Use of rod mill for initial stage of solder glass grinding

Details Use of rod mill for initial stage of solder glass grinding Use of rod mill for initial stage of solder glass grinding

1980-11-13

1983-09-13

Abercrombie, Willie G.

Solid material comminution or disintegration

Processes

Plural successive comminuting operations

241 30, 241152A, 241170, 241184, 429218, B02C 1720, B02C 1912

Patent

active

044037422

ABSTRACT:
A dramatic reduction in the time required to fine-grind high borate solder glasses is achieved. In the prior art method, the glass is ball-milled in the presence of an amine for about seven days or more. It has now been discovered that by first rod-milling such glasses for a period of from about 1/2 to about 24 hours, the time required for the "amine grind" can be shortened to a period of from about 1 to 3 days. A further improvement is that rod milling eliminates the laborious sieving procedure previously employed to ensure the absence of undesirably large particles in the feed to the amine grinding operation.

REFERENCES:
patent: 2210357 (1940-08-01), Beament
patent: 2232696 (1941-02-01), Earle
patent: 3022017 (1962-02-01), McKenna
patent: 3269668 (1966-08-01), Hall
patent: 3353753 (1967-11-01), Wolfgram
patent: 3486706 (1969-12-01), Weyand
patent: 3521825 (1970-07-01), Morcom
patent: 3917490 (1975-11-01), Brown
"Action in a Rod Mill", Engineering & Mining Journal, vol. 161, No. 3, pp. 82-85.

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