CN1005971B - Method and device of reproducing non-staining cement - Google Patents
Method and device of reproducing non-staining cement Download PDFInfo
- Publication number
- CN1005971B CN1005971B CN86103486.4A CN86103486A CN1005971B CN 1005971 B CN1005971 B CN 1005971B CN 86103486 A CN86103486 A CN 86103486A CN 1005971 B CN1005971 B CN 1005971B
- Authority
- CN
- China
- Prior art keywords
- grog
- equipment
- water
- air
- white cement
- 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.)
- Expired
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/47—Cooling ; Waste heat management
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/51—Hydrating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/38—Arrangements of cooling devices
- F27B7/383—Cooling devices for the charge
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Furnace Details (AREA)
Abstract
The utility model relates to a method and an equipment to manufacture a white cement which is burned in a pipe-shaped rotary furnace. When the white cement is discharged out of the rotary furnace, the while cement is sprayed by water for rapidly reducing the temperature, and is then dried by air and further cooled. When spraying a clinker, a produced vapor is made not to enter the rotary furnace by a negative pressure and is guided away. In order to utilize the coarse rubbish in the clinker and not to damage the quality of the finished products, the white cement clinker (K) output from a rotary furnace (1) is classified when the water is spayed, and the coarse rubbish (G) in produced clinker is crushed; water is supplemented to spay on the crushed material (Gz) before isolated dried and cooled with the fine grain (F).
Description
The present invention relates to a kind of method and apparatus of making white cement.White cement is sintering in the tubulose converter, when it from converter is discharged time water spray cooling rapidly, then with dry air and further cooling, the water vapour that produces during the grog spray is by causing negative pressure to make it to enter to go in the converter and by carrying-off.
The method and apparatus of above-mentioned this manufacturing white cement can be indicated in DE-PS2544343.Their shortcoming is, accounting for and discharging 1% to 5% of grog total amount by converter is agglomerate, and their inside can not get rapid cooling when water spray, thereby has reduced the quality of finished product, so must be these bulks rejectings.This is not only time-consuming but also uneconomical, throws away because must consume the grog that a large amount of energy generation come out to a part.
The objective of the invention is to further develop above-mentioned these class methods and equipment, make it to utilize whole grogs and can guarantee that white cement has high quality.
Solving the characteristics that asked a question by method of the present invention is, in water spray, carry out classification from the grog of converter outlet, coarse fraction in the grog that branches away is in addition broken, the material after the fragmentation it and fine fraction is isolated dry together and cooling before replenish and spray water.
By grog being divided into fine fraction and coarse fraction, just can carry out broken and water replenishes spray to carry out the autotelic rapid cooling same with fine fraction, so the bulk in the grog partly just can not influence the quality of white cement again and can be used to coarse fraction.In addition, grog carries out classification and can also make whole grogs preceding with air handling (dry and further cooling) what and then will carry out the coarse fraction fragmentation, their temperature objectives is reduced to about 800 ℃ clearly rapidly, is the material that contains small amount of moisture so cooling air will handle.
At present owing to have thick part and will spray in the grog with excessive water, so air to be processed be the material that contains excess water all in all.So produced moist waste gas when dry and further cooling, it and the water vapour that is produced in rapid process of cooling all can not be used together again and must drain.
Because according to suggestion of the present invention, carry out only containing a spot of moisture in the material of speed after cold, so by further feature of the present invention, water vapour that produces and the mutual isolation of air that is used to cool off with dry fast cold grog are drawn respectively when each grain size category speed of grog is cold, and heated cooling air infeeds converter as secondary air.
The advantage of being brought is thus, fast cold grog approximately when 800 ℃ are cooled to 60-120 ℃ more warmed-up air be used as combustion air, so just, reclaimed institute's heat content from the grog of converter outlet, the required energy that provides of preheated burning air can reach 45% at most, so correspondingly can be provided.Therefore in order to reach the purpose of remarkable save energy, must carry out with clearly defined objective spray, and grog is beginning to make only to contain when further cooling off a spot of moisture with air according to main design philosophy of the present invention.
The equipment of implementing the inventive method comprises the tubulose converter, is connected on quench region of its back and follow-up cooling room again, and heated cooling air separates with cooled product again and drawn from cooling room again.The characteristics of present device are, in converter with the fast cooling room that separates with cooling room again is housed between the cooling room again, by causing low pressure that water vapour is drawn therefrom, adorn a gas blower at cooling room again, it with warmed-up air as combustion air for toward converter.
The advantage that has after the further improvement of equipment being done by the present invention is, can also reclaim a large amount of heats and be used for the heating flame air when simple in structure and manufacturing cost is lower.
By other characteristics of the present invention, can be provided with a stage equipment at snap-chill cabinet, it has and is used for fine-graded main spray equipment and is used for coarsely graded shredder assembly.Be equipped with in the shredder assembly back and be used to spray another spray equipment of breaked material.Since formed the compact structure form, thus the volume of equipment can be reduced, and can reduce investment cost.
Be right after in the back of converter and can install a transportation equipment that is used to adjust the outlet grog, it supplies grog to stage equipment, and can directly be discharged to the discharge pit shaft for those sintering being got very inadequate grog, so its handling equipment can drive in the wrong direction.Avoided the fine material in this case because fault and in the influence that causes its quality afterwards for the moment in the converter, because as long as make the throughput direction in the handling equipment reverse simply, just sintering can be got very inadequate grog and from the following process operation, pick out.
The present invention advises that also handling equipment is designed to can be along the impeller of both direction rotation, and the cavity between its blade is poured water and can be admitted from the grog of each grain size category of converter outlet.The grog that this structure formation has played producing from converter carries out very fast precooling effect, thereby prevents to destroy quality owing to reoxidizing.
Accompanying drawing has schematically illustrated a kind of embodiment of the invention that is used to make the equipment of white cement.
Expression is the end of tubulose converter 1 on the figure, and converter preferably can axially movable burner 2 heating by one.To impeller 4, cavity 4a's white cement clinker K that sinters in converter 1 between impeller 4 blades pours water by conduit 5 before dress grog K by ramp 3.Therefore the white cement clinker K of each grain size category that comes out from converter 1 drops on the cavity 4a between the water-filled blade, so white cement clinker is subjected to cooling rapidly immediately and avoids reoxidizing from converter 1 once coming out.
The grog that comprises each grain size category of discharging from the cavity 4a between the blade by clockwise direction rotary blade 4 is sprayed by water through a plurality of nozzles 6, and the snap-chill cabinet 7 that arrives soon after, and a stage equipment 8 is housed in snap-chill cabinet 7.Stage equipment 8 is to have the fixedly classification bar grizzl(e)y of grating 8a in the present embodiment, below fixing grating nozzle 9 is housed also.9 pairs at nozzle below stage equipment 8 the fine fraction F water spray of effusive white cement clinker, make it to continue the cooling rapidly of with clearly defined objective ground.In this case, the about 1400 ℃ white cement clinker K that discharges by converter, in the temperature of lower of snap-chill cabinet 7 rapid drawdown to about 800 ℃.
1% to 5% the coarse fraction G that still stays above the stage equipment 8 that accounts for white cement clinker K total amount arrives disintegrating apparatus 10.In disintegrating apparatus, coarse fraction G is crushed to approximately suitable with fine fraction F.From disintegrating apparatus 10 produce be broken after coarse fraction Gz arrive the bottom of snap-chill cabinet 7, and spray water by another sprinkling equipment 11 there with clearly defined objectively.Make the temperature of the coarse fraction Gz after the fragmentation also reach about 800 ℃, and do not make them contain excessive moisture.
There are the fine fraction F and the coarse fraction Gz after the fragmentation of uniform temp to be transported to again cooling room 12 together substantially, in the cooling room grid type travelling belt 13 is housed again in the present embodiment, through speed cold and coarse fraction G deliver on this travelling belt through the white cement clinker K after the fragmentation.Now, the material that is on the grid type travelling belt 13 cools off by means of at least one pressure blower 14 supplied fresh air again.Cooling air passes grid by being layered on the material on the travelling belt, and they are cooled to 60-120 ℃.At last, these materials process discharge gates 15 are from cooling room 12 discharges again.
By to water spray fast when cold white cement clinker K to converter 1 outlet carry out stage treatment, and by in disintegrating apparatus 10, the coarse fraction G that is produced being carried out fragmentation and the coarse fraction Gz after the fragmentation is replenished spray, coarse fraction G can make coarse fraction G among the white cement clinker K be subjected to and have about 800 ℃ temperature, so also can be processed into white cement and its quality of unlikely reduction with the fast deepfreeze of fine fraction F respective degrees.The fragmentation of coarse fraction G has been avoided the fully cold material of speed occurring not having, then must pick out rejecting to them in existing equipment, otherwise will reduce the quality of white cement.
The water vapour that is produced in snap-chill cabinet 7 when fine fraction F and coarse fraction G and Gz speed are cold is taken away from snap-chill cabinet 7 with a low pressure blower 16.Can avoid water vapour to enter converter 1 thus and the burden of increase converter working process.The suitable mode of snap-chill cabinet 7 usefulness is separated with cooling room 12 again.Be that the material on grid type travelling belt 13 is realized this point by partition wall 17 and snap-chill cabinet 7 lower ends in the present embodiment.Therefore can make at cooling room 12 again to be produced, heated cooling air that contains a spot of moisture taken away by low pressure blower 18 by the fast cold material of cooling, and infeeds converter 1 as the part of the combustion air of necessity.Can reclaim heat content to 45% among the white cement clinker K in this case.By with snap-chill cabinet 7 and the separated from each other and drawing-off water steam from snap-chill cabinet 7 individually of cooling room 12 again, make the secondary air of being carried by low pressure blower 18 only contain very a spot of moisture, particularly because can carry out with clearly defined objectively, so can avoid making grog to absorb excessive moisture by nozzle 6,9 and 11 waters spray white cement clinker K.For protection nozzle 9 is contained in the present embodiment in addition grating 8a below so that the nozzle protected from wear.
Will be in order to prevent from converter 1, to break down fully agglomerating white cement clinker K transport to snap-chill cabinet 7 and therefore carry out follow-up processing, impeller 4 can be done reverse rotation by transmission, the four-headed arrow in figure is represented.When the rotation of impeller inhour, will transport to discharge pit shaft 19 by the inabundant agglomerating material that ramp 3 attracts, the discharge pit shaft is contained in the next door of stage equipment 8, and waste material can be discharged through a gate 20 from discharge pit shaft 19.
Symbol table
The F fine fraction
The G coarse fraction
Coarse fraction after the Gz fragmentation
The K white cement clinker
1 tubulose converter
2 burners
3 ramps
4 impellers
Cavity between the 4a blade
5 conduits
6 nozzles
7 snap-chill cabinets
8 stage equipments
The 8a grating
9 nozzles
10 shredder assemblys
11 spray equipments
12 cooling rooms again
13 grid type travelling belts
14 pressure blowers
15 discharge gates
16 low pressure blower
17 partition walls
18 low pressure blower
19 discharge pit shafts
20 gates
Claims (4)
1, a kind of method of making white cement, in this method, after the white cement clinker of firing (K) drawn off from tubulose converter (1), sorting beading level grog (F) and coarse fraction grog (G), wherein fine fraction grog (F) direct water when sorting sprays, coarse fraction grog (G) is fragmentation water spray then at first, the water vapor that is produced when utilizing negative pressure to prevent to cool off grog (K) enters tubulose converter (1) and it is drained, the feature of this method is: drying and the further cooling process of the material (GZ) that sprayed through broken and water being made final stage together with fine fraction grog (F) with air, quenching is thick, fine fraction grog (G, the air of water vapor that is produced in the time of F) and cooling and dry quenching grog is drawn respectively, sends heated cooling air to tubulose as secondary air and changes stove (1).
2, in order to implement the equipment of the described method of claim 1, this equipment has a tubulose converter (1) and and is arranged on thereafter snap-chill cabinet (7), snap-chill cabinet (7) is in order to water quenching white cement clinker (K), in snap-chill cabinet (7), be provided with stage equipment (8), the shredder assembly (10) that has a spray equipment (9) and a broken coarse fraction grog (G) at least, and be provided with the device of water vapor being taken away by negative pressure from snap-chill cabinet (7), the feature of this equipment is to be provided with postcooling isolated with it chamber (12) in the back of snap-chill cabinet (7), in order to white cement clinker (K) is made the drying and the further cooling process of final stage with air, and available low pressure blower (18) is with the cooling air extraction in postcooling chamber (12) through heating, so that send tubulose converter (1) to used as combustion air.
3, according to the described equipment of claim 2, it is characterized in that: directly be provided with handling equipment (4) so that grog (K) evenly draws off in the back of tubulose converter (1).Handling equipment (4) transports grog (K) to stage equipment (8), but and inverted running so that the inadequate grog of roasting (K) can directly enter in the discharge pit shaft (19).
4, the described equipment of claim 3, it is characterized in that: handling equipment is the impeller (4) of two-way rotation, can water filling in the space between its blade (4a), can hold between the blade (4a) the various grades that from tubulose converter (1), draw off grog (F, G).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3521587A DE3521587C1 (en) | 1985-06-15 | 1985-06-15 | Process and system for producing white cement |
| DEP3521587.9 | 1985-06-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86103486A CN86103486A (en) | 1986-12-10 |
| CN1005971B true CN1005971B (en) | 1989-12-06 |
Family
ID=6273429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86103486.4A Expired CN1005971B (en) | 1985-06-15 | 1986-05-22 | Method and device of reproducing non-staining cement |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR870000260A (en) |
| CN (1) | CN1005971B (en) |
| DE (1) | DE3521587C1 (en) |
| IN (1) | IN164458B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2050603B1 (en) * | 1992-06-25 | 1994-12-16 | Low Water Binder Sa | MANUFACTURING PROCEDURE FOR A DECORATIVE BINDER WITH LOW WATER DEMAND. |
| DE4414292A1 (en) * | 1994-04-23 | 1995-10-26 | Krupp Foerdertechnik Gmbh | Process and plant for cooling white cement clinker |
| CN104529203A (en) * | 2014-12-12 | 2015-04-22 | 中材装备集团有限公司 | Method for stepwise cooling cement clinker |
| CN104446823B (en) * | 2014-12-22 | 2017-10-10 | 天津水泥工业设计研究院有限公司 | A kind of silicon-calcium-potafertilizer fertilizer cooling technique and equipment |
| CN104949537B (en) * | 2015-07-22 | 2017-07-14 | 安徽工业大学 | A kind of pellet calcination rotary kiln product waste heat direct absorbing type recovery system |
| DE102016207720A1 (en) * | 2016-05-04 | 2017-11-09 | Thyssenkrupp Ag | Process and plant for the production of cement |
| DE102018108802B3 (en) | 2018-04-13 | 2019-09-12 | Khd Humboldt Wedag Gmbh | Plant for the selective production of cement clinker for gray or white cement |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1301758A (en) * | 1971-03-27 | 1973-01-04 | ||
| US3922797A (en) * | 1973-01-30 | 1975-12-02 | Fuller Co | Method for cooling hot particulate material |
| GB1434339A (en) * | 1974-10-03 | 1976-05-05 | Smidth & Co As F L | Coolers for cooling granular or pulverous material |
| DE3120683C2 (en) * | 1981-05-23 | 1985-04-11 | BKMI Industrieanlagen GmbH, 8000 München | Device for cooling burnt white cement clinker |
-
1985
- 1985-06-15 DE DE3521587A patent/DE3521587C1/en not_active Expired
-
1986
- 1986-04-30 IN IN388/DEL/86A patent/IN164458B/en unknown
- 1986-05-22 CN CN86103486.4A patent/CN1005971B/en not_active Expired
- 1986-06-14 KR KR1019860004736A patent/KR870000260A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| KR870000260A (en) | 1987-02-17 |
| DE3521587C1 (en) | 1989-02-02 |
| CN86103486A (en) | 1986-12-10 |
| IN164458B (en) | 1989-03-18 |
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| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |