The Impact of Catalyst on Tail Gas during Vanadium-Titanium Magnetite Carbon-Containing Pellet Reduction | E3S Web of Conferences

By:Admin on 2023-06-09 01:35:33

Vanadium-titanium magnetite, a kind of iron ore, is widely used in the production of steel due to its high iron content and strong magnetism. However, the production process generates tail gas, which contains harmful gases like CO, SO2, NOx, and particulate matter. These pollutants not only harm the environment but also pose serious health risks to workers. Therefore, it is important to mitigate the emissions from the production process of vanadium-titanium magnetite.One effective way to reduce the tail gas emissions is through the use of a catalyst. A catalyst is a substance that speeds up a chemical reaction without being consumed in the process. In the case of vanadium-titanium magnetite production, a catalyst can reduce the amount of pollutants generated during the reduction of carbon-containing pellets.Recently, a research team from a company focused on environmental protection and energy conservation, studied the effect of a catalyst on the tail gas during the reduction of vanadium-titanium magnetite carbon-containing pellets. The researchers used a chemical reactor to simulate the reduction process and then analyzed the tail gas using advanced equipment.The research team found that the use of a catalyst significantly reduced the emissions of CO, SO2, and NOx. The reduction rates of these pollutants were 64.3%, 75.4%, and 31.2%, respectively, compared to the process without a catalyst. This means that by using a catalyst, the production of vanadium-titanium magnetite can be made less environmentally harmful, reducing the impact on the ecosystem and improving the health of workers.Moreover, the researchers found that the catalyst also improved the reduction rate of the carbon-containing pellets. The reduction rate increased from 82% to 92% when using the catalyst, which means that the-quality of the final product also improved. This indicates that the use of a catalyst does not only have environmental benefits but also economic advantages.The catalyst used in the study was a new type of rare earth catalyst developed by the company. It has a high catalytic activity, stability, and selectivity, making it suitable for use in the reduction of vanadium-titanium magnetite carbon-containing pellets. The company plans to promote the use of the catalyst in the production process of vanadium-titanium magnetite, to reduce the environmental impact and improve the efficiency of the process.Overall, the research findings show that the use of a catalyst can significantly reduce the emissions of harmful gases during the production of vanadium-titanium magnetite. This not only benefits the environment and human health but also improves the quality and efficiency of the process. The development of new and effective catalysts is essential for reducing the emissions from industrial processes and achieving sustainable development.

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Spent Co-Mo/Al2O3 catalyst treated with sulfuric acid baking and leaching for improved metal recovery

By:Admin on 2023-06-09 01:32:24

A revolutionary method for the recovery of metals has been developed by scientists at the National Metallurgical Laboratory (NML) in India. Using low-temperature sulfuric acid baking followed by a mild leaching process, the researchers were able to dissolve metals from pre-oxidized refinery plant spent Co-Mo/Al2O3 catalyst. The direct sulfuric acid leaching of the same sample produced poor recoveries of aluminum and molybdenum, whereas leaching after sulfuric acid baking significantly improved the recoveries of these two metals.The pre-oxidized spent catalysts used in this study were obtained from a Korean refinery plant and found to contain 40% aluminum, 9.92% molybdenum, 2.28% cobalt, 2.5% carbon, and trace amounts of other elements such as iron, nickel, sulfur, and R XRD. The host matrix was identified to be poorly crystalline gamma-Al2O3.The researchers studied the effect of various baking parameters such as catalyst-to-acid ratio, baking temperature, and baking time on the percentage dissolution of metals. They observed that the dissolution of metals increases with an increase in the baking temperature up to 300 degrees Celsius, after which it decreases with further increases in the baking temperature. Under optimum baking conditions, more than 90% of cobalt and molybdenum, and 93% of aluminum could be dissolved from the spent catalyst with the following leaching conditions: H2SO4 = 2% (v/v), temperature = 95 degrees Celsius, time = 60 minutes, and pulp density = 5%.This method has the potential to revolutionize the metal recovery industry by offering a more efficient and cost-effective process for the recovery of valuable metals from spent catalysts. This will also reduce the negative impact of spent catalysts on the environment, as they will no longer have to be disposed of in landfills.The NML is one of India's leading research institutes in the field of metallurgy, materials science, and engineering, and this discovery demonstrates its ongoing commitment to advancing the field. The institute is dedicated to research and innovation in the metallurgical industry and has a history of developing cutting-edge technologies that benefit the Indian economy.Furthermore, the NML is also involved in providing consultation services to industries and government agencies, making it a key player in shaping the Indian economy and industrial landscape. In addition to metal recovery, the institute is also engaged in research and development in areas such as corrosion science, welding technology, and non-ferrous metallurgy.The success of the method developed by the NML team demonstrates the institute's ability to leverage its expertise in the field of metallurgy to find solutions to some of the most pressing challenges facing society today. The potential of this discovery to benefit industry and the environment cannot be overstated, and it is a testament to the ongoing dedication of the NML to advancing the field of metallurgy and materials science.In conclusion, the development of a new and more efficient method for the recovery of valuable metals using low-temperature sulfuric acid baking and mild leaching represents a major breakthrough in the field of metallurgy. This discovery has the potential to revolutionize the metal recovery industry by offering a more efficient and cost-effective process for the recovery of valuable metals from spent catalysts, ultimately reducing the negative impact of spent catalysts on the environment. The NML's commitment to research and innovation continues to be a driving force in shaping the Indian economy and industrial landscape.

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