method for separating a metal-rich fraction from a slag composition, method and device for recovering one or more dragged metal values into a molten slag composition, method for recovering one or more metal by-products from a slag composition , method for separating metal values from a slag composition, method for separating entrapped platinum group metals in a slag composition

摘要

The present invention relates to a method for recovering metal values from a molten slag composition including atomizing the slag with an oxygen-containing gas in a gas atomization device to produce solid slag granules. Oxygen in the atomizing gas converts the metals into magnetic metal compounds, thus magnetizing the metal-containing slag granules. These metal-containing slag granules are then magnetically separated. Larger amounts of metals may be removed by passing the molten slag through a pre-settling pan with an adjustable base and / or atomization discontinuation where the metal content of the slag exceeds a predetermined amount. solid slag granules produced by atomization may be loaded into a recovery unit for recovery of one or more metal by-products. A device for recovering metal values from molten slag includes a gas atomizing device, a flow control device for controlling the atomizing gas flow, a control system and one or more sensors for detecting the values of the atomizing gas. metal in the slag.