The TEC Rocket Mill is an innovative machine designed for alternative fuel preparation, integrating drying and grinding in a single process. It efficiently reduces input material size from 250mm to 15mm while providing a drying effect of approximately 10%, which can be enhanced with additional drying methods. Key features include high throughput, easy operation, and the ability to separate materials for recycling, resulting in lower fuel costs and reduced CO2 emissions.

1. A TEC Rocket Mill
The Rocket Mill is A TEC’s innova-
tion for alternative fuel preparation
which combines drying and grind-
ing in one step. The machine is
equipped with two grinding cham-
bers which can be independently
loaded. Permanent control of
the mill power guarantees opti-
mum and secure utilization. Input
material less than 250mm can be
fed directly to the Rocket mill. For
untreated alternative fuel resourc-
es usually only one pre-shredding
step followed by a sieving step,
which is sorting out the organic,
and a magnetic separation is
required.
Interchangeable perforated
screens will adapt the size of the
final product to the optimum for
the customer pyrolysis process.
Due to the grinding technology, a
drying effect of approx. 10 percent
is given. Additional drying with
process waste gas is possible to
achieve a higher drying rate. The
ultra-fines are dedusted and also
dosed to the kiln system.
DRYING AND GRINDING IN ONE STEP
FACTS & FIGURES
Capacity:
7-8 t/h < 15 mm final product
Dimensions:
8.530 x 4.160 x 6.000 mm
Weight: approx. 60.000 kg
Drive Unit: 2 x 315 kW
Rotor Speed ~ 580 rpm
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2. CHARACTERISTICS
Size reduction from 250 mm
to 15 mm in one grinding step
Saving of one shredding step
Easy to operate
Easy maintenance
No knifes
Drying effect during operation
Separation of FE and non-FE
materials
Different output fuel particle
sizes for main burner and
calciner possible
BENEFITS
Significant reduction of fuel costs
Reduction of CO2 emissions
Requires only two fuel
preparation steps
Separated FE and non-FE
materials can be fed back to the
recycling process
Reduction of coal consumption
PROCESS DATA
RDF for main burner
Diameter of screen holes: Ø15mm
Throughput: 7 – 8 t/h
Specific power consumption:
65-70 kWh/t < 15 mm final
Output size: 50 % < 5 mm,
depending on the material
composition
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RDF for calciner
Size of screen holes: rectangular
40 x 50 mm
Throughput: 15 t/h
Specific power consumption:
40-45 kWh/t < 60 mm final
Output size: 40% < 20 mm,
depending on the material
composition