Manufacturing of carbon electrodes

Dissertant

Muhammad, Abd al-Karim Jasim

University

University of Technology

Faculty

-

Department

Department of Electromechanical Engineering

University Country

Iraq

Degree

Master

Degree Date

2004

English Abstract

Two types of raw materials are used as a filler in the study ; local sponge and foreign needle type petroleum coke.

Calcination process was done on the two types of coke in a laboratory shaft furnace designed, constructed and operated for this process.

This process is very necessary to have cokes with low volatile matter reaching 0.5 % to have electrode without extrusion defects.

Crushing and sizing were used to build up two types of electrodes by using suitable program written for this purpose.

Mixing the filler with applying a binder by using coal tar pitch as a binder by 31 % to have homogenous mixture.

A direct extrusion unit has been designed and manufactured for circular section using the theoretical die design concept for designing the die profile such as the concept of reservation of the strain ratio along the forming pass through dies with theoretical concept of UCRHS, ACRHS, DCRHS.

All dies were with fixed reduction area of 75 %.

The mixture used (filler with binder) was extruded in round section carbon electrodes carried out at (60-80) °C.

The results show that the extrusion dies UCRHS is the more efficient die design, and the needle type petroleum coke is the most suitable coke for the production of carbon electrodes.

Main Subjects

Electronic engineering

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-305717