NOVELTY - A silicon manufacturing apparatus (10) reduces silicon tetrachloride with zinc and produces highly purified polycrystalline silicon. The apparatus has a reactor (2) having up-and-down detachable reactor upper side main component (4) and reactor lower side main component (6), zinc gas supply pipeline, and silicon tetrachloride gas supply pipeline. The pipelines are connected to upper portion of the reactor upper side main component.    USE - Apparatus for manufacturing silicon (claimed) e.g. polycrystalline silicon used for semiconductor for polycrystalline silicon solar cell.    ADVANTAGE - The apparatus efficiently and economically enables to reduce silicon with high productivity. The quiescent time of reactor is reduced.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of silicon. Silicon tetrachloride gas and zinc gas are reacted in reactor. The reactor upper side main component (A) holding silicon growth component produced by the reaction, is moved and mounted on recovery unit (A), and temperature is reduced. The reactor upper side main component (B) is moved on recovery unit (B) and mounted on reactor lower side main component, and reaction is carried out. The silicon growth components are recovered, and reactor upper side main component is heated. The reactor upper side main component (B) holding silicon growth component produced by the reaction, is moved and mounted on recovery unit (B), and temperature is reduced. The reactor lower side main component is moved and reactor upper side main component (A) is mounted. Silicon growth components are recovered, and reactor upper side main component (B) is heated. The above process is repeated, and silicon is continuously manufactured.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of silicon manufacturing apparatus.    Reactor (2)    Reactor upper side main component (4)    Reactor lower side main component (6)    Heat-resistant packing (8)    Silicon manufacturing apparatus (10)    Trolley (12)    Rail (14)    Top plate (16)    Zinc gas supply nozzle (18)    Silicon-tetrachloride gas supply nozzle (20)    Discharge port (24)    Zinc chloride condensing apparatus (26)    Zinc chloride storage tank (29)    Collection receptacle (30)