Corrosion : What It Is and How To Control It
Hi everyone! We are back again with another article about one of refractory failures.
Previously, our article is about refractory failure by spalling, which you can read here.
This time, we will discuss about corrosion which is the loss of mass of refractory material lining.
What caused it? How to prevent it? Scroll down and find out more!
What is corrosion?
Corrosion is the loss of refractory mass caused by chemical reactions between contacting materials.
Materials that come into contact with refractories can be solids, liquids or gases.
Corrosion can occur through four processes, namely dissolution, reaction, and penetration of chemical substances into the pores.
How to control corrosion process?
In general, the corrosion process can be prevented with the following steps:
- Reduces chemical reactivity and increases specific area. Because the finer the granules, the more reactive they are, so the substance dissolves more quickly into the melt.
- Set the composition of the filer and matrix.
- Reducing the dissolution rate by reducing the interface and melt concentration difference, avoiding stirring, and
lower the temperature.
- Regulate the suitability of the acidity level between the refractory and the slag.
- Controlling porosity and texture by:
1. Using wide range particle distribution to reduce interconnection between pores.
2. Improved mixing and molding techniques during production.
3. Adding ingredients that allow pore closure.
- Controling the penetration process with
increases viscosity and covers pores.
- Controlling dissolution by regulating chemical reactivity and specific area, and lowering temperature.
- Controlling oxidation - reduction reactions by adjusting the composition/addition of oxidation preventers.
That was a brief explanation about corrosion of refractory linings and how to control it.
Get the best refractory solutions for your industry now by contacting:
Telephone: 0821-4280-8500/031-7665507
E-mail: marketing@lokarefractories.com
Previously, our article is about refractory failure by spalling, which you can read here.
This time, we will discuss about corrosion which is the loss of mass of refractory material lining.
What caused it? How to prevent it? Scroll down and find out more!
What is corrosion?
Corrosion is the loss of refractory mass caused by chemical reactions between contacting materials.
Materials that come into contact with refractories can be solids, liquids or gases.
Corrosion can occur through four processes, namely dissolution, reaction, and penetration of chemical substances into the pores.
How to control corrosion process?
In general, the corrosion process can be prevented with the following steps:
- Reduces chemical reactivity and increases specific area. Because the finer the granules, the more reactive they are, so the substance dissolves more quickly into the melt.
- Set the composition of the filer and matrix.
- Reducing the dissolution rate by reducing the interface and melt concentration difference, avoiding stirring, and
lower the temperature.
- Regulate the suitability of the acidity level between the refractory and the slag.
- Controlling porosity and texture by:
1. Using wide range particle distribution to reduce interconnection between pores.
2. Improved mixing and molding techniques during production.
3. Adding ingredients that allow pore closure.
- Controling the penetration process with
increases viscosity and covers pores.
- Controlling dissolution by regulating chemical reactivity and specific area, and lowering temperature.
- Controlling oxidation - reduction reactions by adjusting the composition/addition of oxidation preventers.
That was a brief explanation about corrosion of refractory linings and how to control it.
Get the best refractory solutions for your industry now by contacting:
Telephone: 0821-4280-8500/031-7665507
E-mail: marketing@lokarefractories.com
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