Process designed to substantially remove free fatty acids and other impurities such as phosphatides, proteinaceous and mucilagenous substances, which could contribute to undesirable flavor and appearance in the finished product
A step in the collective creation process during which choices are made and episodes are shaped and connected
{i} purification, filtration, distillation; act of making civilized, cultivation, improvement of manners or style
series of processes for converting crude oil and its fractions to finished petroleum products Following distillation, a petroleum fraction may undergo one or more additional steps to purify or modify it These refining steps include: thermal cracking, catalytic cracking, hydroforming, hydrogenation, hydrogen treating, hydrofinishing, solvent extraction, dewaxing, de-oiling, acid treating, clay filtration, and de-asphalting Refined lube oils may be blended with other lube stocks, and additives may be incorporated, to impart special properties; refined naphthas may be blended with alkylates, cracked stock or reformates to improve octane number and other properties of gasolines
the separation of the pure sugar from the impurities - invert sugars, inorganic matter, organic salts, gums, waxes, sugar lice and bacteria
(a) The removal of impurities and metallic oxides from the molten bath by the reaction of the slag and other additions (b) A heat treatment process with the object of refining or making the grain size of the steel uniform
After distillation the hydrocarbons still contain compounds with sulphur as well as other contaminants They are removed in subsequent refining by chemical-physical processes to improve quality
A second stage of oil production where crude oils (and this includes all vegetable oils) are subjected to combinations of heat, chemicals or enzyme treatments to correct problems of smell, discoloration or contamination
The process of removing the precious metals from the alloying metals to improve the purity of the precious metals
The final stage of metal production in which impurities are removed from the molten metal
Purifying the matte or impure metal undertaken to obtain a pure metal or mixture with specific properties
The process of reducing crude ore to its mineral or metal; such as gold sulfide to gold
A manufacturing process through which crude oil is turned into usable fuels and other products