Mutiara Indo Resources

Incoming Material Control Activities

The incoming raw materials will be weighed first to determine the weight, then random sampling of 1/2 kg is carried out on the front, middle and rear of the Fuso and after that testing or tests are carried out such as water content and ash content tests to determine whether the quality is appropriate or not.

Screening and Sizing to 2.5 cmDrying Process

The raw materials are sorted by being put into a sieving machine to separate the 1-2.5 cm charcoal which is temporarily stored as raw material for steam activated carbon and the 5 cm charcoal will be stored separately in a storage warehouse for charcoal.

Carbon Activation in Rotary Kiln

Good quality raw materials will be fed into the rotary kiln machine, this activation process is carried out at a temperature ranging from 800˚C – 950˚C according to the production temperature standard and is carried out for 6 – 8 hours.

The process of entering raw materials does not stop for 24 hours, raw materials in a day enter the rotary kiln machine as much as 3.5 to 3.8 tons producing approximately 2 tons of product results. The shrinkage that occurs in raw materials into finished products can be influenced by temperature, the rotation speed of the rotary kiln machine itself or the material Flow speed is around 3.5 minutes to 4.5 minutes of rotation which is set according to the desired quality. In this activation process, it is also assisted by steam 1,2,3 to be channeled into the rotary kiln machine and chimney which is useful for a place to dispose of excess temperature.

Cooling and Weathering

After being removed from the rotary kiln, the steam-activated carbon products are placed in open drums, unpacked, and exposed to the open air, and under the roof. This process, known as the cooling and weathering process, takes a minimum of 14 days before final packing/being packaged.

Final Inspection and Testing

Quality Analysis Parameters:
1. Ash Content: 3-10%
2. Moisture Content: 5-10%
3. Methylene Blue Absorption Capacity: 150-225 mg/g (for steam-activated carbon made from wood charcoal)
4. Iodine Absorption Capacity: 800-1200 mg/g (for activated carbon made from coconut shell charcoal)
5. PH Value 4-11

Crushing/Grinding Process

Product Specifications: the steam activated carbon is available in granular form with the following mesh size options 20×40 Mesh, 6×12 Mesh, 10×20 Mesh, 6×8 Mesh, 4×8 Mesh and 8×30 Mesh.

Packing and Storage

The ordered packaging includes PP woven bags with inner plastic liners, each with a capacity of 25 kg, and Jumbo bags with a capacity of 500 kg.