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)
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 $117.35 W 83.71 W 111.27 5,400 CONSUMPTION AND USES withdrawn from system" amounted to 183,000 short tons on an anhydrous basis in 1978 and 188,000 tons in 1979.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
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