CN109338102A - The method for preparing pellet binder using vanadium titano-magnetite weathered ore - Google Patents
The method for preparing pellet binder using vanadium titano-magnetite weathered ore Download PDFInfo
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- CN109338102A CN109338102A CN201811482823.7A CN201811482823A CN109338102A CN 109338102 A CN109338102 A CN 109338102A CN 201811482823 A CN201811482823 A CN 201811482823A CN 109338102 A CN109338102 A CN 109338102A
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- China
- Prior art keywords
- magnetite
- vanadium titano
- weathered ore
- ageing
- ore
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to vanadium titano-magnetite field of metallurgy, especially a kind of recycling for making full use of v-ti magnetite weathered ore, and realize the method for preparing pellet binder using vanadium titano-magnetite weathered ore of the preparation of pellet binder, include the following steps: a, vanadium titano-magnetite weathered ore is crushed to 10mm or less by crushing plant；B, broken vanadium titano-magnetite weathered ore is mixed with sodium agent, blender stirs evenly, and stacks ageing；C, the semi-finished product after ageing are delivered to dryer to be dried, the moisture content of material is less than 2% after drying；D, the material after drying carries out grinding by milling equipment, and grinding to -200 mesh accountings reaches 95% or more.The present invention is discarded weathered ore using new way is opened up, and realizes waste utilization, reduces mine secondary disaster and occur, reduce pellet production cost.Present invention is particularly suitable among the recycling of vanadium titano-magnetite weathered ore.
Description
Technical field
The present invention relates to vanadium titano-magnetite field of metallurgy, it is viscous that especially a kind of utilization vanadium titano-magnetite weathered ore prepares pelletizing
The method for tying agent.
Background technique
Acidic oxidation pelletizing due to have many advantages, such as good metallurgical performance and improve breathability of stock column for blast furnace, be considered as
Realize that Bf Burden optimizes necessary high-quality furnace charge, the effect in steel and iron industry is more and more important, usage amount
It is increasing.Bentonite produces acidic oxidation pelletizing binder as iron ore concentrate, the drying to material balling-up and green-ball, preheating
Process plays important consolidation, but after addition of bentonite, and leading to acidic oxidation pellet, increased production cost, all iron content
It reduces, also has a certain impact to Iron-smelting slag making and furnace life, selecting the substitute of super quality and competitive price is always metallargist
Key subjects.The Baima Iron Mine of China Panzhihua Region is super-huge hillside open pit, and weathering mineral content accounts for about 20% (its
Quantity reaches 100,000,000 tons or more), the TFe content of weathered ore is 20~28%, TiO2Content 4-6%, V2O5Content is 0.2-
0.4%.
The weathered ore for having tens of thousands of tons is piled up in mining area periphery every year in carrying out mine stripping process by mining area, day accumulates the moon
Tired, more heap is more, this part resource not only fails to be fully utilized, and impacts to the operating environment in mining area,
Rainy season also usually causes spontaneous combustion disaster, causes the accidents such as landslide.Therefore, it is necessary to increase the synthesis of this part resource by all kinds of means
Using dynamics, improves mining area operating environment, avoid the generation of landslide accident He other secondary disasters.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of recycling for making full use of v-ti magnetite weathered ore, and realize
The method for preparing pellet binder using vanadium titano-magnetite weathered ore of the preparation of pellet binder.
The technical solution adopted by the present invention to solve the technical problems is: it is viscous to prepare pelletizing using vanadium titano-magnetite weathered ore
The method for tying agent, includes the following steps: a, vanadium titano-magnetite weathered ore is crushed to 10mm or less by crushing plant；B, it will break
Vanadium titano-magnetite weathered ore after broken is mixed with sodium agent, and blender stirs evenly, and stacks ageing；C, by half after ageing at
Product are delivered to dryer and are dried, and the moisture content of material is less than 2% after drying；D, the material after drying carries out powder by milling equipment
Mill, grinding to -200 mesh accountings reach 95% or more.
It is described and to stack ageing number of days be 20 days or so further, in step b.
Further, the semi-finished product after ageing are done via Belt Conveying to high-efficiency energy-saving drying machine in step c
It is dry.
The beneficial effects of the present invention are: the present invention, which is sufficiently directed to vanadium titano-magnetite weathered ore, has carried out corresponding exploitation, lead to
Broken, stirring, sodium modification, ageing and powder powder-grinding are crossed, production has index similar with bentonite and performance, can substitute
The binder product of bentonite production acid pellet.It is discarded weathered ore using new way is opened up, realizes waste utilization, reduce mine
Mountain secondary disaster occurs, and reduces pellet production cost.Present invention is particularly suitable for the recycling of vanadium titano-magnetite weathered ore benefits
Among.
Specific embodiment
The method for preparing pellet binder using vanadium titano-magnetite weathered ore includes the following steps: a, by vanadium titano-magnetite
Weathered ore is crushed to 10mm or less by crushing plant；B, broken vanadium titano-magnetite weathered ore is mixed with sodium agent, is stirred
The machine of mixing stirs evenly, and stacks ageing；C, the semi-finished product after ageing are delivered to dryer to be dried, the water of material after drying
Part is less than 2%；D, the material after drying carries out grinding by milling equipment, and grinding to -200 mesh accountings reaches 95% or more.As
It is described and to stack ageing number of days be 20 days or so and preferred steps c in preferred steps b to the prioritization scheme of above scheme
In, the semi-finished product after ageing are dried via Belt Conveying to high-efficiency energy-saving drying machine.
Concretely, weathered ore is crushed to 10mm in step a hereinafter, uniformly, being avoided to allow material size to refine
Material is excessive, influences binder product quality.Product granularity refinement can use jaw crusher, hammer mill or circular cone
Crusher needs as long as material size is made to meet production.Due in step b of the present invention blender stirring, sodium modification and
Ageing process is stacked, more harsh to the requirement of product material size, material size is excessive, and sodium agent mixes unevenly with material, sodium
Agent cannot be effectively diffused in material, be stacked in ageing process in step b, material sodium is not thorough, and influences to bond
Agent properties of product.
Material sodium process in step b is because weathered ore contains certain Fe and higher SiO2, weathered ore processing life
After binder, being generated for pelletizing, the Fe in weathered ore can restore recycling in blast furnace, it comprehensively utilizes, and in weathered ore
SiO2, distinctive caking property through sodium modification, stack ageing, dry grinding, thoroughly discharge, there is extremely strong caking property,
Materiel machining, less than 3%, after -200 mesh of granularity reaches 90% or more powder, can effectively substitute bentonite at moisture content, as
Binder is used for pelletizing production.Sodium agent used in material sodium process is sodium carbonate, in sodium chloride, sodium hydroxide in step b
At least one, for sodium agent ratio by 5%~8% addition, the purpose is to utilize Na in sodium agent+Activity, make in weathered ore
SiO2Caking property thoroughly discharges.In step b after material addition sodium agent, the selection of mixing plant in agitating procedure, without special
It is required that meeting produced on-site requirement as long as reaching, material and sodium agent are stirred evenly.Material stacks ageing work in step b
Sequence must undergo 20 days or so, in order to which the activity for thoroughly discharging silica in material makes product meet pelletizing production
It is required that ageing process will ensure the moisture content that material contains 8%~10%, there is time enough, moisture content is insufficient or the time is too short,
Material cannot abundant sodium modification, influence product quality.
The baking process of semi-product material in step c, material moisture content must be dried to 2% hereinafter, so as to the production after grinding
Product storage stores for future use.Semi-product material moisture content is greater than 2% in step c, when product warehousing stores after grinding, is easy hardened change
Firmly, it is not used to pelletizing production.Offer vanadium titano-magnetite weathered ore of the invention is half in the applying step c in pellet binder
Drying equipment in the baking process of finished product materials belongs to the high equipment of energy consumption in technique production, needs using energy-efficient
Drying equipment ensures the applicating energy-saving environmental protection of offer vanadium titano-magnetite weathered ore of the invention in pellet binder.
Product powder-grinding process in step d, -200 mesh of binder granularity need to reach 95% or more, and -200 mesh of product granularity is low
In 95%, binder product is used for pelletizing production, and green-ball production rate is relatively poor on balling disk (-sc), and granularity is thicker, and green-ball is raw
It is poorer at rate.Product powder-grinding process in step d, -200 mesh of binder granularity need to reach 95% or more, and binder product is used for
Pelletizing production, green-ball production rate is relatively preferable on balling disk (-sc), and granularity is thinner, and green-ball production rate is higher, but product fineness
It improves, production cost is improved simultaneously, tested by large-scale industry, and as a kind of optimal selection, -200 mesh of binder granularity is needed
Reach 95% or more, can satisfy pelletizing production requirement.Product powder-grinding process in step d, used milling equipment can be with
Using Raymond mill, the milling equipments such as high-pressure roller mill, preferably high-pressure roller mill, the occupation area of equipment is small, and yield is high, energy consumption
It is low.
The present invention is discarded weathered ore using new way is opened up, and realizes waste utilization, reduces mine secondary disaster and occur, drop
Low pellet production cost has very wide market promotion prospect.
Claims (3)
1. the method for preparing pellet binder using vanadium titano-magnetite weathered ore, which comprises the steps of:
A, vanadium titano-magnetite weathered ore is crushed to 10mm or less by crushing plant；
B, broken vanadium titano-magnetite weathered ore is mixed with sodium agent, blender stirs evenly, and stacks ageing；
C, the semi-finished product after ageing are delivered to dryer to be dried, the moisture content of material is less than 2% after drying；
D, the material after drying carries out grinding by milling equipment, and grinding to -200 mesh accountings reaches 95% or more.
2. the method for preparing pellet binder using vanadium titano-magnetite weathered ore as described in claim 1, it is characterised in that: step
It is described and to stack ageing number of days be 20 days or so in rapid b.
3. the method for preparing pellet binder using vanadium titano-magnetite weathered ore as claimed in claim 1 or 2, feature exist
In: in step c, the semi-finished product after ageing are dried via Belt Conveying to high-efficiency energy-saving drying machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811482823.7A CN109338102A (en) | 2018-12-05 | 2018-12-05 | The method for preparing pellet binder using vanadium titano-magnetite weathered ore |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811482823.7A CN109338102A (en) | 2018-12-05 | 2018-12-05 | The method for preparing pellet binder using vanadium titano-magnetite weathered ore |
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| CN109338102A true CN109338102A (en) | 2019-02-15 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974681A (en) * | 2010-11-10 | 2011-02-16 | 攀枝花钢城集团米易瑞地矿业有限公司 | Application of weathered ores modified by sodiumizing agent as pellet binder |
| CN101985690A (en) * | 2010-11-10 | 2011-03-16 | 攀枝花钢城集团米易瑞地矿业有限公司 | Pellet binding agent and preparation method thereof |
| CN103614552A (en) * | 2013-12-13 | 2014-03-05 | 攀枝花钢城集团米易瑞地矿业有限公司 | Method of preparing acidic oxidized pellet binder by weathered ores |
-
2018
- 2018-12-05 CN CN201811482823.7A patent/CN109338102A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974681A (en) * | 2010-11-10 | 2011-02-16 | 攀枝花钢城集团米易瑞地矿业有限公司 | Application of weathered ores modified by sodiumizing agent as pellet binder |
| CN101985690A (en) * | 2010-11-10 | 2011-03-16 | 攀枝花钢城集团米易瑞地矿业有限公司 | Pellet binding agent and preparation method thereof |
| CN103614552A (en) * | 2013-12-13 | 2014-03-05 | 攀枝花钢城集团米易瑞地矿业有限公司 | Method of preparing acidic oxidized pellet binder by weathered ores |
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Application publication date: 20190215 |