Invention Grant
- Patent Title: Process and system for dry recovery of fine and superfine grained particles of oxidized iron ore and a magnetic separation unit
- Patent Title (中): 用于干燥回收氧化铁矿石和磁选机的精细和超细颗粒的工艺和系统
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Application No.: US14386574Application Date: 2013-03-13
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Publication No.: US09327292B2Publication Date: 2016-05-03
- Inventor: Mauro Fumyo Yamamoto
- Applicant: New Steel Soluções Sustentaveis S.A.
- Applicant Address: BR Rio de Janeiro
- Assignee: New Steel Soluções Sustentaveis S.A.
- Current Assignee: New Steel Soluções Sustentaveis S.A.
- Current Assignee Address: BR Rio de Janeiro
- Agency: Brinks Gilson & Lione
- Priority: BR102012008340 20120319
- International Application: PCT/BR2013/000075 WO 20130313
- International Announcement: WO2013/138889 WO 20130926
- Main IPC: B03C1/30
- IPC: B03C1/30 ; B03C1/10 ; B03C1/247 ; B04C9/00 ; B03B9/00
Abstract:
The present invention refers to a system and method for the totally dry treatment of iron-ore wastes from previous mining operations, suitable for both the processing of ore wastes deposited in barrages and wastes stored in piles. The present invention solves the problems of magnetic separation processes that employ the wet and waste-dewatering way, eliminating the risks which throwing solid wastes into retention barrages bring by a system and method wherein the moisture degree of the ore is reduced by means of a mechanical stir dryer (using natural gas to prevent contamination), which is then sorted into various factions and finally separated magnetically, with the important difference of being an entirely dry process.
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