A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Magnesium oxide for oriented silicon steel annealing separant, and preparation method
The invention discloses magnesium oxide for an oriented silicon steel annealing separant, and a preparation method thereof. The magnesium oxide is prepared by mixing high-activity magnesium oxide andlow-activity magnesium oxide, wherein the mass percent of the low-activity magnesium oxide in the total amount is 5-40%, the high-activity magnesium oxide is prepared from bittern, ore and the like asraw materials through processes of chemical precipitation, water washing and the like, and the low-activity magnesium oxide is prepared from the following steps: calcining waste silicon steel magnesium oxide in air or oxygen atmosphere to oxidize low-valence titanium into tetravalent titanium so as to obtain white powder, and then screening the obtained white powder or smashing to remove coarse particles to obtain the high-activity magnesium oxide. According to the invention, the magnesium oxide is excellent in surface and magnetic properties, the prepared slurry can enable the bottom layer of the surface of a steel coil to obtain good appearance quality, uniformity, plate shape and the like, the preparation method is economical and practical, zero waste discharge is achieved, and the problem of environmental and ecological pollution caused by a large amount of silicon steel magnesium oxide waste in the silicon steel production process can be solved.
本发明公开了一种取向硅钢退火隔离剂用氧化镁及制备方法，所述氧化镁由高活性氧化镁和低活性氧化镁混合配制成，低活性氧化镁的占总量的质量百分数为5～40％，高活性氧化镁以盐卤、矿石等为原料，经过化学沉淀、水洗等工序制得，低活性氧化镁采用废弃硅钢氧化镁制备，在空气或者氧气气氛中煅烧，将低价钛氧化成四价钛得到白色粉末，再将得到的白色粉末筛分或者粉碎除去粗粒子获得。本发明的氧化镁表面和磁性能优良，制得的浆料能够使钢卷的表面底层获得较好的外观质量、均匀性和板型等，制备方法经济实用、零排废，能够解决硅钢生产过程大量硅钢氧化镁废弃物造成的环境和生态污染问题。
Magnesium oxide for oriented silicon steel annealing separant, and preparation method
The invention discloses magnesium oxide for an oriented silicon steel annealing separant, and a preparation method thereof. The magnesium oxide is prepared by mixing high-activity magnesium oxide andlow-activity magnesium oxide, wherein the mass percent of the low-activity magnesium oxide in the total amount is 5-40%, the high-activity magnesium oxide is prepared from bittern, ore and the like asraw materials through processes of chemical precipitation, water washing and the like, and the low-activity magnesium oxide is prepared from the following steps: calcining waste silicon steel magnesium oxide in air or oxygen atmosphere to oxidize low-valence titanium into tetravalent titanium so as to obtain white powder, and then screening the obtained white powder or smashing to remove coarse particles to obtain the high-activity magnesium oxide. According to the invention, the magnesium oxide is excellent in surface and magnetic properties, the prepared slurry can enable the bottom layer of the surface of a steel coil to obtain good appearance quality, uniformity, plate shape and the like, the preparation method is economical and practical, zero waste discharge is achieved, and the problem of environmental and ecological pollution caused by a large amount of silicon steel magnesium oxide waste in the silicon steel production process can be solved.
本发明公开了一种取向硅钢退火隔离剂用氧化镁及制备方法，所述氧化镁由高活性氧化镁和低活性氧化镁混合配制成，低活性氧化镁的占总量的质量百分数为5～40％，高活性氧化镁以盐卤、矿石等为原料，经过化学沉淀、水洗等工序制得，低活性氧化镁采用废弃硅钢氧化镁制备，在空气或者氧气气氛中煅烧，将低价钛氧化成四价钛得到白色粉末，再将得到的白色粉末筛分或者粉碎除去粗粒子获得。本发明的氧化镁表面和磁性能优良，制得的浆料能够使钢卷的表面底层获得较好的外观质量、均匀性和板型等，制备方法经济实用、零排废，能够解决硅钢生产过程大量硅钢氧化镁废弃物造成的环境和生态污染问题。
Magnesium oxide for oriented silicon steel annealing separant, and preparation method
一种取向硅钢退火隔离剂用氧化镁及制备方法
YANG LIANLONG (author) / YANG GANG (author) / LIU YUE (author)
2020-05-22
Patent
Electronic Resource
Chinese
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME
/
C21D
Veränderung der physikalischen Struktur von Eisenmetallen
,
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
| European Patent Office | 2024
Preparation method of special titanium-containing magnesium oxide for oriented silicon steel
| European Patent Office | 2024
Formwork surface clearing and separant applying device and using method thereof
| European Patent Office | 2021