中文版
Industy information
People in order to synthesize large crystals of pure mica , mica always want to melt crystallization from start to finish this whole process only precipitate a crystalline phase . But the truth is far from it , because the melt crystallization behavior of its composition, the heating process , the size and shape of the container as well as the synthesis of other factors. Noda Japanese scholars findings indicate Inayoshi melt fluorphlogopite theoretical component is initially precipitates magnesium olivine , with lower melt temperature , forsterite again dissolved into the melt , and then precipitated mica crystals. The results of this study concluded with the United States Bureau of Mines Hatch , who is the same . The excess , if any, exist in the melt MgF2 , it is not the beginning of the forsterite crystal phase , but the mica. Since then, Noda et al Inayoshi further study the effects of heat on the melt crystallization process behavior . That the melt can cause excessive heating of the melt , such as severe cold , then the precipitated crystals are almost all particulate attapulgite , but the sample was again placed under a relatively low temperature (1250 ℃) for 2h , the particulate attapulgite Stone showed a decreasing trend , and re- precipitation of mica crystals. They think will happen then melt the following reaction :
2KMg3 AISi3 010 F2 - '2 KAISi2 06 +2 (Mg2.Si04.MgF2)
Thus, the cooling rate of the melt can not be too fast, otherwise it will lead to the formation of large olivine crystals or grains humite . They also confirmed that the fluorine content of the melt in a little excess mica crystallization is advantageous.
New Products
Video
About Us
Located in the beautiful Huadu District in Guangzhou City, Guangzhou Yortay Fine Chemicals Co., Ltd. is a pearlescent pigment supplier with R&D, production, sale and sevice all together. After years of efforts, the products have been sold to more than 50 countries and regions in the world. With excellent pearl pigments and services, Yortay has been serving the global coatings, inks, plastics, printing, leather, art crafts, cosmetics, building materials, printing and dyeing industries with great satisfaction.
- More>>>
Contact Us
Yortay Fine Chemicals Co., Ltd.
Tel：86.20.66356416-808
Fax：86.20.62934969-808
Email：colors@yortay.com
PayPal : gzyortay@tom.com
Other contact：
Leave us a message