Cypriot and Phoenician metalworkers produced 15 million tons of pyrometallurgical residues at the vast dumps of Riotinto.
塞浦路斯和腓尼基的金属工人在里奥图的大型废料场生产了1500万吨的焦化废渣。
The existing pyrometallurgical process to prepare metal niobium is complex, expensive, energy intensive and probably polluting.
现有的金属铌和铌基合金制备工艺复杂、成本高、能耗大、污染环境。
Use pyrometallurgical to reclaim scrapped lead-acid battery has the defact of high energy consumption and severe pollution. The reclaim rate is only over 80%.