(under subclass 4) Methods and apparatus for developing or
for neutralizing or destroying magnetic properties of components of a mixture to permit or facilitate subsequent separation of the components of the mixture.
(1) Note. The methods and apparatus hereof, insofar as the magnetizing is involved, are ordinarily independent of any particular structure of manipulation of the magnetic separator, unless it be adjustment of strength to the developed magnetic properties. Demagnetizing may be applied to prepare for a gravity or other separation, as by destroying coherence between particles which interferes with gravity or other separation.
(2) Note. For processes directed to the mere chemical (i.e., molecular) conversion of a substance or of one or more ingredients in a material, and the related apparatus, see the appropriate chemical classes particularly Classes 75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, etc..; 266, Metallurgical Apparatus; and 423, Chemistry of Inorganic Compounds. Processes including both a chemical reaction and a magnetic separation are classified in the appropriate chemical class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
213, through 232, for separation of solids by magnetic attraction of materials responsive to the attraction from other materials not responsive or responsive to a lesser degree.
SEE OR SEARCH CLASS 75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, etc., (see (2) Note).
