The utility model relates to the technical field of metallurgical furnace water
system recycling, and discloses a filtering device for reduction furnace
sewage self-circulation, which comprises a base, the top end of the base is fixedly connected with a reduction furnace body, and one side of the reduction furnace body is provided with a
sewage treatment box. A through round hole is formed in the outer wall of the side, facing the
sewage treatment tank, of the reduction furnace body, a filter screen is installed at the position, corresponding to the round hole, of the inner wall of the reduction furnace body, a sewage drainage
pipe is fixedly connected between the reduction furnace body and the
sewage treatment tank, and a
circulating pump is installed at the top end of the
sewage treatment tank. According to the technical scheme, the filter screen device is hung at the round hole of the reduction furnace body, impurities in return water circulating into the reduction furnace body can be filtered, the
circulating pump can be prevented from being blocked by the impurities in the recycling process, the service life of the
circulating pump is prolonged, frequent maintenance of the circulating pump is avoided, and the device is convenient and practical.