Core principles of all screening equipment
The core principle of all screening equipment is the same: two or more substances need to be separated, find out the differences between them (for example: size, color, specific gravity, magnetism, etc.), and then use The difference between them separates them.
The above may be difficult to understand, but here are some examples of how to do it:(To better understand the role of different screening devices, the following story needs to be fictionalized)
If I am the owner of a mine and I want to make a particularly good lump ore particle, what should I do?
I installed a crusher first and then installed a vibrating screen. The large pieces of ore were crushed and then screened to produce mineral particles of the same size. I sold them on the market and found that the price was not high. Everyone was like this. The competition is fierce.
I wanted to win the competition, so I improved the process and added a magnetic separation process (magnetic separation equipment uses magnets to generate a strong magnetic field to separate magnetic minerals from non-magnetic minerals), so the iron impurities in my products were greatly reduced. , the unit price of my product increases.
However I was still not satisfied, so I added a color sorting process to the existing production process. (The color sorting equipment is suitable for materials of different colors, which have different reflections of light. Then the computer controls the air nozzles to accurately remove the different colors. Colored particles), so my products, both in terms of appearance and purity of materials, are far superior to those in the same industry, and I may have made huge profits.
Later, I received an order with higher requirements and more profit. However, the customer asked me to remove all impurities and only needed the purest mineral particles. So I analyzed the minerals and found that the existing finished particles contained, part of which contains impurities, is naturally formed, and is indistinguishable from the purest materials in appearance, size, and color. There is only one difference, that is, the specific gravity of particles containing impurities is 1.1 tons/cubic meter, while the purest particles’ specific gravity is 0.9 tons/cubic meter. The specific gravity of water is exactly 1 ton/cubic meter.
So I added water selection to the existing process (putting materials into water or medium, materials with a specific gravity smaller than the medium will float on the water, and materials with a larger specific gravity will sink) and drying equipment to convert the existing finished particles All are put into the water separator, and then the purest materials will all float on the water, while the materials containing impurities with a specific gravity of 1.1 tons/cubic meter will all sink to the bottom of the water. Separation-drying, I completed the customer’s request.
Well, the story is over, now let’s review: different sizes – use vibration screening to separate sizes, different colors – we use a color sorter to separate colors, whether it contains magnets – a magnetic separator for sorting, different specific gravity – media sorting.
Of course, there are many kinds of sorting equipment, such as winnowing, dissolving sorting, etc. The methods are different, but the core principles are the same.
