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Calcium carbide residue can replace limestone to produce cement
Xinjiang Tianye Chemical Industrial Park PVC matching project—carbide slag 100% replaces natural limestone 2000 tons/day NSP cement production line. Since it was put into production, it has been continuously operated for 170 hours, and cumulatively produced about 13,000 tons of clinker. stable quality. The successful commissioning of this new type of dry process cement plant not only opens up new avenues for the treatment and clean production of waste slag in the chlor-alkali industry, but also contributes to the achievement of energy conservation, emission reduction and comprehensive utilization of resources in the cement industry.
China's oil resources are short of resources, and coal and limestone resources are relatively abundant. Combining the current status of chlor-alkali industries, the use of calcium carbide method to produce PVC is of great significance to China's PVC industry. However, the impact of calcium carbide slag on the environment has always been the production of PVC by calcium carbide process. problem. With the continuous rise of oil prices in the international market, domestic production of acetylene by the calcium carbide process has accounted for more than 50% of the total amount of acetylene. However, the production of 1 ton of PVC requires the discharge of 1.6 tons of calcium carbide slag. If calcium carbide slag cannot be used comprehensively, it will cause environmental pollution. As early as in 2005, the National Comprehensive Utilization Technology for Comprehensive Utilization of Energy Resources and Environmental Protection Technologies Encouraged by the State was issued jointly by the National Development and Reform Commission, the Ministry of Science and Technology, and the State Environmental Protection Administration. With the concept of circular economy becoming more and more popular, the use of calcium carbide slag to produce cement has also become the focus of calcium carbide process PVC companies.
It is understood that the production line put into operation this time is designed by Xinjiang Tianye (Group) Company commissioned by the Xinjiang Building Materials Design and Research Institute, and the entire project will construct two 2000 tons/day NSP cement production lines. The new technology used in the production line, such as decomposition outside the kiln, is designed and researched by the Xinjiang Building Materials Design and Research Institute for 100% calcium carbide slag instead of lime raw materials. Raw materials and other raw materials of cement all use industrial slag.
According to reports, the vinyl chloride project of Xinjiang Tianye Group has fully considered the protection of the surrounding environment from the beginning of its design. In order to eliminate calcium carbide slag contamination, the raw material used in the production line is dry caustic carbide slag and other industrial waste slag ingredients in the park. After the calcium carbide slag and other grinding auxiliary materials are evenly mixed, the continuous homogenization tank and the preheater with a decomposition furnace are used for preheating. Kiln system, through the calcination, cooling, to produce qualified clinker.
Xinjiang Tianye Chemical Industrial Park PVC matching project—carbide slag 100% replaces natural limestone 2000 tons/day NSP cement production line. Since it was put into production, it has been continuously operated for 170 hours, and cumulatively produced about 13,000 tons of clinker. stable quality. The successful commissioning of this new type of dry process cement plant not only opens up new avenues for the treatment and clean production of waste slag in the chlor-alkali industry, but also contributes to the achievement of energy conservation, emission reduction and comprehensive utilization of resources in the cement industry.
China's oil resources are short of resources, and coal and limestone resources are relatively abundant. Combining the current status of chlor-alkali industries, the use of calcium carbide method to produce PVC is of great significance to China's PVC industry. However, the impact of calcium carbide slag on the environment has always been the production of PVC by calcium carbide process. problem. With the continuous rise of oil prices in the international market, domestic production of acetylene by the calcium carbide process has accounted for more than 50% of the total amount of acetylene. However, the production of 1 ton of PVC requires the discharge of 1.6 tons of calcium carbide slag. If calcium carbide slag cannot be used comprehensively, it will cause environmental pollution. As early as in 2005, the National Comprehensive Utilization Technology for Comprehensive Utilization of Energy Resources and Environmental Protection Technologies Encouraged by the State was issued jointly by the National Development and Reform Commission, the Ministry of Science and Technology, and the State Environmental Protection Administration. With the concept of circular economy becoming more and more popular, the use of calcium carbide slag to produce cement has also become the focus of calcium carbide process PVC companies.
It is understood that the production line put into operation this time is designed by Xinjiang Tianye (Group) Company commissioned by the Xinjiang Building Materials Design and Research Institute, and the entire project will construct two 2000 tons/day NSP cement production lines. The new technology used in the production line, such as decomposition outside the kiln, is designed and researched by the Xinjiang Building Materials Design and Research Institute for 100% calcium carbide slag instead of lime raw materials. Raw materials and other raw materials of cement all use industrial slag.
According to reports, the vinyl chloride project of Xinjiang Tianye Group has fully considered the protection of the surrounding environment from the beginning of its design. In order to eliminate calcium carbide slag contamination, the raw material used in the production line is dry caustic carbide slag and other industrial waste slag ingredients in the park. After the calcium carbide slag and other grinding auxiliary materials are evenly mixed, the continuous homogenization tank and the preheater with a decomposition furnace are used for preheating. Kiln system, through the calcination, cooling, to produce qualified clinker.