A reactor component according to an embodiment is used in a reactor that reacts a material to be treated in an environment where at least one of the material to be treated and an atmosphere contains sulfur or sulfide and is constituted of an alloy of which a principal component is Fe, which contains 13 to 35 percent by mass of Cr, and which contains a total of 0 to 35 percent by mass of Ni and Co.

Provided is a rotary sintering furnace that includes a furnace body assembly and a rapping device. The furnace body assembly includes a heating zone, a heat preservation zone, a cooling zone, a rotary furnace, a first heating device configured to heat the rotary furnace at the heating zone, a second heating device configured to heat the rotary furnace at the heat preservation zone, a cooling device configured to cool the rotary furnace at the cooling zone, and a driving device configured to drive the rotary furnace to rotate. The rapping device is configured to strike the rotary furnace, and includes a first rapping device disposed between the heating zone and the heat preservation zone, and/or a second rapping device disposed between the heat preservation zone and the cooling zone.

Provided is a rotary sintering furnace that includes a furnace body assembly and a rapping device. The furnace body assembly includes a heating zone, a heat preservation zone, a cooling zone, a rotary furnace, a first heating device configured to heat the rotary furnace at the heating zone, a second heating device configured to heat the rotary furnace at the heat preservation zone, a cooling device configured to cool the rotary furnace at the cooling zone, and a driving device configured to drive the rotary furnace to rotate. The rapping device is configured to strike the rotary furnace, and includes a first rapping device disposed between the heating zone and the heat preservation zone, and/or a second rapping device disposed between the heat preservation zone and the cooling zone.