CN102021322A - Method for preparing novel binder for metallurgic pellets - Google Patents
Method for preparing novel binder for metallurgic pellets Download PDFInfo
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- CN102021322A CN102021322A CN2009101874416A CN200910187441A CN102021322A CN 102021322 A CN102021322 A CN 102021322A CN 2009101874416 A CN2009101874416 A CN 2009101874416A CN 200910187441 A CN200910187441 A CN 200910187441A CN 102021322 A CN102021322 A CN 102021322A
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Abstract
The invention belongs to metallurgical raw material and pretreatment technology, and in particular relates to a method for preparing a novel binder for metallurgic pellets. The method comprises the following steps of: crushing natural calcium base bentonite, adding 2 to 5 weight parts of sodium carbonate into 100 weight parts of crushed natural calcium base bentonite, uniformly mixing the two materials, extruding the mixture to form blocks, stacking the extruded blocks for 15 to 20 days to complete sodium treatment, naturally air-drying the blocks which are subjected to the sodium treatment for 5 to 15 days, performing hot air drying on the naturally air-dried blocks to ensure that the moisture content is below 12 weight percent, adding 1.1 to 2.0 weight parts of sodium cellulose, uniformly stirring, grinding by using a grinding mill to ensure that more than 90 percent of blocks is ground to below 43 microns so as to prepare novel binder products for the metallurgic pellets, and grading and bagging the products. The method can effectively improve the pelletizing of green pellets, improve the cracking temperature of the green pellets and improve the metallurgical performance of pellet ore and has the effects of increasing production and reducing consumption on pellet ore production.
Description
Technical field
The invention belongs to metallurgical raw material and preconditioning technique, particularly relate to the preparation method of a kind of novel metallurgical pelletizing with binding agent.
Background technology
For many years, mining industry pelletizing plant once used the man wilkinite of number as pellet binder, and bentonitic soil species mainly is the natural calcium base bentonite, and its unit consumption is more than 35kg/ ton ball, and this unit consumption is than higher.Also once tested and used separately sodium bentonite, though unit consumption decrease, owing to the explosion problem is failed.Be to select the more excellent pellet binder of use properties, reduce binding agent in the pellet formation process with addition of amount, guarantee the full iron grade of finished ball nodulizing, improve the pellet metallurgical performance, be starved of the binding agent that a kind of novel metallurgical pellet formation of research and development is used.
Summary of the invention
The purpose of this invention is to provide the preparation method of a kind of novel metallurgical pelletizing, with addition of the binding agent consumption, improve pellet product iron grade in the reduction pellet sintering process with binding agent.
The objective of the invention is to realize by following technical proposals:
According to the preparation method of novel metallurgical pelletizing of the present invention, it is characterized in that comprising the steps: with binding agent
1) the natural calcium base bentonite is pulverized,
2) add the yellow soda ash of 2-5 part weight ratio in the natural calcium base bentonite through pulverizing of 100 parts of weight ratios,
3) two kinds of material are mixed,
4) compound is squeezed into piece,
The piece stockpile that 5) will be squeezed into is put and was finished sodium in 15-20 days,
6) the piece material that will finish sodium carried out natural airing 5-15 days,
7) the piece material that will finish natural airing carries out warm air drying, makes moisture reach weight percent below 12%,
8) with addition of the sodium cellulosate of 1.1-2.0 part weight ratio, stirring and evenly mixing,
9) be milled to below 43 microns through ore grinding and account for more than 90%, make novel metallurgical pelletizing binder product,
10) product is carried out classification, pack.
In the pellet production process, substitute calcium-base bentonite or sodium bentonite with binding agent with novel metallurgical pelletizing of the present invention, can effectively improve the balling-up of green-ball, improve the burst temperature of green-ball, improve the metallurgical performance of pellet, production has the effect of volume increase consumption reduction to pellet.
Novel metallurgical pelletizing of the present invention has with the advantage of binding agent:
1, reduces the pellet formation content of binder, improve pellet iron grade.Content of binder is reduced to 16kg/ ton ball by unit consumption 35kg/ ton ball, and pelletizing iron grade improves one percentage point, and economic benefit is obvious.
2, this binding agent can effectively improve the green-ball balling property, improves the burst temperature of green-ball, and the burst temperature of green-ball is brought up to 450 ℃ by 400 ℃, shortens time of drying, improves production capacity.
3, experimental result shows, the pellet metallurgical performance that this binding agent is produced is stable.To the domestic similar ore beneficiation meaning of offering reference, obvious social benefit.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with embodiment.
According to the preparation method of novel metallurgical pelletizing of the present invention, it is characterized in that comprising the steps: with binding agent
1) the natural calcium base bentonite is pulverized,
2) add the yellow soda ash of 2-5 part weight ratio in the natural calcium base bentonite through pulverizing of 100 parts of weight ratios,
3) two kinds of material are mixed,
4) compound is squeezed into piece,
The piece stockpile that 5) will be squeezed into is put and was finished sodium in 15-20 days,
6) the piece material that will finish sodium carried out natural airing 5-15 days,
7) the piece material that will finish natural airing carries out warm air drying, makes moisture reach weight percent below 12%,
8) with addition of the polyacrylamide of 1.1-2.0 part weight ratio, stirring and evenly mixing,
9) be milled to below 43 microns through ore grinding and account for more than 90%, make novel metallurgical pelletizing binder product,
8) with addition of the polyacrylamide of 0.8-1.5 part weight ratio, stirring and evenly mixing,
9) be milled to below 43 microns through ore grinding and account for more than 90%, make novel metallurgical pelletizing binder product,
10) product is carried out classification, pack.
The invention has the beneficial effects as follows:
1, reduces the pelletizing production content of binder, improve pellet iron grade. Content of binder is reduced to 16kg/ ton ball by unit consumption 35kg/ ton ball, and pelletizing iron grade improves one percentage point, and economic benefit is obvious.
2, this binding agent can effectively improve the green-ball balling property, improves the burst temperature of green-ball, and the burst temperature of green-ball is brought up to 450 ℃ by 400 ℃, shortens drying time, improves production capacity.
3, experimental result shows, the metallurgical properties that this binding agent is produced is stable. To the domestic similar ore beneficiation meaning of offering reference, social benefit is remarkable.
Claims (1)
1. the preparation method of a novel metallurgical pelletizing usefulness binding agent is characterized in that comprising the steps:
1) the natural calcium base bentonite is pulverized,
2) add the yellow soda ash of 2-5 part weight ratio in the natural calcium base bentonite through pulverizing of 100 parts of weight ratios,
3) two kinds of material are mixed,
4) compound is squeezed into piece,
The piece stockpile that 5) will be squeezed into is put and was finished sodium in 15-20 days,
6) the piece material that will finish sodium carried out natural airing 5-15 days,
7) the piece material that will finish natural airing carries out warm air drying, makes moisture reach weight percent below 12%,
8) with addition of the sodium cellulosate of 1.1-2.0 part weight ratio, stirring and evenly mixing,
9) be milled to below 43 microns through ore grinding and account for more than 90%, make novel metallurgical pelletizing binder product,
10) product is carried out classification, pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101874416A CN102021322A (en) | 2009-09-18 | 2009-09-18 | Method for preparing novel binder for metallurgic pellets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101874416A CN102021322A (en) | 2009-09-18 | 2009-09-18 | Method for preparing novel binder for metallurgic pellets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102021322A true CN102021322A (en) | 2011-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101874416A Pending CN102021322A (en) | 2009-09-18 | 2009-09-18 | Method for preparing novel binder for metallurgic pellets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102021322A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974750A (en) * | 2012-05-03 | 2013-03-20 | 董宪姝 | Preparation method of nature sodium base bentonite for precise casting |
| CN106755985A (en) * | 2016-12-20 | 2017-05-31 | 江苏省冶金设计院有限公司 | The composite dry powder binding agent and iron powder forming method of iron powder shaping |
| CN113953025A (en) * | 2021-10-11 | 2022-01-21 | 中铝中州铝业有限公司 | Method for grinding viscous bauxite |
-
2009
- 2009-09-18 CN CN2009101874416A patent/CN102021322A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974750A (en) * | 2012-05-03 | 2013-03-20 | 董宪姝 | Preparation method of nature sodium base bentonite for precise casting |
| CN102974750B (en) * | 2012-05-03 | 2015-08-19 | 董宪姝 | A kind of preparation method of hot investment casting natural sodium bentonite |
| CN106755985A (en) * | 2016-12-20 | 2017-05-31 | 江苏省冶金设计院有限公司 | The composite dry powder binding agent and iron powder forming method of iron powder shaping |
| CN113953025A (en) * | 2021-10-11 | 2022-01-21 | 中铝中州铝业有限公司 | Method for grinding viscous bauxite |
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Application publication date: 20110420 |