CN103553382B - 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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- CN103553382B CN103553382B CN201310468349.3A CN201310468349A CN103553382B CN 103553382 B CN103553382 B CN 103553382B CN 201310468349 A CN201310468349 A CN 201310468349A CN 103553382 B CN103553382 B CN 103553382B
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- cooling
- white cement
- cooling water
- cement clinker
- bleaching
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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, and burn to partial melting with the raw material of proper composition, the Calucium Silicate powder that is able to is main component, and the poor grog of irony adds appropriate gypsum, the levigate white water hydraulic cement made.Under the high temperature 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 needs to carry out as soon as possible bleaching and cooling.
In prior art, water drenches and water logging combines method is preferably adopted to realize bleaching cooling from rotary kiln white cement clinker out: namely white cement clinker first realizes just one-Step bleach cooling through cool water shower, and then cools with water logging bleaching.So not only increase the consumption of water coolant, cause the loss of white cement powder, and equipment also more complicated, covert improves production cost.
Summary of the invention
Combine for adopting water pouring and water logging in solution prior art the problems such as cement powders runs off, cooling-water consumption is large realizing existing in white cement clinker bleaching process for cooling, the invention provides a kind of white cement clinker bleaching refrigerating unit and bleach process for cooling.
The present invention is the technical scheme solving the problems of the technologies described above employing: a kind of white cement clinker bleaching refrigerating unit, comprise and be arranged on the cooling trough below rotary kiln discharge port and the scraper conveyor for the white cement clinker in cooling trough being lifted out cooling trough, the bottom angled of described cooling trough is arranged, its lowest position bottom cooling trough is provided with cooling water inlet pipe, and the top of the 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 are in anon-normal to position.
White cement clinker bleaching refrigerating unit described in utilization carries out the technique of bleaching cooling to white cement clinker, by controlling the transfer rate of scraper conveyor, to make to drop into the time that the white cement clinker in cooling trough cools in water coolant be 5 ~ 10min, simultaneously, by limiting cooling water inlet pipe and the caliber ratio of cooling water outlet pipe and the power of water pump, make flow velocity in cooling water inlet pipe be the 5-10 of flow velocity in cooling water outlet pipe 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 when making water balance in cooling trough like this, the flow velocity of water inlet much larger than the flow velocity of draining, thus realizes technique effect of the present invention.
Beneficial effect: the present invention and existing white cement clinker are bleached refrigerating unit and compared with technique, have the following advantages:
1) process that the water adopting the water soaking cooling white cements clinker of flowing to replace prior art drenches and immersion combines, not only saves a large amount of water coolants, and decreases the loss of white cement powder;
2) cooling trough bottom angled of the present invention is arranged, and arranges cooling water inlet pipe in lower-most point, and water coolant impacts the eddy current formed upwards in the bottom of cooling trough and rolled by the white cement powder of cooling trough bottom deposit and drop on the conveying belt of scraper conveyor;
3) wall of cooling trough of the present invention is covered with projection and depression, makes the water in cooling trough be in sinuous flow state, prevents white cement powder to be deposited on bottom of gullet to greatest extent;
4) because the admission velocity of water coolant in the present invention is much larger than the velocity of discharge, the flow velocity bottom cooling trough is made obviously to be greater than the draining flow velocity at top, the powder do not fallen on scraper conveyor conveying belt can by the current band screw clamp top of tank bottom, but the flow velocity on tank top is approximately equal to drainage speed, slower, powder can be made to sink, avoid discharging cooling trough with water coolant and cause powder to run off;
5) the present invention adopts running water to carry out bleaching cooling to white cement clinker, by the transfer rate limiting scraper conveyor, white cement clinker is fully contacted in cooling trough with water coolant, thus isolated air carries out cooling, realizing bleaching process, whiteness through the white cement clinker of process of the present invention adopts the white cement whiteness of immersion way process suitable with first drenching through water again, but processing efficiency of the present invention is higher, and saves water coolant, decrease 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 below rotary kiln 5 discharge port and the scraper conveyor 2 for the white cement clinker in cooling trough 1 being lifted out cooling trough 1, the bottom angled of described cooling trough 1 is arranged, its lowest position bottom cooling trough 1 is provided with cooling water inlet pipe 3, and the top of the 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.
Be more than basic embodiment of the present invention, further improvement can be done on above basis:
As, the angle of inclination bottom cooling trough 1, for being 10 ° ~ 30 °, is preferably 15 ° ~ 18 °;
As, the wall of cooling trough 1 is covered with projection and depression;
Be covered with on basis that is protruding and that cave at the wall of cooling trough 1, make cooling water inlet pipe 3 and scraper conveyor 2 least significant end be in anon-normal to position, that is, when arranging, the water coolant entering cooling trough 1 can not be made directly to impact scraper conveyor 2.
Above-mentioned white cement clinker bleaching refrigerating unit is utilized to carry out bleaching the technique of cooling to white cement clinker, by controlling the transfer rate of scraper conveyor 2, to make to drop into the time that the white cement clinker in cooling trough 1 cools in water coolant be 5 ~ 10min, simultaneously, by limiting cooling water inlet pipe 3 and the caliber ratio of cooling water outlet pipe 4 and the power of water pump, make flow velocity in cooling water inlet pipe 3 be the 5-10 of flow velocity in cooling water outlet pipe 4 doubly.
Claims (3)
1. a white cement clinker bleaching refrigerating unit, it is characterized in that: comprise and be arranged on the cooling trough (1) below rotary kiln (5) discharge port and the scraper conveyor (2) for the white cement clinker in cooling trough (1) being lifted out cooling trough (1), the bottom angled of described cooling trough (1) is arranged, the its lowest position of cooling trough (1) bottom is provided with cooling water inlet pipe (3), and the top of the 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; 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 are in anon-normal to position.
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 10o ~ 30o.
3. utilize the white cement clinker described in claim 1 to bleach refrigerating unit to carry out white cement clinker bleaching the technique cooled, it is characterized in that: making to drop into by the transfer rate controlling scraper conveyor (2) time that the white cement clinker in cooling trough (1) cools in water coolant is 5 ~ 10min, simultaneously, by limiting cooling water inlet pipe (3) and the caliber ratio of cooling water outlet pipe (4) and the power of water pump, flow velocity in cooling water inlet pipe (3) is made to be 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103553382A CN103553382A (en) | 2014-02-05 |
| CN103553382B true CN103553382B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| CN (1) | CN103553382B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108017294B (en) * | 2018-01-31 | 2023-08-01 | 江西银杉白水泥股份有限公司 | Bleaching machine for white cement |
| 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 |
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 (5)
| 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 |
| 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 |
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| CN103553382A (en) | 2014-02-05 |
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