Many types of screening equipment can be used for sand and gravel separation, such as vibrating screens, circular vibrating screens, and tailings dry discharge machines. The most suitable equipment is the best equipment. Choosing the appropriate dewatering screen equipment will undoubtedly depend on the material to be processed and the desired effect. Here are 7 questions to assist you in choosing screening equipment.
Question 1: How many tons per hour?
As the name implies, it is how many materials can be processed in a certain period, or how many tons have to be processed per hour. Usually, the screening equipment manufacturer will also ask you about the working hours of the day, Nissan, etc., to provide a reasonable equipment selection plan. The common ones sometimes produce 100, 200, 400, 800 tons, and so on.
Question 2: Particle size distribution-what is the size of the material?
The particle size distribution is a list of material sizes to be separated. You should provide the screening equipment manufacturer with several particle size distributions above and below the cut point required for your application. For the cut point, you need, it is helpful to provide the number or percentage of oversize separated by that size. It is also beneficial to provide half the size of the cut required. Providing more than one sieve number, one large sieve number and one half sieve number size allow the supplier to have a more complete understanding of your application, including the particle size in the feed stream, so they can provide the right one according to your requirements machine.
Question 3: Bulk density-what is the bulk density of the material to be separated?
All materials have different densities. Similarly, whether it is in metric or imperial values (for example, tons/cubic meter, or pounds/cubic feet). It does not matter to provide the weight of the solid, which is crucial for the manufacturer.
Question 4: Humidity-what is the moisture content in the raw materials?
The moisture content of the feed is an important detail to provide. Whether the moisture content is 5%, 10%, 20%, or the backbone (moisture content is 0%), this is an important factor in determining the type and size of the screening device. It also allows manufacturers to provide recommendations that are critical to achieving screening efficiency.
Question 5: What screening efficiency is required?
There will always be oversized material in a product that is too small, and it will always be necessary to remove fines from the feed stream. You may not have noticed this, but it is real! The acceptable degree of screening efficiency is of great significance to the selected equipment.
There is a big difference between the strict efficiency of 80% and 95%, where the size of the finished sand and the minimum size limit must be as clean as possible.
Question 6: What other special requirements are there?
Sometimes other functions are needed on the vibrating screen and the circular vibrating screen, such as adding water washing equipment, whether it is necessary to crush, etc., to better separate to produce better quality products. Special requirements may also include the drive mechanism of the machine, which can improve screening efficiency. If you have such a requirement, you should communicate with the supplier in time.
Question 7: Screen-what kind of screen to choose?
There are many screening media to choose from on the screening equipment, such as braided steel wire, stamped steel plate, rubber, and polyurethane. Based on your previous experience, you may have a preference. The type of sieving medium can determine the percentage of the open area, which will affect the size of the sieving unit. It may also affect the number of platforms on the vibrating unit or the diameter and length of the trommel.
In short, most screening equipment manufacturers have decades of experience in machine size selection, and they provide thousands of models of equipment. Even if your knowledge of particle size screening equipment is zero, as long as you answer these seven questions, you can provide viable distributors or manufacturers with the correct equipment selection, as long as you can provide as much complete application data as possible.
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