Method and device for electrolyte crust breaking by separation plasma cutting
First Claim
1. A method for breaking an electrolyte crust by a separation cutting in a reduction cell for production of an aluminum, the method comprising:
- (a) thermally melting a crust material with a high-speed high-temperature concentrated flow of a thermal plasma jet heat energy, wherein a directed thermal plasma jet is generated and moved above the electrolyte crust along a predetermined; and
(b) continuously removing a formed molten material from a zone of the thermal plasma jet impact to create a slit in the electrolyte crust with the thermal plasma jet, wherein the slit is enough to perform the separation cutting and the breaking of the electrolyte crust.
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Abstract
The present disclosure relates to aluminum production, more particularly, to a method of breaking an electrolyte crust in reduction cells of all types. According to a disclosed method for breaking electrolyte crust by means of separation cutting in a reduction cell for production of aluminum, the crust is cut and broken by means of the thermal melting of a crust material with a high-speed high-temperature concentrated flow of thermal plasma jet heat energy, for which a directed thermal plasma jet is generated and moved above the electrolyte crust along a predetermined path, a formed molten material is continuously removed from a zone of the thermal plasma jet impact to create in the electrolyte crust a slit with the thermal plasma jet, wherein the slit is enough for of crust continuous separation cutting and breaking. The technical effect in the addressing the mentioned object, reduction of the amount of broken electrolyte crust, avoiding the formation of electrolyte crust pieces during the breakage process and, consequently, reduction of power consumption for heating-up the covering material consisting of a mixture of alumina and crushed electrolyte used to form an electrolyte crust.
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Citations
14 Claims
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1. A method for breaking an electrolyte crust by a separation cutting in a reduction cell for production of an aluminum, the method comprising:
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(a) thermally melting a crust material with a high-speed high-temperature concentrated flow of a thermal plasma jet heat energy, wherein a directed thermal plasma jet is generated and moved above the electrolyte crust along a predetermined; and (b) continuously removing a formed molten material from a zone of the thermal plasma jet impact to create a slit in the electrolyte crust with the thermal plasma jet, wherein the slit is enough to perform the separation cutting and the breaking of the electrolyte crust. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for plasma cutting an electrolyte crust in a reduction cell for production of an aluminum, the system comprising:
an assembly of a plasma torch secured to a boom of an articulated manipulator comprising actuators configured to extend the boom with the plasma torch secured thereto from a transport position into a working position, and vice versa, to move the plasma torch at a pre-defined speed along a cutting path and to maintain a gap between a plasma torch tip and the electrolyte crust when moving the plasma torch over an electrolyte crust surface having a complex relief. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
Specification