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| Application of Biomass (Bamboo Charcoal) Alternative Fuel in Cement Production |
| Ningguo Cement Plant, Anhui Conch Cement Co., Ltd. , Ningguo Anhui 241312, China |
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Abstract Compared to traditional coal, biomass bamboo charcoal is more "green and clean," and can partially replace conventional fossil fuels required for cement production. This study analyzes the industrial and structural characteristics of biomass bamboo charcoal and conducts industrial substitution trials in a 5 000t/d clinker production line. During the trial, biomass bamboo charcoal was blended with coal at a 60% weight ratio, separately metered, fed into the coal mill, ground into a mixed powder, and then transported to the coal powder silo. After further metering, it was sent to the rotary kiln and precalciner for combustion. The results show that adding biomass bamboo charcoal has no significant adverse effects on the operation of the cement rotary kiln. However, due to its high alkali content, attention should be paid to the clinker's alkali levels, and the blending ratio should be reasonably controlled. Emissions of NOX and SO2 at the kiln tail increased slightly, but this can be mitigated by optimizing the air-coal-material ratio or using the charcoal in the precalciner at lower temperatures. The clinker's 3d strength increased by 0.7MPa, and its 28d strength improved by 1.8MPa, indicating enhanced clinker quality. The standard coal cons umption per ton of clinker decreased by 61.57kg/t. Based on an annual production of 1.5 million tons of clinker, this substitution could reduce CO2 emissions by approximately 255 000 tons per year, demonstrating significant energy-saving, emission-reducing, and carbon-cutting effects.
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Received: 18 December 2024
Published: 25 May 2025
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