CN101736148A - Sintering-pelletizing additive, preparation method and application thereof - Google Patents
Sintering-pelletizing additive, preparation method and application thereof Download PDFInfo
- Publication number
- CN101736148A CN101736148A CN200810177559A CN200810177559A CN101736148A CN 101736148 A CN101736148 A CN 101736148A CN 200810177559 A CN200810177559 A CN 200810177559A CN 200810177559 A CN200810177559 A CN 200810177559A CN 101736148 A CN101736148 A CN 101736148A
- Authority
- CN
- China
- Prior art keywords
- iron ore
- additive
- ore pellet
- pelletizing
- pellet additive
- 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
Abstract
The invention discloses a sintering-pelletizing additive, a preparation method and application thereof. The additive consists of the following components in part by weight: 90 to 99.9 parts of magnesium oxide or magnesium carbonate and 0.1 to 10 parts of binder. The preparation method comprises: mixing all components together; adding water to turn the mixture into a pasty or mushy state; evenly stirring the obtained product; and placing, drying and crushing the obtained product into particles. The iron ore pelletizing additive adopted to smelt steel can greatly reduce energy consumption, effectively save production cost and significantly improve the quality of steel. Experiments confirm that iron ore pellets obtained by use of the additive for wrapping are less in pellet burst, and green iron ore pellets can have the compression resistance up to more than 12.03 Newton, produce no cracks after falling 9 times, and greatly reduce silicon content. Furnace-entering test confirms that the additive definitely cannot explode when entering a furnace at 1,200 DEG C and can significantly accelerate iron discharge. The additive has the advantages of shortening roasting time, raising pellet grade, reducing energy consumption and the like, along with strong bonding force, high pelletizing degree and good roasting performance.
Description
Technical field
This aspect relates to a kind of metallurgical material, relates in particular to a kind of high temperature oxidation iron ore pellets ore deposit additive of smelting iron usefulness and preparation method thereof, belongs to field of metallurgy.
Background technology
The agglomerates of sintered pellets binding agent is a key auxiliary material of producing steel industry processing pellet, and the good and bad direct relation of its performance the quality quality of pelletizing.The sintering plant pellet formation all is that binding agent is made ball with the wilkinite both at home and abroad for a long time, wilkinite is the binding agent a kind of commonly used in traditional pellet additive, wilkinite can improve the dropping strength and the ultimate compression strength of green-ball, in addition, and the burst temperature in the time of can also improving the green-ball drying.Bentonitic main component is SiO
2And AL
2O
3, whenever with addition of 1% wilkinite, the ferrous grade of pellet can descend 0.6%, and in addition, the wilkinite of every 1kg need consume coke 1.3-2kg; China's pellet on average about 3-5%, mostly exists green-ball Pulverization ratio height with addition of bentonitic percentage composition, rate of drying is slow, intensity is low, rate of return mine height, reduces phenomenon such as grade, thereby has a strong impact on the energy consumption and the output of blast furnace ironmaking.
Summary of the invention
The present invention's technical problem at first to be solved is to overcome the deficiencies in the prior art, and a kind of new iron ore pellet additive is provided.
The present invention's technical problem at first to be solved is achieved through the following technical solutions:
A kind of sintering iron ore pellet additive, mainly form by each component of following weight part:
Magnesium oxide or magnesiumcarbonate 90-99.9 part, binding agent 0.1-10 part;
Preferably, the weight part of each component is: 99.5 parts in magnesium oxide or magnesiumcarbonate, 0.5 part of binding agent;
In processing or during the smelting special steel material, also can in above-mentioned sintering iron ore pellet additive, add the rare earth of 0.01-0.1 weight part as required, can significantly improve smelt the wear resisting property and the resistance to elevated temperatures of steel.
Described binding agent can be selected from ether of cellulose or the vegetable-protein glue any or by the two mixture of forming by any part by weight.
Wherein, described ether of cellulose can be selected from any one or more mixtures of forming by arbitrary proportion in the material that methyl cellulose ether, cellulose ether or propyl methocel ether etc. have adhesive property.
It is the vegetable-protein glue described in the Chinese patent application of CN 1220292A that described vegetable-protein glue can adopt publication number; As a reference, described vegetable-protein glue can prepare in accordance with the following methods:
With plant (for example vegetables or fruit) squeeze the juice remove slag after, cultivated 10-20 days 25-30 ℃ of following constant humidity, obtain nutrient solution; After grain ground to form 580-650 purpose fine powder, carry out water treatment and obtain gluten; Above-mentioned nutrient solution and gluten are mixed, after stirring, in 31-34 ℃ moist constant temperature, cultivate, 5-10 days, promptly get vegetable-protein glue.
Another technical problem to be solved by this invention provides a kind of method for preparing above-mentioned iron ore pellet additive.
Another technical problem to be solved by this invention is achieved through the following technical solutions:
A kind of method for preparing above-mentioned iron ore pellet additive comprises:
(1) takes by weighing each component by following weight part: magnesium oxide or sal epsom 90-99.9 part, binding agent 0.1-10 part;
(2) said components is mixed after, stir, drying is ground into 500-1500 purpose particle, promptly.
Do not contain wilkinite in the iron ore pellet additive of the present invention fully, adopt industrial waste-magnesium oxide or magnesiumcarbonate in the steel-making to replace wilkinite fully, make that bentonitic consumption becomes 0 from original 15-45kg in the pelletizing additive, reduced energy consumption greatly, effectively saved a large amount of cost (wilkinite of every 1kg need consume coke 1.3-2kg when sintering), and, iron ore pellet additive of the present invention does not contain and is unfavorable for the objectionable impurities-silicon of making steel, smelting iron, so, adopt iron ore pellet additive of the present invention also can significantly improve the grade of institute's iron and steel smelting.In addition, magnesium oxide does not expand under the condition of high temperature, helps iron and steel smelting, and magnesium oxide adds in pelletizing, good dispersity, not sticking stove.Because what pelletizing was played in steel-making, ironmaking is the effect of skeleton, because magnesium oxide is high temperature resistant, can help pelletizing to finish the effect of its skeleton, in addition, the magnesium oxide good supporting force helps the oxygen circulation, and then can further save the energy.
Experiment confirm, wrap up the iron ore pellets that obtains with iron ore pellet additive of the present invention, the explosion of ball reduces, and the green-ball resistance to compression of iron ore pellets can reach 12.03 above newton, and drop does not produce slight crack 9 times, silicon content reduces to zero, throw the stove test and confirm, in the time of 1200 ℃, go into stove 100% and do not blow, and can significantly improve the speed of tapping a blast furnace, have that cohesive force is strong, pelletizing degree height, shorten roasting time, characteristics such as the roasting performance is good, pellet grade improves, cut down the consumption of energy.
The application method of iron ore pellet additive of the present invention: be used for the rotary kiln pelletizing, adopt 2-3kg iron ore pellet additive of the present invention can wrap up 1 ton of iron charge; Be used for the shaft furnace pelletizing, adopt 4kg iron ore pellet additive of the present invention can wrap up 1 ton of iron charge; With the smart powder of iron ore pellet additive of the present invention and iron according to 2-4: 1000 part by weight mixes, and after stirring, adds a certain amount of moisture, adopts disk or drum pelletizer to cause green-ball.Adopt conventional rotary kiln pelletizing method or shaft furnace pelletizing method to carry out preheating, calcining and cooling the green-ball of making, get the finished ball nodulizing.
Embodiment
Further describe the present invention below in conjunction with specific embodiment, advantage of the present invention and characteristics will be more clear along with description.But these embodiment only are exemplary, scope of the present invention are not constituted any restriction.It will be understood by those skilled in the art that and down can make amendment or replace without departing from the spirit and scope of the present invention, but these modifications and replacing all fall within the scope of protection of the present invention the details of technical solution of the present invention and form.
The preparation of embodiment 1 iron ore pellet additive
(1) takes by weighing each component (unit: Kg): magnesium oxide 99.5, vegetable-protein glue 0.5 by following weight;
(2) said components is mixed after, stir, drying is ground into 500-1500 purpose particle with high pressure draft pulverizer (Qingdao Mai Kelong powder technology equipment company produces, and its model is MQL), promptly.
The preparation of embodiment 2 iron ore pellet additives
(1) takes by weighing each component (unit: Kg): magnesium oxide 99.9, methyl cellulose ether 0.1 by following weight;
(2) said components is mixed after, stir, drying is ground into 500-1500 purpose particle with high pressure draft pulverizer (Qingdao Mai Kelong powder technology equipment company produces, and its model is MQL), promptly.
The preparation of embodiment 3 iron ore pellet additives
(1) takes by weighing each component (unit: Kg): magnesiumcarbonate 99, propyl methocel ether 1 by following weight;
(2) said components is mixed after, stir, drying is ground into 500-1500 purpose particle with high pressure draft pulverizer (Qingdao Mai Kelong powder technology equipment company produces, and its model is MQL), promptly.
The preparation of embodiment 4 iron ore pellet additives
(1) takes by weighing each component (unit: Kg): magnesium oxide 90, the mixture 10 that propyl cellulose ether and vegetable-protein glue are formed according to 1: 1 part by weight, rare earth 0.01 by following weight;
(2) said components is mixed after, stir, drying is ground into 500-1500 purpose particle with high pressure draft pulverizer (Qingdao Mai Kelong powder technology equipment company produces, and its model is MQL), promptly.
The preparation of embodiment 5 iron ore pellet additives
(1) takes by weighing each component (unit: Kg): magnesiumcarbonate 99, propyl methocel ether 1, rare earth 0.1 by following weight;
(2) said components is mixed after, stir, drying is ground into 500-1500 purpose particle with high pressure draft pulverizer (Qingdao Mai Kelong powder technology equipment company produces, and its model is MQL), promptly.
The application performance test of test example 1 iron ore pellet additive of the present invention
The iron ore pellet additive that given the test agent: embodiment of the invention 1-4 is prepared is numbered given the test agent 1, given the test agent 2, given the test agent 3 and given the test agent 4 respectively.
Test method: the part by weight of the smart powder of given the test agent 1, given the test agent 2, given the test agent 3 and given the test agent 4 and iron according to 4: 1000 mixed, after stirring, add a certain amount of moisture, adopt disk or drum pelletizer to cause green-ball; Adopt conventional rotary kiln pelletizing method or shaft furnace pelletizing method to carry out drying, preheating, calcining and cooling the green-ball of making, get the finished ball nodulizing.
Measure ultimate compression strength, dropping strength and the burst temperature of green-ball respectively according to ordinary method; Measure indexs such as the ultimate compression strength of finished ball nodulizing, wear-resistant index, concrete outcome sees Table 1.
The table 1 prepared green-ball of additive of the present invention and the performance index of finished ball nodulizing
As can be seen from the test results, the every performance with preparation-obtained green-ball of iron ore pellet additive of the present invention and finished ball nodulizing all meets the requirements.
Claims (8)
1. a sintering iron ore pellet additive mainly is made up of each component of following weight part: magnesium oxide or magnesiumcarbonate 90-99.9 part, binding agent 0.1-10 part.
2. according to the sintering iron ore pellet additive of claim 1, it is characterized in that the weight part of each component is: 99.5 parts in magnesium oxide or magnesiumcarbonate, 0.5 part of binding agent.
3. according to the iron ore pellet additive of claim 1 or 2, it is characterized in that: the rare earth that contains the 0.01-0.1 weight part.
4. according to the iron ore pellet additive of claim 1 or 2, it is characterized in that: described binding agent be selected from ether of cellulose or the vegetable-protein glue any or by the two mixture of forming by any part by weight.
5. according to the described iron ore pellet additive of claim 4, it is characterized in that: described ether of cellulose is selected from any one or more mixtures formed by arbitrary proportion in methyl cellulose ether, cellulose ether or the propyl methocel ether.
6. according to the described iron ore pellet additive of claim 4, it is characterized in that: described vegetable-protein glue prepares in accordance with the following methods: after plant expressed juice is removed slag, cultivated 10-20 days 25-30 ℃ of following constant humidity, obtain nutrient solution; After grain ground to form 580-650 purpose fine powder, carry out water treatment and obtain gluten; Above-mentioned nutrient solution and gluten are mixed, after stirring, under 31-34 ℃ condition moist constant temperature culture 5-10 days, promptly.
7. method for preparing claim 1 or 2 described sintering iron ore pellet additives comprises:
(1) takes by weighing each component by described weight part;
(2) each component is mixed after, stir, drying is ground into 500-1500 purpose particle, promptly.
8. claim 1 or the application of described iron ore pellet additive in blast furnace ironmaking, comprise: with the smart powder of described iron ore pellet additive and iron according to 2-4: 1000 part by weight mixes, after stirring, add moisture, adopt disk or drum pelletizer to cause green-ball; The green-ball of making is adopted conventional rotary kiln pelletizing method or the preheating of shaft furnace pelletizing method, calcining and cooling, get the finished ball nodulizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810177559A CN101736148A (en) | 2008-11-21 | 2008-11-21 | Sintering-pelletizing additive, preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810177559A CN101736148A (en) | 2008-11-21 | 2008-11-21 | Sintering-pelletizing additive, preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101736148A true CN101736148A (en) | 2010-06-16 |
Family
ID=42460178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810177559A Pending CN101736148A (en) | 2008-11-21 | 2008-11-21 | Sintering-pelletizing additive, preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101736148A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329952A (en) * | 2011-06-01 | 2012-01-25 | 刘贵堂 | Magnesium stone cellulose ether iron ore pellet additive as well as preparation method and application thereof |
| CN102373332A (en) * | 2010-08-17 | 2012-03-14 | 上海汉堂实业有限公司 | Ultra-micro magnesium carbonate pellet additive, preparation method thereof, and application thereof |
| CN103043992A (en) * | 2013-01-15 | 2013-04-17 | 刘贵堂 | Flame-retardant and anti-aging insulation building material and preparation method and application thereof |
| CN104263916A (en) * | 2014-10-09 | 2015-01-07 | 杨志英 | Adhesive for pellet and preparation method of pellet |
| CN106191434A (en) * | 2016-08-26 | 2016-12-07 | 辽宁科大托田炉料有限公司 | The manufacture method of a kind of iron smelting pellets is mining magnesio organic binder bond |
| CN106536690A (en) * | 2014-07-17 | 2017-03-22 | 乐天精密化学株式会社 | Composition for forming mill scale briquette, and mill scale briquette |
| CN106661475A (en) * | 2014-07-17 | 2017-05-10 | 乐天精密化学株式会社 | Composition for forming electric arc furnace dust briquette, and electric arc furnace dust briquette |
| CN107352940A (en) * | 2016-05-09 | 2017-11-17 | 华东理工大学 | A kind of magnesia pelletizing and preparation method thereof |
| CN107365908A (en) * | 2017-07-14 | 2017-11-21 | 鞍山市正大炉料有限公司 | A kind of magnesia compound binding agent of pellet and preparation method thereof and application method |
| CN108431251A (en) * | 2015-12-24 | 2018-08-21 | 乐天精密化学株式会社 | The manufacturing method of steel-making dust briquetting |
| 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 |
| CN113817918A (en) * | 2021-08-05 | 2021-12-21 | 包头钢铁（集团）有限责任公司 | Method for improving reduction expansion of high-alkali metal and high-F content pellet ore |
| CN114410960A (en) * | 2021-12-17 | 2022-04-29 | 萍乡市众邦冶金有限公司 | Pelletizing production process for steel smelting |
-
2008
- 2008-11-21 CN CN200810177559A patent/CN101736148A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373332A (en) * | 2010-08-17 | 2012-03-14 | 上海汉堂实业有限公司 | Ultra-micro magnesium carbonate pellet additive, preparation method thereof, and application thereof |
| CN102329952B (en) * | 2011-06-01 | 2013-07-31 | 刘贵堂 | Magnesium stone cellulose ether iron ore pellet additive as well as preparation method and application thereof |
| CN102329952A (en) * | 2011-06-01 | 2012-01-25 | 刘贵堂 | Magnesium stone cellulose ether iron ore pellet additive as well as preparation method and application thereof |
| CN103043992A (en) * | 2013-01-15 | 2013-04-17 | 刘贵堂 | Flame-retardant and anti-aging insulation building material and preparation method and application thereof |
| CN106661475A (en) * | 2014-07-17 | 2017-05-10 | 乐天精密化学株式会社 | Composition for forming electric arc furnace dust briquette, and electric arc furnace dust briquette |
| CN106661475B (en) * | 2014-07-17 | 2020-04-21 | 乐天精密化学株式会社 | Composition for forming arc furnace steelmaking dust cake and arc furnace steelmaking dust cake |
| CN106536690A (en) * | 2014-07-17 | 2017-03-22 | 乐天精密化学株式会社 | Composition for forming mill scale briquette, and mill scale briquette |
| CN104263916A (en) * | 2014-10-09 | 2015-01-07 | 杨志英 | Adhesive for pellet and preparation method of pellet |
| CN104263916B (en) * | 2014-10-09 | 2017-04-12 | 杨志英 | Adhesive for pellet and preparation method of pellet |
| CN108431251A (en) * | 2015-12-24 | 2018-08-21 | 乐天精密化学株式会社 | The manufacturing method of steel-making dust briquetting |
| CN107352940A (en) * | 2016-05-09 | 2017-11-17 | 华东理工大学 | A kind of magnesia pelletizing and preparation method thereof |
| CN106191434A (en) * | 2016-08-26 | 2016-12-07 | 辽宁科大托田炉料有限公司 | The manufacture method of a kind of iron smelting pellets is mining magnesio organic binder bond |
| CN107365908A (en) * | 2017-07-14 | 2017-11-21 | 鞍山市正大炉料有限公司 | A kind of magnesia compound binding agent of pellet and preparation method thereof and application method |
| 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 |
| CN113817918A (en) * | 2021-08-05 | 2021-12-21 | 包头钢铁（集团）有限责任公司 | Method for improving reduction expansion of high-alkali metal and high-F content pellet ore |
| CN114410960A (en) * | 2021-12-17 | 2022-04-29 | 萍乡市众邦冶金有限公司 | Pelletizing production process for steel smelting |
| CN114410960B (en) * | 2021-12-17 | 2023-12-12 | 萍乡市众邦冶金有限公司 | Pellet production process for steel smelting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101736148A (en) | Sintering-pelletizing additive, preparation method and application thereof | |
| CN100562589C (en) | A kind of iron ore pellets sodium bentonite based binder and preparation method thereof | |
| CN109266847B (en) | Preparation method of low-temperature consolidated metallurgical pellets | |
| CN101476001B (en) | Method for smelting medium titanium slag by blast furnace | |
| CN102676799B (en) | Preparation method for boron-magnesium composite additive for pellets and product | |
| CN103042223A (en) | Reduced iron powder production process | |
| CN101880766A (en) | Compound type binder used for pellet | |
| CN102586538B (en) | Vanadium extraction coolant and preparation method thereof | |
| CN1804057A (en) | Method for making pellet by fine-grinded steel slag instead of bentonite | |
| CN101638698B (en) | Method for smelting vanadium-titanium magnetite by blast furnace | |
| CN105002352A (en) | Preparation method of high-performance pellet binding agent | |
| CN101613798B (en) | Puddling additive and predation method thereof | |
| CN109652643A (en) | High quality sinter and preparation method thereof for COREX ironmaking technique of fusion and reduction | |
| CN103725875B (en) | High-performance pellet | |
| CN102051473B (en) | Preparation method of non-sintered carbon-bearing iron pellets | |
| CN102373332A (en) | Ultra-micro magnesium carbonate pellet additive, preparation method thereof, and application thereof | |
| CN103343219B (en) | Method for producing sintered ore by using quick lime | |
| CN103451421A (en) | Preparation method of blast furnace sludge pre-reduced pellet | |
| CN102827624B (en) | Ferrocoke and its production method | |
| CN104263916B (en) | Adhesive for pellet and preparation method of pellet | |
| CN104805280B (en) | Technology for producing metal furnace burden for high-quality electric furnace by coal-based method | |
| CN109852789A (en) | A kind of metallurgical briquetting compound binding agent and its production technology | |
| CN101586184A (en) | A kind of fast binder that utilizes ferrous material to produce cooled agglomerated pellet | |
| CN102851491A (en) | Red mud composite binder for oxidized pellets | |
| CN102816926A (en) | Bentonite used for pellets, and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20100616 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |