The　electrolytic　aluminum　waste,　which　would　inevitably　be　produced　from　the　electrolytic　process　in　the　aluminum　industry,　is　harmful　to　environment　and　human　body.　Sending　it　to　the　coal-fired　boiler　seems　to　be　an　eco-friendly　scheme　to　dispose　the　waste.　In　this　study,　the　co-combustion　characteristics　of　the　electrolytic　aluminum　waste　(cathode　carbon　blocks　(CCB)　and　hardened　material　(HM))　and　the　bituminous　coal　(BC)　are　investigated.　During　the　thermogravimetric　experiment,　the　char　combustion　of　CCB　shows　the　similar　trend　as　that　of　BC　before　800　°C.　A　series　of　oxidization　reactions　of　carbon　in　anthracite　and　graphite　(both　are　the　raw　materials　of　CCB)　could　be　observed　at　relatively　high　temperature.　The　mass　of　HM　changes　smoothly　as　the　temperature　rises.　Both　CCB　and　HM　could　promote　the　ignitability　of　the　blends　efficiently,　in　which　the　ignition　point　comes　to　517.33　°C　when　the　mass　proportion　of　HM　is　30%.　The　addition　of　CCB　brings　out　the　second　peak　in　DTG　curves　of　the　blends.　The　burnout　performance　is　weakened　as　the　increase　of　mass　proportion　of　HM.　Remarkable　synergy　happens　during　the　co-combustion　process　between　BC　and　CCB/HM,　because　the　pre-exponential　factors　of　the　blends　increase　abruptly　compared　with　that　of　BC　in　the　early　stage　of　the　char　combustion.　Compared　with　the　activation　energy,　the　pre-exponential　factor　changes　more　intensely,　which　plays　a　more　important　role　in　the　co-combustion　process.　©　2022