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Wood Pellet Trading – TRADERSbiomass

State-of-art online trading platform of biomass.

Wood Pellet Trading

Wood pellets are the most common type of pellet fuel and are generally made from compacted sawdust and related industrial resedues from the milling of lumber, manufacture of wood products, furniture and construction. Wood Pellets are categorised by their Origin, Physical and Chemical Properties like type of wood, heating value, moisture, ash content, dimensions etc.

Our platform covers the trading of the world’s most common standards (including ISO) & non-standard wood pellet products.

Technical Specification of standard Wood Pellets:

*Exact technical specification of Non-standard Wood Pellet products can be inserted in the Electronic Trading System and published by the suppliers.

Origin & Source
A1 A2 B Analysis Method
1.1.3 Stemwood 1.1.1 Whole trees without roots 1.1 Forest plantation & other virgin wood ISO 17225-1
1.2.1 Chemically untreated wood residues a 1.1.3 Stemwood 1.2 By products and residues from wood processing industry
1.1.4 Logging residues 1.3 Used wood
1.2.1.5 Bark
1.2.1 Chemically untreated wood residues a
Physical Parameter
Unit A1 A2 B Analysis Method
Diameter, D b mm D06, 6±1; D06, 6±1; D06, 6±1;  ISO 17289
Length, L c mm 3,15 ≤ L ≤ 40 3,15 ≤ L ≤ 40 3,15 ≤ L ≤ 40  ISO 17289
Diameter, D b mm D08, 8±1; D08, 8±1; D08, 8±1;  ISO 17289
Length, L c mm 3,15 ≤ L ≤ 40 3,15 ≤ L ≤ 40 3,15 ≤ L ≤ 40  ISO 17289
Moisture, M As received, w-% wet basis M10 < 10 M10 < 10 M10 < 10  ISO 18134-1, ISO 18134-2
Ash, A Dry Basis, w-% A0.7 ≤ 0,7 A1.5 ≤ 1,5 A3.0 ≤ 3,0  ISO 18122
Mechanical Durability, DU As received, w-% DU97.5 ≥ 97,5 DU97.5 ≥ 97,5 DU96.5 ≥ 96,5  ISO 17831-1
Fines, F d As received, w-% F1.0 ≤ 1 F1.0 ≤ 1 F1.0 ≤ 1  ISO 18846
Additives e Dry Basis, w-% ≤ 2 w-% Type and amount to be stated ≤ 2 w-% Type and amount to be stated ≤ 2 w-% Type and amount to be stated  
Net Calorific Value, Q As received, MJ/kg or kWh/kg Q16.5, 16,5≤Q≤19 or Q4.6, 4,6≤Q≤5,3 Q16.3, 16,3≤Q≤19 or Q4.5, 4,5≤Q≤5,3 Q16.0, 16,0≤Q≤19 or Q4.4, 4,4≤Q≤5,3  ISO 18125
Bulk Density, BD kg/m3 BD600 ≥ 600 BD600 ≥ 600 BD600 ≥ 600  ISO 17828
Ash melting behaviour f °C Should be stated Should be stated Should be stated ISO 21404
 
Elemetrary Composition
Unit A1 A2 B Analysis Method
Nitrogen, N Dry Basis, w-% N0.3 ≤ 0,3 N0.5 ≤ 0,5 N1.0 ≤ 1,0 ISO 16948
Sulphur, S Dry Basis, w-% S0.03 ≤ 0,03 S0.03 ≤ 0,03 S0.04≤ 0,04 ISO 16994
Chlorine, Cl Dry Basis, w-% Cl0.02 ≤ 0,02 Cl0.02 ≤ 0,02 Cl0.03 ≤ 0,03 ISO 16994
Arsenic, As Dry Basis, mg/kg ≤ 1 ≤ 1 ≤ 1 ISO 16968
Cadmium, Cd Dry Basis, mg/kg ≤ 0,5 ≤ 0,5 ≤ 0,5 ISO 16968
Chromium, Cr Dry Basis, mg/kg ≤ 10 ≤ 10 ≤ 10 ISO 16968
Copper, Cu Dry Basis, mg/kg ≤ 10 ≤ 10 ≤ 10 ISO 16968
Lead, Pb Dry Basis, mg/kg ≤ 10 ≤ 10 ≤ 10 ISO 16968
Mercury, Hg Dry Basis, mg/kg ≤ 0,1 ≤ 0,1 ≤ 0,1 ISO 16994
Nickel, Ni Dry Basis, mg/kg ≤ 10 ≤ 10 ≤ 10 ISO 16968
Zinc, Zn mg/kg ≤ 100 ≤ 100 ≤ 100 ISO 16968
 

    a Negligible levels of glue, grease and other timber production additives (< 1 w-%) used insawmills during the production of timber and timber product from virgin wood is acceptable if all chemical parameters of the pellets are clearly within the limits and concentrations are too small to be concerned with.

    b Selected size D06 or D08 of pellets to be stated.

    c Amount of pellets longer than 40 mm can be 1 w-%. Maximum length shall be < 45 mm.

    d At factory gate in bulk transport (at the time of loading) and in small (up to 20 kg)and large sacks (at time of packing or when
    delivering to end-user). Fines less than 3,15 mm are screened by hand according to standard ISO 18846

    e Type of additives to aid production, delivery or combustion (e.g. pressing aids, slagging inhibitors or any other additives like starch, corn flour, potato flour, vegetable oil,…). Also, additives which are used after production, before unloading to end-user storages, shall be stated similarly (type and amount).

    f All characteristic temperatures (shrinkage starting temperature (SST), deformation temperature (DT), hemisphere temperature (HT) and flow temperature (FT) in oxidizing conditions should be stated.


*Exact technical specification of Non-standard Wood Pellet products can be inserted in the Electronic Trading System and published by the suppliers.

Origin & Source
I1 I2 I3 Analysis Method
1.1.3 Stemwood 1.1.1 Whole trees without roots 1.1 Forest plantation & other virgin wood ISO 17225-1
1.2.1 Chemically untreated wood residues a 1.1.3 Stemwood 1.2 By products and residues from wood processing industry
1.1.4 Logging residues 1.3 Used wood
1.2.1.5 Bark
1.2.1 Chemically untreated wood residues a
 
Physical Parameter
Unit I1 I2 I3 Analysis Method
Diameter, D b mm D06, 6±1; D06, 6±1; D06, 6±1;  ISO 17829
Length, L c mm 3,15 ≤ L ≤ 40 3,15 ≤ L ≤ 40 3,15 ≤ L ≤ 40  ISO 17829
Diameter, D b mm D08, 8±1; D08, 8±1; D08, 8±1;  ISO 17829
Length, L c mm 3,15 ≤ L ≤ 40 3,15 ≤ L ≤ 40 3,15 ≤ L ≤ 40  ISO 17829
Moisture, M As received, w-% wet basis M10 ≤ 10 M10 ≤ 10 M10 ≤ 10  ISO 18134-1, ISO 18134-2
Ash, A Dry Basis, w-% A1.5 ≤ 1,5 A1.5 ≤ 1,5 A5.0 ≤ 5,0  ISO 18122
Mechanical durability, DU As received, w-% DU97.5 ≥ 97,5 DU97.5 ≥ 97,5  DU96.0 ≥ 96,0 ISO 17831-1
Fines, F  As received, w-% F5.0 ≤ 5,0 F5.0 ≤ 5,0 F7.0 ≤ 7,0  ISO 18846
Additives d Dry Basis, w-% ≤ 2 w-%, Type and amount to be stated ≤ 2 w-%, Type and amount to be stated ≤ 2 w-%, Type and amount to be stated  
Net Calorific Value, Q As received, MJ/kg Q17.0 ≥ 17,0 Q16.5 ≥ 16,5 Q16.5 ≥ 16,5  ISO 18125
Bulk Density, BD kg/m3 BD625 ≥ 625 BD600 ≥ 600 BD600 ≥ 600  ISO 17828
Ash melting
behaviour e
°C Should be stated Should be stated Should be stated ISO 21404
 
Elemetrary Composition
Unit I1 I2 I3 Analysis Method
Nitrogen, N Dry Basis, w-% N0.3 ≤ 0,3 N0.5 ≤ 0,5 N1.5 ≤ 1.5 ISO 16948
Sulphur, S Dry Basis, w-% S0.05 ≤ 0,05 S0.05 ≤ 0,05 S0.05 ≤ 0,05 ISO 16994
Chlorine, Cl Dry Basis, w-% Cl0.05 ≤ 0,05 Cl0.05 ≤ 0,05 Cl0.05 ≤ 0,05 ISO 16994
Arsenic, As Dry Basis, mg/kg ≤ 2 ≤ 2 ≤ 6 ISO 16968
Cadmium, Cd Dry Basis, mg/kg ≤ 1,0 ≤ 1,0 ≤ 10 ISO 16968
Chromium, Cr Dry Basis, mg/kg ≤ 15 ≤ 15 ≤ 15 ISO 16968
 

    a Negligible levels of glue, grease and other timber production additives (< 1 w-%) used in sawmills during production of timber and timber product from virgin wood are acceptable if all chemical parameters of the pellets are clearly within the limits and concentrations are too small to be concerned with.

    b Selected size D06 or D08 of pellets to be stated. Internal particle size distribution has to be agreed between buyer and seller.

    c Amount of pellets longer than 40 mm can be 1 w-%. Maximum length shall be < 45 mm.

    d Type of additives to aid production, delivery or combustion (e.g. pressing aids, slagging inhibitors or any other additives like starch, corn flour, potato flour, vegetable oil,...). Also additives which are used after production, before unloading to end-user storages, shall be stated similarly (type and amount).

    e All characteristic temperatures (shrinkage starting temperature (SST), deformation temperature (DT), hemisphere temperature (HT) and flow temperature (FT) in oxidized conditions should be stated.


*Exact technical specification of Non-standard Wood Pellet products can be inserted in the Electronic Trading System and published by the suppliers.

Unit PFI Premium PFI Standard PFI Utility Testing Standard
Bulk Density, BD lb/cu ft 40.0-46.0 38.0-46.0 38.0-46.0 ASTM E 873
Diameter, D inch 0.23-0.285 0.23-0.285 0.23-0.285 NIST
Diameter, D mm 5.84-7.25 5.84-7.25 5.84-7.25 NIST
Length, L (>1.50 inch) %

≤ 1.0

≤ 1.0

≤ 1.0

NIST
Mechanical durability, DU %

≥ 96.6

≥ 96.6

≥ 96.6

LD2668.T4 1962 Y68
Fines, F (At Mill Gates) %

≤ 0.5

≤ 0.5

≤ 0.5

 

Inorganic Ash %

≤ 1.0

≤ 2.0

≤ 6.0

D 1102-84
Moisture, M %

≤ 8.0

≤ 10.0

≤ 10.0

ASTM E 871
Chloride ppm

≤ 300

≤ 300

≤ 300

ASTM E 776
Ash Fusion °F NA NA NA ASTM D 1857
Heating Value BTU/h NA NA NA ASTM E 711
Additives and Binders % NA NA NA

*Exact technical specification of Non-standard Wood Pellet products can be inserted in the Electronic Trading System and published by the suppliers.

Unit Grade 1 Grade 2 Grade 3 Grade 4
Diameter, D mm 6 - 8 6 - 8 6 - 8 6 - 25
Length, L mm ≤ 32 ≤ 32 ≤ 32 ≤ 32
Unit Volume Mass / Bulk Density, BD ㎏/㎥ ≥ 640 ≥ 600 ≥ 550 ≥ 500
Moisture, M % ≤ 10 ≤ 10 ≤ 15 ≤ 15
Ash, A % ≤ 0.7 ≤ 1.5 ≤ 3.0 ≤ 6.0
Fine, F % < 1.0 < 1.0 < 2.0 < 2.0
Mechanical Durability, DU % ≥ 97.5 ≥ 97.5 ≥ 95 ≥ 95
Net Calorific Value, Q kcal/kg

( MJ/kg )

≥ 4,300

( ≥ 18.0 )

≥ 4,300

( ≥18.0 )

≥ 4,040

( ≥ 16.9 )

≥ 4,040

( ≥ 16.9)

Sulphur, S % < 0.05 < 0.05 < 0.05 < 0.05
Chlorine, Cl % < 0.05 < 0.05 < 0.05 < 0.05
Nitrogen, N % < 0.3 < 0.5 < 0.7 < 1.0
Arsenic, As mg/kg ≤ 1.0 ≤ 1.0 ≤ 1.0 ≤ 1.0
Cadmium, Cd mg/kg ≤ 0.5 ≤ 0.5 ≤ 0.5 ≤ 0.5
Chromium, Cr mg/kg ≤ 10 ≤ 10 ≤ 10 ≤ 10
Copper, Cu mg/kg ≤ 10 ≤ 10 ≤ 10 ≤ 10
Lead, Pb mg/kg ≤ 10 ≤ 10 ≤ 10 ≤ 10
Mercury, Hg mg/kg ≤ 0.05 ≤ 0.05 ≤ 0.05 ≤ 0.05
Nickel, Ni mg/kg ≤ 10 ≤ 10 ≤ 10 ≤ 10
Zinc, Zn mg/kg ≤ 100 ≤ 100 ≤ 100 ≤ 100
Ash melting behaviour To be stated as recommendation
Additives % < 2.0 < 2.0 < 2.0 < 2.0

*Exact technical specification of Non-standard Wood Pellet products can be inserted in the Electronic Trading System and published by the suppliers.

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