ISSN:
0934-0866
Keywords:
Chemistry
;
Industrial Chemistry and Chemical Engineering
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
It is often necessary to carry out sedimentation analysis of powders, consisting of two or more components, which differ in some physical properties. By means of theoretical studies of twocomponent systems the systematic errors of the measured particle size distributions were analysed for the case that differences exist in the following combinations of properties:-particle size distribution D(x) and solid density ϱs-D(x) and mass absorption coefficient μm-D(x) and ϱs and μmUsing real systems (SiO2 + Fe2O3, Al2O3 + SiO2, Al2O3 + Fe2O3) the partial and total errors were estimated and compared with the results obtained with a Sedigraph. Differences in the density of the components often result in negligible errors, even for the system SiO2 + Fe2O3, if the mass portion of one component is below about 10%. For the total error the differences of μm and D(x) are decisive. Its value is below 1% if the mass portion of the slightly absorbing component is 〈5% or if the strongly absorbing component is 〈1%.
Additional Material:
10 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/ppsc.19840010121
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