Briquetting brings lots of benefit for material handling, general as follow:
- Reduce volume
- Stable mixture during processing
- Eliminate/reduce dust problems
- Control the hardness of raw materials
- Reduce the cost of packaging, storage and shipping
- Improve product performance
- Improve handling
What is a roller briquette press
Roller briquette press is a kind of pressurised agglomeration equipment which is equipped with two rollers.
Screw feeding or gravity feeding hopper, roller, motor, reducer, etc.
If the cohesive forces (particulate cohesion, valence forces, recrystallization, van Der Waals forces) between the particles are low, a binder has to be used before agglomeration. The physical properties of the feed material, the end use of the briquettes and the cost of binder addition have to be taken into account before a selection is made.
Binders are added to raw materials that cannot alone densify to form strong briquettes. The addition of a binder results in enhanced bonding and more stable properties in the briquettes produced.
The amount of binder to be added depends on the binding properties of the raw material and the binding agent. The densifying and binding ability of the briquette machine also determines whether a binding agent is necessary or not. That is, use of a briquette machine with high pressure would reduce the need for use of a binding agent.
Binder examples: starch, bentonite, bitumen, lime, cement, water, flour, lignosulphonates, molasses, polymer, resin, sodium silicate, etc.
Binder-free (binderless) way
Binder free way means to briquette the raw material with binder.
Typical pressure industrial usage
Advantanges of using a roller briquetting press
Constant operability with relatively low demand for energy;
A longer life span of moulding components as compared to other briquetting machines (e.g., screw or stamping types) or pressurised granulators;
Types of roller briquette press from Maxton
Cold Briquette Type
For all kinds of normal temperature raw materials
Hot Briquetting Type
Material briquetting over temperature of 150 Celsius.
Lab & Pilot Type
Small amount raw materials needed for lab test.
Upgrading and converting undesirable dust fines into salable granular product.