Invention Grant
- Patent Title: Pre-treatment for conventional cyanidation for silver recovering from manganese-argentiferous ores containing occluded silver
- Patent Title (中): 常规氰化处理用于从含有闭塞银的含锰矿石中回收银
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Application No.: US14242199Application Date: 2014-04-01
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Publication No.: US09410224B2Publication Date: 2016-08-09
- Inventor: Pedro Castillo Castillo , Erasmo Orrantia Borunda
- Applicant: Centro de Investigacion en Materiales Avanzados, S.C.
- Applicant Address: MX Chihuahua
- Assignee: Centro de Investigacion en Materiales Avanzados, S.C.
- Current Assignee: Centro de Investigacion en Materiales Avanzados, S.C.
- Current Assignee Address: MX Chihuahua
- Agency: Defillo & Associates, Inc.
- Agent Evelyn A. Defilló
- Priority: MXMX/a/2013/015102 20131218
- Main IPC: C22B11/00
- IPC: C22B11/00 ; C22B3/00 ; C22B11/08 ; C22B47/00
Abstract:
The present invention discloses a treatment for recovering silver from ores containing occluded silver, predominantly pyrolusite, which includes a pre-treatment of the manganese-argentiferous ore with sulfur dioxide produced by roasting elemental sulfur, generating manganese sulphate, and pregnant solution with more than 90% silver recovery.
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