Local maintenance method for furnace bottom of flash furnace

Abstract

The invention discloses a local maintenance method for a furnace bottom of a flash furnace. The local maintenance method comprises the following steps that S1, a supporting frame is built; S2, supporting objects such as arch foot brick furnace wall shell steel plates, copper water jackets and steel beams in the area needing to be replaced are directly dismantled to the positions below arch foot bricks; S3, refractory bricks on the furnace wall above the area are dismantled; S4, the damaged arch foot bricks are dismantled; S5, slag with the free face is dismantled; and S6, the arch foot bricks are replaced. The refractory bricks, the arch foot bricks and the slag are dismantled through a dismantling device, the dismantling device comprises a dismantling mechanism and a collecting mechanism, and the dismantling mechanism is installed on the collecting mechanism. The maintenance method is efficient, economical and scientific, the effect of safe operation can be achieved by locally dismantling and replacing the arch foot bricks needing to be maintained instead of completely dismantling and rebuilding the arch foot bricks during cold repair of the flash furnace, and the maintenance cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal metallurgical furnaces, in particular to a partial maintenance method for the bottom of a flash furnace. Background technique [0002] Generally, during the production process of the flash furnace, when the copper water jacket and the water-cooling element above the furnace wall leak water, the water penetrates from above along the furnace wall to the arch bricks of the furnace bottom, causing powdering and deformation of the arch bricks at the bottom of the furnace, which is refractory. The original structure is changed after brick pulverization, which affects the normal production. Referring to the maintenance cases of flash furnace repair at home and abroad, the usual practice is to remove all the furnace bottom bricks and bottom slagging, and then replace them with new bricks, so as to achieve the health of the equipment. This method is not only time-consuming and labor-intensive, b...

AI Technical Summary

Problems solved by technology

This method is not only time-consuming and labor-intensive, but also costly

Judging from the previous cold repairs of the flash furnace, after each shutdown of the flash furnace, thick slag formed in the arch foot brick area, up to 1 meter thick, and the slag contained many kinds of metals. It is very difficult to remove all the bottom

Images