IP Library Granted Patent US 9,534,266
Granted Patent B2
US 9,534,266 · App. 14/352,925 · Granted Jan 3, 2017

Slag-supplying container for use in electric furnace for reduction processing of steel-making slag

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Quick Facts
Patent No.
US 9,534,266
App. No.
14/352,925
Granted
Jan 3, 2017
Kind
B2
Abstract

This slag-supplying container of an electric furnace for reduction processing of steel-making slag includes: a container body that causes hot steel-making slag to flow to the electric furnace; a slag discharging portion connected with an electric-furnace-side slag-supplying port; a slag receiving portion that receives the hot steel-making slag supplied; a lid that opens and closes the slag receiving portion; an exhausting portion that discharges exhaust gas from the electric furnace; and, a tilting unit that tilts the container body to adjust the amount of inflow of the hot steel-making slag to the electric-furnace-side slag-supplying port.

Claims (17)

1. A slag-supplying container of an electric furnace for reduction processing of steel-making slag, which causes hot steel-making slag to flow to a layer of molten slag on molten iron in the electric furnace through an electric-furnace-side slag-supplying port, the slag-supplying container comprising:

a container body that includes an upper wall, a bottom wall, and a side wall disposed between the upper wall and the bottom wall, and causes the hot steel-making slag to flow to the electric furnace;

a slag discharging portion that is disposed at an end portion of the side wall of the container body and is connected with the electric-furnace-side slag-supplying port;

a slag receiving portion that is disposed to the side wall or the upper wall of the container body and receives supply of the hot steel-making slag;

a lid that opens or closes the slag receiving portion;

an exhausting portion that is disposed to the container body and discharges exhaust gas from the electric furnace; and

a tilting unit that only tilts the container body to adjust an amount of inflow of the hot steel-making slag to the electric-furnace-side slag-supplying port,

wherein an inside of the slag-supplying container is an exhaust path of the exhaust gas discharged from the electric furnace, and the electric furnace is a fixed-type furnace.

2. The slag-supplying container according to claim 1 , including a portion of which a side wall has a height gradually decreasing toward the slag discharging portion, and a space between the upper wall and the bottom wall gradually decreases toward the slag discharging portion.

3. The slag-supplying container according to claim 1 , wherein the upper wall or the side wall includes a first gas-blowing nozzle that blows oxygen or oxygen-containing gas into the container body.

4. The slag-supplying container according to claim 1 , wherein the upper wall or the side wall includes a burner.

5. The slag-supplying container according to claim 1 , wherein the upper wall or the side wall includes a melting radiation unit that supplies a slag-modifying agent in a molten form.

6. The slag-supplying container according to claim 1 , wherein the bottom wall includes a second gas-blowing nozzle that blows a mixture gas of N 2 and O 2 into the container body.

7. The slag-supplying container according to claim 1 , comprising a weight measuring unit that measures an amount of change in mass of the hot steel-making slag in the container body.

8. The slag-supplying container according to claim 1 , comprising

a carriage disposed to a lower part of the bottom wall and used for replacing the container body.

9. The slag-supplying container according to claim 1 , wherein the exhausting portion is connected to a dust collector.

Assignments (2)
CHANGE OF NAME Recorded May 14, 2019
From: NIPPON STEEL & SUMITOMO METAL CORPORATION
To: NIPPON STEEL CORPORATION
Reel/Frame 049257/0828 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 21, 2014
From: HARADA, TOSHIYA; ARAI, TAKASHI; FUKUMURA, HIROKI
To: NIPPON STEEL & SUMITOMO METAL CORPORATION
Reel/Frame 032716/0974 →