Charcoal Dust / Charcoal Powder
Premium chardust for briquette production
Charcoal dust, charcoal powder is the blackish residue consisting of mostly carbon obtained by removing water and other volatile constituents from wood or other biomass substances. Carbon or char packs more potential energy per unit than raw wood. Chardust is used in the production of barbecue charcoal briquettes.
Charcoal Dust Features
- High volumetric energy density
- High carbon content: 74,2 %
- High homogenity of the fuel
- Low water content: 6,2%
- Low ash content: 4,8%
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Charcoal Dust Details
1. Product Description
Charcoal dust obtained from wood or biomass is a high energy density green fuel in a powder form. Chardust can be made into various shapes of charcoal briquettes for use in BBQ appliences.
How charcoal is made?
Making charcoal is an ancient process of carbonizing wood to form charcoal that is a more efficient fuel source than the original raw wood. Commercial Charcoal is typically made from wood but it could be made from any numbers of organic materials. Char is created by carbonizing raw materials like wood, dry biomass ( coconut shells, peanut shells) or other agricultural substances. The process of production is referred to as slow pyrolysis. Pyrolysis is heating the biomass in a low or no oxygen environment. it produces 3 prymary products: liquid, char and gas.
In commercial processing, the controlled burning process takes place in large concrete or steel silos with very little oxygen. When these plant or woody materials are subjected to high temperatures in a low oxygen environment the process of carbonization takes place and char is created. Without oxygen, the wood can't actually catch on fire and instead of combusting the material is chemically decomposed. Everything in the wood besides the carbon melts away.
The result of this process is a lightweight, black, porous material consisting of lumps, chunks and powder. The relative yield of products from pyrolysis varies from about 25% to 45% of the original weight. The char yield varies according to the biomass used and the charring temperature.
Until this point all wood charcoal and non-wood charcoal production is done basically in the same way, so lump charcoal pieces are produced the same way as the raw material for the natural charcoal briquettes.
Barbecue charcoal types
The charcoal landscape splits into two main segments:
Hardwood lump charcoal chunks are made from carbonized hardwood material. Harwood can come from recycling scrap from saw mills and from flooring, furniture, and building materials manufacturers. Another source is from sustainable forestry carbonizing branches, twigs, blocks, trim, and other forestry scraps. Often they are carbonized to different degrees because there are so many different sized lumps.
Charcoal briquettes are made from the char dust, charcoal powder, crushed charcoal chunks. To form the briquettes the charcoal is pulverized into dust form. The char powder is than mixed with coal binder or natural binder and compressed under high pressure in a briquetting machine to form briquettes. Briquetting further improves the potential energy density and from this perspective it is an upgrading to the char dust.
What is charcoal briquetting ?
Briquetting is the process of converting low bulk density biomass into high density and energy concentrated fuel briquettes. The process was developed by Henry Ford in the 1920's for using up wood residues from the car manufacturing and turning them into a useful fuel source. it is the process of compressing loose bits of material into compact briquettes.
The carbonized char powder lacks plasticity as the biomass looses its lignin content in the carbonization process. Binder is added to the char powder and mixed to ensure that the dusty carbonized char sticks together. This enhances the charcoal adhesion but can result in shorter burns and more ash. The ratio of binder to fuel varies from producer to producer. The binders may be as simple as vegetable starch.Common types of natural briquette binders used in the industry are starch (such as corn, rice flour, sweet potato paste), molasses and gum Arabic .
The last phase in the briquetting process is adding the char and binder mixture into briquetting machine. The mixture is loaded into the briquetting machine to form uniform size and shape briquettes.