Bureau of Mines / Minerals yearbook: Metals, minerals, and fuels 1972
Year 1972, Volume 1 (1972)
Merwin, Roland W.
Sulfur and pyrites, pp. 1175-1190 PDF (1.7 MB)
I I7~ MINERALS YEARBOOK, 1972' Revised.' Hydrogen sulfide and liquid sulfur dioxide. DOMESTIC PRODUCTION Native Su1fur~—Native sulfur accounted for 72% of the domestic production of sulfur in all forms. All of it was produced from Frasch mines in Texas and Louisiana. No sulfur ore production was reported during the year. In 1972, 13 Frasch mines produced sulfur; one of these was closed during the year. The producers and mines in Louisiana were Freeport Minerals Co. at Garden Island Bay, Grand Isle, Grand Ecaille, and Lake Pelto; Jefferson Lake Sulphur Co. at Lake Hermitage (closed in March); and Texas Gulf, Inc., at Bully Camp. The producers and mines in Texas were Atlantic Richfield Co. at Fort Stockton; Duval Corp. at Pecos; Jefferson Lake Sulphur Co. at Long Point Dome; and Texas Gulf, Inc., at Boling Dome, Fannett Dome, Moss Bluff Dome, and Spindletop -Dome. Production of domestic Frasch sulfur increased in 1972, being 4% more than that of 1971 and only 2% lower than the alltime peak production in 1968. This was a reflection of a substantial increase in the demand for sulfur in both domestic and foreign markets. There was a continuing tendency to concentrate production in the larger low-cost mines to counteract the adverse effects of low sulfur prices. During 1969, nine producers operated 21 mines, By yearend 1972, this was reduced to five producers operating 12 mines. Based on the normal production rates prior to closing, these nine closures (two in 1969, five in 1970, one in 1971, and one in 1972) represented an ap parent reduction in production potential of slightly more than 1 million tons per year. The 12 mines remaining in operation at the end of 1972 increased their production over that of 1969 by 1,013,000 tons, or 16%, and over that of 1971 by 369,000 tons, or 5%. Seven of the mines showed increases in production rates over those during 1971, and the other five registered decreases. The five largest mines, with pro. duction rates in excess of 1/2 million tons per year each, accounted for 73% of the total Frasch sulfur output for the year. Four medium-size mines, with production rates of more than 250,000 tons per year each, contributed an additional 19% of the year's production. The remaining 8% of the output came from four smaller mines, one of which closed during the year. Ten mines, operated by the Duval Corp., Freeport Minerals Co., and Texas Gulf, Inc., accounted -for most of the production. Only a relatively small portion of the output was obtained from the other two pro. ducers, operating three mines. By yearend, this was reduced to two companies with one mine each. Producers' shipments of Frasch sulfur increased by 13% over those in 1971 as a re~ sult of improved demand for domestic consumption and export. The shipments exceed production by 323,000 tons, or 4%, with the shortage being met by withdrawals from producers' stocks. Approximately 76% of the shipments were for domestic consumption and 24% ' for export. Table 2.—Production of sulfur and sulfur-containing raw materials by producers in the United States (Thousand long tons) 19 Gross weight 69 Sulfur content 19 Gross weight 70 Sulfur content 19 Gross weight 71 Sulfur content 19 Gross weight 72 Sulfur content Fraschsulfur Recovered elemental sulfur Byproduct sulfuric acid (basis 100%) produced at Cu, Zn, and Pb plants Pyrites Other forms' Total 7,146 1,422 1,583 821 ' 149 7,146 ' 1,422 517 334 r126 7,082 1,457 1,642 845 ' 161 7,082 ' 1,457 537 339 r142 7,025 1,595 1,585 808 ' 149 7,025 ' 1,595 518 316 ' 126 7,290 1,928 1,669 741 173 7,290 1,928 546 283 149 r9,545 r9,557 ' 9,580 10,196
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