Metal treatment agents

Details Metal treatment agents Metal treatment agents

1988-05-09

1989-07-18

Rosenberg, Peter D.

Alloys or metallic compositions

Ferrous

1.7 percent or more carbon containing

75 53, 75 58, C21C 702

Patent

active

048491659

ABSTRACT:
Metallurgical treatment agents for molten ferrous metals e.g. iron and steel and suitable for e.g. desulphurizing molten iron and steel comprise particulate magnesium coated with a first coating of a hydrophobic compound and a second coating of a particulate refractory material. The coated magnesium possesses improved flowability and is less prone to premature reaction when subjected to a high temperatures. The hydrophobic compound provides the magnesium with enhanced protection against hydration than may be obtained by a refractory coating alone.

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patent: 3957502 (1976-05-01), Cull
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patent: 4186000 (1980-01-01), Skach, Jr. et al.
patent: 4279643 (1981-07-01), Jackman
patent: 4541867 (1985-09-01), Neelameggham et al.
patent: 4553572 (1985-08-01), Neelameggham et al.
Patent Abstracts of Japan, vol. 1, No. 102(C-25<), [2288], Sep. 10, 1977, pp. 2288 C 77 & JP-A-52 63 811, (UBE Kosan KK) 26-05-1977.

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