dust flue
61Pulverised fuel ash — (shortened to PFA), is a by product of pulverised fuel (typically coal) fired power stations. The fuel is pulverised into a fine powder, mixed with heated air and burned. Approximately 18% of the fuel forms fine glass spheres, the lighter of… …
62Environmental impact of oil shale industry — includes the consideration of issues such as land use, waste management, and water and air pollution. Surface mining of oil shale deposits has all the environmental impacts of open pit mining. In addition, the combustion and thermal processing… …
63Tobacco products — After the agricultural product, tobacco, has been processed. It can produce a number of products. Consumable Chewing tobacco Chewing is one of the oldest ways of consuming tobacco leaves. Native Americans in both North and South America chewed… …
64cement — cementable, adj. cementer, n. cementless, adj. /si ment /, n. 1. any of various calcined mixtures of clay and limestone, usually mixed with water and sand, gravel, etc., to form concrete, that are used as a building material. 2. any of various… …
65rhenium — /ree nee euhm/, n. Chem. a rare metallic element of the manganese subgroup: used, because of its high melting point, in platinum rhenium thermocouples. Symbol: Re; at. no.: 75; at. wt.: 186.2. [1920 25; < NL, equiv. to L Rhen(us) RHINE + ium IUM] …
66Environmental impact of the oil shale industry — Kiviõli Oil Shale Processing Chemicals Plant in Ida Virumaa, Estonia Environmental impact of the oil shale industry includes the consideration of issues such as land use, waste management, and water and air pollution caused by the extraction and… …
67Gallium — Infobox galliumGallium (pronEng|ˈgæliəm) is a chemical element that has the symbol Ga and atomic number 31. A soft silvery metallic poor metal, gallium is a brittle solid at low temperatures but liquefies slightly above room temperature and will… …
68Sulfur — This article is about the chemical element. For other uses, see Sulfur (disambiguation). phosphorus ← sulfur → chlorine …
69Convection — This figure shows a calculation for thermal convection in the Earth s mantle. Colors closer to red are hot areas and colors closer to blue are cold areas. A hot, less dense lower boundary layer sends plumes of hot material upwards, and likewise,… …
70Kitchen — For other uses, see Kitchen (disambiguation). A modern Western kitchen A kitchen is a room or part of a room used for cooking and food preparation. In the West, a modern residential kitchen is typically equipped with a stove, a sink with hot and… …
