coal grading and screening machine for sale
published date: 01-23-2019
Coal washing is an indispensable process for deep processing of coal. The coal directly mined from the mine is called raw coal. The raw coal is mixed with many impurities in the mining process, and the quality of coal is different. The coal with small internal ash and large internal ash is mixed. Together. Coal washing is an industrial process that separates impurities from raw coal or classifies high-quality coal and inferior coal.
Preparation before sorting
Screening: The operation of dividing a mixture of different particle sizes into various sizes using a perforated screen surface is called screening. The machine used for drying is called a sieving machine or a sieve. In coal preparation plants, screening operations are widely used in raw coal preparation and processing. According to different screening methods, it is divided into dry screening and wet screening.
Dehydration and decoupling of selected products
The clean coal is de-packed and dehydrated, then enters the centrifuge for secondary dewatering and then enters the clean coal belt conveyor. Medium coal and vermiculite use a double-channel de-screening machine, and the intermediate surface of the screen surface separates the medium coal from the vermiculite. The coal and vermiculite on the sieve are transported to the medium coal and vermiculite unloading point by the belt conveyor.
screens for coal & sand grading
Features of the coal screening machine
1.Cylinder-type eccentric shaft and eccentric block to make strong vibrating force.
2.Long material screening line, various sieving specifications.
3.Simple structure, reliable operation, low noise, low power consumption, mobile convenience.
4.High screening efficiency, large capacity, less block.
The working principle and advantages of banana vibrating screen
The banana vibrating screen machine (abbreviation: banana-type linear vibrating screen) is a linear vibration grading with a box vibrator and a plurality of different inclined screen faces, and the shape of the main box is similar to that of a banana. It is mainly used for the classification of large and medium-sized materials with high fine content, and can also be used for dehydration, de-intermediation and de-sludge operations. (The fine particles refer to particles with a particle size of less than half the size of the mesh.) The banana linear vibrating screen is designed by injecting a banana-shaped multi-stage working surface on the basis of a linear classifier. There is a larger slope screen at the feed end, followed by a stepwise decrease at a certain number of angles until the discharge opening, the overall screen surface is concave curved.…
Vibrating Screen Motor maintenance and solution of common faults
The service life of the vibrating motor determines the operation life of the whole screen machine. Therefore, in the ordinary production, we should always pay attention to whether the working state of the vibrating screen equipment is normal, whether the running state of the vibrating motor is good, check and solve some small anomalies and faults in time, and do a good job of cleaning and maintenance. because this can greatly increase the service life of vibration screening machine and vibration motor. Matters needing attention in maintenance and Storage of vibrating screen Motor in Operation. The use of equipment cannot be completely dust-free, but also the environment is bad, dusty, the vibration motor is no wind heat dissipation, all rely on natural cooling, so to special maintenance, the following is the maintenance content. 1. In the process of using, we…
Relationship between the vibrating screen material thickness and mesh size
Sand washing plants, coal preparation plants, and mine screening plants will generally apply screening operations to their production lines, and the most used screening equipment such as dewatering, de-intermediation, and desliming. Lzzg develops large-scale and heavy-duty screening equipment expands the screening machinery area, enhances the mechanical vibration intensity of screening machinery, improves the production capacity and load-bearing capacity per unit area of screening machinery, and makes the screening machinery work more reliably and stably to adapt to different industries. Sub-machine requirements. The screening equipment of Longding Environmental Protection Technology has dewatering sieve, circular motion vibrating screen, thick sieve, high-frequency sieve, relaxation sieve, horizontal sieve, inclined sieve, probability sieve, linear motion vibrating screen, tailings dry sieve and so on. The general screening process is divided into two types. The first stage: the materials are layered according to the size of…
Reasons and solutions for the breakage of the vibrating screen
The more likely the linear vibrating screen is to appear in various faults during operation, the cracking of the screen plate and the breakage of the beam after the vibrating screen has been used for a long time, it is necessary to find the "cause" of the problem. During the use of the vibrating screen, the correctness of the operation method and the importance of regular cleaning and maintenance usually avoid the occurrence of the vibration screen failure frequency. Vibrating screens are designed to bring efficient results to the production process. The selection of the material of the vibrating screen itself; the calculation of the vibrating motor; the selection of the screen; whether the structural design of the fuselage conforms to the work on site, can select high-quality screening equipment with high efficiency and precision. So find out the cause…
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