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Bureau of Mines / Minerals yearbook: Metals and minerals 1978-79
Year 1978-79, Volume 1 (1978-1979)

Baumgardner, Luke H.; Hough, Ruth A.
Bauxite and alumina,   pp. 95-110 PDF (1.6 MB)


Page 110

110 MINERALS YEARBOOK, 1978-79 
TECHNOLOGY 
 The Federal Bureau of Mines continued its research program on the recovery
of alumina from clay, anorthosite, and other raw materials abundant in the
United States. The most promising technologies for extracting alumina were
being tested and developed in miniplants at the Bureau's Boulder City (Nev.)
Engineering Laboratory. Additional research in support of this effort was
being conducted at other Bureau research centers. The miniplant program was
initiated to evaluate the various processes on a comparative basis and to
obtain cost and engineering data for the design and possible operation of
a large-scale demonstration plant. Five companies were participating with
the Bureau in the miniplant project on a cooperative cost-sharing basis.
In 1979 the major emphasis of the miniplant project was on the hydrochloric
acid process for recovering alumina from clay. Test runs of several sections
of this miniplant were completed. 
 The second and third tasks of a threepart, $1.6 million contract awarded
by the Bureau to Kaiser Engineers in 1976 were completed. The third task
was for the design of a 25-ton-per-day alumina pilot plant based on the most
promising process as determined from the second task of the contract. 
 A contract, awarded by the Bureau to the Colorado School of Mines Research
Institute for a study on the environmental factors involved in metallurgical
processing utilizing domestic resources in the production of alumina was
completed. 
 ' Physical scientist, Section of Nonferrous Metals. 
 2Statistical assistant, Section of Nonferrous Metals. 
 3Mining Magazine. Bauxite Mining Developments in Hungary. V. 138, No. 1,
January 1978, p. 11. 
 4Metal Bulletin Monthly. No. 111, March 1980, pp. 21-31. 
 5Strishkov, V. V. Mineral Industries of the U.S.S.R. Mining Ann. Review,
1979, pp. 569-571. 
 6The Economics of Aluminium, First Edition. Roskill Information Service
Ltd., August 1979, p. 29. 


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