The second kind of iron, aluminum, magnesium, carbon pow and salt: that iron, aluminum and magnesium powder react with water as the negative electrode of the battery, the carbon powder as the positive electrode of the battery, the salt dissolved in wat as the electrolyte solution, and air participates in the reaction, releasing a large amount of heat to heat the object. The temperature can reach 150℃ and the steam temperature can reach 200℃.
When heating, the outside of the lunch box will be kept at a high temperature. Do not touch it with your hands or put it on the glass products, because the lunch box is very hot after heating, which may easily cause the glass surface to burst. If it's a wooden table, it's easy to leave some marks and traces on the desktop. Destroy the essence of the table and affect the appearance.
The third kind of superimposed lime powder: lime powder is added on the basis of the second kind. This heating reaction will be more intense and produce a lot of gas.
First, open the outer packaging of the lunch box, put the heating bag into the box, then put the food and seasoning into another lunch box, add cold water to the box where the heating bag is located, put the food box on the heating bag, cover it and wait for about 10 minutes, and the food is finished. Remember, you can't heat the water here, which will lead to high temperature, and the water will boil violently, which is very dangerous. Please follow the steps strictly.