METHOD FOR RECYCLING CHROMIUM-CONTAINING DUST

摘要

PROBLEM TO BE SOLVED: To provide a recycling method by which chromium-containing dust produced in a refining step of chromium-containing molten iron in a converter type refining furnace can be processed by large quantity at a low cost without degrading the productivity of an iron bath type converter.SOLUTION: A recycling method includes: a first step where dust produced in the refining step of chromium-containing molten iron using an iron bath type converter is injected to hot metal in another hot-metal conveyance container to reduce iron oxide included in the dust and collect reduced iron in the hot metal in the hot-metal conveyance container, and after chromium oxide included in the dust is condensed in slag in the hot-metal conveyance container, the slag is removed: and a second step where the slag removed in the first step is put into the iron bath type converter to reduce chromium oxide in the slag removed in the first step and collect chromium in the hot metal in the iron bath type converter.