Invention Grant
- Patent Title: Self-reducing, cold-bonded pellets
- Patent Title (中): 自还原,冷粘合颗粒
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Application No.: US10667883Application Date: 2003-09-23
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Publication No.: US07896963B2Publication Date: 2011-03-01
- Inventor: Hanqing Liu
- Applicant: Hanqing Liu
- Applicant Address: CN Beijing
- Assignee: Liu Hanqing
- Current Assignee: Liu Hanqing
- Current Assignee Address: CN Beijing
- Agency: Steptoe & Johnson LLP
- Main IPC: C04B7/36
- IPC: C04B7/36

Abstract:
Self-reducing, cold-bonded pellets and a method for their production for smelting a great variety of steels, including blast furnace iron-making, non-blast furnace iron-making, and all sorts of steelmaking in steel smelting furnaces, etc. The self-reducing, cold-bonded pellets comprise iron ore concentrate, carbonaceous reducing agent, and finely divided Portland cement clinker with special requirements as binder. The components are combined together to form a mixture. Pellets are produced when the mixture is placed into a balling disc or rotating drum and water is added. Pellets with predetermined size normally ranging from about 8-16 mm are obtained by using roller screens. The pellets are then continuously placed into a curing device. Inside the curing device, the pellets will then be hydrated and carbonated by using hot gases containing carbon dioxide with a temperature range of about 100-300° C. Thereafter, after drying, the dried pellets are discharged from the curing device and will be ready for use.
Public/Granted literature
- US20050061207A1 SELF-REDUCING, COLD-BONDED PELLETS Public/Granted day:2005-03-24
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