How can I defrost it with pig iron?
With iron. The cast iron scraps water slowly after oxidation, the oxidation process of heating, the principle is to use warm baby. After the reaction of iron ions will amount into the water, thus changing the freezing point of water, which is equivalent to the salt melt the ice. Iron can thaw comes from the two the principle of superposition.
The thermal conductivity of iron, promote the ice temperature and ice water exchange outside = solid, it consists of H2O or O2 will contact the oxygen because of the iron oxidation longevity hot, so when it is exposed to the H2O, is also the time when water will be oxidized, because water is oxygen atoms, so, heat in order to make the ice melt
