Pure water in nature will freeze at 0℃ under normal atmospheric pressure. If water contains impurities, the freezing point of water will drop. The melting point of ice is the freezing point of water. With the increase of atmospheric pressure, the melting point of ice also increases.
Naturally formed ice is called natural ice, and ice usually made by artificial refrigeration is called artificial ice, machine-made ice or industrial ice, among which there are many kinds of artificial ice, and the commonly used ice is industrial ice, edible ice and dry ice.
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classify
1. industrial ice: industrial ice is also called ice, ice bars, ice bricks, etc. Ice is frozen with pure tap water, and the temperature is about MINUS 20 degrees. Ice cubes are widely used in seafood, catering, hygiene, industry and food.
2. Edible ice: 20 kilograms of edible ice per bag (edible). Sanitary edible ice particles are made by freezing sterilized edible water at MINUS 20 degrees, which can be used for eating, freezing, preparing drinks, mixing wine in hotels and so on. Drinks are cold, so wine and drinks are cold, refreshing, delicious, economical, applicable and delicious.
3. Transparent ice: also known as crystal ice and clear ice, transparent ice can be used for scenery, artistic sculpture, decoration, celebration ice sculpture, wedding ice sculpture, reception ice sculpture, wine injection ice sculpture, business meeting ice sculpture, Chinese and English font ice sculpture and theme modeling ice sculpture.