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Wood briquettes
Wood briquettes consist of energetically recyclable, untreated wood by-products incurring during manufacturing processes, such as sawing, planning or milling. They are dried and grouted under very high pressure, without adding any binding agents, to evenly sized and firm briquettes. Since the wood is highly compressed during briquetting, it almost assumes |
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the combustibility of brown coal briquettes; however, its advantage is that the ashes and nitrate it produces during combustion are kept to a minimum.
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Characteristics: Wood briquettes consist of a mixture of different wood by-products. The raw materials are mixed, repeatedly grinded and afterwards dried in a drum dryer to a residual moisture content of 7–10 % (For comparison: dry wood has got a residual moisture content of approx. 20%). The low moisture content is necessary since the briquetting is done without adding any binding agents or chemical additives. Grouting of the raw product would be impossible with higher moisture contents. The grouted briquettes would not hold their shape and fall apart. Due to the grinding, drying and final grouting, the briquettes are free of any vermin and pests.
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Due to the massive elimination of water and the high compression, the briquettes show a heat value of 5.5kWh/kg. (For comparison: wood with a residual moisture content of 20% has got a heat value of approx. 3.5 kWh/kg). The combustion timeamounts to approx. 1-1.5 hours, the glow time to approx. 3-3.5 hours. Burn-off and dissipation of heat linked with it take place very evenly due to the homogeneity of the wood briquettes. At the end of the combustion only 0.5–1% ashes remain. Regardless whether round or square, the briquettes are handy, nearly airtight sealed in various package sizes and thus protected against moisture.
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