Development of BPSM-I on-line particle size analyzer

The development of BPSM-I on-line particle size analyzer is an automatic detection device for key parameters in the continuous production process of mineral processing. It can be applied in non-ferrous, black, cement, chemical, gold and other industries. It is a fifteenth step approved by the Ministry of Science and Technology. The subproject of the project "Study on process monitoring technology and automatic control system".

"BPSM-I type online particle size analyzer" consists of eight parts: slurry steady flow box, instrument control box, electronic touch screen, valve box, air purification device, measuring head, calibration sampler, and rack. The core part of the instrument is the nationally patented measuring head with high technical content; followed by the instrument control box, a PLC programmable controller and the corresponding unit module are installed, which is the command center of the instrument; the electronic touch screen is Input, output, and man-machine conversation operations.

"BPSM-I type online particle size analyzer" solves the following key technologies: ensuring the development of measuring probes with high precision and high stability; solving the problems of hard and difficult processing of the contacts for static and dynamic measurements; ensuring the measurement of instruments Accuracy and sensitivity of the design, selection and procurement of displacement sensors; Software mathematical processing methods for measuring displacement signals; Sampling devices to ensure representative measurement samples.

"BPSM-I type online particle size analyzer" is a direct measurement type of slurry particle size testing equipment. The zero correction technology of water in this instrument automatically eliminates the drift of the instrument and the effect of the wear of the measuring contact; changes in the viscosity, temperature, and concentration of the pulp have no influence on the normal measurement of the instrument; the measurements of the bubble and flake minerals on the instrument are not It will cause any interference; and, there is no need for degassing, demagnetization, or dilution; it completely overcomes the measurement error caused by the measurement environment and external factors. To achieve absolute accuracy:? Precision 1--2%; Particle size range: 600μm ~ 31μm? (30 ~ 500 mesh); ? Measurement of particle size: ? In the particle size measurement range, the user can optionally calibrate the two as the display and output of the measurement particles level. It has reached the advanced level of similar international instruments.

According to the incomplete statistics of the Yongping Copper Mine, the annual processing volume of grinding is increased by 6%. After deducting the production cost, the annual economic benefit can reach 8 million yuan. At present, the Baotou Iron and Steel Group concentrator has signed a contract to repair the "PSI-200 Particle Sizer" imported from Finland using a domestic measuring head; the prospect of popularization and application is good.

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