Productos
Briquettes
They are agglomerates of different shapes (almonds, pillows, etc.) made by squeezing a mixture of dusts and sludges between two rolls rotating in opposite directions. These rolls have cavities or indentations cut into their surfaces that form the briquettes.
The briquetting plant has three different stages:
- The first part of process makes a grinding and screening of the material in order to get the particle size needed for briquetting.
- In the second stage the mix with the binder added is fed to the press in order to get the agglomerates.
- In the last stage the briquettes are cured to get enough strength, after this they are screened again to meet the specifications of particle size and strength of the customer or final user.
- In the first stage the sludges and dusts are mixed in order to get a manageable material in the plant.
- In the second stage this mixture are ground in order to get a uniform particle size.
- In the last stage the uniform size mixture is blended with a binder and then pelletized in two balling cones.
- After pelletizing the balls are cured under atmospheric conditions.
Pellets
They are agglomerates formed by balling a mixture of dusts and sludges previously mixed with a binder. The balls are formed under atmospheric conditions and, in some cases, hardened by firing or curing (this last one depends on the binder used during pelletization).
SADIM has a pelletizing plant in Asturias (Spain) for agglomerating 120 000 t/year of flue dusts and sludges generated in the steel mill Aceralia (Arcelor Group). The pellets are recycled into the process of making steel through the Sinter Plant of Aceralia, as iron ore due to their high metallic values. The plant has three stages as well as the briquetting plant and they are:
Tons of wastes per year managed
