en.Wedoany.com Reported - The mineral processing plant of Yinan Gold Mine, under Shandong Gold Group, recently completed an industrial comparative trial of a high-frequency screen. Located in Yinan County, Linyi City, Shandong Province, China, the trial was conducted in the grinding system of the Jinlong Processing Plant. Its main objective was to address long-standing technical bottlenecks in traditional cyclone classification, such as "reverse enrichment" and "coarse particle overflow." The plant manager explained that incomplete screening of fine-grained materials by traditional cyclones prevents the full liberation of valuable minerals, leading to resource waste and increased energy consumption. To verify the actual performance of the high-frequency screen, the trial team developed a comparative plan featuring "same feed, same operating conditions, and parallel dual-line operation," running the high-frequency screen simultaneously with the existing cyclone group.
During the trial, more than ten technicians worked in shifts on the production front line, focusing on systematic evaluation of two core indicators: "the proportion of -200 mesh in the grinding product fineness" and "screening and classification efficiency." The high-frequency screen adopted by the processing plant operates on the principle of high vibration frequency. It disrupts the surface tension of the slurry through high-frequency vibration, accelerating the separation of denser valuable minerals, thereby achieving efficient and precise classification of fine-grained materials. Technicians meticulously recorded over a hundred sets of key data daily, including feed concentration, processing capacity, screen aperture, amplitude, and frequency. They also regularly sampled for particle size analysis to ensure the continuity and accuracy of data collection.
After more than a month of continuous testing and statistical analysis of massive data, the technical advantages of the high-frequency screen were quantitatively verified. Data shows that under stable feed conditions, the use of the high-frequency screen resulted in a stable increase of 5 percentage points in the system's grinding fineness (-200 mesh content) and a 5 percentage point improvement in classification and screening efficiency. The introduction of the high-frequency screen significantly reduced the circulating load and over-grinding of qualified fine-grained materials, effectively lowered energy consumption, and simultaneously increased the degree of liberation of valuable minerals.
In the next step, based on the results of this high-frequency screen trial, Yinan Gold Mine will comprehensively evaluate the equipment adaptability, energy consumption, and economic viability of the high-frequency screen. The mine plans to promote and implement modifications in stages, striving to translate the trial results into tangible productivity and economic benefits, and continuously drive improvements in mineral processing production towards "quality enhancement, efficiency increase, consumption reduction, and stable output." The plant manager stated: "We aim to find an effective path to optimize the grinding and classification process through solid industrial trials, ensuring that every bit of resource delivers its maximum value."
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