Plastic and nonmetallic article shaping or treating: processes – Spheroidizing or rounding of solid particles
Patent
1994-08-29
1996-05-28
Dawson, Robert A.
Plastic and nonmetallic article shaping or treating: processes
Spheroidizing or rounding of solid particles
264117, 264118, 264122, 264140, B29B 916
Patent
active
055208606
ABSTRACT:
To prepare a compacted, granular sodium silicate having an SiO.sub.2 /Na.sub.2 O molar ratio of 1.7:1 to 4.1:1, sodium silicate having a median particle diameter of <500 .mu.m is first mixed with a material increasing its hardness before being converted into pressed granules having particle sizes of 0.1 to 5 mm by compacting, comminution and screening.
REFERENCES:
patent: 3687640 (1972-08-01), Sams et al.
patent: 3931036 (1976-01-01), Pierce
patent: 4218502 (1980-08-01), Graham et al.
patent: 4703029 (1987-10-01), Rieck et al.
patent: 5236682 (1993-08-01), Schimmel et al.
Advanced Inorganic Chemistry, F. Albert Cotton et al., .COPYRGT.1980, p. 389 "Infinite Sheet Anions".
Noltner Gerhard
Rieck Hans-Peter
Schimmel Gunther
Tapper Alexander
Dawson Robert A.
Hoechst AG
Jones Kenneth M.
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