CN105173622A - Dedusting method for conveyor belt of concentrating mill and device thereof - Google Patents

Abstract

The invention discloses a dedusting method for a conveyor belt of a concentrating mill and a device thereof. A plurality of piezoelectric ultrasonic atomizing nozzles are evenly arranged at the top of a belt cover. The piezoelectric ultrasonic atomizing nozzles are connected with an ultrasonic power source, a water supply system and an air pressurization system. The basic principle of the dedusting method for the conveyor belt of the concentrating mill is that water is atomized to be compact water mist of which the diameter of water drops is 1 micron to 100 microns through the piezoelectric ultrasonic atomizing nozzles, and the space, above the conveyor belt, in the whole belt cover is filled with the water mist. The compact water mist and dust descend and cover the surfaces of materials after absorption and aggregation, and thus the effects of dedusting and dust suppression are achieved. According to the dedusting method for the conveyor belt of the concentrating mill and the device thereof, the dedusting effect is obvious, the implementation is easy, the operation and maintenance are simple and convenient, the energy consumption is low, the water consumption is low, no dedusting agent is added, and equipment is prevented from corrosion. No influence is produced on the follow-up concentrating operation. The environment of a conveyor belt platform of the concentrating mill can be effectively improved.

Description

A dust removal method and device for conveyor belts in mineral processing plants

technical field

The invention relates to a dust removal method, in particular to a dust removal method for a conveyor belt of a concentrator. The invention also relates to a device for realizing the dust removal method for the conveyor belt of the mineral processing plant.

Background technique

The ore material in the concentrator is generally transported between different equipment or operations through the conveyor belt. Because the ore will generate vibration and friction during the movement of the belt, and disturb the surrounding air, so a large amount of dust will be generated and raised, which will escape and spread with the airflow. These dusts have the characteristics of small particle size, high concentration, not easy to settle, and easy to form secondary pollution. If no protective measures are taken to control the dust, it will seriously pollute the working environment of the workshop and endanger the health of employees.

Because the transport belt is in motion when it is running, it cannot form a sealed environment, and it is relatively difficult to control the moving dust source. At present, there are mainly two dust reduction methods: wind dust removal and watering and humidification, and the application effect is not very ideal. Wind dust removal is on the belt. Set up a dust extraction hood, and use a dust extraction fan to extract the dust through the exhaust pipe and collect it in one place. Although this method can play a certain role in dust extraction and purification, it has disadvantages such as poor sealing effect of the dust extraction hood, high fan power, high energy consumption, low dust removal efficiency, large equipment investment, and complicated installation. Sprinkling humidification is a treatment method that sprays water above the belt to wet the ore so that it no longer produces dust. Since the spray water is flowing water, the area of effect of spraying on the ore is very small, so a large amount of water must be used to moisten the entire ore surface. Although this method is simple and easy to implement, it consumes a lot of water, and the wet ore is easily muddy and bonded on the belt, which will damage the belt equipment. For the situation where the water content of the ore material is strictly limited, sprinkling and humidification is completely unsuitable. .

Therefore, there are still many problems in the dust removal technology of the conveyor belt of the above-mentioned concentrator and need to be improved.

Contents of the invention

The first technical problem to be solved by the present invention is to provide a high-efficiency, energy-saving, easy-to-implement and non-affecting method for the dedusting of the conveyor belt of the mineral processing plant.

The second technical problem to be solved by the present invention is to provide a device for realizing the dust removal method for the conveyor belt of the mineral processing plant.

In order to solve the above-mentioned first technical problem, the present invention provides a dust removal method for the conveyor belt of a mineral processing plant. A plurality of piezoelectric ultrasonic atomizing nozzles are uniformly arranged on the top of the belt cover of the conveyor belt, and the outlets of the piezoelectric ultrasonic atomizing nozzles Stretching into the belt cover, the piezoelectric ultrasonic atomizing nozzle is connected with the ultrasonic power supply, water supply system and air pressurization system, and the dense water mist generated by the piezoelectric ultrasonic atomizing nozzle and the dust in the belt cover are absorbed and reunited, then descend and cover to Material surface, so as to achieve the effect of dust removal and dust suppression.

The distance between adjacent piezoelectric ultrasonic atomizing nozzles is 50cm-150cm.

The water droplet diameter of the dense water mist atomized by the piezoelectric ultrasonic atomizing nozzle is 1 micron to 100 micron.

In order to solve the above-mentioned second technical problem, the device for realizing the dust removal method for the conveyor belt of the mineral processing plant is provided. A plurality of piezoelectric ultrasonic atomizing nozzles are evenly arranged on the top of the belt cover of the conveyor belt. The outlet of the ultrasonic atomizing nozzle extends into the belt cover, and the piezoelectric ultrasonic atomizing nozzle is connected with the ultrasonic power supply, the water supply system and the air booster system.

The distance between adjacent piezoelectric ultrasonic atomizing nozzles is 50cm-150cm.

The dust removal method and device for the conveyor belt of the mineral processing plant adopt the above technical scheme, and the piezoelectric ultrasonic atomizing nozzles are uniformly arranged on the top of the belt cover of the conveyor belt, and the distance between adjacent piezoelectric ultrasonic atomizing nozzles is 50cm-150cm. The piezoelectric ultrasonic atomizing nozzle is connected with the ultrasonic power supply, water supply system and air pressurization system. The ultrasonic power supply supplies power to the piezoelectric ultrasonic atomizing nozzle. Adjusting the power supply frequency can change the diameter of the water mist and water droplets produced by the piezoelectric ultrasonic atomizing nozzle. The water supply system supplies water evenly to the piezoelectric ultrasonic atomizing nozzle, and the mist volume can be changed by adjusting the water volume. The air pressurization system supplies air to the piezoelectric ultrasonic atomizing nozzle, and the spray range and distance of atomized water can be changed by adjusting the air volume. The basic principle of the present invention is to use the piezoelectric ultrasonic atomizing nozzle to atomize water into a dense water mist with a droplet diameter of 1 micron to 100 microns, which fills the entire belt cover above the conveyor belt. Material surface, so as to achieve the effect of dust removal and dust suppression. The invention has remarkable dedusting effect, is easy to implement, easy to operate and maintain, low energy consumption, small water consumption, does not add dedusting agents, does not corrode equipment, does not affect subsequent mineral processing operations, and can effectively improve the environment of the conveyor belt platform of the mineral processing plant.

The present invention has the following advantages:

1. The present invention is easy to implement. By changing the number of atomizing nozzles, the size of the mist, the amount of mist and the coverage, it can be widely applied to the dust removal of conveyor belts of different types and specifications, and the operation and maintenance are simple.

2. Due to the small diameter of atomized water droplets, high density, wide coverage, large contact area with dust, and high contact probability, dust can be effectively settled. At the same time, the contact area between the water mist and the surface of the ore is large and uniform, so that the surface of the ore can be evenly moistened without muddying, and the environment of the conveyor belt platform can be effectively improved.

3. Due to the use of atomized water, the water consumption is small. Compared with wind dust removal, there is no mechanical equipment such as large motors, and the energy consumption is small.

4. No surfactant is added, it will not corrode equipment, and will not affect subsequent operations.

To sum up, the present invention is a high-efficiency, energy-saving, easy-to-implement dust removal method for conveyor belts in mineral processing plants that has no impact on subsequent production processes. The device for realizing the dust removal method for the conveying belt of the mineral processing plant has simple structure and reliable performance.

Description of drawings

Fig. 1 is a schematic front view of the equipment connection applied in the embodiment of the present invention.

Fig. 2 is a schematic side view of the equipment applied in the embodiment of the present invention.

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

Referring to Fig. 1 and Fig. 2, the transport belt 7 is installed on the pulley 6, the transport belt 7 is provided with a belt cover 5, and a plurality of piezoelectric ultrasonic atomizing nozzles 1 are evenly arranged on the top of the belt cover 5 of the transport belt 7. The outlet of the ultrasonic atomizing nozzle 1 extends into the belt cover 5, and the piezoelectric ultrasonic atomizing nozzle 1 is connected with the ultrasonic power supply 2, the water supply system 3 and the air booster system 4.

Specifically, the distance between adjacent piezoelectric ultrasonic atomizing nozzles 1 is 50 cm-150 cm.

Referring to Fig. 1 and Fig. 2, a plurality of piezoelectric ultrasonic atomizing nozzles 1 are uniformly arranged on the top of the belt cover 5 of the conveying belt 7, and the distance between adjacent piezoelectric ultrasonic atomizing nozzles 1 is 50cm-150cm. The outlet of the piezoelectric ultrasonic atomizing nozzle 1 extends into the belt cover 5. The piezoelectric ultrasonic atomizing nozzle 1 is connected with the ultrasonic power supply 2, the water supply system 3 and the air booster system 4, and is atomized by the piezoelectric ultrasonic atomizing nozzle 1. The dense water mist with a droplet diameter of 1 micron to 100 microns, the dense water mist absorbs and agglomerates with the dust in the belt cover 5, then descends and covers the surface of the material, so as to achieve the effect of dust removal and dust suppression.

Referring to Fig. 1 and Fig. 2, the basic principle of the present invention is to use the piezoelectric ultrasonic atomizing nozzle 1 to atomize water into a dense water mist with a droplet diameter of 1 micron to 100 microns, and the dense water mist fills the entire belt cover 5 above the conveyor belt 7 Inside. Dense water mist absorbs and agglomerates with dust and descends to cover the material surface, thus achieving the effect of dust removal and dust suppression. The invention has remarkable dedusting effect, is easy to implement, easy to operate and maintain, low energy consumption, small water consumption, does not add dedusting agents, does not corrode equipment, does not affect subsequent mineral processing operations, and can effectively improve the environment of the conveyor belt platform of the mineral processing plant.

Example:

Using the method described in the present invention, a dust removal experiment was carried out on a 6m under-screen product conveyor belt and a 110m over-screen product conveyor belt in an iron ore dressing plant in Chengde, Hebei. During the test, according to the method shown in Fig. 1 and Fig. 2, a piezoelectric ultrasonic atomizing nozzle 1 is arranged every 100 cm on the top of the belt cover 5 of the transport belt 7, and the piezoelectric ultrasonic atomizing nozzle 1 is connected with the ultrasonic power supply 2 and the water supply system. 3 and air pressurization system 4 and other equipment connections. During the test, the operating frequency of the piezoelectric ultrasonic atomizing nozzle 1 was set to 120 kHz, the water supply system 3 was adjusted to maximize the amount of atomization, and the air was introduced so that the water mist could spread evenly in the belt cover 5 . After the test, the amount of inhalable dust around the transport belt work platform all dropped below 2.0 mg/m ³ , which proves that the present invention is effective and feasible.

Claims (5)

1. A dust removal method for the transport belt of a mineral processing plant, characterized in that: a plurality of piezoelectric ultrasonic atomizing nozzles are uniformly arranged on the top of the belt cover of the transport belt, and the outlets of the piezoelectric ultrasonic atomizing nozzles extend into the belt cover , the piezoelectric ultrasonic atomizing nozzle is connected with the ultrasonic power supply, water supply system and air pressurization system, the dense water mist generated by the piezoelectric ultrasonic atomizing nozzle absorbs and agglomerates with the dust in the belt cover, then descends and covers the surface of the material, so as to achieve The effect of dust removal and dust suppression. 2. The dust removal method for the conveyor belt of a concentrator according to claim 1, characterized in that the distance between adjacent piezoelectric ultrasonic atomizing nozzles is 50cm-150cm. 3. The dust removal method for the conveyor belt of the mineral processing plant according to claim 1 or 2, characterized in that: the diameter of the dense water mist atomized by the piezoelectric ultrasonic atomizing nozzle is 1 micron to 100 micron. 4. Realize the device for the dedusting method of the conveyor belt of the mineral processing plant as claimed in claim 1, characterized in that: a plurality of piezoelectric ultrasonic atomizing nozzles are evenly arranged on the top of the belt cover (5) of the conveyor belt (7) (1), the outlet of the piezoelectric ultrasonic atomizing nozzle (1) extends into the described belt cover (5), and the piezoelectric ultrasonic atomizing nozzle (1) is connected with the ultrasonic power supply (2), water supply System (3) and air pressurization system (4) are connected. 5. The device according to claim 4, characterized in that the distance between adjacent piezoelectric ultrasonic atomizing nozzles (1) is 50cm-150cm.