CN111285042A - Ultra-remote conveying method and system for aluminum oxide - Google Patents
Ultra-remote conveying method and system for aluminum oxide Download PDFInfo
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- CN111285042A CN111285042A CN201910781724.7A CN201910781724A CN111285042A CN 111285042 A CN111285042 A CN 111285042A CN 201910781724 A CN201910781724 A CN 201910781724A CN 111285042 A CN111285042 A CN 111285042A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G37/00—Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/18—Preventing escape of dust
- B65G69/185—Preventing escape of dust by means of non-sealed systems
- B65G69/186—Preventing escape of dust by means of non-sealed systems with aspiration means
Abstract
The invention belongs to the technical field of conveying equipment, and particularly discloses an alumina ultra-remote large-capacity conveying method and system, wherein a conveying mode is selected according to terrain; selecting a tubular belt conveyor at a long-distance uphill section, and selecting a pneumatic chute system at a downhill section or a gentle section; selecting an air cushion belt conveyor for short-distance uphill sections or lifting requirements; a transfer station and a dust removal device are arranged at the joint of each conveying mode. The invention has the beneficial effects that: the method and the conveying system are provided, various conveying tools are comprehensively utilized, the application of the alumina powder in different terrains is realized by utilizing the combination of different characteristics of the conveying tools, the problems of ultra-long distance transportation of the alumina powder, dust raising in the transportation process and the like are solved, and the method has the characteristics of high efficiency, environmental protection, strong stability, small influence from the outside, high comprehensive cost performance and the like, and can support the requirement of large-capacity conveying.
Description
Technical Field
The invention relates to the technical field of conveying equipment, in particular to an alumina ultra-remote large-capacity conveying method and an alumina ultra-remote large-capacity conveying system.
Background
Alumina is an important industrial raw material, and is mostly transported by ships across countries or in long distances. Because the alumina is a corrosive powder which is difficult to convey, and the alumina powder is easy to leak, when a port unloads a ship, the transportation of the alumina powder by using the traditional grab bucket can hardly be realized due to the influence of factors such as sealing degree, dust, strong wind and the like. The prior method for treating alumina in port comprises the following steps: the method comprises the steps of firstly using a special alumina ship unloader to unload a ship, then filling alumina powder into a bag through filling equipment, and then conveying the alumina powder out through other transportation equipment such as trains and the like. The unloading treatment mode of the alumina has more restrictions on the geographic position of the port, the alumina collecting and distributing conditions and the alumina powder storage yard, and is only suitable for the port with all conditions in all aspects. Some ports with narrow space are not suitable for the method; in addition, some alumina processing plants or stockyard are located several kilometers away from a port, and the cost is extremely high by adopting the above method, so that the enterprise requirements cannot be met, and at present, no transportation method for the type of plant or stockyard exists. In addition, in the transport field, over 1000 meters belong to long distance remote transport promptly, at present, carry out long distance remote transport to alumina powder and adopt the mode of continuous joint in the pnematic chute to carry on, and pnematic chute conveying system requires highly to the topography, and it is extremely high to need to reform transform the cost and the construction cost in complicated section, and consequently, pnematic chute system generally uses inside the enterprise.
Disclosure of Invention
The invention aims to provide an alumina ultra-remote large-capacity conveying method which is efficient, environment-friendly, stable and low in comprehensive cost.
In order to achieve the purpose, the invention is implemented according to the following technical scheme: an alumina ultra-remote large-capacity conveying method comprises the following steps:
step 1), selecting a conveying mode according to terrain; selecting a tubular belt conveyor at a long-distance uphill section, and selecting a pneumatic chute system at a downhill section or a gentle section; selecting an air cushion belt conveyor for short-distance uphill sections or lifting requirements;
step 2), setting a transfer station; a transfer station is arranged at the joint of each conveying mode,
step 3), selecting the equipment model and power used by each transmission mode to keep the traffic volume of all the selected transmission modes consistent;
step 4), selecting a dust removal mode; the dust removal mode is that pulse bag type dust collectors are arranged at the tail part and the head part of the tubular belt conveyor and the air cushion belt conveyor, buffering air locking devices are arranged at a material receiving port and a material discharging port of the pneumatic chute system, and the buffering air locking devices are mainly used for reducing the influence of high-pressure gas in the pneumatic chute on the pulse bag type dust collectors and avoiding overlarge dust.
Preferably, the pneumatic chute system comprises chutes, the length of each section of chute is 6 m/section, the angle of the pneumatic chute system is 4 degrees, the angle of the pneumatic chute system and the length of each section of chute are limited in order to reduce the number and the length of air supply dead zones in the pneumatic chute, and the defect that the conveying capacity of the pneumatic chute is affected due to the fact that aluminum oxide cannot be liquefied in the dead zones and running resistance is large is solved.
Preferably, a grid support is arranged below a chute ventilating plate of the pneumatic chute system, the grid support provides additional support for the pneumatic chute, and the ventilating cloth on the chute ventilating plate is stabilized to be smooth and stable, so that the reduction of running resistance is facilitated, and the conveying speed is increased.
Preferably, each section of chute of the pneumatic chute system independently supplies air and independently adopts butterfly valve control, the chutes are not affected with each other, the control precision is high, the overhaul is convenient, meanwhile, the chute system is convenient to independently adjust according to the transportation amount, and the whole system is guaranteed to convey according to the rated transportation amount.
Preferably, the air volume of a fan of the pulse bag type dust collector is adjustable, and the pressure difference between the upper part and the lower part of a filter bag of the pulse bag type dust collector is 0.3-0.8 KPa. The pulse bag type dust collector is mainly used for blowing and dedusting alumina powder, and when the pulse bag type dust collector is specifically applied, the pulse bag type dust collector is supplied with air in a centralized manner by an air compression station and is used for ensuring high-frequency blowing of the pulse bag type dust collector; meanwhile, the pressure difference between the upper part and the lower part of a filter bag of the pulse bag type dust collector is maintained, the filtering air speed of the pulse bag type dust collector is ensured, and the blowing dust collection effect is not influenced.
The application also provides an alumina ultra-long-distance large-capacity conveying system set by the method. When the CCTV system is in actual use, devices such as an electric and control system, a CCTV closed circuit monitoring system, a lighting system and the like are arranged according to needs.
Compared with the prior art, the invention has the beneficial effects that: the method is provided, various conveying tools are comprehensively utilized, the application of the alumina powder in different terrains is realized by utilizing the combination of different characteristics of the conveying tools, the problems of dust emission and the like in the process of ultra-long distance transportation and transportation of the alumina powder are solved, and the method has the characteristics of high efficiency, environmental protection, strong stability, small influence from the outside, high comprehensive cost performance and the like, and can support the requirement of large-capacity transportation.
Drawings
FIG. 1 is a process flow diagram of example 1 of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
Example 1
If traditional railway transportation or vehicle transportation is adopted, an alumina powder stockpiling storage yard and a special transportation route need to be specially constructed at the port, the investment is huge, the occupied area and the pollution are more serious, and the influence factor of weather is large.
The specific scheme is shown in figure 1, the alumina ultra-long-distance large-capacity conveying method comprises the step 1) of selecting two DG type tubular belt conveyors, two sets of B800mm pneumatic chute systems and one DAC-140-II type air cushion belt conveyor according to the regional environment. As shown in table 1, the tubular belt conveyor, pneumatic chute system, air cushion belt conveyor, transfer station were set up according to the conveying distance and topography; wherein the receiving point at the tail part of the first tubular belt conveyor 1 is butted with the ship unloader, and a rainproof structure is arranged at the interface; the head of the first tubular belt conveyor 1 is butted with the tail of the second tubular belt conveyor 2 at a first transfer station 6, and a buffer structure for reducing raised dust is arranged in a blanking chute at the head of the first tubular belt conveyor 1; the second tubular belt conveyor 2 is in butt joint with the first pneumatic chute system 3 at a second transfer station 7, the first pneumatic chute system 3 is in butt joint with the air cushion belt conveyor 4 at a third transfer station 8, and the air cushion belt conveyor 4 is in butt joint with the second pneumatic chute system 5 at a fourth transfer station 9.
Step 2), setting a transfer station; a transfer station is arranged at the joint of each conveying mode,
step 3), selecting the equipment model and power used by each transmission mode as shown in the table 1, so that the operation volume of all the selected transmission modes is kept consistent and can reach 900 t/h;
step 4), selecting a dust removal mode; the dust removal mode is that pulse bag type dust collectors are arranged at the tail part and the head part of the tubular belt conveyor and the air cushion belt conveyor, buffering air locking devices are arranged at a material receiving port and a material discharging port of the pneumatic chute system, and the buffering air locking devices are mainly used for reducing the influence of high-pressure gas in the pneumatic chute on the pulse bag type dust collectors and avoiding overlarge dust.
The tubular belt conveyor is used for conveying the alumina powder for the first time, and the flexible layout, the large-inclination-angle and long-distance lifting arrangement is realized through the tubular belt conveyor, so that the redundant setting of an intermediate transfer station is reduced, and the investment and maintenance cost of corresponding auxiliary equipment are reduced; the device can be arranged according to a space curve, is not limited by terrain, is beneficial to avoiding buildings and roads on the ground, is suitable for long-distance transmission line construction under complex environments with narrow space or obstacles, uphill slopes and the like, shortens the transmission distance, thereby reducing the total construction cost of the project and being convenient to operate and manage; the characteristics of short distance downhill conveying and short distance lifting of an air cushion belt conveyor are solved by combining a pneumatic chute system, and the problem of ultra-long distance large-capacity conveying of alumina powder in rugged terrains is solved.
TABLE 1 topographic parameters of various equipments in alumina ultra-long-distance large-capacity conveying system
The alumina ultra-long-distance large-conveying-capacity conveying method adopts the following technical means in order to ensure the conveying effect and the dust removal effect.
The length of each section of the chute of the pneumatic chute system (3, 5) is 6 m/section, the length of each section of the chute is 3m far larger than that of the conventional chute, the inclination angle of the pneumatic chute system (3, 5) is set to be 4 degrees, the angle of the pneumatic chute system and the length of each section of the chute are set to reduce the number and the length of air supply dead zones in the pneumatic chute, and the defect that the conveying capacity of the pneumatic chute is affected due to the fact that aluminum oxide cannot be liquefied in the dead zones and running resistance is large is solved.
The grid support is arranged below the chute ventilating plate of the pneumatic chute system (3, 5), the grid support provides additional support for the pneumatic chute, and the ventilating cloth on the chute ventilating plate is stabilized to be smooth and stable, so that the reduction of the running resistance is facilitated, and the conveying speed is increased.
Each section of chute of the pneumatic chute systems (3 and 5) is independently supplied with air and independently controlled by a butterfly valve, the chutes are not affected with each other, the control precision is high, the maintenance is convenient, the independent adjustment according to the transportation volume is convenient, and the transportation of the whole system according to the rated transportation volume is ensured.
The tail and the head of the tubular belt conveyors (1, 2) and the tail and the head of the air cushion belt conveyor 4 are respectively provided with a pulse bag type dust collector; the air volume of a fan of the pulse bag type dust collector is adjustable, and the pressure difference between the upper part and the lower part of a filter bag of the pulse bag type dust collector is 0.3-0.8 KPa. The pulse bag type dust collector is mainly used for blowing and dedusting alumina powder, and when the pulse bag type dust collector is specifically applied, the pulse bag type dust collector is supplied with air in a centralized manner by an air compression station and is used for ensuring high-frequency blowing of the pulse bag type dust collector; meanwhile, the pressure difference between the upper part and the lower part of a filter bag of the pulse bag type dust collector is maintained, the filtering air speed of the pulse bag type dust collector is ensured, and the blowing dust collection effect is not influenced.
It should be noted that, in the actual use of the present application, the devices are not limited to the electrical and control system, the CCTV closed-circuit television monitoring system, the lighting system, etc. according to the needs, and the devices are commonly used technical means by those skilled in the art.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (6)
1. An alumina ultra-remote large-capacity conveying method is characterized by comprising the following steps: the method comprises the following steps:
step 1), selecting a conveying mode according to terrain; selecting a tubular belt conveyor at a long-distance uphill section, and selecting a pneumatic chute system at a downhill section or a gentle section; selecting an air cushion belt conveyor for short-distance uphill sections or lifting requirements;
step 2), setting a transfer station; a transfer station is arranged at the joint of each conveying mode,
step 3), selecting the equipment model and power used by each transmission mode to keep the traffic volume of all the selected transmission modes consistent;
step 4), selecting a dust removal mode; the dust removal mode is that pulse bag type dust collectors are arranged at the tail part and the head part of the tubular belt conveyor and the air cushion belt conveyor, and buffering air locking devices are arranged at a material receiving port and a material discharging port of the pneumatic chute system.
2. The alumina ultra-remote mass transfer process of claim 1, wherein: the pneumatic chute system comprises chutes, the length of each section of chute is 6 m/section, and the angle of the pneumatic chute system is 4 degrees.
3. The alumina ultra-remote mass transfer process of claim 2, wherein: and a grid support is arranged below the chute ventilating plate.
4. The alumina ultra-remote mass transfer process of claim 3, wherein: each section of the chute is independently supplied with air and controlled.
5. The alumina ultra-remote mass transfer process of claim 1, wherein: the air volume of a fan of the pulse bag type dust collector is adjustable, and the pressure difference between the upper part and the lower part of a filter bag of the pulse bag type dust collector is 0.3-0.8 KPa.
6. The utility model provides an aluminium oxide ultra-long-range large capacity conveying system which characterized in that: is arranged by using the alumina ultra-long-distance mass transfer method according to any one of the claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910781724.7A CN111285042A (en) | 2019-08-23 | 2019-08-23 | Ultra-remote conveying method and system for aluminum oxide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910781724.7A CN111285042A (en) | 2019-08-23 | 2019-08-23 | Ultra-remote conveying method and system for aluminum oxide |
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| CN111285042A true CN111285042A (en) | 2020-06-16 |
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| CN201910781724.7A Pending CN111285042A (en) | 2019-08-23 | 2019-08-23 | Ultra-remote conveying method and system for aluminum oxide |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09150929A (en) * | 1995-11-29 | 1997-06-10 | Ube Ind Ltd | Belt conveyor device |
| CN103010698A (en) * | 2012-12-24 | 2013-04-03 | 云南云铝涌鑫铝业有限公司 | Air cushion belt type conveying system used for aluminum electrolysis plant and aluminum electrolysis plant with same |
| CN103010707A (en) * | 2012-12-17 | 2013-04-03 | 云南云铝涌鑫铝业有限公司 | Air cushion-belt conveyer device |
| CN103640818A (en) * | 2013-12-11 | 2014-03-19 | 东北大学设计研究院（有限公司） | Aluminum oxide warehousing system and conveying and storing method thereof |
| CN103754597A (en) * | 2014-01-21 | 2014-04-30 | 内蒙古大唐国际锡林浩特褐煤综合开发有限责任公司 | Dedusting delivery system and method for bulk materials |
| CN108545401A (en) * | 2018-06-14 | 2018-09-18 | 湖南科技大学 | A kind of pipe conveyer turning radius tunable arrangement and its quick locating mounting method |
| CN109733790A (en) * | 2019-03-07 | 2019-05-10 | 河南理工大学 | A kind of molding machine of circular tube conveyor |
-
2019
- 2019-08-23 CN CN201910781724.7A patent/CN111285042A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09150929A (en) * | 1995-11-29 | 1997-06-10 | Ube Ind Ltd | Belt conveyor device |
| CN103010707A (en) * | 2012-12-17 | 2013-04-03 | 云南云铝涌鑫铝业有限公司 | Air cushion-belt conveyer device |
| CN103010698A (en) * | 2012-12-24 | 2013-04-03 | 云南云铝涌鑫铝业有限公司 | Air cushion belt type conveying system used for aluminum electrolysis plant and aluminum electrolysis plant with same |
| CN103640818A (en) * | 2013-12-11 | 2014-03-19 | 东北大学设计研究院（有限公司） | Aluminum oxide warehousing system and conveying and storing method thereof |
| CN103754597A (en) * | 2014-01-21 | 2014-04-30 | 内蒙古大唐国际锡林浩特褐煤综合开发有限责任公司 | Dedusting delivery system and method for bulk materials |
| CN108545401A (en) * | 2018-06-14 | 2018-09-18 | 湖南科技大学 | A kind of pipe conveyer turning radius tunable arrangement and its quick locating mounting method |
| CN109733790A (en) * | 2019-03-07 | 2019-05-10 | 河南理工大学 | A kind of molding machine of circular tube conveyor |
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