![]() The main production units include: a MIDREX Direct Reduction Plant, with a rated annual capacity of 2.5 million tons two EAF melt shops, with total annual production capacity of 2.2 million tons and three Rolling Mills, with total annual production capacity of 2 million tons of reinforcing bars and wire rods. The AQS Bellara Steel Complex is equipped with the most advanced technology in the world and includes nine environmentally friendly production units, which guarantee maximum production efficiency and product quality that meets international standards. The first successful charge of HDRI to the AQS Electric Arc Furnace #1 (EAF #1) was on March 24. The plant is capable of producing both hot DRI (HDRI) and cold DRI (CDRI) and is equipped to transfer and charge HDRI to the nearby AQS steel mill to take advantage of the retained heat. 154, pp.16th April 2021 AQS Begins DRI Production in Algeriaīellara Industrial Zone (El Milia, Wilaya de Jijel), ALGERIA (April 8, 2021) – Algerian Qatari Steel (AQS) has announced the start-up of its 2.5 million tons per year (t/y) MIDREX ® Direct Reduction Plant on February 13 and first production of on-grade Direct Reduced Iron (DRI) a few days after. ![]() Donati, “Integrated bacterial process for the treatment of a spent nickel catalyst”, Journal of Hazardous Materials, Vol. Rhee, “Bioleaching of spent catalysts using cidophilic bacteria and its kinetic aspect”, Journal of Hazardous Materials, Vol.152, pp. Nam.,”Two stage leaching of activated spent HDS catalyst and solvent extraction of aluminium using organo-phosphinic extractant, Cyanex 272”, Journal of Hazardous Materials, Vol. ![]() Stanislaus., “Spent hydroprocessing catalyst management: A review, Part II-Advances in metal recovery and safe disposal methods”, Resources, Conservation and Recycling, Vol. Easton, “Recovery and encapsulation of heavy metals on refinery spent hydrotreating catalyst”, Water Science and Technology, Vol. Zyrnicki, “Preliminary results of metals leaching from a spent hydrodesulphurization (HDS) catalyst”, Physicochemical Problems of Mineral Processing, Vol. Hamid, “Recovery of nickel from spent catalyst from palm oil hydrogenation process using acidic solutions”, Journal of Industrial and Engineering Chemistry, Vol. Stanislaus, “Spent catalyst waste management: A review: Part I-Developments in hydroprocessing catalyst waste reduction and use”, Resources, Conservation and Recycling, Vol. Dufresne, “Hydroprocessing catalysts regeneration and recycling”, Appl. Silvy, “Future trends in refining catalyst market”, Appl. Reddy.,”Nickel recovery from spent Raneynickel catalyst through dilute sulfuric acid leaching and soda ash precipitation”, Journal of Hazardous Materials, Vol. 100% efficiency was achieved at 140 ☌ for 120 minutes, nitric acid concentration of 1.5 mm, Rpm of 600 and 40 s/l 40 grams per liter.Ĭatalyst, high-pressure hydrogenation, nitric acid, nickel In this study, the parameters of temperature, concentration, time and Rpm were studied using pressurized dissolving method. The present research studied the Nickel recovery from spent catalysts of NiO/Al2O¬3 used in reduction gas reliefs of the production of sponge iron unit. Through the hydrometallurgy method, the present study investigates a possible solution to the problem of catalyst depot (due to heavy metals such as nickel) via nickel recovery, which may increase the possibility of selling or re-using the precious and expensive metal. Thus, the problem of spent catalysts will become a serious environmental challenge. The steel industry in Iran hopes to employ the MIDREX technique for the 80 percent of the 50 million tons of steel. ![]() As an expensive material used in MIDREX method for steel units, this type of catalyst has major environmental problems after accumulation. In the process of direct reduction of iron pellet and production of sponge iron, NiO/Al2O3 act as a catalyst for the generation of carbon monoxide and hydrogen by vapor and natural gas.
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