Zeolite catalyst density analysis

(1) Bulk density Bulk
Test Method This bulk density is in a container, by free-fall section exposed to the air for 24h the bulk density of the sample.
This method takes the instrument may be a simple cylinder for a tap or bulk density of the analyzer.
(2) tapped bulk density
Determination of tapped bulk density of conventional vibration method, using the experimental apparatus shown in ASTM standard specified in FIG. 3-7, the test method is the pretreatment of the catalyst at 400 ℃ 3h in air (reduction catalyst should be in an inert atmosphere be). After cooling, the operation of the vibrator in the measuring device to the second 2 ^ -3m1. rate added through the feed hopper into the measuring cylinder, and then continue the vibration lmin, shutting down the vibrator, amount of catalyst volume and weighed mass, calculated tap bulk density.
Calculated with the formula without standard equipment in the laboratory, can be used in the rubber board 250mL graduated cylinder side edge joined to make a real sample, to be added to complete the sample continues to trample real 2min. This method measured the non-strict measure bulk density.