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2 094 720

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C1

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IPC

(21) (22)

Application

4901826/02, 1991-01-11

(22)

Actual filing date

1991-01-11

(45)

Published

1997-10-27

(72)

Inventor

Zheleznov D.F.D'Jakonova L.A.Zajko V.P.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Ehlektrometallurgicheskij Kombinat"

METHOD OF LINING ARCHES Russian patent published in 1997 - IPC

Abstract RU 2094720 C1

FIELD: use of refractory materials in metallurgy; methods of lining arches of electric arc furnaces. SUBSTANCE: first layer of lining is rammed with mixture consisting of corundum sludge, 25-40%; fire-clay, 5%; waste graphite, 1-2%; phosphate binder, 4-8% corundum, the balance. Thickness of layer with porosity of ramming 15-20% is equal to 1/2-3/4 of height of lining. Then second layer is rammed. It consists of corundum sludge, 20-25%; fireclay, 5%; phosphate binder, 5-10%; corundum, the balance, at porosity of ramming of 20-25%. During heating, silicon ferroalloy is added to surface of melt in area of arcs. EFFECT: enhanced reliability. 1 tbl

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RU 2 094 720 C1

Authors

Zheleznov D.F.

D'Jakonova L.A.

Zajko V.P.

Dates

1997-10-27—Published

1991-01-11—Filed

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