'Thomas slag' definitions:

Definition of 'Thomas slag'

From: GCIDE

Thomas phosphate \Thom"as phos"phate\ or Thomas slag \Thom"as slag\ . Same as Basic slag, above. [Webster 1913 Suppl.]

Definition of 'Thomas slag'

From: GCIDE

Basic slag \Basic slag\ A by-product from the manufacture of steel by the basic process, used as a fertilizer. It is rich in lime and contains 14 to 20 per cent of phosphoric acid. Called also Thomas slag, phosphatic slag, and odorless phosphate. [Webster 1913 Suppl.]

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