Gannister, Ganister n. (Mech.) A refractory material consisting of crushed or ground siliceous stone, mixed with fire clay; used for lining Bessemer converters; also used for macadamizing roads.
... that the commercial operation at Sheffield was based on the use of the best Swedish pig iron and the hematite pig from Workington. The use of manganese as standard practice at this time is not referred to,[70] but the rotary converter and the use of ganister linings are mentioned ... — The Beginnings of Cheap Steel • Philip W. Bishop
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