C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
53/105, 117/47.7
C08K 9/04 (2006.01) C01F 11/02 (2006.01) C04B 2/02 (2006.01) C08K 3/22 (2006.01) C21C 1/02 (2006.01) C21D 1/02 (2006.01)
Patent
CA 1140816
Abstract of the Disclosure The invention provides a process for the production of treated lime, sometimes known as tempered lime, and a treated lime resulting from the process. The material is particularly suitable for use in the desulphurisation of iron. Lime in small lump form is comilled together with only from 0.1 to 0.5% by weight of a non-aqueous liquid surfactant, preferably a silicone surfactant of between 20 and 100 centistokes viscosity. The material is of enhanced flowability, having an angle of repose of between 38° and 30° and does not bridge or plug in the equipment employed to deliver it into the liquid iron bath. The comilling may be by a hammer mill with the mixed material fed thereto by a worm screw conveyor mixer. The invention also provides a process for the desulphurisation of iron employing such a treated lime material.
338221
Beachvilime Limited
Hirons & Rogers
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