Übersetzung für "Schmelzflusselektrolyse" in Englisch

In aluminium smelting, liquid aluminium is extracted from the raw material alumina (aluminium oxide) through a process called fused-salt electrolysis.

The reduction of aluminium oxide is carried out by fused salt electrolysis.

Todays it is mainly obtained by electrolysis of Magnesite and Dolomite.

The extraction of aluminium from aluminium oxide is only economical using fused-salt electrolysis.

Aluminium is obtained from naturally occurring aluminium oxide by means of fused salt electrolysis.

It was first isolated by Humphry Davy in 1807 by the electrolysis of sodium hydroxide.

In the fused salt electrolytic production of aluminum the use of cathodes which are wet by aluminum is well known.

In the fused salt electrolytic process for making aluminum it is known to employ wettable, solid cathodes.

For example, aluminum can be deposited on a substrate electrolytically by fused-salt electrolysis or from solutions.

In aluminum production according to the Hall-Heroult process, aluminum oxide is reduced during molten mass electrolysis.

The fusion electrolysis of bauxite is very important, because the final product is aluminium.

Compared with some other metals, the extraction of primary aluminium by fused-salt electrolysis requires larger amounts of energy.

Aluminium is produced from aluminium oxide (Al2O3) by electrolysis in pots (cells) electrically connected in series.

The invention is related to a process for extinguishing the anode effect which occurs during the manufacture of aluminum by fused salt electrolysis, and also relates to a device for carrying out the said process.

The invention relates to an electrode for fused melt electrolysis, more particularly for the electrolytic production of metals such as aluminium, magnesium, lithium or of compounds thereof.

Devices for providing a continuous supply of alumina to electrolytic cells for fused salt electrolysis of alumina have been known for about 50 years.

It is the object of the invention to provide a novel kind of electrode for fused melt electrolysis, in which the above described disadvantages of the prior art are ameliorated.

In German Offenlegungsschrift No. 24 25 135 an electrode for fusion electrolysis is described which has an upper metallic electrode holder, e.g. a so-called thermax rod.

Large scale production of aluminum today is still mainly by fused salt electrolytic reduction of aluminum oxide, for which purposes the aluminum oxide is dissolved in a fluoride melt comprised for the greater part of cryolite.

In the production of aluminum by fused salt electrolytic reduction of aluminum oxide, the latter is dissolved in a fluoride melt, comprised for the greater part of cryolite.

Reduction pot for producing aluminum by the fused salt electrolytic process, comprising an outer steel shell having a floor and sidewalls, a thermally insulating layer covering said shell, and an inner lining covering said layer made essentially of carbon with iron cathode bars embedded in it, wherein at least the lower 75% of the floor insulating layer is a mechanically compacted layer of a granulate material from replaced electrolytic cells comprised mainly of moler stone essentially of particle size ranging from 0.01 to 8 mm and containing the fully ground but otherwise untreated insulation layers substantially free from carbon residues, and wherein the remaining 0-25% is a layer selected from the group consisting of firebrick, ground firebrick, smelter alumina and mixtures thereof, and the sidewalls of the steel shell are insulated solely by firebrick.

This invention relates to an electrode holder for use in fusion electrolysis. A known metallic electrode holder, e.g. of copper or copper alloy, for electrodes of self-consuming or slowly self-consuming material which can be attached by means of a screw nipple or the like, includes a cooling device with a flow channel and a reflux channel and at least partially in its lower area may have a protective coating.

In Austrian Patent Specification No. 339 061 electrodes for fusion electrolysis of alumina are described, in which the metal shaft of the electrode holder holding the active part is provided with channels for the passage of gas.

BACKGROUND OF THE INVENTION The present invention relates to sidewall insulation in the region between the outermost firing shaft and the outer wall of a chamber type furnace for baking carbon blocks, in particular anodes for the production of aluminum by the fused salt electrolytic process.

The object of the present invention is to develop a sidewall insulation for the region between the outermost firing shaft and the outer wall of a chamber type furnace for baking carbon blocks, in particular anodes for the fused salt electrolytic production of aluminum, such that the said insulation exhibits a higher degree of efficiency and longer service life, and this using conventional designs, and incurring comparable expenditure for labor and material.

The invention relates to a reduction pot for the production of aluminum by the fused salt electrolytic process in which the reduction pot comprises an outer steel shell, thermal and electrical insulation, and an inner lining that is essentially of carbon and contains iron cathode bars.