Application of rotary vane vacuum pump in waste battery recycling
1. Low temperature roasting of rotary vane vacuum pump During the heating process of waste dry battery, moisture, paraffin, NH4Cl and other substances will be continuously evaporated, and organic substances such as paper and paste can be ashed; Elemental zinc begins to melt and can be recovered for use.
2. The rotary vane vacuum pump chlorination roasting waste dry battery is roasted at low temperature, during which moisture, organic matter, NH4Cl, etc. have been fundamentally removed. Metal chloride has the characteristics of low melting point, good volatility, and easy solubility in water, which is convenient for recycling. It greatly saves power and reduces the disposal cost of waste dry batteries.