A harmless comprehensive utilization method for liquid aluminum-
chromium slag comprises the following steps: (1) placing high-temperature liquid aluminum-
chromium slag in a steel
ladle, pouring the high-temperature liquid aluminum-
chromium slag into an
electric arc furnace for later use, and adding
coke particles; (2) starting an
electric arc furnace, enabling the mixture to react by utilizing high temperature generated by an
electrode arc, and obtaining an upper layer alpha-Al2O3 phase high-purity fused
corundum and a lower layer
chromium carbide after the reaction is finished; (3) after the high-temperature reduction
smelting is completed, carrying out
hydrogen-
argon mixed gas bottom blowing on furnace liquid in a furnace body, and then separating high-purity fused
corundum from
chromium carbide; (4) crushing, screening and packaging the high-purity fused
corundum to obtain a high-purity fused corundum product; performing
sand blasting treatment on the surface of the
chromium carbide to remove impurities, crushing, screening and packaging to obtain a chromium
carbide product; according to the method, the high-temperature liquid aluminum-chromium slag generated in the
metal chromium production process is used as the
raw material, the
coke is used as the
reducing agent, and the
electric arc furnace is used for
smelting to obtain the high-purity fused corundum and chromium
carbide with high additional value, so that the energy is greatly saved, the process flow is shortened, and the production efficiency is improved.