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

Petkof, Benjamin
Gallium,   pp. 359-361 ff. PDF (250.8 KB)


Page 361

GALLIUM 
Table 4.—U.S. imports for consumption of gallium 
(unwrought, waste and scrap), by country 
361 
Country 
1978 
1979 
Kilograms 
Value 
Kilograms 
Value 
Canada                                
Czechoslovakia                           
Germany, Federal Republic of                 
Hungary                               
Italy                                  
Japan                                 
Netherlands                             
Switzerland                             
UnitedKingdom                          
Total                              
75 
~ 
748 
37 
100 
~ 
2,628 
133 
$32,608 
~ 
339,806 
13,629 
31,500 
~ 
1,082,700 
45,023 
450 
53 
218 
59 
~ 
41 
41 
5,498 
41 
$203,431 
16,201 
85,716 
17,526 
~ 
22,452 
17,180 
2,289,820 
19,228 
3,721 
1,545,266 
6,401 
2,671,554 
WORLD REVIEW 
 Data on world consumption and produc. tion of gallium are not available.
However, significant quantities of gallium metal and compounds are probably
consumed by countries with large, well-developed electronic 
and electrical industries. Based on 1978 and 1979 U.S. imports of gallium,
the rest-ofworld gallium production probably increased significantly. 
TECHNOLOGY 
 A solar cell was described that converts sunlight into electricity with
a 28.5% conversion efficiency. A mirror focused solar energy on a special
filter that splits incoming light waves into low-energy long light waves
and high.energy short light waves. The lower energy waves are directed to
a silicon cell, and the high.energy waves pass through the filter to an aluminum-gallium
arsenide conversion cell. Conversion efficiency was improved because the
two-cell system used a wider range of light energy.2 
 A recent paper reviewed the supplydemand situation for gallium and also
discussed recovery technology.~ Gallium extraction from an alkaline aluminate
solution obtained from the recovery of aluminum from nepheline ore was described.4
iphysi~ scientist, Section of Nonferrous Metals. 2The Energy Daily. Efficiency
Breakthrough. V. 6, No. 
132, July 11, 1978, p.4. 
 3Rosi, F. D. A Survey of the Market, Supply and Availability of Gallium.
University of Va., Charlottesville, Va. Oct. 1, 1979,35 pp. 
 4Badaliants, K. A., et al. Extraction of Gallium From an 
Alkaline Aluminate Solution Formed in the Extraction of 
Aluminum From Nepheine Ore. U.S. Pat. 4,152,227, May 
1, 1979, 10 pp. 


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