Assertion: phosphoric acid's impurity | /r/CapableOf | spend acid
Facets:
value: from acids
type: OTHER
value: from metal finishing operations
type: OTHER
value: from spent catalysts
type: OTHER
Source sentences:
text: When the impurities normally associated with wet-process or spent acids are present, the impure acid can withstand very substantial cooling, well into the supersaturation region, before crystallization occurs.
text: In accordance with the process of this invention, impure phosphoric acid containing impurities which interfere with crystallization (such as wet-process phosphoric acid, spent acids from metal finishing operations and acids from spent catalysts) having a solids content below about 5% and preferably below about 3%, is subjected to crystallization under controlled conditions of agitation, temperature and crystal seeding.
text: In accordance with the process of this invention, impure phosphoric acid containing impurities which interfere with crystallization (such as wet-process phosphoric acid, spent acids from metal finishing operations and acids from spent catalysts) having a solids content below about 5% and preferably below about 3%, is subjected to crystallization under con­trolled conditions of agitation, temperature and crystal seeding.
text: When the impurities normally associated with wet-process or spent acids are present, the impure acid can withstand very substantial cooling, well into the supersaturation region, before crystallization occurs.