Process of preparing sinter magnesia

US4362709A · kind A · utility

Assignee

• Veitscher Magnesitwerke-Actien-Gesellschaft · AT

Inventors

• Helmut Grohmann · Leoben, AT
• Peter Stadler · Haan, DE

Key dates

• Filing date: Nov 2, 1981
• Grant date: Dec 7, 1982
• Expiry date: Nov 2, 2001

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D47/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a process of preparing sinter magnesia from magnesium oxide in a sintering kiln evolving flue gases during sintering, the flue gases are washed before their removal from the kiln to the atmosphere with a portion of the magnesium chloride slurry formed during the preparation of the magnesium oxide and the magnesium chloride slurry used for washing the flue gases is recycled to the slurry wherefrom the magnesium sol for making the magnesium oxide is derived.