Basic process of producing basic fluxed pellets for iron-making
US4326887A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Dec 3, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A new fluxed pellet for use in iron-making is obtained by mixing and indurating about 1 to about 20%, by weight of the pellet, of ground melt shop slag fines with similarly ground iron ore concentrate, so as to achieve particular ranges of silica content, CaO/SiO.sub.2 ratio, and MgO content. The melt shop slag fines have been considered a waste material, but contain significant slag and metal values. The slag is already in calcined form for an energy saving as compared to the use of limestone and dolomite, and is already somewhat divided for a saving in grinding energy. The resultant basic pellets have better furnace properties than the acid pellet produced without slag addition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.