University of Wisconsin Digital Collections
Link to University of Wisconsin Digital Collections
Link to University of Wisconsin Digital Collections
Ecology and Natural Resources Collection

Page View

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

Kostick, Dennis S.; DeFilippo, Ronald J.
Fluorspar,   pp. 341-357 ff. PDF (1.9 MB)


Page 343

process manufacture of phosphoric acid remainder was used to make water fluoridafrom
phosphate rock. About 78% of the tion chemicals. The H,SiF6 shipments were
total shipments of H,SiF6 were consumed to the equivalent of about 80,000
tons of acidmake aluminum chemicals, principally alu- grade fluorspar. 
minum fluoride and synthetic cryolite; the 
Table 2 —Shlpments of finished fluorspar by State 
State 
Value 
Quantity Total Average 
(short (thou- per 
 tons) sands) ton 
 115,859 $12,452 
 13,569 809 
Value 
Quantity Total Average 
(short (thou- per 
 tons) sands) ton 
Table 3 
—Shipments 
and mine 
stocks of 
finished 
fluorspar 
in the 
United States by 
grade 
Grade 
~ 
1978 
1979 
Short 
tons 
Value1 
Value 
~ 
Yearend 
stocks 
Short 
tons 
Value' 
~ 
Value 
~ 
Yearend 
stocks 
Acid              Metallurgical 
Total 
274880 
54,548 
$8270 
4,991 
$11044 
91.50 
1162 
3,160 
W W 
$10512 
1,650 
129,428 
13,261 
102.46 
4,322 
109,299 
12,162 
W Withheld to avoid disclosing company proprietary data. ' Total value as
reported by mine production. ' Includes No. I ceramic grade. 
 $117.35 W 
 83.71 W 
 111.27 5,400 
CONSUMPTION AND USES 
withdrawn from system" amounted to 183,000 short tons on an anhydrous
basis
in 
1978 and 188,000 tons in 1979. Production of CFC's was a major use of HF,
accounting for about 30% of ths end use of this acid. According to data collected
by the U.S. International Trade Commission on select CFC's, the 1979 production
of Fli was 86,598 tons, the production of F12 was 
142,996 tons, and the production of F22 was 
105,919 tons. (Fil, F12, and F22 are industry designations for various CFC's.)
Compared to production in 1978, both Fil and F12, production decreased about
12%, but F22 production increased by 4%. The decline of fluorocarbons in
aerosols was being offset by the use of CFC's in refrigerants, foam-blowing
agents, and fluorinated solvents. 
 FLUORSPAR 343 
Illinois________________________ 
OtherStates' - 
 Total 129,428 
W Withheld to avoid disclosing company proprietary data. 
' Includes Arizona, Kentucky, Nevada, and Texas. 
 The hydrofluoric acid (HF) and steel industries accounted for about 52%
and 45%, respectively, of the 1979 domestic fluorspar demand. The American
Iron and Steel Iristitute (AISI) reported that total raw steel production
was 137,031,000 tons in 1978 and 135,889,000 tons in 1979. Comparing the
AISI data with fluorspar consumption data received by the Bureau of Mines
from the steel producers, the calculated fluorspar consumption rate for the
domestic steel industry in 1978 was 7.60 pounds per ton of steel produced,
compared with 8.30 pounds per ton in 1979. 
 Eight companies operating eleven plants produced HF during 1979. Most production
capacity was centered in the TexasLouisiana area. Data collected by the U.S.
Department of Commerce, Bureau of the Census, indicated that HF "produced
and 
 1978 1979 
 $107.48 W W $117.35 
 59.62 W W 83.70 
 13,261 102.46 109,299 $12,162 111.28 


Go up to Top of Page