Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iib metal
Patent
1996-06-27
1999-08-24
Bos, Steven
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iib metal
423109, 423622, 75724, 75725, 75753, 75766, 75961, C01G 900, B01D 1100, C21B 1500, C22B 1920
Patent
active
059421983
ABSTRACT:
The beneficiation of an electric arc furnace (EAF) dust waste stream comprising zinc compounds by collecting and combining dust from two or more EAF batches with coal fines to form briquettes, adding the briquettes to a final EAF batch with the charge, and collecting the dust from the final EAF batch, so that the zinc in the beneficiated dust is of a greater proportion than in a typical batch of EAF dust. Alternatively, the EAF dust can be split into two dust streams, one of which is returned to the EAF, while the other is treated in a hydrometallurgical process. Either waste stream preliminary can be treated by adding carbon and an ammonium chloride solution, separating any undissolved components from the solution, displacing undesired metal ions from the solution using zinc metal, treating the solution to remove therefrom zinc compounds, and further treating the zinc compounds and the undissolved components resulting in zinc products and an optional iron-carbon feedback. The purification process is used to further purify the zinc oxide to obtain zinc oxide which is at least 99.8% pure and has predeterminable purity and particle characteristics. The beneficiation process may be added to a complete chemical and metal values recovery process.
REFERENCES:
patent: 2105394 (1938-01-01), Allavena
patent: 2898191 (1959-08-01), Conn et al.
patent: 3770416 (1973-11-01), Goksel
patent: 3849121 (1974-11-01), Burrows
patent: 3850613 (1974-11-01), Allen
patent: 3911076 (1975-10-01), Probert et al.
patent: 4396424 (1983-08-01), Yatsunami et al.
patent: 4595574 (1986-06-01), Matsuoka et al.
patent: 4610722 (1986-09-01), Duyvesteyn et al.
patent: 4765829 (1988-08-01), Beckmann et al.
patent: 5208004 (1993-05-01), Meyerson et al.
patent: 5431713 (1995-07-01), Meyerson et al.
patent: 5453111 (1995-09-01), Meyerson et al.
patent: 5464596 (1995-11-01), Meyerson et al.
Myerson Allan S.
Robinson Peter
Bos Steven
Metals Recycling Technologies Corp.
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