CN1618994A - Fine iron ore agglomeration additive and its preparation method - Google Patents
Fine iron ore agglomeration additive and its preparation method Download PDFInfo
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- CN1618994A CN1618994A CN 200410091379 CN200410091379A CN1618994A CN 1618994 A CN1618994 A CN 1618994A CN 200410091379 CN200410091379 CN 200410091379 CN 200410091379 A CN200410091379 A CN 200410091379A CN 1618994 A CN1618994 A CN 1618994A
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- oxide
- iron ore
- fine iron
- diatomite
- mica
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Abstract
A sintering additive for iron ore concentrate is prepared from quartz powder, RE, mica magnesium oxide, aluminium oxide, diatomite, bellite, boric acid, and iron oxide through mixing, grinding and baking.
Description
Technical field
The present invention relates to additive, relate in particular to a kind of fine iron ore agglomeration additive and preparation method thereof that is used for.
Background technology
In the prior art, chemical additive has been widely used in all trades and professions as a kind of chemical products, become indispensable a kind of industrial chemicals in the industrial production, in the last few years, along with various countries to the requirement of environmental protection and energy-conservation aspect and the raising of standard, more and more stricter to the use of chemical additive restriction.The additive that many environmental protection and result of use are good is developed successively.But do not find both environmental protection and the good fine iron ore agglomeration additive of result of use at present as yet.In the prior art, number of patent application is CN94110361.7, denomination of invention is: a kind of sintering process for making cherry small ball by adding water soluble additives in iron concentrate, its specification sheets discloses a kind of water-soluble additive, and its composition of described additive comprises: the organic binder bond of synthetic resins, Mierocrystalline cellulose or special preparation.Still there is complex process in the use of this class additive, reduces agglomerate iron grade, the defective that downgrade and production cost are high.
Summary of the invention
The objective of the invention is to the defective that exists at additive of agglomeration for iron mine of the prior art, a kind of not only environmental protection, energy-conservation but also can improve fine iron ore agglomeration additive of smart iron ore output and performance and preparation method thereof is provided.
The technical solution that realizes purpose of the present invention is that fine iron ore agglomeration additive comprises: silica powder, rare earth, mica, magnesium oxide, aluminum oxide, diatomite, ammonium nitrate, boric acid, ferric oxide etc.
The preparation method of fine iron ore agglomeration additive of the present invention is:
1. raw materials such as the above silica powder, rare earth, mica, magnesium oxide, aluminum oxide, diatomite, ammonium nitrate, boric acid, ferric oxide mix on common mixing machine;
2. will on common pulverizer, pulverize grinding through raw materials such as mixing machine blended silica powder, rare earth, mica, magnesium oxide, aluminum oxide, diatomite, ammonium nitrate, boric acid, ferric oxide;
3. will after drying processing, the flint powder, rare earth, mica, magnesium oxide, aluminum oxide, diatomite, ammonium nitrate, boric acid, the ferric oxide that grind be packaged into bag through pulverizing.
Compare with ore deposit of the prior art iron sinter additives, fine iron ore agglomeration additive of the present invention and preparation method thereof has following significant superior effect:
1. the invention fine iron ore agglomeration additive can play catalytic combustion-supporting to solid-fuelled gasification, and combustion, stronger to the katalysis of non-carbon species in the solid fuel especially, increase solid-fuelled reactive behavior, sintering process fuel tape temperature is improved, the carrying out that helps the mineralising reaction can produce extremely many liquid phases.
2. can improve the heat transfer matter condition between sintering process one a solid liquid phase, sintering velocity is accelerated, sintering time shortens, and enhances productivity.
3. the melt temperature of compound is reduced, and ignition condition is improved, and reduces rate of return mine amount, improves yield rate.
4. the natural powder phenomenon-tion of agglomerate is suppressed, help the raising of sinter strength.
5. because the heat release energy-conserving action of reaction has reduced solid-fuelled adding in SINTERING PRODUCTION, reduce the quantity discharged of sintered discharge gas, reduced environmental pollution.
6. under the reinforcement of ignition dope, katalysis, most of liquid phase reaction can be finished being lower than below 1300 degrees centigrade, cause sintering end point in advance, the sintering utilization ratio improves, solid burnup can reduce more than 13%, and other stable cost of production process also descends synchronously.
7. can improve productivity of sintering machine more than 5%, improve the agglomerate tumbler index more than 6%, reduce ferrous content about 2%, improve yield rate, reduce the rate of return mine, economic and social benefit is remarkable.
Description of drawings
Fig. 1 is a fine iron ore agglomeration additive preparation technology schematic flow sheet of the present invention;
Embodiment
Below in conjunction with Figure of description fine iron ore agglomeration additive of the present invention and preparation side thereof are described further:
Fine iron ore agglomeration additive of the present invention forms according to following component and weight ratio:
Silica powder: 5～20%
Rare earth: 10～30%
Mica: 5～10%
Magnesium oxide: 8～15%
Aluminum oxide: 5～10%
Diatomite: 6～10%
Ammonium nitrate: 10～20%
Boric acid: 20～40%
Ferric oxide: 5～10%.
Introduce the fine iron ore agglomeration additive preparation method below in conjunction with Figure of description:
1. raw materials such as silica powder, rare earth, mica, magnesium oxide, aluminum oxide, diatomite, ammonium nitrate, boric acid, ferric oxide are mixed on common mixing machine;
2. mixed silica powder, rare earth, mica, magnesium oxide, aluminum oxide, diatomite, ammonium nitrate, boric acid, ferric oxide are pulverized grinding on shredder;
3. the fine powder of silica powder, rare earth, mica, magnesium oxide, aluminum oxide, diatomite, ammonium nitrate, boric acid, ferric oxide is dried processing, form the fine iron ore agglomeration additive fine powder;
4. the fine iron ore agglomeration additive fine powder is packaged into bag.
Fine iron ore agglomeration additive powder particle size of the present invention is 80 orders, and proportion is 0.98g/cm
3Moisture is 8.1 for being no more than the 0.2%.PH value, and is nontoxic.Fine iron ore agglomeration additive of the present invention is the superpower powder of baby pink.
The invention is not restricted to the foregoing description, for the professional in present technique field, any improvement that the embodiment of the invention is made or change can not exceed the protection domain of design of the present invention and claims.
Claims (2)
1. fine iron ore agglomeration additive, the component of described fine iron ore agglomeration additive and weight ratio are:
Silica powder: 5～20%
Rare earth: 10～30%
Mica: 5～10%
Magnesium oxide: 8～15%
Aluminum oxide: 5～10%
Diatomite: 6～10%
Ammonium nitrate: 10～20%
Boric acid: 20～40%
Ferric oxide: 5～10%.
2. according to the preparation method of the described fine iron ore agglomeration additive of claim 1, the steps include:
(1). silica powder, rare earth, mica, magnesium oxide, aluminum oxide, diatomite, ammonium nitrate, boric acid, raw iron oxide material are mixed on mixing machine;
(2). will on pulverizer, pulverize grinding through mixing machine blended silica powder, rare earth, mica, magnesium oxide, aluminum oxide, diatomite, ammonium nitrate, boric acid, raw iron oxide material;
(3). will after drying processing, the flint powder, rare earth, mica, magnesium oxide, aluminum oxide, diatomite, ammonium nitrate, boric acid, the ferric oxide that grind be packaged into bag through pulverizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410091379 CN1618994A (en) | 2004-11-25 | 2004-11-25 | Fine iron ore agglomeration additive and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410091379 CN1618994A (en) | 2004-11-25 | 2004-11-25 | Fine iron ore agglomeration additive and its preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1618994A true CN1618994A (en) | 2005-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410091379 Pending CN1618994A (en) | 2004-11-25 | 2004-11-25 | Fine iron ore agglomeration additive and its preparation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1618994A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285116B (en) * | 2007-04-09 | 2010-04-14 | 姚春彪 | Iron ore adglutinate synergism combustion adjuvant and method for preparing same |
| CN106350663A (en) * | 2015-07-16 | 2017-01-25 | 株式会社Posco | Raw material processing method and raw material processing apparatus |
| CN107365907A (en) * | 2017-06-27 | 2017-11-21 | 西安建筑科技大学 | A kind of method for improving iron ore sintering mine low temperature reduction degradation |
| CN110982579A (en) * | 2019-12-19 | 2020-04-10 | 湖北美和科技有限公司 | Boiler coking inhibitor and preparation method thereof |
-
2004
- 2004-11-25 CN CN 200410091379 patent/CN1618994A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285116B (en) * | 2007-04-09 | 2010-04-14 | 姚春彪 | Iron ore adglutinate synergism combustion adjuvant and method for preparing same |
| CN106350663A (en) * | 2015-07-16 | 2017-01-25 | 株式会社Posco | Raw material processing method and raw material processing apparatus |
| CN106350663B (en) * | 2015-07-16 | 2019-02-15 | 株式会社Posco | Material processing and material processing device |
| CN107365907A (en) * | 2017-06-27 | 2017-11-21 | 西安建筑科技大学 | A kind of method for improving iron ore sintering mine low temperature reduction degradation |
| CN107365907B (en) * | 2017-06-27 | 2019-01-11 | 西安建筑科技大学 | A method of improving iron ore sintering mine low temperature reduction degradation |
| CN110982579A (en) * | 2019-12-19 | 2020-04-10 | 湖北美和科技有限公司 | Boiler coking inhibitor and preparation method thereof |
| CN110982579B (en) * | 2019-12-19 | 2021-04-20 | 湖北美和科技有限公司 | Boiler coking inhibitor and preparation method thereof |
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