Soft measurement method for overflow particle size of hydrocyclone

Abstract

The invention discloses a soft measurement method for the overflow particle size of a hydrocyclone. The method comprises the following steps of: A. acquiring xi1, xi2, xi3, xi4 and yi separately; B. performing normalization processing on xik (k is equal to 1, 2, 3 or 4) and yi separately, obtaining processed values xik and yi, and obtaining a sample set defined in the specification, wherein xi is defined in the specification; C. setting gamma and K(x,xi); D. calculating a formula defined in the specification; E. performing inverse normalization reduction on y(x) to obtain ypi; and F. acquiring x1, x2, x3 and X4 separately to obtain a formula defined in the specification, and substituting x into ypi to calculate current overflow particle size. The method is short in test time, can realize real-time automatic control, and is relatively low in cost, low in sample requirement and high in prediction precision.

Description

technical field [0001] The invention belongs to the field of particle size measurement, in particular to a soft measurement method for the overflow particle size of a hydrocyclone. Background technique [0002] Grinding is an important process in the beneficiation process, and the hydrocyclone is an important equipment in the grinding process. The working principle of the hydrocyclone is as follows figure 1 As shown, when the pulp enters the cylinder along the feed port with a certain pressure and flow rate, the pulp rotates at a high speed in the cylinder. The ore slurry is divided into two types in the hydrocyclone, one is the outer layer flow that flows downwards close to the cone wall, and the other is the inner flow that rotates and rises at the center of the cone. Coarse-grained particles in the slurry are thrown into the outer layer flow by a large centrifugal force, sink along the wall of the hydrocyclone, and are discharged from the bottom flow port; finer particl...

AI Technical Summary

Problems solved by technology

[0021] When using the existing method to measure the overflow particle size of the hydrocyclone, the test time is long, the final detection value cannot meet the real-time requirements of automatic control, and the guidance for production is insufficient; the particle size analyzer is expensive, prone to blockage and maintenance It is troublesome; there is a problem of over-learning, it is easy to fall into local minimum, and the prediction accuracy is low

Images