Electrolytic method for smelting metal

Potassium, white card, sodium, magnesium, aluminum

The principle of preparing metal powder by electrolytic method is: applying direct current in electrolyte solution produces migration of positive and negative ions, positive ions move to cathode, negative ions move to anode, anode undergoes oxidation reaction, cathode undergoes reduction reaction, and metal positive ions in electrolyte solution are reduced at cathode and deposited on cathode plate.

This is the basic process of electrolysis. Therefore, electrolysis is a process of realizing chemical reaction with the help of current, and it is also a process of transforming electric energy into chemical energy.

Extended data

The use of electrolysis—

Electrolytic melting of sodium chloride produces metallic sodium and chlorine; Electrolysis of sodium chloride aqueous solution produces sodium hydroxide and chlorine. Electrolyzing water produces hydrogen and oxygen. Electrolyzing water is to decompose water into H2(g) and O2 (g) under the action of external electric field. Molten fluoride can be oxidized to elemental fluorine on the anode, and molten lithium salt can be reduced to metallic lithium on the cathode.

Many nonferrous metals (such as sodium, potassium, magnesium, aluminum, etc. ) and rare metals such as zirconium and hafnium. ) refining, basic chemical products (such as hydrogen, oxygen, caustic soda, potassium chlorate, hydrogen peroxide, ethylene dinitrile, etc. ) and electroplating, electropolishing and anodizing.