Search results
Results from the WOW.Com Content Network
The preheater recuperates most of the heat in the combustion gases, dehydrates and de-hydroxylates the bauxite and de-carbonates the limestone. The calcined material drops into the "cool end" of the melt bath. The melt overflows the hot end of the furnace into molds in which it cools and solidifies. The system is fired with pulverized coal or oil.
The sale of "goop" replaced magnesium ingots and allowed PMC to finally turn a small profit on magnesium production. Kaiser engineers created "PT Mix," an incendiary compound for bombs consisting of 39% "microscopic magnesium dust", 10% asphalt, 5% distillate, 27% gasoline, 10% magnesium crystals, 5% sodium nitrate, 3% isobutyl methacrylate gel ...
Bauxite forms by the weathering of aluminum-rich and silica-poor rocks in hot, humid, climates, at places with good drainage. Under the proper conditions, weathering disintegrates the aluminium silicate minerals, and dissolves and removes the silica, creating bauxite. The mined US bauxite deposits have all been in the southeastern United States.
Oldcastle Materials Inc. is a supplier of asphalt, concrete, and other building materials, and also offers construction and paving services. The Atlanta-based company is a subsidiary of CRH plc, a publicly traded international group of diversified building materials businesses, [2] [3] and has approximately 18,000 employees at 1,200 locations, as of March 2018.
Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. Concrete is the most widely used material in existence and is behind only water as the planet's most-consumed resource.
World bauxite production in 2005 One of the world's largest bauxite mines in Weipa, in northern Queensland, Australia. Australia is the largest producer of bauxite, followed by Guinea and China. [8] Bauxite is usually strip mined because it is almost always found near the surface of the terrain, with little or no overburden.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Red mud near Stade Bauxite, an aluminium ore (Hérault department, France).The reddish colour is due to iron oxides that make up the main part of the red mud.. Red mud, now more frequently termed bauxite residue, is an industrial waste generated during the processing of bauxite into alumina using the Bayer process.