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Title:
SAND FOR SNOW-MELTING
Document Type and Number:
Japanese Patent JPS62297380
Kind Code:
A
Abstract:

PURPOSE: To obtain the titled sand having high absorption efficiency of solar heat and excellent snow-melting effect, by granulating powder of fly ash, slag, etc., and coloring the obtained sand in black color.

CONSTITUTION: The objective sand can be produced by mixing powder such as fly ash, slag, etc., with e.g. cement and water, granulating the mixture with a high-speed mixer, etc., to granules of about 0.15W5mm in diameter and coloring the obtained and in black color with 3W20% ash containing large amount of unburnt carbon.


Inventors:
YAMAMOTO TADASHI
Application Number:
JP13918486A
Publication Date:
December 24, 1987
Filing Date:
June 17, 1986
Export Citation:
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Assignee:
TOHOKU ELECTRIC POWER CO
International Classes:
C09K3/18; (IPC1-7): C09K3/18
Domestic Patent References:
JPS6153382A1986-03-17
JPS59108080A1984-06-22
JPS58183782A1983-10-27
Attorney, Agent or Firm:
Takehiko Suzue



 
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