| 摘要 |
The process consists in adding to the sulfate recovered from the plates of the worn-out batteries and to the bioxide obtained at the melting temperature a catalyst with a base of alkali metal carbonates (for example, marble sawdust) and potassium and aluminum silicates (for example, granite sawdust), obtaining absolutely lead-free ecological slags which can be used, when suitably treated, for example as waterproofing of grounds at the water-bearing strata. |
