according to the characteristics of carbonaceous slate type gold ore suitable grinding particle size is determined new selective frother 730a dispersing agent and activating agent are used
根据碳质板岩型金矿的特点，确定了适宜的磨矿粒度，选用了新型选择性起泡剂730a分散剂和活化剂
以上为机器翻译结果，长、整句建议使用 人工翻译 。