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Cause Analysis of Wholesale carbon anode scrap For sale and Its Influence in Use

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  • Time of issue:2022-12-20
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(Summary description)Analysis of the causes of Wholesale carbon anode scrap For sale and the impact of its use in the process of anode baking, due to many factors, Wholesale carbon anode scrap For sale is inevitable. There are many types of Wholesale carbon anode scrap For sale, including cracks (longitudinal cracks, transverse cracks), bends, blanks, deformation, oxidation, delamination, internal cracks, impurities, collision damage, etc. Understanding the causes of various types of Wholesale carbon anode scrap For sale can improve the anode production quality with half the effort.

Cause Analysis of Wholesale carbon anode scrap For sale and Its Influence in Use

(Summary description)Analysis of the causes of Wholesale carbon anode scrap For sale and the impact of its use in the process of anode baking, due to many factors, Wholesale carbon anode scrap For sale is inevitable. There are many types of Wholesale carbon anode scrap For sale, including cracks (longitudinal cracks, transverse cracks), bends, blanks, deformation, oxidation, delamination, internal cracks, impurities, collision damage, etc. Understanding the causes of various types of Wholesale carbon anode scrap For sale can improve the anode production quality with half the effort.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2022-12-20
  • Views:0
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Analysis of the causes of Wholesale carbon anode scrap For sale and the impact of its use in the process of anode baking, due to many factors, Wholesale carbon anode scrap For sale is inevitable. There are many types of Wholesale carbon anode scrap For sale, including cracks (longitudinal cracks, transverse cracks), bends, blanks, deformation, oxidation, delamination, internal cracks, impurities, collision damage, etc. Understanding the causes of various types of Wholesale carbon anode scrap For sale can improve the anode production quality with half the effort.

1. Reasons for longitudinal crack of Wholesale carbon anode scrap For sale

The temperature rise curve is unreasonable, and the temperature rise speed is too fast (especially in the middle temperature stage), which causes the surface of the anode carbon block to be burned well, but the interior of the anode carbon block has not been burned well, making it difficult to discharge the volatile matter, and the expansion pressure generated is greater than the strength limit of the surface layer;

The anode carbon block is too close to the furnace wall when it is loaded, and the local temperature rise of the anode block near the furnace wall is too fast, causing premature sintering and uneven contraction of the entire anode;

When the raw anode is batched, the asphalt content is less and the powder is more. When the anode is heated and the volatile is discharged, the particles are not firmly bonded and the anti expansion ability is poor;

If the cooling speed is too fast, the external part will shrink, but the internal part will not shrink, resulting in relative expansion stress. The surface strength limit is lower than the expansion stress;

Local material leakage of the wall, heating too fast;

The upper, middle and lower anode carbon blocks of the ring type baking furnace are not matched properly, and the upper layer is loaded with large carbon blocks.

influence:

When Wholesale carbon anode scrap For sale with longitudinal cracks is used in aluminum electrolysis production, due to the effect of current, thermal shock and corrosion of electrolyte, it will lead to more slag falling, partial discharge, uneven distribution of anode current, and even longitudinal fracture or block falling.

2. Causes of transverse cracking of Wholesale carbon anode scrap For sale

When intermittent kneading is adopted, there are two pots of joint materials, which are not in good contact, and the joint is broken during baking;

When forming, the material temperature is too low, and the green billet is not vibrated or compacted;

The machine stops suddenly and vibrates again during vibration molding. Or the paste will be pulled off during the molding return, and then squeezed out. Although the surface of these anode carbon blocks is smooth, the internal structure has been uneven;

The degree of raw material calcination is not enough, and secondary shrinkage occurs during calcination, and the anode is easy to crack.

influence:

Transverse cracking of anode is the most taboo in aluminum electrolysis. Transverse cracking of anode will significantly increase anode resistance, resulting in uneven current distribution on the electrolytic cell, unstable operation of the electrolytic cell, and anode fracture will affect the normal production of electrolytic aluminum.

3. Reasons for bending of Wholesale carbon anode scrap For sale

The raw anode carbon block is not vertical;

The filling materials are unevenly placed or not solid;

The sizes and specifications are mixed, and the local force is uneven.

influence:

Different bending degree and direction of Wholesale carbon anode scrap For sale have different effects on electrolytic aluminum production. If it is bent longitudinally, it is easy to cause uneven anode current distribution and different anode consumption (the bottom of the same anode, but different pole distances). If the anode is bent horizontally, it will affect the operation of anode replacement.

4. Causes of Wholesale carbon anode scrap For sale deformation

The temperature of furnace chamber is too high during charging, and the time for placing filler is too long;

The filling materials are not evenly placed, and some parts are not filled;

The distance between anode carbon blocks is too small, and two or several anode blocks are bonded;

The furnace bottom leaks, causing local softening and deformation;

The anode carbon bowl has no filler or is filled with less;

The distance between anode carbon block and furnace wall is too small, causing deformation;

The asphalt content of raw anode carbon block is too high; The moisture content of filler is too high, exceeding the requirements;

The particle size of the filler is unqualified, and the local sintering is too fast at the contact between the anode carbon block and the large particles, resulting in bulge deformation.

influence:

Anode deformation occurs frequently in the process of baking the anode, and it is often mixed into the electrolytic production system, which will lead to uneven current distribution, long anode package, and even cell temperature rise, aluminum rolling, more carbon slag, different anode consumption, and unstable operation of the electrolytic cell.

In a word, in the baking process, once Wholesale carbon anode scrap For sale appears, it is necessary to find out the cause and remedy the problem in time, otherwise the waste mixed into aluminum electrolysis production will have a certain impact. In order to avoid the occurrence of Wholesale carbon anode scrap For sale as much as possible, the operator needs to summarize the causes of Wholesale carbon anode scrap For sale that can be visually judged.

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