Method and apparatus for pulverizing solid materials with a grin

Details Method and apparatus for pulverizing solid materials with a grin Method and apparatus for pulverizing solid materials with a grin

1979-10-04

1981-05-26

McGraw, Vincent P.

Optics: measuring and testing

With sample preparation

73421R, 250288, 356315, G01N 122, G01N 2172

Patent

active

042695074

ABSTRACT:
A grinding wheel is used to pulverize solid test samples and propel particles thereof into a flame for analysis by an instrument such as a mass spectrometer. The sample is attached to one end of a pivoted lever arm. The other end of the lever arm is connected to a solenoid. Activation of the solenoid brings the sample into contact with the rotating grinding wheel. The solid particles produced by the wheel are propelled into the flame through a slot in an intermediate draft shield. The sampling cone of a conventional mass spectrometer or similar instrument may be placed in the flame to analyze the nature of the test materials. The device may also be used to inject test particles into the air or gas feed stream ahead of the flame if desired.

REFERENCES:
patent: 3163699 (1964-12-01), Staunton
patent: 3625614 (1971-12-01), Herrmann et al.
patent: 3791743 (1974-02-01), Cody et al.
patent: 3957374 (1976-05-01), Kriese et al.
"Molecular Analysis by Mass Spectrometry"; Vigon, Jr.; Science, vol. 205, 13 Jul. 1979; pp. 151-195.

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