DEVICE FOR PRODUCING LITHIUM SULFIDE, AND METHOD FOR PRODUCING LITHIUM SULFIDE

In order to provide an apparatus for producing lithium sulfide and a method for producing lithium sulfide capable of producing high-purity lithium sulfide in the absence of a solvent by using lithium hydroxide as a starting material without causing aggregation of lithium hydroxide particles and adhesion of a formed product to a reaction container, provided is an apparatus for producing lithium sulfide, comprising: a reaction container for allowing lithium hydroxide powder to be in contact with a hydrogen sulfide gas; a stirring blade inside the reaction container; a first heating apparatus that keeps the temperature of an inner wall of the reaction container that is in contact with the powder; and a second heating apparatus that keeps the temperature of an inner wall of the reaction container that is not in contact with the powder, and a method for producing lithium sulfide, wherein, in the absence of a solvent, lithium hydroxide is incorporated into a reaction container in an amount of 0.1 kg or more relative to 1 liter (I) of the capacity of the reaction container, the flow rate of hydrogen sulfide is 5 liters (l)/min or less relative to 1 kg of the lithium hydroxide, and the lithium hydroxide is reacted with the hydrogen sulfide while stirring the lithium hydroxide so as not to allow it to be stagnated.