Main Biomass Size Reduction Equipment
Historically, biomass utilization was limited to the wood industry, which has burned residues from different manufacturing processes. Recently there has been an expansion as more businesses are searching for ways to utilize biomass and cut back on greenhouse gas emissions. In the meantime, biomass handling systems are being developed fast, like biomass size reduction system, biomass pelletizing system, and biomass briquetting systems, etc. Among these, biomass size reduction system is the first and necessary processing equipment for biomass utilization as an energy. Biomass size reduction equipment for sale includes wood crusher, wood chipper, wood chipper shredder and wood hammer mill. Wood crusher, wood chipper and wood chipper shredder are used to process logs or large pieces of wood; while wood hammer mill is mainly used to pulverize wood chips or small diameter biomass materials like stalks, straw, grass and so on.

Size reduction process and its position in the whole process

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Hammer Mills for Sale
Wood hammer mill for sale in the global market are small hammer mill for personal use and medium-to-large sized wood hammer mill for commercial use. Small wood hammer mills for sale such as electric wood hammer mill and diesel wood hammer are mainly used at home, farms or small sized wood pellet mill; and commercial use wood hammer mills with large capacity are mainly used at large biomass processing industry like wood pellet plant or charcoal briquettes plant.

How Does the Wood Hammer Mill Work?
A wood hammer mill uses impacts of rotating hammer mills to crush and grind biomass materials to the required sizes. Generally speaking, if you want to get fine products, the wood hammer mill should be set at a fast shaft speed, small screen and large number of hammer mills; if you want to make coarse product, the wood hammer mill should be set at a slower speed, large screen and few hammer mills. According to the material’s characteristics and the production purpose, shaft speed, screen size and number of hammer mills can be changed individually or in combination to achieve the best size reduction effect.

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Specifications of Wood Particles as Fuel
The application of ground wood particles determines the selection of the size reduction equipment. Here is the summary of wood fuel specifications by burner type.

Device size range
Particle size
Moisture content
Pile burners
(wet cells)
Up to 40 GWt
Virtually any kind except wood flour
Limited by grate size
and feed opening
<65%
Thin-pile
Spreader-stoker
Sawdust, non-stringy bark shavings,
end cuts, chips and chips rejects, hog fuel
6-50mm
10-50%
Under-fire
Stokers
Sawdust, non-stringy bark shavings,
chips, hog fuel
6-38mm
10-30%
Suspension,
cyclonic
1.5 MW-3 GWt
Sawdust, non-stringy bark,
shaving, flour, sander dust
6mm max
<15%
Suspension,
air Spreader-stoker
Sawdust, non-stringy bark,
shaving, flour, sander dust, hog fuel
6mm max
<10%
Fluidized bed
combustors
15-900 MWt
Virtually any kind
except wood flour and stringy materials
50mm max
<60%
Gasifiers,
Fixed bed
17 MWt-24 GWt
Chip, hog fuel
6-100mm
<20%
Gasifiers, FBG
2.5-50 MWt
Virtually any kind
except wood flour and stringy materials
6-50mm
15-65%

The particle size needed for the production of densified fuels such as wood pellets, briquettes. For making wood pellets or briquettes, wood hammer mill grinder is the dominant pre-processing equipment.

Particle size needed
 Overall shape
Dimension(mm)
Density(kg/m3)
Pellets
< 6mm
Cylindrical
6/8/10/12 Dia.
700
Briquettes
< 6mm
Cylindrical
50-100 Dia.
1000-1500

Wood Hammer Mill Grinder for sale by Amisy Machinery

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Model
FSP56*36
FSP56*40
FSP60*30
FSP60*45
FSP60*60
FSP60*75
FSP112*40
Capacity
2.5–5t/h
4–7t/h
2–5.5t/h
5–9t/h
6–10t/h
8–13t/h
12–22t/h
Diameter of rotor
560mm
560mm
600mm
600mm
600mm
600mm
1120mm
Width of chamber
360mm
400mm
300mm
450mm
600mm
750mm
400mm
Hammer NO.
20
24
24
44
48
60
40
Speed of rotor
2980r/min
2980r/min
2980r/min
2980r/min
2980r/min
2980r/min
1440r/min
Power
18.5/22kw
30/37kw
18.5/22kw
45/55kw
75/90kw
90/110kw
90/110kw

FSP series wood hammer mills are the best choice for commercial biomass processing. And for small biomass processors, we can also offer small wood hammer mill.