Farmanov, BehzodTavashov, Shaxzod2025-12-012025-12-012022-04-0112694-9970https://dspace.kstu.uz/xmlui/handle/123456789/4174Expansion of the production of high-quality metal alloys will lead to the consumption of large amounts of rare and expensive alloying elements in the metal trade. This leads to the development of new technologies that save efficient resources. Nickel is imported for the production of steel and chromium cast iron alloys containing 2% high-quality nickel. However, in the petrochemical and chemical industries of the Republic, more than 1,000 tons of catalyst waste and precious metals (Ni, Mo, Cu, Cr, Zn and others) containing 5% to 50% are wasted annually. The recycling of waste alloys and the use of used catalysts will save the currency spent on precious metals in the manufacturing industry, as well as reduce the harmful effects of waste on the environment.enCatalysts used in the chemical industry are widely used, including nickel.GIAP-8 (8% NiO, 92% Al2O3);GIAP-16 (25% NiO, 57% Al2O3, 8% MgO, 9% CaO, 1% BaO);NKM-4A (35% NiO, 65% Al2O3);ReforMAX-330 (10% NiO, 69.1% Al2O3, 7.6% CaO, 10.3% MgO, 3% Bosch), TO-2 (38% NiO, 12% Cr2O3, 50% Al2O3).Article