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Equipment Specifications
The TRM series twin hammer classifying mill is composed
of a twin vertical milling assembly and a high efficiency
classifier, all in a single compact machine.
The degree of fineness of the end product ranges between
8 and 150µm, starting with a maximum material inlet
particle size of 15 mm and a maximum hardness of
around 4 Mohs, but can be adapted for materials with a
hardness of 5 Mohs with specific anti-wear materials.
The product is fed into the milling chambers where the
rotor discs where the particles impact against each other
and against the mill liner. To maximize the efficiency of
the grinding action, the material is subjected to collision,
friction and cutting in the space between the hammer
plates on the rotor disc and the mill liner.
The milled product is conveyed via an extraction fan to
the high-efficiency dynamic classifier. In the classifier,
the oversize material is sent back into the mill chamber
and subjected to an additional milling cycle. Only the
product with the correct fineness is allowed into the
transport tube, resulting in high milling efficiency.
Operating Principle
Twin rotor discs of the TRM Series Hammer Mill
Milling Process
Choosing a suitable grinding technology is governed by
knowledge of the physical and chemical properties of a
material and its behavior during micronization, features
which determine production capacity and, ultimately,
particle-size distribution. Every mineral, beginning with its
natural location of extraction, down to its unique
properties, has to be understood in this context. STM,
with its experience gained over years of testing, grinding,
and selecting materials, provides critical support to each
customer’s needs.
Products and Particle Sizes
Technical Data –MR Series Screen Mill
Mill Series MR - 400
Operational Advantages
• Compact design
• Reduced space requirements
• Ease of installation
• Low-maintenance
• Energy efficient
• Fully adjustable particle size output
• Fully automatic operation
The TRM Series Twin Hammer Mill is suitable for
virtually any industry where very fine sorbent milling is
required, including minerals, chemical, power,
incineration and food, and for any material with a
moisture content of less than 2% and a maximum
material hardness of 4 Mohs.
The TRM Series Twin Hammer Mill is perfectly suited for
milling of Trona for large gas flow applications, such as
power plant DSI, due to its low capital and maintenance
cost.
Product particle fineness D97 is 8-120 micron.
STM Mill Series
Installed Power
Absorbed Power
Hourly Production
Feed Size
Particle Size* Airflow Pressure Collecting
Filter Noise Level
type size kW kW Range kg/hr mm µm m3/h mm H2O m2 m2
RTM 800 125 112.5 100-1400 < 15 D90 < 20
12000 1000 55 55 D50 < 5
RTM 1000 200 181.8 100-1800 < 15 D90 < 20
20000 1000 91 91 D50 < 5
* Data Reference: Calcium Carbonate
Experience
STM EcoSystems • 216 US Hwy 206 • Hillsborough • NJ
E-mail: [email protected] Http: www.stmecosystems.com
JCF Hammer Mill (Particle size database available ):
Clay Sodium Carbonate Aluminum Hydroxide Ferrous Sulfate
Bakelite Activated Carbon Wood (chipped) Antimony Sulfide
Bauxite Mineral Carbon Lithopone Molybdenum Sulfide
Bentonite Choline Chloride Mica Muscovite Talcum
Sodium Bicarbonate CMC Soft mineral oxides Rare Earths
Hydrated Lime Cromite Lime Oxide Potassium Titanate
Kaolin Feldspar Magnesium Oxide Wollastonite
Barium Carbonate Fluorine Zinc Oxide Sulfur
Calcium Carbonate Natural Graphite Perlite
Magnesium Carbonate Synthetic Grafite Pyrite