| 摘要 |
PURPOSE:To increase the rate of reaction of an alkaline powder remarkably, and to enable the lowering of the alkalinity to an arbitrary level by the adjustment of the water content, by adding water to the alkaline powder, and contacting the mixture with carbon dioxide gas to lower the alkalinity of the powder. CONSTITUTION:(A) 100pts.(wt.) of a powdery industrial waste exhibiting strong alkalinity such as ash is added with (B) 0.1-10pts. of water preferably in the form of mist. The mixture is mixed externally with (C) 0.1-10pts. of carbon dioxide gas under agitation to lower the alkalinity of the component A. The water may be fresh water or sea water, and the source of CO2 is preferably liquefied carbon dioxide, dry ice, or combustion gas of a fuel.
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