The utility model discloses a prolong ware in quick cooling for low -grade antimony ore system antimonony oxide, it includes prolongs the pipeline, on prolong the pipeline and be equipped with cooling layer outward, on prolong the pipeline middle part and be equipped with the cooling fin socket, be equipped with the cooling fin slot in the cooling layer, the cooling fin slot aligns with cooling fin socket position, be equipped with fixed buckle on the cooling in situ wall of cooling fin slot one side, be equipped with the water cooling piece in the cooling fin slot, it runs through the cooling layer through cooling fin slot and cooling fin socket and prolongs the pipeline on and to cross the water cooling piece, crossing water cooling piece one end and being equipped with and fixing the fixed slot that the buckle shape is agreed with, the water cooling piece other end is equipped with the water inlet excessively, and the water inlet top is equipped with the delivery port, is equipped with back the type guiding gutter excessively in the water cooling piece, cooling layer below is equipped with the inlet tube, and cooling layer opposite side top is equipped with the drain pipe. The utility model discloses can cool off fast the result in the antimonony oxide production process, the refrigerated effect is better, can improve production quality, improves the utilization ratio of raw materials in the fire cabinet to it is simple to have cooling structure, advantage that area is little.