The Ore and Mining Industries

Different rubber compounds are used in the manufacture of floatation cell rubber components for various corrosion and abrasion duty conditions. Floatation as applied to mineral processing is a process of concentration of finely divided ores in which the valuable and worthless minerals are completely separated from each other. Concentration takes place from the adhesion of some types of solids to air bubbles and wetting of the 

De Silver, The Seattle Times Business and Technology, Seattle, USA, November 23, 2004. 

Paint Bulletin — PB-13, Elastomer Chemicals Department, El Dupont De Nemours Sc Co., Inc., Wilmington, DE, USA, 1960. 

Jacobson, Corrosion — A Natural and Controllable Process - Corrosion 101, 

Materials selection, Agriculture and Principles sections, NACE Resource Centre, http //events.nace.org/library/libraryindex.asp. 

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Iron ore production for the iron and steel industry accounts for more than 99% of the total iron mined. At present, the largest iron ore mine in the world is Mount Whaleback in the Pilbara district of Western Australia. Most of the ore there is in the form of banded iron formations (BIF) and consists of hematite and goethite. 

From these early developments the iron and steel industry has grown to a world production of iron ore, based on iron content, exceeded 600 million tonnes in 2000 (Table 14.1). While the major producers of ore are generally also major producers of pig iron, this is by no means universally true. Sweden, Australia, Brazil, Canada, and India each mine and process more iron ore than the pig iron they produce. Japan and Germany currently import nearly all of their iron ore. The U.S. depends on imported ores for about one-third of its requirements, which has been fairly steady for some time. 

The 85 X 85 matrix in Table 4.4a contains a wealth of information useful to the chemical professional. Tables 4.6-4.8, which illustrate several important aspects of the sales patterns found in the United States, are typical examples. There is a wide variation among industries in the proportion of total output going to final demand. Some industries (e.g., construction [11 and 12], food and kindred products [14], apparel [18], furniture and fixtures [22 and 23]) sell most of their products directly to final demand. Other industries (e.g., nonmetallic minerals [9 and 10], lumber and wood products [20 and 21], metallic ores mining [5] metal containers [39]) sell practically all their output to intermediate consumers. The CPI and related industries fit mostly in the latter category (Table 4.6). 

My friend, David Browne of Coppercliff, Ontario, was seeking information about his copper ore from the Coppercliff Mine. He sent samples to a number of assayers, and among others, to Mrs. Richards. All the others returned results in copper, and, I dare say, they did not know that they were to look for anything else. She, on the other hand, gave him a percent of copper in the ore and also reported five percent of nickel. This, I believe, was the beginning of the great nickel industry of which Coppercliff Mine was the center. David Browne always said that Mrs. Richards was the best analyst in the United States. ... 

From an economic point of view, today the majority of lithium-carbonate production comes from lithium-rich brines spodumene and, to a lesser extent, petahte ore concentrates are only mined for use in the glass and ceramic industries. Five major companies control the world s supply of lithium-mineral concentrates. 

Ore, T. 1992, Micro-economic reform and occupational health and safety a study of the Australian coal mining industry . Journal of Occupational Health and Safety—ANZ, vol. 8, no. 2, pp. 155-65 Oxenburgh, M. 1991, Increasing Productivity and Profit through Healdj and Safety, Sydney CCH International... 

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