[12] Patent
[11] Patent No.:GC0009286  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/140846
Date of the Decision to Grant the Patent:04/Dec/2018

[21] Application No.:GC 2015-30258

[22] Filing Date:27/10/2015

[30] Priority:

[33] State [32] Priority date [31] Priority No.

[72] Inventor: Hans Seehuus

[73] Owners:1- Norsk Hydro ASA, N-0240, Oslo, NorwayŘŚ2- Lyng Drilling AS, N- 7125, Vanvikan , Norway

[74] Agent: Suleiman I. Al-Ammar Law Office




Int. Cl.: B23D47/00; B28D 1/04; C25C 3/12 (2006.01)

[56] Cited Documents:

-WO 2006/019304 A1 (NORSK HYDRO ASA ET AL) 23 February 2006
-WO 2015/089672 A1 (QUEBEC INC.) 25 June 2015
Examiner: Eng. Yusuf AlRaqabi

[57] Abstract: The present invention concerns a method and an arrangement for processing calcinated carbon bodies such as anodes or cathodes for use in connection with electrolytic production of aluminium. The carbon bodies are processed using a rotating processing tool (101) that consists of a mainly circular disc with cutting edges (114) mounted at its periphery. The cutting edges may be made of polycrystalline diamond (PCD) or an equivalent material. The rotating processing tool mounted on a rotating, driven spindle and is guided by guiding elements (110) that can be jets or perforated discs that blows pressurized air at the tool, or rollers (120). With the present invention it is possible to create narrow and deep slots in calcinated carbon bodies in an efficient manner with low tool wear.
No. of claims: 17     No. of figures: 5


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