CN102115818A - Binder for metallurgical cold-pressed pellets and using method thereof - Google Patents
Binder for metallurgical cold-pressed pellets and using method thereof Download PDFInfo
- Publication number
- CN102115818A CN102115818A CN2009102489774A CN200910248977A CN102115818A CN 102115818 A CN102115818 A CN 102115818A CN 2009102489774 A CN2009102489774 A CN 2009102489774A CN 200910248977 A CN200910248977 A CN 200910248977A CN 102115818 A CN102115818 A CN 102115818A
- Authority
- CN
- China
- Prior art keywords
- binding agent
- binder
- metallurgical
- percent
- pressing ball
- 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 relates to the field of metallurgical cold-pressed pellets, in particular to a binder for the metallurgical cold-pressed pellets. The binder consists of the following components in percentage by weight: 71.4 to 91 percent of MgO and 9 to 28.6 percent of MgCl2.6H2O, wherein the particle size of the MgO and the MgCl2.6H2O is 50 to 200 meshes, and the water content is less than 1 percent. A using method of the binder comprises the following steps of: uniformly mixing and milling 79 to 94.5 percent of iron-containing dust mud and 5.5 to 21 percent of binder in a mixing mill, and performing cold pressing forming by using a cold pressing forming machine with the pressure of 1,000 to 3,000N when the temperature of the materials is between 38 and 45 DEG C. The invention has the advantages that: the binder meets the production requirement of the metallurgical cold-pressed pellets on strength, the compression strength of a single pellet reaches 1,800N after a 2m free drop test is performed for more than six times, and the production cost of the metallurgical cold-pressed pellets is reduced.
Description
Technical field
The present invention relates to metallurgical coal-pressing ball field, relate in particular to a kind of metallurgical coal-pressing ball binding agent and using method thereof.
Background technology
In metallurgy industry, implement the environmental protection recycling economy.To the ion dust mud contaning comprehensive utilization that in smelting, rolling process, produces, produce the Fe-C pelletizing of colding pressing and be used for converter steelmaking, be wherein one.
When this project of enforcement, be to utilize sodium silicate solution and silicon oxide to make binding agent at present, but its cohesive strength can not reach the production requirement of the Fe-C pelletizing of colding pressing, both colded pressing 2 meters high free fall tests of Fe-C pelletizing finished product more than 6 times, single ball compressive resistance reach 1800 newton, Fe-C pelletizing percentage of damage is too high in the production, can not satisfy production requirement.
Summary of the invention
The purpose of this invention is to provide a kind of metallurgical coal-pressing ball binding agent and using method thereof, reach the Fe-C pelletizing product intensity production requirement of colding pressing, reduce production costs.
For solving the problems of the technologies described above, the present invention realizes by the following technical solutions:
A kind of metallurgical coal-pressing ball binding agent, form by weight percentage by following composition:
MgO 71.4～91％；
MgCl
2·6H
2O 9～28.6％。
Described MgO and MgCl
26H
2The granularity of O is 50～200 orders, and water content is less than 1%.
The using method of above-mentioned a kind of metallurgical coal-pressing ball binding agent is with 79～94.5% ion dust mud contanings and 5.5%～21% binding agent mixed grind 5～20 minutes in mixing pan, and mixed grind is even, when temperature of charge reaches 38 ℃～45 ℃, through chilling press coldmoulding.
Described chilling press pressure is 1000～3000 newton.
Compared with prior art, the invention has the beneficial effects as follows: this binder formula has reached the production requirement of metallurgical coal-pressing ball intensity, both 2 meters high free fall tests more than 6 times, single ball ultimate compression strength reached 1800 newton, use this binder formula simultaneously, also reduced metallurgical coal-pressing ball and production cost, reduced of the influence of Si element steel-making.
Embodiment
The present invention will be further described below in conjunction with embodiment:
Embodiment 1
A kind of metallurgical coal-pressing ball binding agent, form by weight percentage by following two kinds of compositions:
MgO?91％，MgCl
2·6H
2O?9％。
The using method of above-mentioned a kind of metallurgical coal-pressing ball binding agent is that mixed grind is even, when temperature of charge reaches 45 ℃, through chilling press coldmoulding under 100 tons of pressure with 94.5% ion dust mud contaning and 5.5% binding agent mixed grind 5～20 minutes in mixing pan.
Embodiment 2
A kind of metallurgical coal-pressing ball binding agent, form by weight percentage by following two kinds of compositions:
MgO?87％，MgCl
2·6H
2O 13％。
The using method of above-mentioned a kind of metallurgical coal-pressing ball binding agent is that mixed grind is even, when temperature of charge reaches 43 ℃, through chilling press coldmoulding under 150 tons of pressure with 91.4% ion dust mud contaning and 8.6% binding agent mixed grind 5～20 minutes in mixing pan.
Embodiment 3
A kind of metallurgical coal-pressing ball binding agent, form by weight percentage by following two kinds of compositions:
MgO?83％，MgCl
2·6H
2O?17％。
The using method of above-mentioned a kind of metallurgical coal-pressing ball binding agent is that mixed grind is even, when temperature of charge reaches 41 ℃, through chilling press coldmoulding under 200 tons of pressure with 88.3% ion dust mud contaning and 11.7% binding agent mixed grind 5～20 minutes in mixing pan.
Embodiment 4
A kind of metallurgical coal-pressing ball binding agent, form by weight percentage by following two kinds of compositions:
MgO?79％，MgCl
2·6H
2O?21％。
The using method of above-mentioned a kind of metallurgical coal-pressing ball binding agent is that mixed grind is even, when temperature of charge reaches 40 ℃, through chilling press coldmoulding under 250 tons of pressure with 85.2% ion dust mud contaning and 14.8% binding agent mixed grind 5～20 minutes in mixing pan.
Embodiment 5
A kind of metallurgical coal-pressing ball binding agent, form by weight percentage by following two kinds of compositions:
MgO?75％，MgCl
2·6H
2O?25％。
The using method of above-mentioned a kind of metallurgical coal-pressing ball binding agent is that mixed grind is even, when temperature of charge reaches 39 ℃, through chilling press coldmoulding under 280 tons of pressure with 82.1% ion dust mud contaning and 17.9% binding agent mixed grind 5～20 minutes in mixing pan.
Embodiment 6
A kind of metallurgical coal-pressing ball binding agent, form by weight percentage by following two kinds of compositions:
MgO?71.4％，MgCl
2·6H
2O?28.6％。
The using method of above-mentioned a kind of metallurgical coal-pressing ball binding agent is that mixed grind is even, when temperature of charge reaches 38 ℃, through chilling press coldmoulding under 300 tons of pressure with 79% ion dust mud contaning and 21% binding agent mixed grind 5～20 minutes in mixing pan.
MgO and MgCl among the embodiment
26H
2The granularity of O is 50～200 orders, and water content is less than 1%.
The present invention is through production test, the intensity of using the metallurgical coal-pressing ball of binding agent of the present invention is higher than far away uses the metallurgical coal-pressing ball that water glass, silicon oxide are made binding agent, has reached 2 meters high free fall tests more than 6 times, single ball ultimate compression strength reaches more than 1800 newton.
Claims (4)
1. a metallurgical coal-pressing ball binding agent is characterized in that, is made up of by weight percentage following two kinds of compositions:
MgO 71.4～91％；
MgCl
2·6H
2O 9～28.6％。
2. a kind of metallurgical coal-pressing ball binding agent according to claim 1 is characterized in that described MgO and MgCl
26H
2The granularity of O is 50～200 orders, and water content is less than 1%.
3. the using method of the described a kind of metallurgical coal-pressing ball binding agent of claim 1, it is characterized in that, with 79～94.5% ion dust mud contanings and 5.5%～21% binding agent mixed grind 5～20 minutes in mixing pan, mixed grind is even, when temperature of charge reaches 38 ℃～45 ℃, through chilling press coldmoulding.
4. the using method of a kind of metallurgical coal-pressing ball binding agent according to claim 3 is characterized in that, described chilling press pressure is 1000～3000 newton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102489774A CN102115818A (en) | 2009-12-31 | 2009-12-31 | Binder for metallurgical cold-pressed pellets and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102489774A CN102115818A (en) | 2009-12-31 | 2009-12-31 | Binder for metallurgical cold-pressed pellets and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102115818A true CN102115818A (en) | 2011-07-06 |
Family
ID=44214740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102489774A Pending CN102115818A (en) | 2009-12-31 | 2009-12-31 | Binder for metallurgical cold-pressed pellets and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102115818A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268543A (en) * | 2011-08-30 | 2011-12-07 | 北京科技大学 | Shaping adhesive for chromium powder ore cold-pressed pellets and using method of shaping adhesive |
| CN102747217A (en) * | 2012-06-14 | 2012-10-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Grading technology for cold-pressed pelletizing and shaft furnace magnetization roasting of powdery refractory iron oxide ore |
| CN102747221A (en) * | 2012-06-14 | 2012-10-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for making cold-pressed balls through using powdery material containing iron |
-
2009
- 2009-12-31 CN CN2009102489774A patent/CN102115818A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268543A (en) * | 2011-08-30 | 2011-12-07 | 北京科技大学 | Shaping adhesive for chromium powder ore cold-pressed pellets and using method of shaping adhesive |
| CN102747217A (en) * | 2012-06-14 | 2012-10-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Grading technology for cold-pressed pelletizing and shaft furnace magnetization roasting of powdery refractory iron oxide ore |
| CN102747221A (en) * | 2012-06-14 | 2012-10-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for making cold-pressed balls through using powdery material containing iron |
| CN102747217B (en) * | 2012-06-14 | 2016-06-08 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Powdery difficulty selects iron oxide ore cold-pressing balls agglomeration, shaft furnace magnetizing roasting sorting process |
| CN102747221B (en) * | 2012-06-14 | 2016-10-05 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Make the method for cold-pressing balls of iron content granular material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101649392B (en) | Pelletizing method of ilmenite concentrates and pellet binder | |
| CN105861818B (en) | A kind of pelletizing high efficiency composition bentonite | |
| CN101985689A (en) | Composite binder for iron ore pellets and preparation method thereof | |
| CN103042223A (en) | Reduced iron powder production process | |
| CN1804057A (en) | Method for making pellet by fine-grinded steel slag instead of bentonite | |
| CN102899484B (en) | Iron coke composite pellets with high reactivity and high strength as well as manufacturing method thereof | |
| CN105567953A (en) | Iron-containing organic metallurgical pellet binder and preparation method thereof | |
| CN104988308B (en) | Iron ore pellets richness iron compound binding agent and preparation method and purposes | |
| CN102337396A (en) | Iron-smelting metallized pellets prepared by utilizing metallurgical dust and mud and production method thereof | |
| CN104478449A (en) | Machined carbon-free corundum spinel brick for ladles and preparation method thereof | |
| CN102912120B (en) | A kind of preparation method of high strength coal-pressing ball | |
| CN102115818A (en) | Binder for metallurgical cold-pressed pellets and using method thereof | |
| CN102603339B (en) | Fireproof castable | |
| CN103725873B (en) | One freezes off knot ball press technique high magnesium consolidating agent and using method | |
| CN103160302A (en) | Processing method of metallurgical dust mud containing iron carbon zinc | |
| CN105714108A (en) | Pellet binder and pellet produced therefrom | |
| CN102827624B (en) | Ferrocoke and its production method | |
| CN101597696A (en) | The method of method for smelting magnesium by hot | |
| CN103146914B (en) | Cold-pressed high-strength fluorite pellet binder and use method thereof | |
| CN100529003C (en) | Binder adapted for production of cooled agglomerated pellet by using iron-bearing material | |
| CN102121065A (en) | Mineral powder moulding binder | |
| CN104017985A (en) | Boron mud powder additive for improving performance of pelletizing ores and sintering ores and preparation method and application method of additive | |
| CN104046772A (en) | Method for making cooled agglomerated pellets by use of converter gas dry-method electrostatic precipitator | |
| CN102816926A (en) | Bentonite used for pellets, and preparation method thereof | |
| CN104232888A (en) | Method for preparing cooled agglomerated pellets by using dry method electric fly ash of converter gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110706 |