Assertion: dilute phosphoric acid | /r/CapableOf | spray heated liquid
Facets:
value: to evaporate water
type: PURPOSE
Source sentences:
text: Thermethod of purifying and concentrating raw dilute phosphoric acid which comprises heating the acid in a closed container to a point below ebullition, spraying the heated liquid into contact with a blast of warm' air to evaporate water from said liquid and to cool the same and separating out the precipitates thrown down by said concentration and cooling.