SYSTEM AND METHOD FOR RECOVERY OF VALUABLE CONSTITUENTS FROM STEEL-MAKING SLAG FINES

摘要

A system and method directed to the economical recovery of valuable iron constituents from iron blast furnace and steel-making slag fines wherein the slag is obtained and subjected to a series of classification steps which progressively sort the slag fines by various physical characteristics, including magnetism, size, and density, into relatively iron-rich and relatively iron-poor classifications, resulting in the isolation of iron-rich commercial byproduct at one or more of the classification steps.

主权项

1. A method for recovering iron-rich material from iron blast furnace and steel-making slag fines comprising performing the following steps in one or more iterations:
a) classifying a selected input batch of material based upon its magnetic properties into a magnetic material group and a non-magnetic material group; b) classifying a selected input batch of material based upon its size into a relatively larger particle size group and relatively smaller particle size group; and c) classifying a selected input batch of material based upon its density by introducing the material as a slurry into a hydraulic fluidized bed separator.