PROCESS OF PRODUCTION OF MAGNETIC LIQUID Russian patent published in 2002 - IPC

Abstract RU 2182382 C1

FIELD: production of magnetic liquids. SUBSTANCE: invention is related in particular to synthesis of key component of magnetic liquid-highly dispersed magnetite. Process of production of magnetic liquid includes formation of magnetite suspension by way of mixing of hydroxide Fe²⁺ won from pickling solution by precipitation with ammonium hydroxide and of hydroxide Fe³⁺, coating of surface of magnetic particles by adsorbing layer of stabilizing substance, heating up of suspension of magnetic particles with layer of stabilizing substance adsorbed on them, separation of fraction carrying stabilized magnetic particles in liquid carrier from suspension. Hydroxide of trivalent iron formed in the capacity of waste of clearing of sewage of electroplating shops is utilized as hydroxide Fe³⁺ to produce magnetic ferrophase. EFFECT: increased stability of magnetic liquid. 1 tbl

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RU 2 182 382 C1

Authors

Makarov V.M.

Jusova A.P.

Shipilin A.M.

Mel'Nikov G.M.

Kalaeva Sakhiba Zijaddin Kzy

Dates

2002-05-10—Published

2001-01-23—Filed