Bureau of Mines / Minerals yearbook: Metals, minerals, and fuels 1972
Year 1972, Volume 1 (1972)
Brown, Brinton C.
Cement, pp. 247-287 ff. PDF (4.5 MB)
DOMESTIC PRODUCTION Daily clinker capacity, December 31 Number Total Percent Short tons per 24-hour period of plants' Kilns' capacity of total capacity 1971: Less than 600 600 to 1,150 1,150 to 1,700 1,700 to 2,300 2,300 to 2,800 2,800 and over Total 1972: 6 49 65 28 11 11 10 98 170 95 37 56 2,671 40,455 88,927 54,303 28,734 41,772 1.0 15.8 34.6 21.1 11.2 16.3 170 466 256,862 100.0 Less than 600 600tol,150 1,150 to 1,700 1,700 to 2,300 2,300 to 2,800 2,800 and over 10 47 60 29 9 14 17 93 175 78 31 68 4,860 40,646 80,808 55,384 22,646 52,073 1.9 15.9 31.5 21.6 8.8 20.3 Total 169 461 256,417 100.0 MINERALS YEARBOOK, 1972' Includes white-cement-producing facilities.Total number in operation at plants.252 ment was installed or under construction by the following companies with dollar values in millions, if announced: American Cement Corp. at Detroit, Mich. (3.1); Colonial Sand and Stone Co. at Kingston, N.Y. (2.5); Gifford-Hill & Co. Inc. at Midlothian, Tex., and Harleyville, S.C. (3.5); Kaiser Cement & Gypsum Co. at Waianae, Hawaii (0.4); Lehigh Portland Cement Co. at Alsen, N.Y. (4.0), and Mason City, Iowa (2.0); Louisville Cement Co. at three PORTLAND CEMENT Manufacturers in the United States and Puerto Rico produced 77,378,000 tons of clinker and imported 1,691,000 tons of foreign clinker to grind an alltime record 80,744,000 tons of portland cement. Domestic producers shipped 8-1,432,000 tons of portland cement which included 1,512,000 tons of imported cement. Stocks increased about 600,000 tons. In addition to the imported cement shipped by domestic manufacturers, 1.6 -million tons of portland cement was imported and shipped or used by others not producing cement in the United States and Puerto Rico. Production Capacity.—Four new kilns were brought into production with a combined annual capacity of 1.5 million tons, and five old kilns were reactivated at four plants in 1972. However, 13 old kilns were permanently removed from production at four plants by yearend and the total annual production capacity remained vir plants (44); Marquette Cement Manufacturing Co. at several plants (6.7); Medusa Corp. at Clinchfield, Ga. (3.9); Huron Portland Cement Div. of National Gypsum Co. at Alpena, Mich. (2.5); OKC Corp. at Pryor, Okia., and New -Orleans, La.; Univernal Atlas Cement Div. of United States Steel Corp. at Hannibal, Mo., Waco, Tex., and Independence, Kans.; and Wyandotte Cement, Inc., at its grindi-ng plant in Wyandotte, Mich. (0.75). tually the same as in 1971. At yearend 461 kilns were in operation at 169 plants in 41 States and Puerto Rico with an estimated 24-hour-daily clinker production capacity of 256,000 tons. An average of 31 days downtime was reported for kiln maintenance and replacing refractory bricks, so based on 3-34 days of operation, the apparent annual clinker production capacity of the industry was 85.4 million tons. In addition to 169 clinker-producing plants, including eight white cement facilities, six plants operated grinding mills only, on imported, purchased, or interplant transfers of clinker. Information was not collected on grinding capacity, but the total in the United States and Puerto Rico was estimated to be 94 million tons. The following tabulation sho-ws the daily clinker production capacities of cement plants in the United States and Puerto Rico, grouped according to relative size:
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