-11-04 | 2014-11-04 | Method for obtaining finished product of iron from iron ores |
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- 2014-11-04 CN CN201410611112.0A patent/CN104437843A/en active Pending
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Application publication date: 20150325 |