RU2044573C1 SU5059307A RU2044573C1 RU 2044573 C1 RU2044573 C1 RU 2044573C1 SU 5059307 A SU5059307 A SU 5059307A RU 2044573 C1 RU2044573 C1 RU 2044573C1 Authority RU Russia Prior art keywords gold flotation silver cmc conditioning Prior art date Application number Other languages English (en) Inventor