Tecno Carbon Resources Shah Alam

Carbon Electrode Paste iCarbon Electrode Paste is a self-baking electrode used in submerged arc furnaces for delivering power to the charge mix. Electrode Paste is added to the top of the electrode column in either cylindrical or briquette form. As the paste moves down the electrode column the temperature increase causes the paste to melt and subsequently bake forming a block of electrically conductive carbon. Electrode Paste is essentially a mix of Electrically Calcined Anthracite (ECA) or Calcined Petroleum Coke (CPC) with Coal Tar Pitch.

Tamping Paste or Ramming Paste is used in the lining of the submerged arc furnace. It is softened by heating and then applied over the refractory lining of the SAF. Good quality Tamping Paste is essential for the long life of the furnace lining.The manufacturing process for Tamping Paste is the same as for Carbon Electrode Paste, the only difference being the fraction sizes of ECACPC which are different for Tamping Paste and the binder content is lower.

Coal Tar Pitch is obtained by distilling Crude Coal Tar. Coal Tar Pitch is used as a binder in the Aluminium, Graphite Electrode and Carbon Electrode Paste industry. It is also used in the Paints, Water-proofing and Refractory industries. Crude Coal Tar received from by-product coke oven plants is heated to temperatures up to 400oC in specially designed distillation stills. This removes moisture, Naphthalene, Light Creosote Oil and Heavy Creosote Oil from the Coal Tar. The resultant product is called Coal Tar Pitch. Depending on the blend of Crude Coal Tar and the temperatures to which the distillation is carried out different grades of Coal Tar Pitch are produced.

Calcined Petroleum Coke (CPC) is obtained by calcining Raw Petroleum Coke (RPC) at temperatures as high as 1400oC. RPC is a by-product of the oil refining process and is derived from the distillation of petroleum crude in delayed cokers. CPC is used in the Aluminum, Graphite Electrode, Steel, Titanium Dioxide and other carbon consuming industries. Raw Petroleum Coke received from the refinery is fed into a rotary kiln. The coke gradually moves towards the lower end of the kiln and during its movement down the kiln all moisture and volatile matters present in the RPC are driven off. It is a self sustaining process with the burning of hydrocarbons present in the RPC providing for the heat required for calcination. The product received at the end of the process is a highly electrically conductive carbon called Calcined Petroleum Coke.