Chemical heat generating compsn. - contg. iron powder, activated carbon and wood powder

摘要

The compsn. which generates heat on exposure to air is made by (a) forming a mixt . of approx. 63% fine particle iron of high purity, 9% activated carbon, 4% fine particle wood powder or sawdust; (b) mixing the ingredients in a silo in a completely inert atmos. to avoid all contamination; (c) subjecting the mixt. to mechanical agitation, either in the silo or in a suitable container; and (d) adding hydrated sodium salts and the required water to the mixt..