Fecha de publicación: 18/07/2017 Fuente: WIPO "circular economy" The invention discloses a vehicle hub fixed sleeve with high hardness and compact structure. The vehicle hub fixed sleeve is characterized by comprising the following components in parts by weight: 500-550 of pyrite, 300-310 of siderite, 10-12 of bauxite, 8-9 of bornite, 1-2 of smithsonite, 7-8 of ilmenite, 30-40 of bauxite, 4-5 of franckeite, 5-6 of cassiterite, 3-4 of kaolinite, 2-3 of hydromica, and 10-11 of millerite. The chlorination segregation and pressure leaching processes are adopted to pretreat ores, so that the trace metal extracting efficiency in low-grade ores is improved, the purity of trace alloys in alloy materials is improved, and part materials are high in hardness and compact in structure.