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In the process of fineness determination, what issues we should pay attention to?


1. Sieving needs to be complete. When mechanical sieve shaker is adopted, it is required to brush the sieve bottom regularly according to the operating requirements to prevent the sieve mesh from being blocked by coal powder because it will lead to higher analysis result. 2. After the sieving, use a soft brush to brush the outside part of the sieve mesh carefully without any coal powder loss or any damage to the sieve. 3. The sieve for analysis is required to be calibrated. If the sieve is not qualified, it cannot be used in analysis; once the sieve is loose or the frame gets deformed, the sieve is supposed to be replaced. 4.Technical specification for mechanical sieve shaker must conform to the requirements.