CN103553382A - Bleaching and cooling device and bleaching and cooling process for white cement clinker - Google Patents
Bleaching and cooling device and bleaching and cooling process for white cement clinker Download PDFInfo
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- CN103553382A CN103553382A CN201310468349.3A CN201310468349A CN103553382A CN 103553382 A CN103553382 A CN 103553382A CN 201310468349 A CN201310468349 A CN 201310468349A CN 103553382 A CN103553382 A CN 103553382A
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- white cement
- cooling water
- cement clinker
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Abstract
The invention provides a bleaching and cooling device and a bleaching and cooling process for white cement clinker. The device comprises a cooling water tank arranged below a discharge outlet of a rotary kiln and a scraper conveyer used for lifting white cement clinker in the cooling water tank out from the cooling water tank. Through controlling the conveying speed of the scraper conveyer, cooling time of the white cement clinker falling into the cooling water tank in cooling water is 5 to 10 min, and water velocity in a cooling water inlet pipe is 5 to 10 times of water velocity in a cooling water outlet pipe. According to the invention, running water is used for bleaching and cooling the white cement clinker, the white cement clinker is allowed to fully contact with cooling water in the cooling water tank through limitation of the conveying speed of the scraper conveyer, so air is isolated for cooling and bleaching; the whiteness of white cement treated by using the process is identical to the whiteness of white cement treated by using a soaking mode, and the process has the advantages of higher treatment efficiency, conservation of cooling water and reduction in loss of powdery white cement.
Description
Technical field
The present invention relates to white cement production field, specifically a kind of white cement clinker bleaching refrigerating unit and bleaching process for cooling.
Background technology
White cement is the abbreviation of white portland cement, with the raw material of proper composition, burns to partial melting, and the Calucium Silicate powder that is able to is main component, and the poor grog of irony adds appropriate gypsum, the levigate white hydraulic cementing materials of making.Under hot conditions, the ferrous iron in white cement clinker can be oxidized to ferric iron, due to trivalent sheet iron strip color, can reduce the quality of white cement, and therefore, the white cement clinker of production need to be bleached as soon as possible and be cooling.
In prior art, from rotary kiln white cement clinker out, preferably adopt the method realization bleaching that water drenches and water logging combines cooling: i.e. just one-Step bleach is cooling in first process cool water shower realization of white cement clinker, and then bleaches cooling with water logging.So not only strengthened water coolant consumption, cause the loss of white cement powder, and also more complicated of equipment, covert raising production cost.
Summary of the invention
In order to solve, available technology adopting water drenches and water logging combines realizes the problems such as the cement powders existing in white cement clinker bleaching process for cooling runs off, cooling-water consumption is large, the invention provides a kind of white cement clinker bleaching refrigerating unit and bleaching process for cooling.
The present invention solves the problems of the technologies described above the technical scheme of employing to be: a kind of white cement clinker bleaching refrigerating unit, comprise and be arranged on the cooling trough of rotary kiln discharge port below and for the white cement clinker in cooling trough being lifted out to the scraper conveyor of cooling trough, the bottom angled setting of described cooling trough, the its lowest position of cooling trough bottom is provided with cooling water inlet pipe, and the top of a side relative with cooling water inlet pipe is provided with the cooling water outlet pipe that caliber is greater than cooling water inlet pipe caliber.
Bottom described cooling trough is 10 ° ~ 30 °, is preferably 15 ° ~ 18 °.
The wall of described cooling trough is covered with projection and depression.
The wall of described cooling trough is covered with projection and depression, and cooling water inlet pipe and scraper conveyor least significant end in non-over against position.
Utilize described white cement clinker bleaching refrigerating unit to bleach cooling technique to white cement clinker, by controlling white cement clinker cooling time in water coolant that the transfer rate of scraper conveyor makes to drop in cooling trough, be 5 ~ 10min, simultaneously, by limit the caliber of cooling water inlet pipe and cooling water outlet pipe than and the power of water pump, make flow velocity in cooling water inlet pipe be flow velocity in cooling water outlet pipe 5-10 doubly.
In the present invention, the caliber of described cooling water inlet pipe is much smaller than the caliber of cooling water outlet pipe, and while making like this in cooling trough water balance, the flow velocity of water inlet is much larger than the flow velocity of draining, thereby realizes technique effect of the present invention.
Beneficial effect: the present invention compares with technique with existing white cement clinker bleaching refrigerating unit, has the following advantages:
1) processing that the water that adopts mobile water soaking cooling white cements clinker to replace prior art drenches and immersion combines, has not only saved a large amount of water coolants, and has reduced the loss of white cement powder;
2) cooling trough bottom angled of the present invention arranges, and in lower-most point, cooling water inlet pipe is set, and water coolant impacts and in the bottom of cooling trough, forms eddy current upwards the white cement powder depositing bottom cooling trough is rolled and dropped on the conveying belt of scraper conveyor;
3) wall of cooling trough of the present invention is covered with projection and depression, makes water in cooling trough in sinuous flow state, prevents that to greatest extent white cement powder is deposited on bottom of gullet;
4) because the admission velocity of water coolant in the present invention is much larger than the velocity of discharge, make the flow velocity of cooling trough bottom obviously be greater than the draining flow velocity at top, the powder of not falling on scraper conveyor conveying belt can be by the current band screw clamp top of tank bottom, but the flow velocity on tank top is approximately equal to drainage speed, slower, can, so that powder sinks, avoid discharging cooling trough with water coolant and cause powder to run off;
5) to adopt running water to bleach white cement clinker cooling in the present invention, by limiting the transfer rate of scraper conveyor, white cement clinker is fully contacted in cooling trough with water coolant, that thereby isolated air carries out is cooling, realize bleaching process, the whiteness of the white cement clinker of processing through the present invention is suitable with the white cement whiteness that first pouring adopts immersion way to process again through water, but processing efficiency of the present invention is higher, and has saved water coolant, reduced the loss of white cement powder.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Reference numeral: 1, cooling trough, 2, scraper conveyor, 3, cooling water inlet pipe, 4, cooling water outlet pipe, 5, rotary kiln.
Embodiment
As shown in the figure, a kind of white cement clinker bleaching refrigerating unit, comprise and be arranged on the cooling trough 1 of rotary kiln 5 discharge ports belows and for the white cement clinker in cooling trough 1 being lifted out to the scraper conveyor 2 of cooling trough 1, the bottom angled setting of described cooling trough 1, the its lowest position of cooling trough 1 bottom is provided with cooling water inlet pipe 3, and the top of a side relative with cooling water inlet pipe 3 is provided with the cooling water outlet pipe 4 that caliber is greater than cooling water inlet pipe 3 calibers.
Be more than basic embodiment of the present invention, can on above basis, do further improvement:
As, the angle of inclination of cooling trough 1 bottom, for being 10 ° ~ 30 °, is preferably 15 ° ~ 18 °;
As, the wall of cooling trough 1 is covered with projection and depression;
At the wall of cooling trough 1, be covered with on the basis of projection and depression, make cooling water inlet pipe 3 with scraper conveyor 2 least significant ends in non-over against position, that is to say, when arranging, can not make the water coolant that enters cooling trough 1 directly impact scraper conveyor 2.
Utilize above-mentioned white cement clinker bleaching refrigerating unit to bleach cooling technique to white cement clinker, by controlling white cement clinker cooling time in water coolant that the transfer rate of scraper conveyor 2 makes to drop in cooling trough 1, be 5 ~ 10min, simultaneously, by limit the caliber of cooling water inlet pipe 3 and cooling water outlet pipe 4 than and the power of water pump, make flow velocity in cooling water inlet pipe 3 be flow velocity in cooling water outlet pipe 4 5-10 doubly.
Claims (5)
1. a white cement clinker is bleached refrigerating unit, it is characterized in that: comprise being arranged on the cooling trough (1) of rotary kiln (5) discharge port below and for the white cement clinker in cooling trough (1) being lifted out to the scraper conveyor (2) of cooling trough (1), the bottom angled setting of described cooling trough (1), the its lowest position of cooling trough (1) bottom is provided with cooling water inlet pipe (3), and the top of a side relative with cooling water inlet pipe (3) is provided with the cooling water outlet pipe (4) that caliber is greater than cooling water inlet pipe (3) caliber.
2. a kind of white cement clinker bleaching refrigerating unit according to claim 1, is characterized in that: the angle of inclination of described cooling trough (1) bottom is 10 ° ~ 30 °.
3. a kind of white cement clinker bleaching refrigerating unit according to claim 1 and 2, is characterized in that: the wall of described cooling trough (1) is covered with projection and depression.
4. according to a kind of white cement clinker bleaching refrigerating unit described in claim 1 or 2, it is characterized in that: the wall of described cooling trough (1) is covered with projection and depression, and cooling water inlet pipe (3) and scraper conveyor (2) least significant end in non-over against position.
5. utilize the white cement clinker bleaching refrigerating unit described in claim 1 to bleach cooling technique to white cement clinker, it is characterized in that: by controlling the transfer rate of scraper conveyor (2), to make the white cement clinker cooling time in water coolant dropping in cooling trough (1) be 5 ~ 10min, simultaneously, by limit the caliber of cooling water inlet pipe (3) and cooling water outlet pipe (4) than and the power of water pump, making flow velocity in cooling water inlet pipe (3) is 5-10 times of flow velocity in cooling water outlet pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310468349.3A CN103553382B (en) | 2013-10-10 | 2013-10-10 | Bleaching and cooling device and bleaching and cooling process for white cement clinker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310468349.3A CN103553382B (en) | 2013-10-10 | 2013-10-10 | Bleaching and cooling device and bleaching and cooling process for white cement clinker |
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| Publication Number | Publication Date |
|---|---|
| CN103553382A true CN103553382A (en) | 2014-02-05 |
| CN103553382B CN103553382B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310468349.3A Expired - Fee Related CN103553382B (en) | 2013-10-10 | 2013-10-10 | Bleaching and cooling device and bleaching and cooling process for white cement clinker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108017294A (en) * | 2018-01-31 | 2018-05-11 | 江西银杉白水泥有限公司 | A kind of white cement bleaching machine |
| CN108101398A (en) * | 2018-01-31 | 2018-06-01 | 江西银杉白水泥有限公司 | A kind of uniform cement bleaching machine of bleaching |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461645A (en) * | 1981-05-23 | 1984-07-24 | Bkmi Industrieanlagen Gmbh | Method of and apparatus for the cooling of white cement clinker |
| CN86103363A (en) * | 1985-06-15 | 1986-12-17 | 奥伦斯坦和科贝尔股份公司 | The method and apparatus of cooling white cements clinker |
| CN2146485Y (en) * | 1993-01-08 | 1993-11-17 | 付建平 | White silicate cement clinker bleaching engine |
| CN203545894U (en) * | 2013-10-10 | 2014-04-16 | 洛阳理工学院 | White cement clinker bleaching cooling device |
-
2013
- 2013-10-10 CN CN201310468349.3A patent/CN103553382B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461645A (en) * | 1981-05-23 | 1984-07-24 | Bkmi Industrieanlagen Gmbh | Method of and apparatus for the cooling of white cement clinker |
| CN86103363A (en) * | 1985-06-15 | 1986-12-17 | 奥伦斯坦和科贝尔股份公司 | The method and apparatus of cooling white cements clinker |
| DE3521586C1 (en) * | 1985-06-15 | 1989-08-31 | O & K Orenstein & Koppel Ag, 1000 Berlin | Process and equipment for cooling white cement clinker |
| KR940003468B1 (en) * | 1985-06-15 | 1994-04-22 | 오 운트 카 오렌스타인 운트 코펠 악티엔게젤샤프트 | Process and plant system for cooling white cement clinker |
| CN2146485Y (en) * | 1993-01-08 | 1993-11-17 | 付建平 | White silicate cement clinker bleaching engine |
| CN203545894U (en) * | 2013-10-10 | 2014-04-16 | 洛阳理工学院 | White cement clinker bleaching cooling device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108017294A (en) * | 2018-01-31 | 2018-05-11 | 江西银杉白水泥有限公司 | A kind of white cement bleaching machine |
| CN108101398A (en) * | 2018-01-31 | 2018-06-01 | 江西银杉白水泥有限公司 | A kind of uniform cement bleaching machine of bleaching |
| CN108101398B (en) * | 2018-01-31 | 2023-08-08 | 江西银杉白水泥股份有限公司 | Cement bleaching machine capable of uniformly bleaching |
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| CN103553382B (en) | 2015-06-10 |
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