Overview
Shenmu Blue Charcoal is a premium semi-coke product derived from low-volatility coal through medium-temperature carbonization. Originating from Shenmu City in Shaanxi Province, China, it has gained prominence for its eco-friendly combustion characteristics and high energy efficiency. Unlike traditional coal, Shenmu Blue Charcoal produces minimal smoke and harmful emissions during burning, making it a cleaner alternative for industrial and domestic use. Its production process involves retort coking at 600-800°C, which removes most volatile components while retaining high fixed carbon content.
Physical and Chemical Properties
Shenmu Blue Charcoal exhibits a dense structure with a glossy black appearance. Its typical particle size ranges from 25mm to 80mm for industrial use, while smaller granules (10-25mm) are packaged for household applications. The material is hydrophobic and resistant to weathering. Chemically, it contains 82-88% fixed carbon and less than 0.5% sulfur, significantly lower than raw coal. The ash content is typically below 10%, and its ignition point is around 450°C. These properties contribute to sustained, high-temperature combustion with a flame temperature exceeding 1000°C in optimal conditions.
Main Applications
In metallurgy, Shenmu Blue Charcoal serves as a reducing agent in ferroalloy production and as a carburizer in foundries. Its low sulfur content prevents contamination of metal products, while its high calorific value ensures efficient smelting operations. The chemical industry utilizes it as a feedstock for calcium carbide and silicon production. For residential use, it's favored for winter heating in northern China and as barbecue fuel due to its smokeless properties. Emerging applications include water filtration (as activated carbon precursor) and soil amendment in agriculture.
Safety and Storage
While Shenmu Blue Charcoal is generally safe to handle, precautions against dust explosion are essential during bulk storage and transportation. Facilities should implement dust control measures and maintain relative humidity below 70% to prevent spontaneous heating. Storage areas must be well-ventilated and equipped with Class D fire extinguishers. Stack height should not exceed 3 meters to prevent compaction and heat accumulation. For long-term storage (>6 months), periodic temperature monitoring is recommended to detect any exothermic reactions.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with direct access to Shenmu mining resources to ensure consistent quality. Key procurement parameters include calorific value (≥6000 kcal/kg), sulfur content (<0.5%), and mechanical strength (≥85% particle integrity after drop test). Bulk purchases (typically >100 tons) often qualify for tiered pricing. Consider FOB Shenmu pricing models to optimize logistics costs. Quality certifications to verify include GB/T 25211-2010 (Chinese national standard for semi-coke) and ISO 9001. Seasonal demand peaks in Q4 may affect availability and pricing.
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