A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for preparing magnesium oxide for high-performance silicon steel through dolomite
The invention relates to the field of orientation silicon steel manufacturing, in particular to a method for preparing magnesium oxide for high-performance silicon steel through dolomite. The problems that in the existing orientation silicon steel manufacturing process, magnesium oxide for silicon steel is prepared through a bittern method, adhesiveness is poor, the magnetic flux density is low, insulation film bottom layer concession is high are solved. The method comprises the steps that firstly, dolomite is roasted, subjected to chemical combination with water and then carbonized in a carbonizing tower; secondly, solid calcium carbonate and a magnesium bicarbonate aqueous solution are filtered and separated, the obtained magnesium bicarbonate aqueous solution is pyrolyzed and filtered, magnesium carbonate is obtained, then subjected to multi-step calcination, smashed through air flow and packaged, and magnesium oxide for the high-performance silicon steel is obtained. According to the method, the production process is unique, cost is low, three wastes are not generated, the adhesiveness, electromagnetic performance and grade rate of the orientation silicon steel can be remarkably improved, and the method can be applied and popularized in orientation silicon steel factories on a large scale.
Method for preparing magnesium oxide for high-performance silicon steel through dolomite
The invention relates to the field of orientation silicon steel manufacturing, in particular to a method for preparing magnesium oxide for high-performance silicon steel through dolomite. The problems that in the existing orientation silicon steel manufacturing process, magnesium oxide for silicon steel is prepared through a bittern method, adhesiveness is poor, the magnetic flux density is low, insulation film bottom layer concession is high are solved. The method comprises the steps that firstly, dolomite is roasted, subjected to chemical combination with water and then carbonized in a carbonizing tower; secondly, solid calcium carbonate and a magnesium bicarbonate aqueous solution are filtered and separated, the obtained magnesium bicarbonate aqueous solution is pyrolyzed and filtered, magnesium carbonate is obtained, then subjected to multi-step calcination, smashed through air flow and packaged, and magnesium oxide for the high-performance silicon steel is obtained. According to the method, the production process is unique, cost is low, three wastes are not generated, the adhesiveness, electromagnetic performance and grade rate of the orientation silicon steel can be remarkably improved, and the method can be applied and popularized in orientation silicon steel factories on a large scale.
Method for preparing magnesium oxide for high-performance silicon steel through dolomite
BAI FENG (author) / ZHANG ZHONGHUI (author) / YU JIANQIANG (author) / GUO YI (author)
2016-01-27
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2022
Method for preparing magnesium oxide raw material from dolomite ore
| European Patent Office | 2024
Method For Producing High Purity Magnesium Oxide From Dolomite Using Sucrose
| European Patent Office | 2025
Process for preparing magnesium from dolomite by vacuum aluminothermic reduction
| British Library Online Contents | 2010
Method for preparing magnesium hydroxide and calcium hydroxide flame retardant from dolomite
| European Patent Office | 2021