refining sieve

См. также в других словарях:

• petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

• separation and purification — ▪ chemistry Introduction       in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… …   Universalium

• Fluid catalytic cracking — (FCC) is the most important conversion process used in petroleum refineries. It is widely used to convert the high boiling hydrocarbon fractions of petroleum crude oils to more valuable gasoline, olefinic gases and other products.cite book|author …   Wikipedia

• Gunpowder — For other meanings, see gunpowder (disambiguation). Black powder for muzzleloading rifles and pistols in FFFG granulation size. Coin (diameter 24 mm) for comparison. Gunpowder, also known since in the late 19th century as black powder, was the… …   Wikipedia

• Derbyshire lead mining history — Goodluck Mine in Via Gellia. This article details some of the history of lead mining in Derbyshire, England. Contents 1 …   Wikipedia

• candy — candylike, adj. /kan dee/, n., pl. candies, v., candied, candying. n. 1. any of a variety of confections made with sugar, syrup, etc., often combined with chocolate, fruit, nuts, etc. 2. a single piece of such a confection. 3. Slang. cocaine. v.t …   Universalium

• Candy — /kan dee/, n. a female given name. * * * Sweet sugar or chocolate based confection. The Egyptians made candy from honey (combined with figs, dates, nuts, and spices), sugar being unknown. With the spread of sugarcane cultivation in the 15th… …   Universalium

• wood — wood1 woodless, adj. /wood/, n. 1. the hard, fibrous substance composing most of the stem and branches of a tree or shrub, and lying beneath the bark; the xylem. 2. the trunks or main stems of trees as suitable for architectural and other… …   Universalium

• Wood — /wood/, n. 1. Grant, 1892 1942, U.S. painter. 2. Leonard, 1860 1927, U.S. military doctor and political administrator. * * * I Hard, fibrous material formed by the accumulation of secondary xylem produced by the vascular cambium. It is the… …   Universalium

• Mining in the Upper Harz — The headframe of the Emperor William Shaft in Clausthal is one of the oldest surviving winding towers in Germany …   Wikipedia

• Natural selection — For other uses, see Natural Selection (disambiguation). Part of a series on Evolutionary Biology …   Wikipedia