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Title: Electrode Arrangement As Substitute Bottom For An Electrothermic Slag Smelting Furnace.

Abstract

The electrode arrangement uses vertically oriented electrodes with side wall contacts for an electrothermic smelting furnace for aluminum production. The side wall contacts are radially moveable into the furnace to compensate for wear on the contacts. The side wall contacts can be hollow to allow a slag forming charge to be fed to the furnace.

Inventors:
 [1];  [2];  [3]
  1. (Enebakk, NO)
  2. (Oslo, NO)
  3. (Kristiansand, NO)
Publication Date:
Research Org.:
Aluminum Company of America
OSTI Identifier:
880159
Patent Number(s):
US 6,980,580
Application Number:
10/646507
Assignee:
Alcoa Inc. (Pittsburgh, PA) GFO
DOE Contract Number:
FC36-00ID13900
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Aune, Jan Arthur, Brinch, Jon Christian, and Johansen, Kai. Electrode Arrangement As Substitute Bottom For An Electrothermic Slag Smelting Furnace.. United States: N. p., 2005. Web.
Aune, Jan Arthur, Brinch, Jon Christian, & Johansen, Kai. Electrode Arrangement As Substitute Bottom For An Electrothermic Slag Smelting Furnace.. United States.
Aune, Jan Arthur, Brinch, Jon Christian, and Johansen, Kai. Tue . "Electrode Arrangement As Substitute Bottom For An Electrothermic Slag Smelting Furnace.". United States. doi:. https://www.osti.gov/servlets/purl/880159.
@article{osti_880159,
title = {Electrode Arrangement As Substitute Bottom For An Electrothermic Slag Smelting Furnace.},
author = {Aune, Jan Arthur and Brinch, Jon Christian and Johansen, Kai},
abstractNote = {The electrode arrangement uses vertically oriented electrodes with side wall contacts for an electrothermic smelting furnace for aluminum production. The side wall contacts are radially moveable into the furnace to compensate for wear on the contacts. The side wall contacts can be hollow to allow a slag forming charge to be fed to the furnace.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 27 00:00:00 EST 2005},
month = {Tue Dec 27 00:00:00 EST 2005}
}

Patent:

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  • A method for the recovery of valuable materials from titanium grinding swarf is provided comprising the steps of sieving the accumulated titanium grinding swarf to remove unwanted coarse trash and grinding wheel fragments, pelletizing, and smelting in an electric arc furnace to produce ferrotitanium and/or high titanium slag.
  • A furnace for smelting iron ore and/or refining molten iron is equipped with an overhead pneumatic lance, through which a center stream of particulate coal is ejected at high velocity into a slag layer. An annular stream of nitrogen or argon enshrouds the coal stream. Oxygen is simultaneously ejected in an annular stream encircling the inert gas stream. The interposition of the inert gas stream between the coal and oxygen streams prevents the volatile matter in the coal from combusting before it reaches the slag layer. Heat of combustion is thus more efficiently delivered to the slag, where it ismore » needed to sustain the desired reactions occurring there. A second stream of lower velocity oxygen can be delivered through an outermost annulus to react with carbon monoxide gas rising from slag layer, thereby adding still more heat to the furnace. 7 figures.« less
  • A method for the recovery of valuable materials from titanium grinding swarf is provided comprising the steps of sieving the accumulated titanium grinding swarf to remove unwanted coarse trash and grinding wheel fragments, pelletizing, and smelting in an electric arc furnace to produce ferrotitanium and/or high titanium slag. 1 fig.
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