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So the phosphorus which used to be a detriment is now an
additional source of profit and this British invention has enabled
Germany to make use of the territory she stole from France to outstrip
England in the steel business. In 1910 Germany produced 2,000,000 tons
of Thomas slag while only 160,000 tons were produced in the United
Kingdom. The open hearth process now chiefly used in the United States
gives an acid instead of a basic phosphate slag, not suitable as a
fertilizer. The iron ore of America, with the exception of some of the
southern ores, carries so small a percentage of phosphorus as to make a
basic process inadvisable.
Recently the Germans have been experimenting with a combined fertilizer,
Schroeder's potassium phosphate, which is said to be as good as Thomas
slag for phosphates and as good as Stassfurt salts for potash. The
American Cyanamid Company is just putting out a similar product,
"Ammo-Phos," in which the ammonia can be varied from thirteen to twenty
per cent. and the phosphoric acid from twenty to forty-seven per cent.


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