Automatic mix control system for limestone asphalt shingles

Details Automatic mix control system for limestone asphalt shingles Automatic mix control system for limestone asphalt shingles

B - Operations, Transporting

01

F

259/7

B01F 15/04 (2006.01)

Patent

CA 1173024

ABSTRACT OF DISCLOSURE ASPHALT COATING MIX AUTOMATIC LIMESTONE CONTROL The viscosity and amount of limestone in a limestone asphalt mixture (filled coating mixture) is determined sensing the density of the mixture which will indicate the percent of limestone in the mixture and also sensing the temperature of the mixture, and adjusting the ratio of limestone to asphalt to maximize this ratio relative to a pre-set ratio and adjusting the pre-set ratio in accordance with the temperature of the mixture when the temperature is below a pre-determined limit.

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