Process for manufacturing raw anode

Abstract

The invention discloses a technique for preparing a green anode, comprising the steps as follows: firstly, green scraps are crushed to a certain granularity which is generally more than the maximum composition granularity of the green scraps; the crushed green scraps are measured and added in a pre-heating procedure; in the pre-heating procedure, the green scraps are mixed with petroleum coke particle material, powder material, residual electrode and baked scraps which are measured; after sufficiently pre-heated and mixed to a certain temperature, the materials are discharged to a kneading procedure where asphalt is added; and the asphalt and the materials are kneaded at a certain temperature and discharged in a paste and cooled, thus obtaining the green anode product by forming treatment. The process changes the adding point of the green scraps from kneading procedure into the pre-heating procedure; furthermore, the granularity of the added green scraps is greater, thus solving the problem that the green scraps are added after being crushed to be too fine in the prior art; and the granularity composition of the crushed green scraps is not changed and the physical property thereof is the same with the original property, thus effectively ensuring the quality of the green anode product.

Description

technical field [0001] The invention relates to a manufacturing process of a raw anode. Background technique [0002] Green anode manufacturing is an important part in the production of prebaked anodes in aluminum electrolysis production systems. Generally, various materials such as petroleum coke particles, powder materials, anode residues, roasted crushed, raw crushed, and asphalt are used as raw materials, and raw anodes are produced through batching, preheating, kneading, paste cooling, and molding. In the current production process, petroleum coke particles, powder materials, residual electrodes, and roasted chips are measured and preheated, and then enter the kneading process; after asphalt is measured, it is generally mixed with dry materials in the kneading process; raw materials containing asphalt After the crushing is measured, it is generally added in the kneading process. After kneading at a certain temperature, the material is discharged into the paste cooler ...

AI Technical Summary

Problems solved by technology

This process does not need to crush the raw material too finely, and will not change the physical properties of the raw material, so as to solve the problem of adding the raw material after it is too finely crushed, so as to improve the product quality of the raw anode

Images