CN107043852A - It is a kind of to be used to prepare compound additive of V-ti Bearing Magnetite Pellets and preparation method thereof - Google Patents
It is a kind of to be used to prepare compound additive of V-ti Bearing Magnetite Pellets and preparation method thereof Download PDFInfo
- Publication number
- CN107043852A CN107043852A CN201710160419.7A CN201710160419A CN107043852A CN 107043852 A CN107043852 A CN 107043852A CN 201710160419 A CN201710160419 A CN 201710160419A CN 107043852 A CN107043852 A CN 107043852A
- Authority
- CN
- China
- Prior art keywords
- compound additive
- weight
- parts
- binding agent
- magnetite pellets
- 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.)
- Pending
Links
Classifications
-
- 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
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
-
- 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
- C22B1/02—Roasting processes
-
- 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
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
Abstract
The present invention relates to a kind of compound additive for being used to prepare V-ti Bearing Magnetite Pellets and preparation method thereof.The compound additive includes binding agent, the hardening agent of 20~30 parts by weight, the magnesia matrix of 60~75 parts by weight of 5~10 parts by weight；Methods described includes：Take the magnesia matrix of the binding agent, the hardening agent of 20~30 parts by weight, 60~75 parts by weight of 5~10 parts by weight to be well mixed, then grind.The compound additive consumption that the present invention is provided is less, the grade influence of pelletizing is smaller, compared to traditional pelletizing prepared by bentonite, using the compound additive of the present invention, it is possible to increase the reduction sex index and cryogenic reducting powder index of V-ti Bearing Magnetite Pellets, and reduce reduction swellability index, the intensity of V-ti Bearing Magnetite Pellets can be improved simultaneously, its sintering temperature is reduced, roasting energy consumption is reduced, improve the metallurgical performance of V-ti Bearing Magnetite Pellets, improve product quality.
Description
Technical field
The present invention relates to ironmaking field, and in particular to a kind of compound additive for being used to prepare V-ti Bearing Magnetite Pellets, with
And the method for preparing the compound additive.
Background technology
In Chengde of China, Panxi Diqu, be richly stored with v-ti magnetite ore resources.Vanadium titano-magnetite be a kind of iron,
The grandidierite of the multielement symbiosis such as vanadium, titanium, with very high comprehensive utilization value.At this stage, the utilization of China's vanadium titano-magnetite
Mode is mainly formed into sintering deposit or pellet feeding blast furnace process.In addition, also having a small amount of using rotary kiln, the gentle base of rotary hearth furnace
The technique of shaft kiln directly reduced smelting.
Vanadium titano-magnetite is complicated, grade is low, titaniferous amount high, and very big difficulty is caused to agglomeration and smelting process,
Belong to difficult choosing, difficult burning, the ore of difficult refining.Blast furnace or gas-based shaft kiln are either used, vanadium titano-magnetite is smelted and is required for providing
It disclosure satisfy that the pellet into stove requirement.China is mainly used as additive during pellet is produced using bentonite.It is domestic
Iron and steel enterprise is bentonitic big with dosage, and causing the grade of pellet reduces.Also, during high temperature reduction, easily produce
Fayalite, is unfavorable for effective reduction of ferro element in pellet, causes production efficiency to reduce, energy consumption increase.Therefore, individually make
With additive of the bentonite as production pellet, it is difficult to meet production requirement.It is right particularly when using gas-based shaft kiln technique
Pellet quality requires higher.
Therefore, for the composition and design feature of vanadium titano-magnetite, develop and prepare V-ti Bearing Magnetite Pellets accordingly
Additive, for significant effectively using v-ti magnetite ore resources.
The content of the invention
In view of the above-mentioned problems, the present invention is intended to provide a kind of be used to prepare the compound additives of V-ti Bearing Magnetite Pellets, with
And the method for preparing this kind of compound additive.The compound additive that the present invention is provided can improve the grade of V-ti Bearing Magnetite Pellets
And intensity, and the sintering temperature of pelletizing is reduced, improve the product quality of pelletizing.
The invention provides a kind of compound additive for being used to prepare V-ti Bearing Magnetite Pellets, the compound additive includes
The binding agent of 5~10 parts by weight, the hardening agent of 20~30 parts by weight, the magnesia matrix of 60~75 parts by weight.
Further, the granularity of the compound additive is less than 200 mesh, also, granularity is less than the compound additive of 300 mesh
Quality accounting >=50%.
It is preferred that, the binding agent is one or more of mixtures in α starch, Sodium Polyacrylate, polyacrylamide.
The hardening agent is borax, MnO2One or both of mixture.
It is preferred that, the binding agent is the mixture of one or both of α starch, polyacrylamide.The hardening agent
For CaCl2, borax, MnO2In one or more of mixtures.
Further, the magnesia matrix is magnesite or light calcined magnesia.
Present invention also offers a kind of method for preparing above-mentioned compound additive, including：Take the bonding of 5~10 parts by weight
Agent, the hardening agent of 20~30 parts by weight, the magnesia matrix of 60~75 parts by weight are well mixed, and are then ground, and obtain described
Compound additive.
It is less provided by the present invention for the compound additive consumption for preparing V-ti Bearing Magnetite Pellets, only account for pelletizing gross weight
0.8~1.5%, it is smaller on the influence of the grade of pelletizing.Compared to traditional pelletizing prepared by bentonite, using the present invention's
Compound additive, it is possible to increase the reduction sex index and cryogenic reducting powder index of V-ti Bearing Magnetite Pellets, and reduce reduction
Expansion index.Also, the compound additive that the present invention is provided, it is possible to increase the intensity of V-ti Bearing Magnetite Pellets, reduces its roasting
Temperature, reduces roasting energy consumption, improves the metallurgical performance of V-ti Bearing Magnetite Pellets, improve the product matter of V-ti Bearing Magnetite Pellets
Amount.
Embodiment
With reference to embodiments, the embodiment to the present invention is described in more details, so as to more preferably
Ground understands the solution of the present invention and the advantage of its various aspects.However, specific embodiments described below and embodiment are only
It is the purpose of explanation, rather than limitation of the present invention.
Present invention firstly provides a kind of compound additive for being used to prepare V-ti Bearing Magnetite Pellets.The compound additive
It is made up of binding agent, hardening agent, magnesia matrix.Wherein, the quality accounting of each component is：Binding agent：Hardening agent：Magnesia matrix=
5~10：20~30：60~75.
Compound additive prepared by the present invention is solid powdery, and granularity is respectively less than 200 mesh.Also, add in described be combined
Plus in agent, granularity is less than quality accounting >=50% of the compound additive of 300 mesh.
The binding agent of the present invention is one or more of mixtures in α starch, Sodium Polyacrylate, polyacrylamide, and
And do not limit the quality accounting of each component in mixture.
In the present invention, the hardening agent of selection is CaCl2, borax, MnO2In one or more of mixtures, and do not limit
The quality accounting of each component in mixture processed.
Wherein, MnO2Decomposable asymmetric choice net produces O at high temperature2.Because the content of FeO in vanadium titano-magnetite is higher, in roasting vanadium titanium
, it is necessary to oxygen-enriched air blast during Magnetite Pellets, to ensure that FeO can be with fully oxidized.Therefore, MnO is contained in additive2When, can be with
Strengthen oxidizing atmosphere during pellet roasting.Meanwhile, MnO2Fe can be used as by decomposing the MnO produced3O4Oxidation generation Fe2O3Process
Catalyst.
CaCl2There is invigoration effect for the oxidizing roasting process of V-ti Bearing Magnetite Pellets, vanadium titano-magnetite ball is increased
The compression strength of group.Also, the reduction degradation for V-ti Bearing Magnetite Pellets is inhibited.
Borax can effectively reduce the temperature of V-ti Bearing Magnetite Pellets roasting process, shorten the time of roasting process, reduction
Energy consumption.
Also, in the additive of the present invention, when containing Sodium Polyacrylate in binding agent, it should not then be included in hardening agent
CaCl2.Because, when Sodium Polyacrylate and CaCl2When being dissolved in the water, Sodium Polyacrylate can exist with the form of electrolyte, easily by
Ca2+Influence, form insoluble salt, cause molecule cross-link and gelation is precipitated, so as to reduce the viscosity of additive.
The magnesia matrix of the present invention selects magnesite or light calcined magnesia.Magnesite and light calcined magnesia can be effectively improved
The quality of vanadium titano-magnetite green-ball, and lift the metallurgical performance of V-ti Bearing Magnetite Pellets.
SiO in the compound additive prepared compared to traditional swelling soil additive, the present invention2, the harmful substance such as P, S
Content it is less.The V-ti Bearing Magnetite Pellets prepared by the compound additive of the present invention, grade is higher.Also, the v-ti magnetite
The sintering temperature of ore deposit pelletizing can reduce by 30~50 DEG C, and metallurgical performance is substantially improved.Further, the V-ti Bearing Magnetite Pellets
Reduction sex index improves 5~10%, and cryogenic reducting powder index improves 6% or so, and reduction swellability index reduces 5~
8%.
Meanwhile, present invention also offers a kind of method for preparing above-mentioned compound additive.The preparation method of the present invention includes：
Take the above-mentioned magnesia matrix of the above-mentioned binding agent, the above-mentioned hardening agent of 20~30 parts by weight, 60~75 parts by weight of 5~10 parts by weight
It is well mixed, then grind, that is, obtain can be used in the compound additive for preparing V-ti Bearing Magnetite Pellets.Also, through grinding
The mesh number of the broken compound additive of milling is below 200 mesh.Further, granularity is less than the matter of the compound additive of 300 mesh
Amount accounting is not less than 50%.
When preparing V-ti Bearing Magnetite Pellets, the quality accounting of the compound additive of addition is：0.8~1.5%.
Embodiment 1
Binding agent, hardening agent, magnesia matrix are well mixed, 200 mesh is crushed to and all passes through, also, granularity is less than 300
Mesh powder is higher than 50wt% (wt% is mass percent), obtains compound additive.Wherein, the composition of compound additive is：
Binding agent (Sodium Polyacrylate) 5wt%, hardening agent (borax 80wt%, MnO220wt%) 25wt%, magnesia matrix (magnesite)
70wt%.
Embodiment 2
Binding agent, hardening agent, magnesia matrix are well mixed, 200 mesh is crushed to and all passes through, also, granularity is less than 300
Mesh powder is higher than 53wt%, obtains compound additive.Wherein, the composition of compound additive is：Binding agent (α starch 60wt%,
Polyacrylamide 40wt%) 5wt%, hardening agent (borax 50wt%, MnO225wt%, CaCl225wt%) 20wt%, magnesia
Matrix (light calcined magnesia) 75wt%.
Embodiment 3
Binding agent, hardening agent, magnesia matrix are well mixed, 200 mesh is crushed to and all passes through, also, granularity is less than 300
Mesh powder is higher than 55wt%, obtains compound additive.Wherein, the composition of compound additive is：Binding agent (α starch)
10wt%, hardening agent (borax 40wt%, MnO230wt%, CaCl230wt%) 30wt%, magnesia matrix (light calcined magnesia)
60wt%.
The performance of compound additive using vanadium titano-magnetite concentrate to being prepared in embodiment has carried out experimental verification, to make
Standby V-ti Bearing Magnetite Pellets.In contrast experiment, 2wt% bentonite is added as additive.In confirmatory experiment, it is separately added into
The compound additive that 1wt% embodiment 1 is prepared to embodiment 3.In contrast experiment and confirmatory experiment, it is ensured that pelletizing parameter and
Thermal regulation is consistent.According to country or the detection method of professional standard, the vanadium titanium prepared respectively to contrast experiment and confirmatory experiment
The performance indications of Magnetite Pellets are determined, and are shown in Table 1.
The main component for the vanadium titano-magnetite concentrate that the present invention is selected is：TFe 57.18wt%, FeO 16.67wt%,
SiO21.16wt%, Al2O32.69wt%, CaO 0.16wt%, MgO 1.98wt%, TiO212.94wt%, V2O5
0.65wt%.Also, the vanadium titano-magnetite concentrate is solid powdery, wherein powder of the particle diameter below 200 mesh is accounted for
82.16wt%.The specific surface area of the vanadium titano-magnetite concentrate is 1620cm2/g。
The parameter of balling process is：Balling time：12min；Pelletizing moisture：8.5wt%.
The parameter of thermal regulation is：Preheating temperature：950℃；Preheating time：18min；Sintering temperature：1250℃；During roasting
Between：15min.
Vanadium titano-magnetite green-ball and the quality index of finished pellet prepared by the different additive of table 1
(remarks：RI is reduction degree index；RSI is free reduction swellability index, is volumetric expansion；RDI is low-temperature reduction powder
Change index, in terms of+3.15 ㎜.)
As shown in Table 1, the vanadium titano-magnetite green-ball and finished pellet prepared by the compound additive of the present invention, its each side
The performance indications in face are excellent compared with the vanadium titano-magnetite green-ball and finished pellet prepared by traditional bentonite as additive.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the field, it can also do on the basis of the above description
Go out other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
Among the obvious changes or variations that Shen goes out is still in protection scope of the present invention.
Claims (8)
1. a kind of be used to prepare the compound additives of V-ti Bearing Magnetite Pellets, it is characterised in that the compound additive includes 5~
The binding agent of 10 parts by weight, the hardening agent of 20~30 parts by weight, the magnesia matrix of 60~75 parts by weight.
2. compound additive according to claim 1, it is characterised in that the granularity of the compound additive is less than 200 mesh,
Also, granularity is less than compound additive quality accounting >=50% of 300 mesh.
3. compound additive according to claim 1, it is characterised in that the binding agent be α starch, Sodium Polyacrylate,
One or more of mixtures in polyacrylamide.
4. compound additive according to claim 3, it is characterised in that the hardening agent is borax, MnO2In one kind or
Two kinds of mixture.
5. compound additive according to claim 1, it is characterised in that the hardening agent is CaCl2, borax, MnO2In
One or more of mixtures.
6. compound additive according to claim 5, it is characterised in that the binding agent is in α starch, polyacrylamide
One or two kinds of mixtures.
7. compound additive according to claim 1, it is characterised in that the magnesia matrix is magnesite or light-burned oxidation
Magnesium.
8. a kind of method for preparing any compound additives of claim 1-7, it is characterised in that methods described includes：Take 5
The binding agent of~10 parts by weight, the hardening agent of 20~30 parts by weight, the magnesia matrix of 60~75 parts by weight are well mixed, Ran Houyan
Milling is broken, obtains the compound additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710160419.7A CN107043852A (en) | 2017-03-17 | 2017-03-17 | It is a kind of to be used to prepare compound additive of V-ti Bearing Magnetite Pellets and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710160419.7A CN107043852A (en) | 2017-03-17 | 2017-03-17 | It is a kind of to be used to prepare compound additive of V-ti Bearing Magnetite Pellets and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107043852A true CN107043852A (en) | 2017-08-15 |
Family
ID=59545104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710160419.7A Pending CN107043852A (en) | 2017-03-17 | 2017-03-17 | It is a kind of to be used to prepare compound additive of V-ti Bearing Magnetite Pellets and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107043852A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796216A (en) * | 2018-06-29 | 2018-11-13 | 辽宁科技大学 | A kind of pellet femic compound binding agent and its preparation and application |
| CN109355494A (en) * | 2018-11-22 | 2019-02-19 | 攀钢集团攀枝花钢铁研究院有限公司 | It is a kind of can be improved anti-grinded hardness index containing the pelletizing and preparation method thereof containing chromic vanadium-titanium ferroferrite |
| CN111057878A (en) * | 2020-01-02 | 2020-04-24 | 长沙有色冶金设计研究院有限公司 | Ore dressing method for vanadium ore |
| CN112899471A (en) * | 2021-01-19 | 2021-06-04 | 东北大学 | Method for preparing large-size composite vanadium-titanium pellet ore |
| CN114737054A (en) * | 2022-04-19 | 2022-07-12 | 兴和县新太铁合金有限公司 | Production method of chromite oxidized pellets |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4356027A (en) * | 1979-09-03 | 1982-10-26 | Kobe Steel, Limited | Iron ore pellets containing magnesium oxide |
| CN101899566A (en) * | 2009-05-27 | 2010-12-01 | 宝山钢铁股份有限公司 | High polymer binder for cold bond pellet and preparation method thereof |
| CN104357654A (en) * | 2014-11-11 | 2015-02-18 | 重庆科技学院 | Special composite enhancer for sintering WLD-2 type vanadium titano-magnetite and preparation method of special composite enhancer |
-
2017
- 2017-03-17 CN CN201710160419.7A patent/CN107043852A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4356027A (en) * | 1979-09-03 | 1982-10-26 | Kobe Steel, Limited | Iron ore pellets containing magnesium oxide |
| CN101899566A (en) * | 2009-05-27 | 2010-12-01 | 宝山钢铁股份有限公司 | High polymer binder for cold bond pellet and preparation method thereof |
| CN104357654A (en) * | 2014-11-11 | 2015-02-18 | 重庆科技学院 | Special composite enhancer for sintering WLD-2 type vanadium titano-magnetite and preparation method of special composite enhancer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796216A (en) * | 2018-06-29 | 2018-11-13 | 辽宁科技大学 | A kind of pellet femic compound binding agent and its preparation and application |
| CN108796216B (en) * | 2018-06-29 | 2020-01-24 | 辽宁科技大学 | Pellet iron-magnesium composite binder and preparation and use methods thereof |
| CN109355494A (en) * | 2018-11-22 | 2019-02-19 | 攀钢集团攀枝花钢铁研究院有限公司 | It is a kind of can be improved anti-grinded hardness index containing the pelletizing and preparation method thereof containing chromic vanadium-titanium ferroferrite |
| CN111057878A (en) * | 2020-01-02 | 2020-04-24 | 长沙有色冶金设计研究院有限公司 | Ore dressing method for vanadium ore |
| CN112899471A (en) * | 2021-01-19 | 2021-06-04 | 东北大学 | Method for preparing large-size composite vanadium-titanium pellet ore |
| CN112899471B (en) * | 2021-01-19 | 2022-04-12 | 东北大学 | Method for preparing large-size composite vanadium-titanium pellet ore |
| CN114737054A (en) * | 2022-04-19 | 2022-07-12 | 兴和县新太铁合金有限公司 | Production method of chromite oxidized pellets |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107043852A (en) | It is a kind of to be used to prepare compound additive of V-ti Bearing Magnetite Pellets and preparation method thereof | |
| CN100562589C (en) | A kind of iron ore pellets sodium bentonite based binder and preparation method thereof | |
| CN102220440B (en) | Vanadium-titanium magnetite blast furnace smelting method capable of improving vanadium yield | |
| CN100348744C (en) | Iron ore pellet and its preparation method | |
| CN103981310B (en) | A kind of method of smelting vanadium-titanium magnetite by blast furnace | |
| WO2021197258A1 (en) | Oxidized pellet binding agent made from low-rank coal, preparation method for same, and applications thereof | |
| CN104232886A (en) | Raw materials for production of oxidized pellets with low reduction expansion rate and preparation method of oxidized pellets | |
| CN103937969B (en) | A kind of powdered iron ore pellet binder and application thereof | |
| CN105907948A (en) | Magnetic separation method for low-grade chromium-containing vanadium titanium magnetite metalized pellet | |
| CN101338362A (en) | High titan type high alkalinity sinter and method for preparing same | |
| CN104357657A (en) | Method for preparing oxidized pellets from converter dedusting ash | |
| CN101638698B (en) | Method for smelting vanadium-titanium magnetite by blast furnace | |
| CN101654737B (en) | Compound iron ore pellet of molybdenum tailings and sulfate slags and preparation method thereof | |
| CN104561534A (en) | Magnesium containing fluxed oxide pellets and preparation method thereof | |
| CN106521148A (en) | Method for preparing high carbon ferro-chrome by fusible chrome fine ore | |
| CN109266848A (en) | Prepare the binder of oxidation of chromite pelletizing | |
| CN102409170A (en) | High-mechanical strength carbon-containing pellets for blast furnace and production method for high-mechanical strength carbon-containing pellets | |
| CN103451421A (en) | Preparation method of blast furnace sludge pre-reduced pellet | |
| CN102787188A (en) | Process for smelting vanadium-containing pig iron by high-silicon vanadium titanomagnetite concentrate powder | |
| CN106191434A (en) | The manufacture method of a kind of iron smelting pellets is mining magnesio organic binder bond | |
| CN107345272A (en) | A kind of pellet binder and its preparation and application containing magnesia | |
| CN104017985A (en) | Boron mud powder additive for improving performance of pelletizing ores and sintering ores and preparation method and application method of additive | |
| CN108796216B (en) | Pellet iron-magnesium composite binder and preparation and use methods thereof | |
| CN103614551B (en) | Pellet ore with good metallurgical property and proper alkalinity, and preparation method thereof | |
| CN103924066B (en) | The preparation method of vanadium titano-magnetite hot wafering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170815 |