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2 107 025

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IPC

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Application

94007067/25, 1994-03-01

(22)

Actual filing date

1994-03-01

(45)

Published

1998-03-20

(72)

Inventor

Chumaevskij O.V.Chumaevskij V.A.Kapralov A.V.Mjakisheva E.A.

(73)

Holder

Nauchno-Proizvodstvennoe Tovarishchestvo

METHOD OF PREPARING ZINC NITRATE-PHOSPHATE CONCENTRATE Russian patent published in 1998 - IPC

Abstract RU 2107025 C1

FIELD: phosphatic concentrates for metal treatment. SUBSTANCE: method applicable in automobile industry, mechanical engineering, metallurgy, and other areas includes preparing aqueous suspension of zinc oxide at zinc oxide to water weight ratio 1:(1-3) and adding suspension to mixture of phosphoric and nitric acids with rate 20 to 110 kg ZnO/h cu.m followed by aging product under stirring for 1-3 h and finally separating it from impurities contained in zinc oxide. EFFECT: eliminated loss of nitrates.

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RU 2 107 025 C1

Authors

Chumaevskij O.V.

Chumaevskij V.A.

Kapralov A.V.

Mjakisheva E.A.

Dates

1998-03-20—Published

1994-03-01—Filed

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