Process for overhauling of calcining furnace and starting of baking oven

Abstract

A process for overhauling of a calcining furnace and starting of a baking oven relates to the production industry of carbon anodes for aluminum electrolysis and is characterized by including steps: 1) stopping the calcining furnace; 2) determining components required to be detached and changed in advance and detaching the calcining furnace in a protecting manner; 3) repairing the old components and recovering waste components; 4) improving the furnace structure and the building method thereof; and 5) starting up an assorted baking oven quickly. Compared with the prior art, the process for overhauling of the calcining furnace and starting of the baking oven has the advantages that overhauling cost of the calcining furnace is reduced greatly, overhauling period thereof is short, and the process is simple and feasible, low in input but high in effect and capable of prolonging the service life of the calcining furnace effectively.

Description

technical field [0001] The invention discloses a method for overhauling a calciner and putting the oven into production, and relates to the field of carbon anode production for aluminum electrolysis. Background technique [0002] The design capacity of the 24-can downstream eight-layer fire path calciner used in the production of carbon anodes for aluminum electrolysis is 80 kg per can, and the service life is generally eight years. The calciner has a large investment, low output, and a long payback period, which reduces The cost of the anode is very unfavorable; there is already a set of process technology control and operation methods matching the breakthrough design capacity, but after the service life of about 10 years expires, all griddle furnaces need to be overhauled. The overhaul of a 24-can down-flow eight-layer fire channel calciner will result in high static investment costs, which are almost equivalent to the cost of a new calciner. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] The design capacity of the 24-can downstream eight-layer fire path calciner used in the production of carbon anodes for aluminum electrolysis is 80 kg per can, and the service life is generally eight years. The calciner has a large investment, low output, and a long payback period, which reduces The cost of the anode is very unfavorable; there is already a set of process technology control and operation methods matching the breakthrough design capacity, but after the service life of about 10 years expires, all griddle furnaces need to be overhauled

The overhaul of a 24-can down-flow eight-layer fire channel calciner will result in high static investment costs, which are almost equivalent to the cost of a new calciner