The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 1981
Filed:
Jan. 22, 1979
Phillip S Stewart, Beaumaris, AU;
Jeremy J Lees, Birchgrove, AU;
Woodsreef Mines Limited, Barraba, AU;
Abstract
String-like agglomerates of chrysotile asbestos fibers are recovered from crude asbestos by first forming a stable gel structure of asbestos and dispersing agent, diluting the gel structure dispersion with water in a first dilution step to form a readily pourable dispersion without dilution of the concentration of dispersing agent to a level insufficient to maintain the asbestos fibrils in a dispersed state, and then, in a second dilution step, rapidly diluting the dispersion with water to reduce the concentration of dispersing agent to a level insufficient to maintain the dispersion, thereby forming agglomerates of the fibrils. Preferably, the dispersion is subjected to an orienting flow during or immediately after the second dilution step to form string-like agglomerates.