CN105296747B - A kind of method of comprehensive utilization of low-grade complex Ferromanganese Ore - Google Patents
A kind of method of comprehensive utilization of low-grade complex Ferromanganese Ore Download PDFInfo
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- CN105296747B CN105296747B CN201510698367.XA CN201510698367A CN105296747B CN 105296747 B CN105296747 B CN 105296747B CN 201510698367 A CN201510698367 A CN 201510698367A CN 105296747 B CN105296747 B CN 105296747B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a kind of method of comprehensive utilization of low-grade complex Ferromanganese Ore, by crushing raw ore to certain particle size, magnetic separation is carried out with high gradient magnetic separator.The valuable elements such as Pb, Zn in mine tailing are reclaimed in flotation.Sintered after flotation concentrate is well mixed with magnetic concentrate, sintering deposit enters blast furnace process, during blast furnace ironmaking, Pb is separated and recovered in blast furnace bottom and with molten iron with liquid deposition, Zn is enriched with blast furnace dust, and Fe enters next process in the form of molten iron, and Mn enters slag phase formation Mn-rich slag.So, complicated difficult selects various valuable elements in Ferromanganese Ore to be fully used.This method implements simple and reliable, and energy consumption is low, can recycle various valuable elements in raw ore, greatly improve the economic benefit of such mineral products.This invention provides a kind of feasible method and reliable theoretical foundation for the exploitation of low-grade Ferromanganese Ore.
Description
Technical field
The invention belongs to ore comprehensive reutilization field, it is related to a kind of side of low-grade complex Ferromanganese Ore comprehensive utilization
Method.
Background technology
Iron, manganese element are the important elements of steel-making, wherein, manganese element can increase substantially steel as alloying element
Hardness, increases intensity, strengthens wearability.Steel production is had great significance.With expanding economy, high-quality manganese is closed
It is increasing the need for golden steel.
Current China has substantial amounts of low-grade complex Ferromanganese Ore not to be utilized, and such ore deposit has Fe, Mn element grade low,
Ore properties are complicated, it is difficult to the characteristics of sorting.If can not be developed, the wasting of resources can be caused.The present invention is related to
A kind of method of the comprehensive utilization of low-grade complex Ferromanganese Ore.The raw ore contains Fe25~27%, Mn9~11%, in addition with
The valuable element such as a small amount of Pb, Zn.Ore Fe, Mn grade is relatively low, and property is complicated, is hardly resulted in by simple ore dressing valuable
The product of value, the sintering deposit ferrimanganic grade that direct sintering is obtained can not meet the requirement of blast furnace process.
Patent (application number CN200710062305.5) discloses a kind of method for handling low-grade manganese powder, by poor manganese ore
Powder is by selected raw material, crushing, fine grinding, sieving, mixing, stirring, micro-wave oven preheating, eventually carbon monoxide prereduction, reduction, high temperature
Refining, nitrogen cooling protection, magnetic separation purification directly prepare low-carbon metal ferromanganese.Patent (application number CN201110300784.6) is public
A kind of method of preparing manganeisen from low grade manganese mine has been opened, metal manganese content is dried for 15-30% low-grade manganese, matched somebody with somebody
Plus reducing agent, catalyst, flux and binding agent are mixed, and the compound material are inserted in rotary kiln or tunnel cave, with coal gas or day
Right gas is as the energy, and weakly reducing atmosphere in holding furnace is reacted under certain temperature schedule, reacting rear material through cooling down,
Magnetic separation obtains manganeisen and tailings.Document " the recycling research of low-grade manganese carbonate ore " mentions a kind of low-grade manganese of processing
The method of ore deposit, i.e., handled Mn8.11%, Fe3.41% raw ore using sulfuric acid leaching, and Optimal Experimental condition is reached to product
Quality requirement.Document " research of the low-grade ferrous manganese ore of Magnetization reductive roasting processing " refer to a kind of side for handling low-grade manganese
Method, in reducing atmosphere and carries out reduction roasting under uniform temperature system by Fe30-45%, Mn7-15% Ferromanganese Ore, will roast
Imitation frosted glass carries out sulfuric acid leaching again.The equal flow of above method is complicated.Patent (application number CN200710062305.5) and patent (application
Number CN201110300784.6) disclosed in method complex operation, energy consumption is big, and high cost economic benefit is low.Document " low-grade carbonic acid
The method that the recycling research of manganese ore " and document " research of the low-grade ferrous manganese ore of Magnetization reductive roasting processing " are mentioned is used
Sulfuric acid leaching, the method complex operation, time-consuming, be unfavorable for industrialized production.And study above not to containing it
Corresponding report is made in the recovery of its valuable metal element, causes the wasting of resources.The present invention is want by ore dressing-sintering-ironmaking work
Sequence, reaches the purpose of various valuable metals and raising economic worth in comprehensive utilization raw ore, is such low-grade complex mineral products
Develop and theoretical foundation is provided.
The content of the invention
The problem of presently, there are for the processing of current low-grade complex Ferromanganese Ore, i.e. ore dressing can not obtain economic worth
Product, sinter quality obtained by direct sintering is unable to reach the requirement of blast furnace.It is an object of the invention to provide one kind operation letter
The mineral products are developed and utilized by the single, method that flow is short, energy consumption is small, economic worth is high.
To achieve these goals, the method for comprehensive utilization of low-grade complex Ferromanganese Ore of the present invention：By low-grade complex iron
Manganese ore crushing raw ore is to -1mm, and the raw ore after crushing carries out magnetic separation, magnetic tailing floatation and recovery of lead, zinc using magnetic plant；Magnetic
Concentrate selection mixed with flotation concentrate after as raw materials for sintering；Blast furnace process is carried out to the sintering deposit after sintering；Will from blast furnace bottom
Pb liquid is reclaimed, and molten iron is used to make steel, and Mn elements enter blast furnace slag phase formation Mn-rich slag, and Zn volatilizations are simultaneously returned in blast furnace dust
Receive.
Low-grade complex ferrimanganic green ore described in the above method contains Fe25~27%, Mn9~11%, also a small amount of
Pb、Zn。
In the above method after crushing raw ore using Wet-type high gradient magnetic separator carry out magnetic separation, magnetic field intensity be 1.1T~
1.3T。
In multiplex xanthate consumption it is 300~600g/t in the above method, No. 2 oily consumptions are 0.03ml~0.04ml/t conditions
It is lower that magnetic tailing is subjected to flotation, reclaim Pb, Zn element in mine tailing.
It is 8- in mixture moisture as raw materials for sintering after magnetic concentrate is mixed with flotation concentrate in the above method
10%, fuel ratio be 5-6% (solid fuel accounts for the percentage of fuel and raw material gross mass) under the conditions of be prepared into sintering deposit.
Sintering deposit is reduced 3~4.5 hours in blast furnace in the above method, make lead, iron, zinc fully reduce and manganese not also
It is former；Lead liquid after reduction, which is enriched with and reclaimed in blast furnace bottom, obtains lead product；Iron is lower one of work that molten iron enters smelting iron and steel
Sequence；Zn-ef ficiency is enriched with and recycled in dust of the blast furnace containing zinc；Manganese element enters blast furnace slag phase, as Mn grades 25%
Mn-rich slag product above.
Compared with prior art, the present invention has the advantage that：By magnetic separation, the ferrimanganic grade of raw materials for sintering is improved；
The mine tailing of magnetic separation carries out flotation, and Pb, Zn in mine tailing are recycled, economic benefit is improved；Through oversintering, carbonic acid can be made
Salt and sulfide-based mineral are decomposed, and further increase element grade；Magnetic separation yield is high, and the tailings glass amount of flotation is few and not
It need to regrind；Magnetic concentrate mixed with flotation concentrate after as raw materials for sintering, substantially improve the granularmetric composition of raw materials for sintering and burn
Tie high yield rate；The process of blast furnace process, various valuable elements are recycled, and obtain the production rich in this kind of element
Product.This flow process is few, and operation is simple, and element recovery rate is high, and energy consumption is low, substantially increases the value of raw ore, is a large amount of
Low-grade complex ore deposit exploitation provide theoretical foundation.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Embodiment
The present invention is intended to further illustrate with reference to embodiments, is not intended to limit the present invention.
According to methods described, products obtained therefrom parameter after each process is contrasted respectively, to be illustrated the present invention.
High gradient wet magnetic separation is carried out after crushing raw ore, example is as follows：
Embodiment 1：For raw ore miberal powder, when magnetic field intensity is 1.1T~1.3T, the yield of concentrate is more than 88%, Fe
The rate of recovery be more than 90%, Mn the rate of recovery be more than 85%, Pb the rate of recovery be more than 65%, Zn the rate of recovery be 76%
More than.
Embodiment 2：It is being 300~600g/t in multiplex xanthate consumption, No. 2 oily consumptions are 0.03ml~0.04ml/t conditions
Under, concentrate yield is that 23.87%, the Fe rate of recovery is that the rate of recovery that 22.60%, the Mn rate of recovery is 27.35%, Pb is 83.52%,
The Zn rate of recovery is 69.08%.
Embodiment 3：Mixture moisture is 9% or so, and when fuel ratio is 5.5% or so, sintered cup usage factor is
0.765t/m2H, yield rate is 64.26%, and drum strength is 63.33%.
Embodiment 4：Reduced by sintering deposit in blast furnace 3~4.5 hours, lead water and molten iron and slag are respectively by each going out
Mouth is reclaimed, and Mn grades reach that Zn grades are more than 30% in more than 25%, dust in Mn-rich slag.
Claims (1)
1. a kind of method of comprehensive utilization of low-grade complex Ferromanganese Ore, it is characterised in that：Low-grade complex ferrimanganic green ore is broken
- 1mm is broken to, the raw ore after crushing carries out magnetic separation, magnetic tailing floatation and recovery of lead, zinc using magnetic plant；Magnetic concentrate is with floating
Raw materials for sintering is used as after concentrate selection mixing；Blast furnace process is carried out to the sintering deposit after sintering；Pb liquid is returned from blast furnace bottom
Receive, molten iron is used to make steel, Mn elements enter blast furnace slag phase formation Mn-rich slag, Zn volatilizations are simultaneously reclaimed in blast furnace dust；
Described low-grade complex ferrimanganic green ore contains Fe25~27%, Mn9~11%, also a small amount of Pb, Zn；
Magnetic separation is carried out using Wet-type high gradient magnetic separator after crushing raw ore, magnetic field intensity is 1.1T~1.3T；
It is 300~600g/t in multiplex xanthate consumption, No. 2 oily consumptions are to enter magnetic tailing under the conditions of 0.03ml~0.04ml/t
Row flotation, reclaims Pb, Zn element in mine tailing；
It is 8-10% in mixture moisture, fuel ratio is 5- as raw materials for sintering after magnetic concentrate is mixed with flotation concentrate
Sintering deposit is prepared under the conditions of 6%；
Sintering deposit is reduced 3~4.5 hours in blast furnace, makes that lead, iron, zinc are fully reduced and manganese is not reduced；Lead liquid after reduction
It is enriched with and reclaims in blast furnace bottom and obtains lead product；Iron is the next process that molten iron enters smelting iron and steel；Zn-ef ficiency is in blast furnace
It is enriched with and recycles in dust containing zinc；Manganese element enters blast furnace slag phase, is produced as Mn-rich slag of the Mn grades more than 25%
Product.
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| CN105714120A (en) * | 2016-04-12 | 2016-06-29 | 唐山市金岭工贸有限公司 | Comprehensive utilization method of low-quality ferromanganese ore slag and steel iron industrial waste |
| CN107602108B (en) * | 2017-09-11 | 2019-10-29 | 中南大学 | A method of MnZn nickel ferrite magnetic material is prepared using low ore grade nickel resource |
| CN109868336B (en) * | 2019-03-12 | 2020-12-18 | 山东钢铁股份有限公司 | Method for controlling manganese content in molten steel |
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| CN101525695B (en) * | 2009-04-15 | 2010-09-08 | 韩江霖 | Method for recycling zinc fume in enrichment smelting technology of manganese |
| CN104437882B (en) * | 2014-11-21 | 2016-09-28 | 广西大学 | A kind of method of microfine Pb-Zn deposits thing in FLOTATION SEPARATION mine tailing |
| CN104646173B (en) * | 2015-01-31 | 2017-02-22 | 中南大学 | Method for recovering manganese and carbon from low-grade carbon manganese ore |
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