A Calculation Method of Particle Size Weighted Average Particle Size

Abstract

The invention discloses a method for calculating the weighted average particle size of particle size and quality, and belongs to the technical field of machine-made sandstone production. The method comprises the following major steps: A, calculating the single-grain grade median diameter A n =( a max + a min ) / 2, where a max is the largest mineral particle size in the single-grain class, a min is the minimum mineral particle size in the single-grain grade; B, calculate the weight of the single-grain grade C n =M n / Q ,in M n is the mass of single-grained ore, Q is the total mass of mineral materials; C, calculate the weighted average particle size of particle size K =( A 1 x C 1 )+( A 2 x C 2 )+…+( A n x C n ); D. According to step A to step C, calculate the weighted average particle size of the feed particle size K 进 and the mass-weighted average particle size of the output particle size K 出 ; F, calculation process crushing efficiency P =( K 出 / K 进 )×100%.

Description

technical field [0001] The invention relates to a method for calculating the weighted average particle size of particle size and quality, and belongs to the technical field of machine-made sandstone production. Background technique [0002] In the process of mining, affected by geological structure, hydrometeorology, mining technology and other factors, the particle size and particle size of the mineral materials mined from different parts and different periods are quite different, so engineering excavation materials or tailings are used as sand and gravel When producing raw materials, the particle size and particle size differences are even greater. The difference in particle size and size of mineral materials will lead to large fluctuations in the crushing efficiency of the sandstone production process. [0003] At present, the evaluation indicators of domestic machine-made sandstone mineral materials mainly focus on the physical properties and chemical composition of the...

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Problems solved by technology

[0004] However, the production grading balance table is calculated based on the simulation process based on ideal conditions, and there are deficiencies such as large deviations from actual production parameters and complicated calculation processes. For the sand and gravel production system, it is difficult to control the source of materials and evaluate the crushing efficiency of the process.

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