The basic prerequisite for a good coconut charcolal ist the raw material. It consists of coarse milled carbonized coconut shells. Already now the precise selection of the goods is of vital importance.
Highly contaminated raw material can result a bad smell for example, because very small pieces of waste (plastic, dirt, etc.) could burn down. Afurther important component is the ash color. Already during the ignition of the raw material the color of the ash can be seen. Some coconut verities for example have dark brown, other have light grey, almost white ash.
As soon as an adequate raw material is chosen, it will clean up in the following two steps. This process is also known as "screening". During the "screening" the raw material will examined by the human eye and carefully released from waste and dirt. Then it gets to a circular drum screen. The wall have small holes and act as a kind of a sieve, which also separates the smallest dirt.
The raw material freed from dirt and waste get into a grinder and get grinded in the relevant fineness. The carbon dust has a similar consitency as flour. Per how fine the grain size should be, the grinder has to be adjust accordingly.
In the followin two steps the decisive mixture for the briquettes will be mixed. The grinded coal dust will be mixed with the natural, gained from the cassava root, binder Tapioca and a certain amount of water.
In the mixers, the mixture stirs into a thick mass. The time that the mixture stays in the mixers is very important. If it stirs to long, the mass gets to dry, which can have a bad effect on the quality of the briquettes.
Now the product, which has the consitency of modeling clay, gets in to an extruder. The process technology of extrusion presses the thick mass under pressure through a shaping opening.
This technology form 30 cm long strings with the profile of the opening.
These strings laying across on a conveyor belt. At the end of this belt are several round blades, having the same distance to each other, which cut the strings in the briquette shape.
The cubes, which are still moist, will be placed on metal grids and get separate crafted. The cubes get tested before they come in the dryer, because in case of bad quality they could utilize again.
After the drying process the cubes are completely substantiated and get put into a test again.
Then the cubes get to the table to get pack into plastic bags.