Granular bitumen coated with precipitated silica

Details Granular bitumen coated with precipitated silica Granular bitumen coated with precipitated silica

1993-07-13

1995-01-17

Myers, Helane

Mineral oils: processes and products

Products and compositions

Asphalts, tars, pitches and resins

208 39, 1062811, B32B 1104, B32B 1112, C08L 9500

Patent

active

053823486

ABSTRACT:
Bitumen granulate containing from 0.5 to 15% by weight, preferably from 6.1 to 15% by weight, of a powdering and separating agent such as, for example, synthetic silica or carbon black is produced by atomizing hot, liquid bitumen in a spray mixer and at the same time introducing the powdering and separating agent into the spray mixer by way of the stream of cold air.

REFERENCES:
patent: 1979251 (1933-03-01), Chapline et al.
patent: 2400563 (1942-10-01), Mark
patent: 2459520 (1944-08-01), Greenshields
patent: 3235482 (1966-02-01), Knowles et al.
patent: 3235483 (1966-02-01), McCoy et al.
patent: 5053279 (1991-10-01), Daniels et al.

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