CN103692143A - Granulated blast-furnace slag powder concentrator shell protecting method - Google Patents
Granulated blast-furnace slag powder concentrator shell protecting method Download PDFInfo
- Publication number
- CN103692143A CN103692143A CN201310728695.0A CN201310728695A CN103692143A CN 103692143 A CN103692143 A CN 103692143A CN 201310728695 A CN201310728695 A CN 201310728695A CN 103692143 A CN103692143 A CN 103692143A
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- China
- Prior art keywords
- powder concentrator
- powder
- wearing layer
- conical shell
- wear
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
- B02C23/22—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating with recirculation of material to crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Glanulating (AREA)
Abstract
The invention discloses a granulated blast-furnace slag powder concentrator shell protecting method. The method includes a wear-resistant layer is coated inside the conical shell of a powder concentrator so as to protect the shell. The wear-resistant layer comprises, by weight percentage, 25-55% of grade 32.5 cement or cement with grade larger than 32.5, 15-45% of 10-50 mesh carborundum, 15-45% of 50-150 mesh quartz sand and 2-3% of redispersible latex powder which are well and fully mixed. Compared with the prior art, the method has the advantages that the powder concentrator is protected effectively from being abraded, the service life of the powder concentrator is prolonged, the production and operation cost is reduced, the service life of the conical shell of the powder concentrator is increased to 2-3 times of the original service life, normal slag powder feed back is not affected by the wear-resistant layer, and no adverse impact on production is caused.
Description
Technical field
The present invention relates to GBFS production method and device technique field, relate in particular to a kind of method of GBFS powder concentrator protection.
Background technology
Granulated slag powder is the fine grained product that the grain slag that produces in blast furnace ironmaking process produces after by grinding selection by winnowing, mainly as admixture, be used for building materials field, in Granulated slag powder production process, slag powders fineness is controlled by powder concentrator, powder concentrator is selected the slag powders product that reaches qualified fineness, defective coarse granule slag powders is returned and in grinding machine, is again carried out grinding, powder concentrator is comprised of rotor and housing, slag powder after grinding enters powder concentrator inside from powder concentrator outside through guide vane with air-flow, the rotor of High Rotation Speed drives and selects powder blade to sieve slag powder, qualified slag powders is selected to be walked, underproof slag powders is returned the blanking channel of conical shell inside, finally get back on the mill in grinding machine.
Due to underproof slag powder in producing, all to fall the inside of powder concentrator conical shell and return to grinding machine, through powder, wash away enclosure interior is caused to breakage for a long time, all to change or repair welding powder concentrator every year, affect the normal work of powder concentrator, increase the production run cost of enterprise.Powder concentrator is steel material, has certain anti-wear performance, but because slag powder is thinner, has stronger erosion, so depend merely on the anti-wear performance of powder concentrator itself, is nowhere near.
Summary of the invention
The object of the present invention is to provide a kind of method of GBFS powder concentrator protection, at the inner last layer wearing layer that is coated with of powder concentrator conical shell, reach the object of its protection housing.
For achieving the above object, the present invention realizes by the following technical solutions:
A method for GBFS powder concentrator protection, at the inner last layer wearing layer that is coated with of powder concentrator conical shell, reaches the object of its protection housing, and concrete operation step is as follows:
1) in production process, find that defective slag powders is when inner by powder concentrator conical shell, the housing that slag powders is often washed away causes the position of wearing and tearing to carry out mark;
2) wearing layer is coated in the good region of mark, the material of wearing layer and proportioning wt% are as follows:
Label 32.5 cement or be greater than the cement 25%～55% of 32.5 labels;
10～50 object diamond dust 15%～45%;
50～150 object quartz sands 15%～45%;
Redispersable latex powder 2%～3%;
After mixing, fully stir until evenly;
3) wearing layer being stirred is evenly spread upon to the inner position easy to wear of powder concentrator conical shell that mark is crossed, moulding, is used after maintenance.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention has not only effectively protected powder concentrator wear prevention; extend powder concentrator service life, reduce production and operation cost, make its powder concentrator conical shell be increased to original 2～3 times service life; smear wearing layer does not affect the normal feed back of slag powders simultaneously, to producing, does not cause any negative effect.
The specific embodiment
Below the specific embodiment of the present invention is further illustrated:
A method for GBFS powder concentrator protection, at the inner last layer wearing layer that is coated with of powder concentrator conical shell, reaches the object of its protection housing, and concrete operation step is as follows:
1) observe in process of production defective slag powders blanking distribution situation, find defective slag powders when inner by powder concentrator conical shell, be mostly distributed in conical shell inside below, the housing that slag powders is often washed away causes the position of wearing and tearing to carry out mark;
2) wearing layer is coated in the good region of mark, the material of wearing layer and proportioning wt% are as follows:
Label 32.5 cement or be greater than the cement 25%～55% of 32.5 labels;
10～50 object diamond dust 15%～45%;
50～150 object quartz sands 15%～45%;
Redispersable latex powder 2%～3%;
After mixing, fully stir until evenly;
3) wearing layer being stirred is evenly spread upon to the inner position easy to wear of powder concentrator conical shell that mark is crossed, moulding, is used after maintenance.
Below in conjunction with embodiment, illustrate.
Embodiment 1:
Wearing layer consists of:
Above-mentioned material external adding water is stirred, evenly spread upon powder concentrator conical shell inner, maintenance 48h.
By wet type rubber wheel abrasive grain wear test, relatively smear the wearability of the powder concentrator of wearing layer front and back, result of the test sees the following form.
| Classification | Average weightless (g/cm 2） | Relative wear resistance |
| Do not smear wearing layer powder concentrator | 0.2399 | 1.00 |
| Smear wearing layer | 0.1959 | 2.30 |
Be original 2.3 times the service life of smearing the powder concentrator after wearing layer.
Embodiment 2:
Wearing layer consists of:
Above-mentioned material external adding water is stirred, evenly spread upon powder concentrator conical shell inner, maintenance 48h.
By wet type rubber wheel abrasive grain wear test, relatively smear the wearability of the powder concentrator of wearing layer front and back, result of the test sees the following form.
| Classification | Average weightless (g/cm 2） | Relative wear resistance |
| Do not smear wearing layer powder concentrator | 0.2399 | 1.00 |
| Smear wearing layer | 0.1733 | 2.48 |
Be original 2.48 times the service life of smearing the powder concentrator after wearing layer.
Embodiment 3:
Wearing layer consists of:
Above-mentioned material external adding water is stirred, evenly spread upon powder concentrator conical shell inner, maintenance 48h.
By wet type rubber wheel abrasive grain wear test, relatively smear the wearability of the powder concentrator of wearing layer front and back, result of the test sees the following form.
| Classification | Average weightless (g/cm 2） | Relative wear resistance |
| Do not smear wearing layer powder concentrator | 0.2399 | 1.00 |
| Smear wearing layer | 0.1251 | 2.62 |
Be original 2.62 times the service life of smearing the powder concentrator after wearing layer.
Claims (1)
1. a method for GBFS powder concentrator protection, at the inner last layer wearing layer that is coated with of powder concentrator conical shell, reaches the object of its protection housing, it is characterized in that, concrete operation step is as follows:
1) in production process, find that defective slag powders is when inner by powder concentrator conical shell, the housing that slag powders is often washed away causes the position of wearing and tearing to carry out mark;
2) wearing layer is coated in the good region of mark, the material of wearing layer and proportioning wt% are as follows:
Label 32.5 cement or be greater than the cement 25%～55% of 32.5 labels;
10～50 object diamond dust 15%～45%;
50～150 object quartz sands 15%～45%;
Redispersable latex powder 2%～3%;
After mixing, fully stir until evenly;
3) wearing layer being stirred is evenly spread upon to the inner position easy to wear of powder concentrator conical shell that mark is crossed, moulding, is used after maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310728695.0A CN103692143A (en) | 2013-12-25 | 2013-12-25 | Granulated blast-furnace slag powder concentrator shell protecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310728695.0A CN103692143A (en) | 2013-12-25 | 2013-12-25 | Granulated blast-furnace slag powder concentrator shell protecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103692143A true CN103692143A (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310728695.0A Pending CN103692143A (en) | 2013-12-25 | 2013-12-25 | Granulated blast-furnace slag powder concentrator shell protecting method |
Country Status (1)
| Country | Link |
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| CN (1) | CN103692143A (en) |
Citations (10)
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| CN1294229A (en) * | 2000-11-28 | 2001-05-09 | 郑弘� | Colour corundum bricks for sideway |
| CN101648792A (en) * | 2009-06-29 | 2010-02-17 | 上海东升新材料有限公司 | Protecting mortar of express highway roadbed surface hard-face terrace |
| WO2010115482A1 (en) * | 2009-04-09 | 2010-10-14 | Märkisches Werk GmbH | Method for repairing worn valve spindles |
| CN102060479A (en) * | 2009-11-16 | 2011-05-18 | 中冶建筑研究总院有限公司 | Ultrahigh-strength wear-resisting plate with cement base and production method thereof |
| CN202074182U (en) * | 2011-05-17 | 2011-12-14 | 赵宁 | Wear-resistant ceramic coating with integral structure |
| KR101164623B1 (en) * | 2012-04-23 | 2012-07-11 | 우리건설 주식회사 | Mortar composition for repairing concrete structure and using method thereof |
| CN102718448A (en) * | 2012-04-28 | 2012-10-10 | 深圳市爱思宝科技发展有限公司 | Glaze and method for forming glaze layer |
| CN103102173A (en) * | 2013-01-18 | 2013-05-15 | 深圳市爱思宝科技发展有限公司 | Preparation method for glaze surface layer |
| US20130156555A1 (en) * | 2011-12-15 | 2013-06-20 | General Electric Company | Braze materials, brazing processes, and components with wear-resistant coatings formed thereby |
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2013
- 2013-12-25 CN CN201310728695.0A patent/CN103692143A/en active Pending
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| CN1294229A (en) * | 2000-11-28 | 2001-05-09 | 郑弘� | Colour corundum bricks for sideway |
| WO2010115482A1 (en) * | 2009-04-09 | 2010-10-14 | Märkisches Werk GmbH | Method for repairing worn valve spindles |
| CN101648792A (en) * | 2009-06-29 | 2010-02-17 | 上海东升新材料有限公司 | Protecting mortar of express highway roadbed surface hard-face terrace |
| CN102060479A (en) * | 2009-11-16 | 2011-05-18 | 中冶建筑研究总院有限公司 | Ultrahigh-strength wear-resisting plate with cement base and production method thereof |
| CN202074182U (en) * | 2011-05-17 | 2011-12-14 | 赵宁 | Wear-resistant ceramic coating with integral structure |
| KR101288339B1 (en) * | 2011-06-30 | 2013-07-22 | 대형환경 주식회사 | Waste concrete powder and products using the same |
| US20130156555A1 (en) * | 2011-12-15 | 2013-06-20 | General Electric Company | Braze materials, brazing processes, and components with wear-resistant coatings formed thereby |
| KR101164623B1 (en) * | 2012-04-23 | 2012-07-11 | 우리건설 주식회사 | Mortar composition for repairing concrete structure and using method thereof |
| CN102718448A (en) * | 2012-04-28 | 2012-10-10 | 深圳市爱思宝科技发展有限公司 | Glaze and method for forming glaze layer |
| CN103102173A (en) * | 2013-01-18 | 2013-05-15 | 深圳市爱思宝科技发展有限公司 | Preparation method for glaze surface layer |
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Application publication date: 20140402 |