アジア・オセアニア研究教育機構(Q-AOS)ポスターセッション

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11.境諒太郎（工学府・修士課程）
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comment 2
難処理型炭素質金鉱石に対する改良型逐次的バイオ処理を用いた金回収率の向上

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Modified sequential bio-treatment of double refractory gold ore (DRGO) was developed to improve gold recovery. HCl washing was utilized after sulfide oxidation and before carbonaceous degradation. The maximum gold recovery was 85% in the sample after HCl washing and carbonaceous degradation but recovery was 64% in the sample after carbonaceous degradation without HCl washing. Although the difference of both sample was only HCl washing, HCl washing has significantly increased gold recovery. This is because HCl washing contributed to the removal of jarosite and effective carbonaceous degradation. Thus, treatments of DRGO should be modified by considering the ore’s own characteristics.

意見交換

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過去の意見交換

タイトル
The application of this method
コメント
How do you think about the application of your method can support the sustainable mining and also how is your method related to the development of more environmental friendly mining processing?
投稿者
Suyantara
投稿日
2021/10/18
タイトル
The application of this method
コメント
Thank you for your great comment, Mr. Suyantara. My answers are as follows. I think the application of our method can support the sustainable mining because double refractory gold ores (DRGO) are currently out of target for development due to their refractoriness. Our method may contribute to expanding the potential of development for DRGO. Also, our method is related to the development of more environmental friendly mining processing because we applied biological treatment for gold ores. Previously, the degradation of carbonaceous matter was conducted by roasting with releasing harmful gas but our method has two biological treatment with mild conditions. Thank you so much for your comment! Best regards.
投稿者
Ryotaro Sakai
投稿日
2021/10/20