Why can't molten aluminum touch water?
Release time:
2024-02-22
Molten aluminum is a highly active and highly reactive substance, which exhibits a liquid state at high temperatures, with extremely high fluidity and unique physical and chemical properties. Because of these characteristics, once the molten aluminum is in contact with water, a serious reaction will occur, resulting in adverse consequences.
First of all, we know that water is the composition of H₂ O, and when it comes into contact with molten aluminum, it will undergo a strong chemical reaction. Under high temperature conditions, the aluminum in the aluminum liquid will quickly react with water to produce hydrogen. The generation of hydrogen will form a large number of bubbles locally, resulting in violent churning and splashing of the aluminum liquid. This may not only lead to the loss of liquid aluminum, but also cause burns or other safety accidents.
Second, water in contact with molten aluminum may also cause high temperature heat conduction problems. Water has good thermal conductivity. When it comes into contact with high-temperature molten aluminum, it will quickly absorb a large amount of heat, resulting in a sharp drop in local temperature. This rapid temperature change may lead to uneven distribution of components in the aluminum liquid, affecting the quality of aluminum. At the same time, this thermal shock may also cause equipment damage or safety hazards during operation.
In addition, molten aluminum itself has a high activity, easy to react with oxygen in the air, the formation of alumina. When the water in the aluminum liquid evaporates, the remaining aluminum oxide may form impurity particles, which will seriously affect the purity and quality of the aluminum material. This is unacceptable for industrial applications that require high purity aluminum.
To sum up, the main reason why molten aluminum cannot contact water is that the contact between water and molten aluminum will cause serious chemical reactions, produce hydrogen and other adverse consequences; at the same time, the high thermal conductivity of water will lead to sharp changes in local temperature, affecting the quality of aluminum and the normal operation of equipment; in addition, water may also introduce impurity particles, affecting the purity of aluminum. Therefore, during the treatment of molten aluminum, the operating procedures and safety guidelines must be strictly observed to ensure the complete isolation of water and the normal operation of equipment.
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