Journal ArticleDOI
Determination of quartz and its correlation with some physical properties of refractory clays (Kaolinite)
Subrata Banerjee,C. L. Venable +1 more
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In this article, the usefulness of a refractory clay depends very much on the quantity of free silica (quartz) in the clay and has to be determined before the clay is mined.Abstract:
The usefulness of a refractory clay depends very much on the quantity of free silica (quartz) in the clay and has to be determined before the clay is mined. It has been found that the quartz content can be correlated with loss on ignition (LOI), Pyrometric Cone Equivalent (PCE), water of plasticity and Bulk Specific Gravity (BSG) and calcining temperature of the clay. All these correlations indicate that a suitable clay should not contain more than 20–25% quartz for refractory use.read more
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Journal ArticleDOI
Determination of alpha-quartz in the respirable portion of airborne particulates by X-ray diffraction.
TL;DR: Methods have been developed for the determination by x-ray diffraction of quartz in airbrone dust samples in the milligram range collected in the industrial environment, permitting the analysis of the large number of samples.
Journal ArticleDOI
Separation and analysis of dust in lung tissue.
N. A. Talvitie,Lial W. Brewer +1 more
TL;DR: The method is applicable as a standard, routine technique to the analysis of relatively small specimens of lung tissue submitted for confirmation of pathologic findings.
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The determination of quartz in small samples by an x-ray technique
TL;DR: In this article, a method used by Talvitie and Brewer for analysing small samples by x-ray diffraction counting techniques is examined, and the experimental results are shown to be in agreement with the theoretical prediction that, for specimens which are so thin that only 10 to 20% of the counting rate for an infinitely thick specimen is obtained, the response is a reasonably linear function of the density of the deposition.
Journal ArticleDOI
Application of x-ray diffraction to analytical problems of occupational health.
TL;DR: X-ray diffraction is presented as an analytical tool for crystalline substances which are hazards in an occupational environment for both qualitative and quantitative analyses of samples.