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Comments on the Energy Efficiency Report for the Industrial Demonstration Project for the Comprehensive Utilization of 300,000 tons per year of high-alumina fly ash in the Shenhua Zhungeer Mining Area / Author/Source: Coal Chemical Industry 114 Forum Date: 2020-03-11 Views: 37 Recently, the Development and Reform Commission of Inner Mongolia Autonomous Region issued its comments on the energy efficiency report for this industrial demonstration project. It is understood that the project is located in the Dalu Industrial Park in Zhungeer Banner, with a total investment of 2,977.77 million yuan and an overall land area of approximately 43.2 hectares. The scale of this project is to process 300,000 tons of fly ash per year, producing 125,000 tons of alumina as an intermediate product, which is then used to manufacture 65,000 tons of electrolytic aluminum. Of this amount, 32,357.4 tons are converted into ordinary aluminum alloys, 22,520 tons into refined aluminum ingots, and 10,000 tons into high-purity aluminum ingots. This project enables multiple levels of utilization of coal resources in a single extraction process, facilitating a transformation from \"fuel\" to \"fuel + raw material\", and serves as a model for companies aiming to build green mines. Since 2004, Shenhua Zhuneng Group has relied on the coal resources in the Zhungeer mining area, which are characterized by high aluminum content, as well as high levels of gallium, lithium, and rare earth elements, to carry out comprehensive research on various aspects such as processes, materials, environmental protection, and safety related to the extraction of valuable metals like alumina, gallium, lithium, and rare earths from high-aluminum fly ash. As a result, a \"one-step acid dissolution method\" technology system was developed, and an industrial pilot plant with an annual capacity of 4,000 tons for the extraction of alumina and gallium from fly ash using a circulating fluidized bed process was built. After seven pilot-scale operational tests, the purity of the produced alumina (≥99.3%) exceeds the national standard for first-grade metallurgical grade products; the equipment system is stable and reliable, with a low failure rate ； Environmental protection and safety meet the **relevant regulatory requirements, and the conditions for industrialization are in place. In October 2017, the \"Industrial Demonstration Project for the Comprehensive Utilization of 300,000 tons per year of high-alumina fly ash in the Shenhua Zhungeer Mining Area\" was approved as a science and technology innovation project by China Shenhua Energy Co., Ltd.; the approved funding amount was 2,977.77 million yuan. The project will be constructed in the Dalu Industrial Park in Zhungeer Banner, Inner Mongolia, and its main components include the production of alumina and metallic aluminum, along with the necessary supporting infrastructure. The specific products and production volumes are as follows: 125,000 tons per year of metallurgical-grade first-class alumina (an intermediate product used entirely in electrolysis), 32,500 tons per year of ordinary aluminum (≥99.7%), 22,500 tons per year of refined aluminum (≥999.5%), 10,000 tons per year of high-purity aluminum (≥9999.5%), 5,000 tons per year of iron oxide red pigment, 12.5 tons per year of 4N-grade metallic gallium, 26,000 tons per year of water treatment agents, and 311 tons per year of lithium carbonate. At the end of 2018, the industrial demonstration project for the comprehensive utilization of 300,000 tons per year of high-alumina fly ash at the Shenhua Zhungeer mining area, operated by Shenhua Zhungeer Resources Comprehensive Development Co., Ltd., was approved by the Ordos Environmental Protection Bureau.