About 85% of China's coal is used for direct combustion, mainly including thermal power generation, industrial boilers, civil heating and household stoves. Half of the coal is used for power generation (coal power) and the other half is used for industrial and domestic heat sources. (Burn coal). In addition to the main component carbon, coal also contains hydrogen, oxygen, sulfur, nitrogen, silicon, aluminum, calcium, iron and other elements. Therefore, when coal burns, it will emit a large amount of SO2, CO2 and soot into the air. A large amount of furnace ash is generated, causing serious environmental pollution. By extracting non-carbon components such as sulfur, silicon, aluminum and iron from coal, a "clean carbon fuel" with high carbon content and low impurity content can be obtained, which effectively reduces environmental pollution caused by coal combustion, and at the same time, extracts the ore. The use of substances (nano-silica, alumina, iron oxide, etc.) can effectively balance the price of clean coal.
Huasheng Graphite Co., Ltd. cooperated with the Siberian Branch of the Russian Academy of Sciences to jointly develop a clean carbon fuel for coal purification and a “dirty coal to clean coal” technology for products such as high value-added nano-silica, which is based on Russia’s original international lead. The working principle of "high-speed metallurgical purification of mineral elements" has obtained the advantages of high clean coal content (>99%) and high utilization value of by-products. Clean coal can be widely used in fields such as thermal power generation, industrial boilers, civil heating, household stoves, and barbecue carbon. The market is huge.
Huasheng Graphite Co., Ltd. cooperates with the R&D team led by Professor Aleike, the top scientist in the field of mineral extraction in the Siberian Branch of the Russian Academy of Sciences, using the internationally advanced "High-speed Metallurgical Purification of Mineral Elements" invented by Russia to Hegang City, Heilongjiang Province. Low-sulfur coal is used as raw material to develop ultra-high-purity coal extraction technology for extracting mineral elements from coal-based clean carbon fuel. Different from the traditional physical method of coal purification (washing coal), the technology uses chemical reaction to dissolve non-carbon components such as minerals in coal, which can increase the carbon content in coal to over 99%, and obtain ultra-pure coal; The extracted minerals are converted into nano-silica, nano-alumina, nano-iron oxide and other products for comprehensive utilization, thereby effectively offsetting the cost increase of ultra-pure coal and reducing the price of clean coal. The chemicals used in the purification process can be recycled after recycling to avoid chemical consumption and emissions. The technology can also be used to purify graphite fine powder or recycled waste graphite electrode into high-purity graphite, which greatly enhances the utilization value of graphite.
Ultra-high purity clean coal can be used as a clean fuel because of its high carbon content, low ash content, sufficient combustion and high calorific value. It can also be used for the preparation of new carbon materials such as graphene and high thermal conductivity carbon fiber. It is only used for civil heating and household stove coal, and its consumption is very considerable. According to statistics, the annual coal consumption in rural areas of Hebei Province has reached more than 40 million tons, and the clean coal gap in Shandong Province has reached 15 million tons in 2016. Recently, the state has introduced a subsidy policy to promote the use of smokeless clean coal for civil heating.