Vibrated Graphite

Vibrated Graphite has to go through an extensive manufacturing procedure to produce a quality product. Let us got through the steps from the raw material to the final product:

· Cokes

We obtain coke by heating hard coal at temperatures of between 600-1200°C. The procedure normally takes place in oil refineries inside custom-made coke ovens.

the heating is done using various combustion gases together with a regulated oxygen supply. The calorific value of this coke is significantly higher compared to conventional fossil coal.

· Pulverizing

The raw materials are inspected and then reduced into specific grain sizes by pulverization. After grinding the material, they are then transferred into special bags.

Pulverization produces a very fine coal dust. This dust is what is placed in the special bags that are arranged based on their grain size.

· Kneading

After the coke has been pulverized, it is then mixed with pitch. This pitch is what we obtain as a by-product of roasting hard coal.

The two mixtures are combined at extremely high temperatures. This is to facilitate the melting of the coal so that it easily blends with the grains of coke.

· Second Pulverizing

The kneading process above produces small hard carbon balls. For us to obtain very fine grains once more, we have to carry out another pulverization on these balls.

· Vibration Molding

We normally apply this method when shaping very big products. During this discontinuous process, you simply take the pasty mixture and fill it inside the intended mold.

You then place a heavy metal on top of the mold that vibrates to compact it. This gives you a solid material having a very high isotropy.

· Carbonizing

This is one of the longest processes that involves baking the pressed material in an oven for around 2-3 months. These furnaces are very big and can achieve temperatures of around 1000°C.

However, you have to constantly regulate this temperature to reduce the chances of defects such as cracks. This process gives the block the right amount of hardness required.

· Pitch Impregnation

This process is meant to reduce the porosity of your block by using pitch and baking it again. You should note that the viscosity of this pitch should be lower than the one we used as a binder to evenly fill the pores.

· Graphitizing

This is the process of the carbon turning into graphite. The block is heated at about 3000°C resulting in better thermal conductivity, higher density, and improved corrosion resistance of the block.

· Machining

The completed graphite block can now be machined according to your application and specifications.

· Purification and Surface Treatment

You can remove the impurities in your vibrated graphite by heating it inside halogen gas at around 2000°C. You can then smoothen its surface or even mill it to suit the specifics of your applications.