Method of producing open-pore sintered glass filters and product

Details Method of producing open-pore sintered glass filters and product Method of producing open-pore sintered glass filters and product

1989-03-14

1990-05-22

Lindsay, Robert L.

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65 183, 65 184, 65 22, 65 31, 2105101, 4283191, C03B 1908, B32B 326

Patent

active

049274422

ABSTRACT:
Filter bodies are made by mixing borosilicate glass powder, potassium sulphate and 30% aqueous polyethylene glycol solution per kilogram of mixture. The mixture is filtered and dried and glass particles of a different size are mixed into the dried granulate. The resulting mixture is compressed at a pressure of 1000 bar to form blanks and sintered at about 860.degree. C. After cooling, the potassium sulphate is washed out of the blanks.

REFERENCES:
patent: 1081573 (1913-12-01), Boeck
patent: 1515653 (1924-11-01), Bertelson
patent: 1863070 (1932-06-01), Schonfeldt et al.
patent: 3414394 (1968-12-01), Poad
patent: 3462252 (1969-08-01), Veres
patent: 3486872 (1969-12-01), Wojcik et al.
patent: 4588540 (1986-05-01), Kiefer et al.
International Standard ISO 3585, First Edition-1976-04-01 Glass Plant, Pipeline and Fittings-Properties of Borosilicate Glass 3.3.
International Standard ISO 4793, First Edition-1970-10-01 Laboratory Sintered (Fritted) Filters-Porosity Grading, classification and designation.

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