The aluminum industry relies on calcined petroleum coke as an anode material for the smelting of aluminum oxide into aluminum metal. While distillate residues from biomass pyrolysis oils can convert into calcined coke with promising elemental and physical properties, no studies have produced calcined biocoke continuously from rotary kilns. Using a solids feeder and rotary tube furnace, blends of green petroleum coke and biocoke underwent continuous calcination. The biocoke from pyrolysis bio-oil distillation residues contained ∼13 wt % oxygen. In control experiments, the furnace converted green petroleum coke into calcined petroleum coke within industry specifications. Properties measured include % anisotropy (indicated by polarized light microscopy), porosity, crystallite thickness (L c ), and trace element concentrations. With biocoke blends (10 and 27 wt %), the effects on properties increased with respect to the blend concentration. Microscopy and X-ray diffraction indicated the blends to be mostly anisotropic with some amorphous domains remaining in the blended product. Steady-state sulfur concentrations decreased from 3.2 to 2.7 wt %. Nickel and vanadium successfully decreased to desirable limits, especially when 27 wt % biocoke was used. Adding biocoke increased phosphorous and titanium concentrations by 5−7 and 10 ppm, respectively. Blending 27 wt % biocoke with green petroleum coke to produce calcined coke for aluminum smelting anodes can reduce direct greenhouse gas emissions and the acidification potential by 54 and 27%, respectively, avoiding the emission of ∼800 kg CO 2 e and 0.7 kg SO 2 e for each metric ton of primary aluminum produced.