On this basis, soda roasting followed by causticsoda leaching are studied systemically in order to recover gallium and germanium from ferrous powder reduced from zinc-leaching residues.
对钠化焙烧—碱浸法从浸锌渣还原铁粉中提取镓锗进行了系统研究。
2
Soybean fiber intolerance due to causticsoda concentration, it can only use natural soap for washing powder.