CN215975563U - Grinding and homogenizing system for cement raw meal - Google Patents

Grinding and homogenizing system for cement raw meal Download PDF

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Publication number
CN215975563U
CN215975563U CN202122110665.6U CN202122110665U CN215975563U CN 215975563 U CN215975563 U CN 215975563U CN 202122110665 U CN202122110665 U CN 202122110665U CN 215975563 U CN215975563 U CN 215975563U
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conveying cylinder
raw material
dust
homogenizing
air
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CN202122110665.6U
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张正华
田宇浩
覃士烟
李祥林
雷波
肖杰
周传鑫
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Yichang Junwang Group Cement Co ltd
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Yichang Junwang Group Cement Co ltd
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Abstract

The utility model provides a grinding and homogenizing system for cement raw materials, which comprises a raw material conveyer belt for feeding the raw materials, wherein the tail end of the raw material conveyer belt is connected with a feed inlet of a raw material mill, and a discharge outlet of the raw material mill is provided with a circulating mill system; the circulating mill system is connected with a main conveying cylinder, the tail end of the main conveying cylinder is connected with a rotary feeder through a second elevator, the rotary feeder is arranged right above a raw material homogenizing warehouse, a batching valve is installed at the bottom end of the raw material homogenizing warehouse, a discharge port of the batching valve is in butt joint with a final-stage conveying cylinder, and the other end of the final-stage conveying cylinder is connected with a clinker firing production line. The system can be used for grinding and refining the prepared raw materials again, homogenizing the raw materials, and finally conveying the raw materials to the clinker preparation system for firing the clinker, so that the efficiency and the quality of the subsequent firing of the clinker are ensured.

Description

Grinding and homogenizing system for cement raw meal
Technical Field
The utility model relates to the field of cement production equipment, in particular to a grinding and homogenizing system for cement raw meal.
Background
In the cement production process, the first procedure is to prepare raw materials, then calcine the prepared raw materials to prepare cement clinker, and then complete the preparation of cement after subsequent grinding and additive addition. The above-mentioned prior art preparation process has problems in that the prepared raw material may have larger particle ore particles, which in turn results in higher temperature and longer firing time required in the subsequent firing process, increases energy consumption to some extent, and seriously affects firing efficiency. Subsequent clinker preparation is facilitated if the prepared raw meal can be initially comminuted and homogenized.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects of the prior art and provides a grinding and homogenizing system for cement raw meal, which can grind and refine the prepared raw meal again, homogenize the refined raw meal, and finally convey the refined raw meal to a clinker preparation system for firing the clinker, thereby ensuring the efficiency and quality of the subsequent firing of the clinker.
In order to achieve the technical features, the utility model is realized as follows: the grinding and homogenizing system for cement raw material includes raw material conveying belt with end connected to the material inlet of the raw material mill and material outlet with circular mill system; the circulating mill system is connected with a main conveying cylinder, the tail end of the main conveying cylinder is connected with a rotary feeder through a second elevator, the rotary feeder is arranged right above a raw material homogenizing warehouse, a batching valve is installed at the bottom end of the raw material homogenizing warehouse, a discharge port of the batching valve is in butt joint with a final-stage conveying cylinder, and the other end of the final-stage conveying cylinder is connected with a clinker firing production line.
The raw material mill is provided with a bag type dust removal system for removing dust, the bag type dust removal system comprises a bag type dust remover, a dust inlet of the bag type dust remover is connected with a main dust suction pipe, the main dust suction pipe is connected with a first dust suction pipe, the bottom end of the first dust suction pipe is connected with a dust suction cover, the dust suction cover is arranged right above a discharge hole, an air outlet of the bag type dust remover is connected with a dust removal fan, and an air outlet of the dust removal fan is connected with a dust exhaust chimney; the ash falling port of the bag type dust collector is connected with a recovery system for recovering the powder.
The recovery system comprises a feed back conveying belt arranged at a blanking port of the bag type dust collector, the tail end of the feed back conveying belt is connected with a first air conveying cylinder, a first air blower is installed at the end of the first air conveying cylinder, the tail end of the first air conveying cylinder is connected with a second air conveying cylinder, and a plurality of second air blowers are arranged at different positions of the second air conveying cylinder.
And a first cyclone dust collector is arranged at the discharge hole of the first air conveying cylinder.
The circulating mill system comprises a first elevator, a bottom feed inlet of the first elevator is in butt joint with a discharge outlet, a top discharge outlet of the first elevator is connected with an inlet of a three-way reversing valve, one discharge outlet of the three-way reversing valve is connected with a feed-back conveying cylinder, and a discharge outlet of the feed-back conveying cylinder is in butt joint with the feed inlet; the other discharge port of the three-way reversing valve is connected with the inlet of the main conveying cylinder.
The top of the raw material homogenizing warehouse is provided with a second cyclone dust collector for dust removal, and the discharge hole of the final-stage conveying cylinder is provided with a third cyclone dust collector.
The utility model discloses a spray humidification system, including humidification tower, spray humidification system, feed inlet place position is provided with the spray humidification system who is used for the spraying humidification, spray humidification system includes humidification tower, be connected with the fog draught fan through communicating pipe on the lateral wall of humidification tower, the air outlet of fog draught fan is linked together through humidifying pipe and feed inlet.
The humidifying pipe is provided with a first control valve and a second control valve, the humidifying pipe between the first control valve and the second control valve is connected with a main dust suction pipe of the bag-type dust removal system, the main dust suction pipe is provided with a third control valve, and the third control valve is arranged in front of the first dust suction pipe.
And a drain pipe is arranged at the bottom of the humidifying tower.
The utility model has the following beneficial effects:
1. the system can be used for grinding and refining the prepared raw materials again, homogenizing the raw materials, and finally conveying the raw materials to the clinker preparation system for firing the clinker, so that the efficiency and the quality of the subsequent firing of the clinker are ensured.
2. The bag type dust removal system can be used for effectively absorbing dust generated in the raw material grinding process, so that the purpose of dust removal is achieved, and the purpose of environmental protection is achieved.
3. The recovery system can recover the dust after dust removal so as to achieve the purpose of resource recycling.
4. The circulation grinding system can realize circulation grinding of raw materials, so that the raw materials can reach the required particle size.
5. The second cyclone dust collector and the third cyclone dust collector can achieve good cyclone dust collection effect.
6. The preliminary humidification technology of raw meal milling can be realized through the spray humidification system.
7. The first control valve and the second control valve can be used for humidification control for controlling humidification.
Drawings
The utility model is further illustrated by the following figures and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: the device comprises a raw material conveying belt 1, a feeding hole 2, a raw material mill 3, a discharging hole 4, a return conveying cylinder 5, a humidifying pipe 6, a first dust suction pipe 7, a three-way reversing valve 8, a first lifting machine 9, a second control valve 10, a first control valve 11, a third control valve 12, a main dust suction pipe 13, a bag type dust collector 14, a dust removal fan 15, a dust exhaust chimney 16, a return conveying belt 17, a first air conveying cylinder 18, a first air conveying fan 19, a first cyclone dust collector 20, a second air conveying fan 21, a second humidifying conveying cylinder 22, a main conveying cylinder 23, a mist induced draft fan 24, a tower 25, a blow-off pipe 26, a second lifting machine 27, a second cyclone dust collector 28, a rotary feeder 29, a raw material warehouse 30, a proportioning valve 31, a final-stage conveying cylinder 32 and a third cyclone homogenizing dust collector 33.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, a grinding and homogenizing system for cement raw meal comprises a raw meal conveyer belt 1 for feeding raw meal, wherein the tail end of the raw meal conveyer belt 1 is connected with a feed inlet 2 of a raw meal mill 3, and a discharge outlet 4 of the raw meal mill 3 is provided with a circulating mill system; the circulating mill system is connected with a main conveying cylinder 23, the tail end of the main conveying cylinder 23 is connected with a rotary feeder 29 through a second elevator 27, the rotary feeder 29 is arranged right above a raw material homogenizing warehouse 30, a batching valve 31 is installed at the bottom end of the raw material homogenizing warehouse 30, a discharge port of the batching valve 31 is in butt joint with a final-stage conveying cylinder 32, and the other end of the final-stage conveying cylinder 32 is connected with a clinker firing production line. The system can be used for grinding and refining the prepared raw materials again, homogenizing the raw materials, and finally conveying the raw materials to the clinker preparation system for firing the clinker, so that the efficiency and the quality of the subsequent firing of the clinker are ensured. In the specific preparation process, the raw material is conveyed to the interior of the raw material mill 3 for re-grinding until the set particle size is reached and then conveyed to the raw material homogenizing silo 30 for homogenizing treatment.
Further, a bag type dust removal system for dust removal is mounted on the raw mill 3, the bag type dust removal system comprises a bag type dust remover 14, a dust inlet of the bag type dust remover 14 is connected with a main dust suction pipe 13, the main dust suction pipe 13 is connected with a first dust suction pipe 7, the bottom end of the first dust suction pipe 7 is connected with a dust suction cover, the dust suction cover is arranged right above the discharge port 4, an air outlet of the bag type dust remover 14 is connected with a dust removal fan 15, and an air outlet of the dust removal fan 15 is connected with a dust exhaust chimney 16; the dust falling port of the bag house 14 is connected to a recovery system for recovering the powder. The bag type dust removal system can be used for effectively absorbing dust generated in the raw material mill 3 process, so that the purpose of dust removal is achieved, and the purpose of environmental protection is achieved. In the specific working process, the negative pressure is generated on the bag type dust collector 14 through the dust removing fan 15, and then the dust generated at the raw material mill 3 is absorbed through the main dust absorption pipe 13 and the first dust absorption pipe 7, and the dust is removed through the bag type dust collector 14.
Further, the recovery system comprises a feed back conveyer belt 17 arranged at a blanking port of the bag type dust collector 14, the tail end of the feed back conveyer belt 17 is connected with a first air supply cylinder 18, a first air blower 19 is installed at the end of the first air supply cylinder 18, the tail end of the first air supply cylinder 18 is connected with a second air supply cylinder 22, and a plurality of second air blowers 21 are arranged at different positions of the second air supply cylinder 22. The recovery system can recover the dust after dust removal so as to achieve the purpose of resource recycling. During the operation, after a certain amount of dust is accumulated in the bag-type dust collector 14, the dust is discharged to the feed-back conveyer 17 through back blowing and is discharged.
Further, a first cyclone dust collector 20 is arranged at the discharge port of the first pneumatic conveying cylinder 18. The cyclone dust removing effect is excellent by the first cyclone dust collector 20 described above.
Further, the circulating mill system comprises a first elevator 9, a feed port at the bottom of the first elevator 9 is in butt joint with a discharge port 4, a discharge port at the top of the first elevator 9 is connected with an inlet of a three-way reversing valve 8, one discharge port of the three-way reversing valve 8 is connected with a return conveying cylinder 5, and a discharge port of the return conveying cylinder 5 is in butt joint with a feed port 2; the other discharge port of the three-way reversing valve 8 is connected with the inlet of the main conveying cylinder 23. The circulation grinding system can realize circulation grinding of raw materials, so that the raw materials can reach the required particle size. In the course of the work, will enter into first lifting machine 9 through the raw meal that raw meal ground 3 preliminary ground, promote through first lifting machine 9 and enter into three-way switching-over valve 8, the rethread three-way switching-over valve 8 enters into feed back feed cylinder 5 to enter into feed inlet 2 through feed back feed cylinder 5, and enter into raw meal again and grind 3 and carry out the crocus, discharge after satisfying the particle size requirement.
Further, a second cyclone 28 for dust removal is provided at the top of the raw meal homogenizing silo 30, and a third cyclone 33 is provided at the discharge port of the final stage conveying cylinder 32. The second cyclone collector 28 and the third cyclone collector 33 can provide a good cyclone dust removing effect.
Further, 2 position in feed inlet are provided with the spraying humidification system who is used for the spraying humidification, spraying humidification system includes humidification tower 25, be connected with fog draught fan 24 through communicating pipe on humidification tower 25's the lateral wall, the air outlet of fog draught fan 24 is linked together through humidifying pipe 6 and feed inlet 2. The preliminary humidification technology of raw meal milling can be realized through the spray humidification system. Through inhaling the inside moisture of humidifying tower 25 fog draught fan 24, enter into feed inlet 2 through fog draught fan 24, and then realize the purpose of spraying humidification.
Further, a first control valve 11 and a second control valve 10 are arranged on the humidifying pipe 6, the humidifying pipe 6 between the first control valve 11 and the second control valve 10 is connected with a main dust suction pipe 13 of the bag-type dust removal system, a third control valve 12 is arranged on the main dust suction pipe 13, and the third control valve 12 is arranged in front of the first dust suction pipe 7. The first control valve 11 and the second control valve 10 described above can be used for humidification control for controlling humidification. And is used for controlling the communication control between the humidifying pipe and the dust suction pipe through a third control valve 12.
Further, a drain pipe 26 is arranged at the bottom of the humidifying tower 25. Can be used for blowdown of the humidifying tower 25 through a blowdown pipe 26.
The working process and principle of the utility model are as follows:
firstly, raw materials are sent to a raw material mill 3 through a raw material conveyer belt 1 for milling, after milling is completed, the raw materials primarily milled enter a first hoister 9, are hoisted by the first hoister 9 to enter a three-way reversing valve 8, enter a return material conveying cylinder 5 through the three-way reversing valve 8, enter a feed inlet 2 through the return material conveying cylinder 5, enter the raw material mill 3 again for milling until the particle size requirement is met, are discharged, are sent to a main conveying cylinder 23, are sent to a second hoister 27 through the main conveying cylinder 23, are conveyed to a raw material homogenizing warehouse 30 through the second hoister 27, are homogenized through the raw material homogenizing warehouse 30, and are connected with a clinker firing production line through the other end of a final-stage conveying cylinder 32 after homogenization is completed; during the production process, negative pressure is generated on the bag type dust collector 14 through the dust removal fan 15, and then dust generated at the raw material mill 3 is absorbed through the main dust absorption pipe 13 and the first dust absorption pipe 7 and is removed through the bag type dust collector 14; and the moisture enters the feed inlet 2 through the mist induced draft fan 24, thereby realizing the purpose of spraying and humidifying.

Claims (9)

1. Grinding homogenization system of cement raw meal, its characterized in that: the device comprises a raw material conveyer belt (1) for feeding raw materials, wherein the tail end of the raw material conveyer belt (1) is connected with a feeding hole (2) of a raw material mill (3), and a discharge hole (4) of the raw material mill (3) is provided with a circulating mill system; the circulating mill system is connected with a main conveying cylinder (23), the tail end of the main conveying cylinder (23) is connected with a rotary feeder (29) through a second lifting machine (27), the rotary feeder (29) is arranged right above a raw material homogenizing warehouse (30), a batching valve (31) is installed at the bottom end of the raw material homogenizing warehouse (30), a discharge port of the batching valve (31) is in butt joint with a final-stage conveying cylinder (32), and the other end of the final-stage conveying cylinder (32) is connected with a clinker firing production line.
2. The system for homogenizing ground cement as claimed in claim 1, wherein: the raw material mill (3) is provided with a bag type dust removal system for dust removal, the bag type dust removal system comprises a bag type dust remover (14), a dust inlet of the bag type dust remover (14) is connected with a main dust suction pipe (13), the main dust suction pipe (13) is connected with a first dust suction pipe (7), the bottom end of the first dust suction pipe (7) is connected with a dust suction cover, the dust suction cover is arranged right above a discharge hole (4), an air outlet of the bag type dust remover (14) is connected with a dust removal fan (15), and an air outlet of the dust removal fan (15) is connected with a dust exhaust chimney (16); the ash falling port of the bag-type dust collector (14) is connected with a recovery system for recovering powder.
3. The system for homogenizing ground cement as claimed in claim 2, wherein: the recycling system comprises a feed back conveying belt (17) arranged at a blanking port of the bag type dust collector (14), the tail end of the feed back conveying belt (17) is connected with a first air conveying cylinder (18), a first air blower (19) is installed at the end of the first air conveying cylinder (18), the tail end of the first air conveying cylinder (18) is connected with a second air conveying cylinder (22), and a plurality of second air blowers (21) are arranged at different positions of the second air conveying cylinder (22).
4. A grinding homogenization system for cement raw meal as set forth in claim 3, wherein: a first cyclone dust collector (20) is arranged at the discharge hole of the first air supply cylinder (18).
5. The system for homogenizing ground cement as claimed in claim 1, wherein: the circulating mill system comprises a first elevator (9), a feed port at the bottom of the first elevator (9) is in butt joint with a discharge port (4), a discharge port at the top of the first elevator (9) is connected with an inlet of a three-way reversing valve (8), one discharge port of the three-way reversing valve (8) is connected with a feed back conveying cylinder (5), and a discharge port of the feed back conveying cylinder (5) is in butt joint with a feed port (2); the other discharge hole of the three-way reversing valve (8) is connected with the inlet of the main conveying cylinder (23).
6. The system for homogenizing ground cement as claimed in claim 1, wherein: the top of the raw material homogenizing storehouse (30) is provided with a second cyclone dust collector (28) for dust removal, and the discharge hole of the final-stage conveying cylinder (32) is provided with a third cyclone dust collector (33).
7. The system for homogenizing ground cement as claimed in claim 1, wherein: feed inlet (2) position is provided with the spraying humidification system who is used for the spraying humidification, spraying humidification system includes humidification tower (25), be connected with fog draught fan (24) through communicating pipe on the lateral wall of humidification tower (25), the air outlet of fog draught fan (24) is linked together through humidifying pipe (6) and feed inlet (2).
8. The system for homogenizing ground cement as claimed in claim 7, wherein: the humidifying device is characterized in that a first control valve (11) and a second control valve (10) are arranged on the humidifying pipe (6), the humidifying pipe (6) located between the first control valve (11) and the second control valve (10) is connected with a main dust suction pipe (13) of the bag type dust removal system, a third control valve (12) is arranged on the main dust suction pipe (13), and the third control valve (12) is arranged in front of the first dust suction pipe (7).
9. The system for homogenizing ground cement as claimed in claim 7, wherein: and a drain pipe (26) is arranged at the bottom of the humidifying tower (25).
CN202122110665.6U 2021-09-02 2021-09-02 Grinding and homogenizing system for cement raw meal Active CN215975563U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122110665.6U CN215975563U (en) 2021-09-02 2021-09-02 Grinding and homogenizing system for cement raw meal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122110665.6U CN215975563U (en) 2021-09-02 2021-09-02 Grinding and homogenizing system for cement raw meal

Publications (1)

Publication Number Publication Date
CN215975563U true CN215975563U (en) 2022-03-08

Family

ID=80521563

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122110665.6U Active CN215975563U (en) 2021-09-02 2021-09-02 Grinding and homogenizing system for cement raw meal

Country Status (1)

Country Link
CN (1) CN215975563U (en)

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