Electric arc furnace dust recycling apparatus and method

摘要

The present technology provides an illustrative apparatus for recycle electric arc furnace (EAF) dust and method of use related to the same. The apparatus has a heat controlling region coupled to a separation volume and includes at least one magnet and a cooling region. The heating controlling region operates at a temperature sufficient to transform at least some of the EAF dust into a mixture of gaseous zinc and one or more additional metals. The magnet separates the iron-rich material from the mixture of gaseous zinc and one or more additional metals and the cooling region condenses the gaseous zinc.

主权项

1. A method for recycling electric arc furnace (EAF) dust material, the method comprising:
controlling a temperature of EAF dust material within a heat controlling region such that the temperature of the EAF dust material is sufficient to transform at least a portion of the EAF dust material into a mixture of gaseous zinc and one or more additional metals, wherein the one or more additional metals comprise iron-rich material and steel additives; separating the iron-rich material from the mixture of gaseous zinc and one or more additional metals within a separation unit; directing the gaseous zinc to a cooling region; and condensing the gaseous zinc within the cooling region, wherein condensing the gaseous zinc is performed after separating the iron-rich material, and wherein the condensing the gaseous zinc comprises condensing zinc oxide into different grades that fall out at different locations within the separation unit.