专利名称：METHOD OF TREATING WASTES申请号：JP15901877申请日：19771228公开号：JPS5653438B2公开日：19811218
摘要：PURPOSE:To produce a solidified body of waste such as sludge free of harmfulmatter easily at a low cost through fusing thereof by heat with simultaneous addition ofthree substances -- boron, silicon and alkali metal or alkaline earth metal respectively inthe form of compound. CONSTITUTION:The three substance -- the one mainly composedof boric acid or a salt thereof (for instance, borax, line borate, and colemanite ore etc.),the one mainly composed of silicic acid or copper cilicate (for instance, silica sand, glassdust) and the one mainly composed of alkali metal or alkaline earth metal (for instance,sodium lime, sodium chloride, and lime) are added to a waste such as sludge respectivelyat a rate of 0.5 to 50 part by weight in terms of boric acid, 2 to 100 part in terms of silicicacid, and 2 to 100 part of alkaline metal compounds with respect to 100 part by weight ofash content in the waste and then, fused by heat (for example, up to 700 to 1,500 deg.C).
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