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Bureau of Mines / Minerals yearbook metals, minerals, and fuels 1972
Year 1972, Volume 1 (1972)
Chin, E.
Magnesium compounds, pp. 747-755 ff.
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Page 747
747Magnesium Compounds ByLChin1 World production of magnesite in 1972, excluding production in the United States, was estimated to be 9,764,474 short tons, a decrease of 2% from world production in 1971. Magnesite production in Austria, Czechoslovakia, North Korea, People's Republic of China, and the U.S.S.R. accounted for 71% of the total world output. The increase in the world production capacity for recovering magnesia from sea water, however, continued to exert competitive pressure on producers of magnesite. Refractory magnesia and caustic-calciried and specified magnesias sold or used by domestic producers in 1972 were 9% above that sold or used in 1971. The value of domestic shipments of magnesias rose 10% to $76,187,000. U.S. imports for consumption of processed magnesite were 133,734 tons; imports from Greece accounted for 58% of the 1972 total. Exports of magnesite and magnesia were 61,196 tons in 1972, and as in the 1970—71 period were primarily to Canada. Table 1.—Salient magnesium compounds statistics (Thousand short tons and thousand dollars) 1968 1969 1970 1971 1972 United States: Caustic-calcined and specified magnesias:' Shipments: Quantity Value 119 $17,958 125 $19,876 122 $19,301 127 $18,621 128 $15,856 Exports: 2 Value Imports for consumption: 2 Value $2,301 $758 $2,687 $983 $3,200 $702 $2,840 $736 $3,377 $675 Refractory magnesia: Sold and used by producers: Quantity Value Exports: Value ' 661 $44,535 $4,706 737 $51,843 $4,973 802 $60,333 $9,133 627 $50,359 $5,897 696 $60,331 $5,903 Imports: Value Dead-burned dolomite: $6,179 $5,913 $7,357 $9,219 $9,300 Sold and used by producers: Quantity Value World: Crude magnesite production: Quantity 1,833 $31,627 11,781 1,866 $33,580 10,627 1,373 $25,740 9,763 1,020 $19,128 9,975 1,t25 $21,097 9,764 Excludes caustic-calcined magnesia used in production of refractory magnesia. 2Causticcalcined magnesia only. DOMESTIC PRODUCTION In 1972, 909,428 short tons of magnesium hydroxide was produced from sea water and well brines. Output was by Barcroft Co., The Dow Chemical Company, Kaiser Aluminum & Chemical Corp., Merck & Co., Inc., and Michigan Chemical Corp. Most of the magnesium hydroxide was used in the production of magnesia for basic refractories. Producers of refractory magnesia were Basic Inc., Basic Magnesia, Inc., Corchem, Inc., A. P. Green Refractories, Co., Harbison-Walker Refractories Co., Kaiser Aluminum & Chemical Corp.. Martin-Marietta Chemicals (formerly Stand1 Physical scientist, Division of Nonferrous Metals.
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