Raymond® Imp? mill for biomass applications0 pages

steam PRODUCT SOLUTIONS

Industrial Mills

Raymond® Imp™ Mill for Biomass

With more than 100
years of experience,
Alstom is a leader in the
design, manufacturing
and construction of
industrial milling
equipment and has set the
standard in size reduction.
main features

•tVersatile and dependable

The Raymond Imp Mill System: Versatile and dependable high speed airswept
swing hammer impact mill designed for fine and medium grinding of soft
non-metallic minerals, coals, various chemical compounds, food products
and biomass.
With costs of conventional fuels increasing, many manufacturers are exploring
alternative fuels for firing kilns, boilers, dryers and furnaces either directly or from
pellets. As a result, biomass sources such as wood chips, sawdust, bark and other
fibrous materials are being developed as primary fuels.
Three basic systems utilizing the capabilities of the Raymond Imp Mill with Flash
Drying have been developed. These systems can pulverize sawdust, bark, wood chips,
pelletized wood waste, rice hulls and seed hulls to finenesses up to 50% passing 100
mesh (50% retained on 150 micron) with capacities up to 20 tph.
The imp mill is a versatile and dependable high speed swing hammer impact mill. Raw
feed, nominally one inch (25mm) or smaller in size, enters the mill grinding chamber
and is impacted against the swing hammer and walls of the mill to pulverize the
material. Built for heavy-duty use, the mill is generally constructed to withstand
pressures up to 50 psig (3.5 bar).
The systems are effective for simultaneous grinding, drying and classify biomass
materials. After passing through the grinding chamber the particles are carried via
air stream to a classifier, where oversized particles are returned to the mill for further
grinding. An important feature of the system is its drying capability. Material is flash
dried by introducing heated air into the mill. Final moisture levels are determined
through automatic temperature controls.

TPWR/PRSHT/IMRIMB/EN/11.2013/USA/1768

swing hammer impact mill.
•tAvailable in six sizes.
•tCapable of simultaneously
pulverizing, classifying, and
drying
•tHeavy-duty design and
construction.
•tCan withstand pressure up to
50 psig.

Pulverize Wood Waste and Other
Fibrous Materials

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