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The portion of an original liquid that remains after other components have been dissolved by a solvent.

[French raffiner, to refine; see raffinose + -ate.]


(Chemistry) the liquid left after a solute has been extracted by solvent extraction
[C20: from French raffiner to refine + -ate1]
References in periodicals archive ?
If these long-term heat generating actinides can be efficiently removed from the used fuel raffinates, the volume of material that can be placed in a given amount of repository space can be significantly increased.
7] in technical grade (purity [greater than or equal to] 99%) were supplied as raffinates of aromatic removing units of petrochemical complexes in Iran.
The company's products include Butadiene, Butene-1, MTBE and C4 Raffinates, which are major raw materials of downstream petrochemical processes such as the manufacturing of synthetic rubbers and plastic resins.
The balance of the crude is sold as raffinates, which are used as gasoline octane enhancers in the petroleum fuel industry.
Applications have been developed for many base metals and include the removal and refining of copper, cobalt and nickel from zinc and copper electrolytes, raffinates or bleed streams; the recovery of copper, zinc, nickel, manganese, iron and other metals from acid mine streams; and the removal of impurities such as bismuth, antimony, germanium, fluoride, and chloride from copper and zinc refinery streams.
The two raffinates are similar in copper content, but there is a reduction of copper extraction of approximately 6% to 7% as compared to the simple 2 + 1 counter-current used in the series plant.