In industrial material storage, low-temperature environments are often mistakenly considered “natural dry warehouses,” leading many to believe that low temperatures suppress moisture and eliminate the need for additional moisture protection for materials like refractory bricks.
However, the reality is quite the opposite. Low-temperature environments have higher relative humidity, easily leading to condensation. Neglecting moisture protection for refractory bricks and other types of bricks will severely impact their performance.
This article will explain in detail the necessity of moisture protection for refractory bricks stored at low temperatures, and compare it with the storage requirements for other types of bricks.
Storing Refractory Bricks at Low Temperatures: Moisture Protection is Key
1. The Combined Harm of Low Temperature and Humidity
The air saturation is lower at low temperatures, allowing even small amounts of water vapor to reach a high humidity level, easily forming condensation on the surface of refractory bricks.
Refractory brick raw materials contain clay, high-alumina, and other components. These components undergo physical changes upon absorbing water. For example, when high-alumina bricks absorb moisture, the low temperature causes the water to freeze inside the brick. After thawing, surface cracking and flaking easily occur, directly reducing compressive strength and refractoriness.
For basic refractory bricks such as magnesia, moisture can trigger a chemical reaction, producing magnesium hydroxide, which damages the brick structure and renders it unusable.
2. Key Standards for Moisture Prevention
According to industry standards, when storing refractory bricks at low temperatures. The relative humidity in the warehouse must be controlled below 75%, and for basic refractory bricks, it must be strictly controlled below 50%. Moisture-proof packaging and sealing are necessary during storage, along with mechanical ventilation equipment. Ensuring at least two air exchanges per hour, and preventing the bricks from directly contacting the ground and becoming damp.
Differences in Moisture Prevention for Other Brick Types During Low-Temperature Storage
1. Clay Bricks: Moisture Prevention and Ventilation Considerations
Clay bricks, as traditional building bricks, have strong resistance to hydration, but long-term exposure to low temperatures and moisture can still lead to moss growth and decreased strength.
The storage environment must be kept dry and well-ventilated, with humidity controlled below 75%. Avoid piling them in dark, damp corners. If they accidentally become damp, allow them to air dry naturally at room temperature; do not bake them directly to prevent cracking.
2. Magnesia Bricks: Strictest Moisture Control Requirements
As a representative of alkaline refractory bricks, magnesia bricks have extremely poor moisture resistance, making moisture control the top priority in low-temperature environments. Besides controlling humidity below 50%, they must be completely covered with waterproof tarpaulins and stored separately in a sealed, dry warehouse, avoiding mixing with other damp materials.
Once they become damp and deteriorate, they cannot be repaired by drying and must be scrapped.
Professional Guarantee, Protecting Your Brick Storage
Low-temperature environments are not a “safe haven” for brick storage. Even slight negligence in moisture control can lead to irreparable damage. Whether it’s the professional storage of refractory bricks or the moisture control and maintenance of other types of bricks, a scientific plan and meticulous management are essential.
If you are struggling with moisture control issues in low-temperature brick storage and are looking for a customized solution, contact us immediately! Our professional team has many years of industry experience and can accurately solve various brick storage problems! Feel free to contact us anytime!