Traditional Culture Encyclopedia - Traditional festivals - Disadvantages of machine-made black sand
Disadvantages of machine-made black sand
Do you want to ask if there are any shortcomings in black machine-made sand? The disadvantage of this device are as follows:
1, the particle shape is not smooth enough, the particles are sharp and angular, the surface is rough, and the surface area is large under the same sand ratio.
2. Water is needed, and the amount of mud treated is large, and the gradation is not good.
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