solvent refining — The process of mixing a petroleum stock with a selected solvent, which preferentially disolves undesired constituents, separating the resulting two layer and recovering the solvent from the raffinate (the purified fraction) and from the extract… … Petroleum refining glossary
SX/EW — Solvent extraction/electrowinning (SX/EW) is a two stage process that first extracts and upgrades copper ions from low grade leach solutions into a concentrated electrolyte, and then deposits pure copper onto cathodes using an electrolytic… … Wikipedia
Recrystallization — (see also crystallization) is a physical process that has meanings in chemistry, metallurgy and geology.ChemistryIn chemistry, recrystallization is a procedure for purifying compounds. The most typical situation is that a desired compound A is… … Wikipedia
reaction mechanism — Introduction in chemical reactions (chemical reaction), the detailed processes by which chemical substances are transformed into other substances. The reactions themselves may involve the interactions of atoms (atom), molecules (molecule),… … Universalium
Coal liquefaction — is the process of producing synthetic liquid fuels from coal. Contents 1 Methods 1.1 Pyrolysis and carbonization processes 1.2 Hydrogenation processes 1.3 … Wikipedia
Fragrance extraction — refers to the extraction of aromatic compounds from raw materials, using methods such as distillation, solvent extraction, expression, or enfleurage. The results of the extracts are either essential oils, absolutes, concretes, or butters,… … Wikipedia
dye — dyable, dyeable, adj. dyer, n. /duy/, n., v., dyed, dyeing. n. 1. a coloring material or matter. 2. a liquid containing coloring matter, for imparting a particular hue to cloth, paper, etc. 3. color or hue, esp. as produced by dyeing. 4. of the… … Universalium
Decaffeination — Decaf redirects here. For the computer software program, see DECAF. Decaffeination is the act of removing caffeine from coffee beans, cocoa, tea leaves and other caffeine containing materials. (While caffeine free soft drinks are occasionally… … Wikipedia
Dimethyl ether — Systematic name … Wikipedia
copper processing — Introduction use of smelting or leaching, usually followed by electrolytic refining or recovery, to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of copper and of its… … Universalium
Superheated water — is liquid water under pressure at temperatures between the usual boiling point (100°C) and the critical temperature (374°C). It is also known as subcritical water and pressurised hot water. Superheated water referred to in this article is stable… … Wikipedia