CN214537268U - Device for pre-drying high-humidity material by using tail gas waste heat of dry-process ball mill - Google Patents
Device for pre-drying high-humidity material by using tail gas waste heat of dry-process ball mill Download PDFInfo
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- CN214537268U CN214537268U CN202120554996.6U CN202120554996U CN214537268U CN 214537268 U CN214537268 U CN 214537268U CN 202120554996 U CN202120554996 U CN 202120554996U CN 214537268 U CN214537268 U CN 214537268U
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Abstract
The utility model provides an utilize high wet material device of dry process ball mill tail gas used heat predrying, includes feed bin (1), conveyer belt (2), tubaeform mouth of blowing (3), ball mill (4), grader (5), cyclone collector (6), sack cleaner (7), draught fan (8), air compressor machine (9), pipeline (10) and amount of wind valve (11). The induced draft fan is connected with the horn-shaped air blowing opening through the air volume valve through a conveying pipeline, and blows high-temperature tail gas led from the bag-type dust collector to the material to pre-dry the high-humidity material. The utility model discloses the device utilizes dry process ball mill tail gas used heat predrying high water content material can realize the high-valued utilization of dry process ball mill tail gas used heat, and predrying material moisture reduces the material water content, avoids high wet material paste ball, the jam problem in the ore grinding operation, guarantees the continuous stable production of ball mill, realizes ball mill energy saving and consumption reduction, gains good economic benefits.
Description
Technical Field
The utility model relates to an utilize high wet material device of dry process ball mill tail gas used heat predrying belongs to energy comprehensive utilization technical field.
Background
The ball mill is the key equipment that carries out regrinding after the industrial material breakage, and the application field of ball mill is very wide, and as the professional equipment of ore crocus processing, the ball mill has very important position in ore crocus processing operation work. According to the operation process, the method can be divided into dry ball milling and wet ball milling. The dry ball milling production system generally comprises a ball mill, a separator, a powder concentrator (classifier), a dust remover and the like. When wind power discharge is started, the interior of the ball mill is at low negative pressure, the ground materials enter a pipeline system from a discharge port along with wind power, the powder concentrator separates coarse particles and returns to the feed port of the ball mill again, the ground materials are separated and collected by the separator, and tail gas is discharged into air after passing through the bag-type dust collector.
The high-humidity ore grinding raw materials in the operation of the dry ball mill influence the yield benefit and the power consumption cost. Generally, the yield of the mill is reduced by 8% -10% for every 1% increase of the moisture of the raw materials entering the mill, and when the moisture is more than 5%, the dry ball mill can not perform grinding operation basically. Therefore, the negative effects caused by the treatment of high-humidity raw materials are avoided as much as possible, and the drying equipment is matched with the ball milling machine to carry out pre-drying and water removal treatment on the raw materials before the ball milling operation.
On the other hand, the energy ratio of the actual crushing and grinding of the ball mill during operation is low, most energy is lost in a friction heat generation mode, the temperature of tail gas is 40-60 ℃, and the part of heat is wasted, so that the ball mill is not in accordance with the production concept of energy conservation and consumption reduction advocated by the current country.
Disclosure of Invention
The utility model aims at solving the problems of pre-drying and comprehensive energy utilization of the high-humidity ore grinding raw materials in the dry ball mill operation and disclosing a device for pre-drying high-humidity materials by utilizing the tail gas waste heat of the dry ball mill.
The technical scheme of the utility model is that the device for pre-drying the high-humidity material by using the waste heat of the tail gas of the dry ball mill comprises a storage bin, a conveyor belt, a ball mill, a classifier, a cyclone collector, a bag-type dust collector, an induced draft fan and an air compressor; the tail gas output end of the bag dedusting gas is conveyed to a conveying pipeline through a draught fan; the induced draft fan is connected with the horn-shaped air blowing port through a delivery pipeline and an air volume valve; the trumpet-shaped position is slightly higher than the conveying surface of the conveying belt, the air blowing port is over against the materials on the conveying belt, and high-temperature tail gas guided from the bag-type dust remover is blown to the materials.
The outlet at the lower end of the bin is connected with a conveyor belt, and the other end of the conveyor belt is connected with the feeding end of the ball mill through a pipeline; the discharge end of the ball mill is connected with a classifier through a pipeline; the classifier passes through a cyclone collector to reach a bag-type dust collector; the middle part of the bag dust removing gas is connected with an air compressor through a pipeline; the bottom of the grader is connected with the input end of the ball mill through a pipeline.
After the discharge of the ball mill is separated by the classifier, coarse particles return to the feed inlet of the ball mill again through the lower end of the classifier to be ground, and qualified products are separated and collected in the cyclone collector by the separator.
The bag-type dust collector is a pulse bag-type dust collector, and is used for filtering fine powder particles in the tail gas and purifying the tail gas.
The air compressor provides pulse air pressure for the bag-type dust collector to remove fine powder deposited on the bag in time.
The outer layer of the conveying pipeline is coated with a layer of glass wool heat-insulating material to prevent heat loss.
The beneficial effects of the utility model are that, the utility model discloses the device utilizes dry process ball mill tail gas used heat predrying high water content material can realize the high-valued utilization of dry process ball mill tail gas used heat, and predrying material moisture reduces the material water content, avoids high wet material paste ball, the jam problem in the ore grinding operation, guarantees the continuous stable production of ball mill, realizes ball mill energy saving and consumption reduction, gains good economic benefits.
Drawings
FIG. 1 is a schematic structural diagram of a device for pre-drying high-humidity materials by using waste heat of tail gas of a dry ball mill;
in the figure, 1 is a storage bin; 2 is a conveyor belt; 3 is a horn-shaped air blowing port; 4 is a ball mill; 5 is a grader; 6 is a cyclone collector; 7 is a bag-type dust collector; 8 is a draught fan; 9 is an air compressor; 10 is a conveying pipeline; and 11 is an air volume valve.
Detailed Description
The specific embodiment of the present invention is shown in fig. 1.
The embodiment provides an utilize high wet material device of dry process ball mill tail gas used heat predrying, including feed bin 1, conveyer belt 2, tubaeform mouth of blowing 3, ball mill 4, grader 5, cyclone collector 6, sack cleaner 7, draught fan 8, air compressor machine 9, pipeline 10 and amount of wind valve 11.
The induced draft fan 8 is connected with the horn-shaped air blowing port 3 through a delivery pipeline 10 and an air volume valve 11; the position of the horn-shaped air blowing port 3 is slightly higher than the conveying surface at the tail end of the conveying belt 2, the air blowing port is over against the materials on the conveying belt, and high-temperature tail gas guided from the bag-type dust collector 7 is blown to the materials.
The outlet at the lower end of the bin 1 is connected with a conveyor belt 2, and the other end of the conveyor belt is connected with the feeding end of a ball mill 4 through a pipeline; the discharge end of the ball mill 4 is connected with a classifier 5 through a pipeline; the grader 5 passes through a cyclone collector 6 to a bag-type dust collector 7; the tail gas output end of the bag dedusting gas 7 is connected to a conveying pipeline 10 through a draught fan 8; the middle part of the bag-type dust collector 7 is connected with an air compressor 9 through a pipeline; the bottom of the classifier 5 is connected with the input end of the ball mill 4 through a pipeline.
The silo 1 and the ball mill 4 of the present embodiment are made of 304 stainless steel.
The material of the conveyor belt 2 in this embodiment is silica gel, and has a certain high temperature resistance (100-.
The power of the induced draft fan 8 of the embodiment is 25 kw.
The power of the classifier 5 in this embodiment is 80kw, the discharge of the ball mill 4 is sorted by the classifier 5, the coarse particles are returned to the feed inlet of the ball mill 4 again through the lower end of the classifier 5 for regrinding, and the qualified products are separated and collected in the cyclone collector 6 by the separator.
The bag-type dust collector 7 of the embodiment is a pulse bag-type dust collector, and can filter fine powder particles in tail gas and purify the tail gas.
The air compressor 9 of this embodiment provides pulse atmospheric pressure for the sack cleaner, in time clears away the deposited fine powder on the sack, guarantees dust removal effect.
The conveying pipeline 10 of the embodiment is made of 304 stainless steel materials, and the outer layer of the pipeline is coated with a layer of glass wool heat-insulating materials to prevent heat dissipation.
The air volume valve 11 of this embodiment is made of aluminum alloy, and can adjust the air volume according to actual production conditions.
The terminal horn-shaped air blowing opening 3 that is installed to the pipeline 10 of this embodiment, the horn-shaped opening is favorable to increasing the air-out area.
According to the embodiment, the high-value utilization of the tail gas waste heat of the dry ball mill can be realized by pre-drying the high-water-content material by using the tail gas waste heat of the dry ball mill, the moisture of the pre-dried material reduces the water content of the material, the problems of ball pasting and blockage of the high-humidity material in ore grinding operation are avoided, the continuous stable production of the ball mill is ensured, the energy conservation and consumption reduction of the ball mill are realized, and good economic benefits are obtained.
Claims (6)
1. A device for pre-drying high-humidity materials by using waste heat of tail gas of a dry-method ball mill comprises a storage bin, a conveyor belt, the ball mill, a classifier, a cyclone collector, a bag-type dust collector, an induced draft fan and an air compressor; the method is characterized in that the tail gas output end of the bag dedusting gas is conveyed to a conveying pipeline through a draught fan; the induced draft fan is connected with the horn-shaped air blowing port through a delivery pipeline and an air volume valve; the trumpet-shaped position is slightly higher than the conveying surface at the tail end of the conveying belt, the air blowing port is over against the materials on the conveying belt, and high-temperature tail gas guided from the bag-type dust remover is blown to the materials.
2. The device for pre-drying the high-humidity material by using the waste heat of the tail gas of the dry ball mill according to claim 1, wherein an outlet at the lower end of the bin is connected with a conveyor belt, and the other end of the conveyor belt is connected with a feeding end of the ball mill through a pipeline; the discharge end of the ball mill is connected with a classifier through a pipeline; the classifier passes through a cyclone collector to reach a bag-type dust collector; the middle part of the bag dust removing gas is connected with an air compressor through a pipeline; the bottom of the grader is connected with the input end of the ball mill through a pipeline.
3. The device for pre-drying the high-humidity material by using the waste heat of the tail gas of the dry ball mill as claimed in claim 1, wherein the discharged material of the ball mill is sorted by the classifier, the coarse particles are returned to the feed inlet of the ball mill again through the lower end of the classifier to be ground again, and the qualified product is separated and collected in the cyclone collector by the separator.
4. The device for pre-drying the high-humidity material by using the waste heat of the tail gas of the dry ball mill according to claim 1, wherein the bag-type dust remover is a pulse bag-type dust remover, and is used for filtering fine powder particles in the tail gas and purifying the tail gas.
5. The device for pre-drying high-humidity materials by using waste heat of tail gas of the dry ball mill as claimed in claim 1, wherein the air compressor provides pulse air pressure for the bag-type dust remover to remove fine powder deposited on the bag in time.
6. The device for pre-drying high-humidity materials by using waste heat of tail gas of a dry ball mill as claimed in claim 1, wherein the outer layer of the conveying pipeline is coated with a layer of glass wool heat-insulating material to prevent heat loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120554996.6U CN214537268U (en) | 2021-03-18 | 2021-03-18 | Device for pre-drying high-humidity material by using tail gas waste heat of dry-process ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120554996.6U CN214537268U (en) | 2021-03-18 | 2021-03-18 | Device for pre-drying high-humidity material by using tail gas waste heat of dry-process ball mill |
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| Publication Number | Publication Date |
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| CN214537268U true CN214537268U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120554996.6U Active CN214537268U (en) | 2021-03-18 | 2021-03-18 | Device for pre-drying high-humidity material by using tail gas waste heat of dry-process ball mill |
Country Status (1)
| Country | Link |
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| CN (1) | CN214537268U (en) |
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2021
- 2021-03-18 CN CN202120554996.6U patent/CN214537268U/en active Active
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