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Artificial gravel powder content of less than 0.16mm particle content of the artificial sand, artificial sand and gravel powder particles less than 0.08mm can be regarded as an inert admixture view, the appropriate content of the powder can improve the workability of the concrete to improve concrete dense, beneficial to improve the performance of concrete.In China, the vast majority of the hydropower station in the requirements of the sand technical parameters, the dust content requirements in 6-18%, 12-22% of roller compacted concrete sand dust content requirements. Large artificial gravel system most of the roller compacted gravel powder content, but also works with gravel powder content exceeded the phenomenon occurred.
The dust content in the dry sand process of the legal system of artificial sand is generally higher to meet the quality standards found in the dust content is greater than the standard, then consideration should be given part of the wet production, and wash away some of the powder or the selection of fan vacuum cleaner device to suck out the part of the powder, to meet the standard requirements. A three-separation of the powder used successfully in the Jinping I Hydropower Project, the test results achieved good results.Areva source trench gravel system also installed four sets of three separation of the powder to remove the finished sand excess powder.Artificial sand in the process of wet sand in the dust content is generally low to most projects are required to recover part of the powder to meet project needs.
Hydropower project in artificial sand powder recovery mechanical recovery and artificial recovery.Large artificial aggregates production size or narrow venue project, the process must be designed on the powder recovery plant (or fine sand recycling plant). Screening workshop and sand workshop spiral classifier overflow water away powder is about to be recycled through the set flow pool. The current selection of more advanced cyclone vacuum dewatering equipment. Small artificial aggregates production size or space where engineering, artificial recovery, and to control the dust content in the artificial sand.That sand washing machine discharge overflow water in the production process for natural storage of dehydration, natural storage after dewatering of fine sand can add the loader line with straight unloaded motor transport. We provide Professional technology, excellent product quality and intimate after-sales service when you purchase Ball mill, from our company.As a professional mining machinery exporter, we will win your trust with our delivery speed, Enterprises Credit and product quality.
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