| 摘要 |
PCT No. PCT/SE93/00017 Sec. 371 Date Jul. 11, 1994 Sec. 102(e) Date Jul. 11, 1994 PCT Filed Jan. 15, 1993 PCT Pub. No. WO93/14270 PCT Pub. Date Jul. 22, 1993.A method and device scatter preheated sand, urea, road salt, etc. from a spreading vehicle onto runways and roads to counteract slipperiness caused by snow, ice, sleet, mud and the like. Preheating of the material is by an electronically controlled LP-gas driven burner in close association with feeding of the material from the spreading vehicle to the surface which is to be treated. Flames from the burner have direct contact with the material being preheated. The process can be remotely controlled from the driver cabin of the spreading vehicle. The heating system can be conveniently mounted to an existing spreading vehicle.
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