Dust angle of repose tester and powder flowability testing instrument

1. Cone taper of 60 °± 0.5 °;
   2. The outflow diameter should be 5mm, and the center of the funnel should be perpendicular to the center of the lower tray;
   3. The distance between the bottom edge of the outflow port and the disc surface is 80mm 2mm, and the protractor is 7.5cm~10cm;
   4. A measuring cylinder with a diameter of 80mm and a volume of 100ml for the material tray;
   5. Flat dust scraper blade, rod needle;
2. Operating Steps
   1) The instrument should be placed horizontally on the test bench; Block the funnel outlet with a stopper rod
   2) Load the dust sample into a measuring cylinder, level it with a scraper, and pour it into a funnel.
   measurement process
   1) Pull out the stopper to allow dust to flow out of the funnel hole;
   2) For dust with poor fluidity, a needle can be used to stir and continuously disperse the dust
   On the material tray.
   3) After all the dust has flowed out, rotate the protractor to measure the dust cone busbar on the material tray
   The acute angle between the horizontal plane and the rest angle.
   Multiple measurements
   It should be measured continuously for 3 to 5 times, and the arithmetic mean A and mean square error a should be calculated

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