Method for producing unsintered cristobalite particles

Details Method for producing unsintered cristobalite particles Method for producing unsintered cristobalite particles

1991-12-26

1992-10-13

Group, Karl

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423338, 501 4, 501 54, 501133, C01B 3312, C03C 306

Patent

active

051549050

ABSTRACT:
A method for producing a nonsintered cristobalite particles comprising heating amorphous silica particles at a temperature of 1400.degree. to 1700.degree. C. in the presence of cristobalite particles (hereinafter referred to as cristobalite particles for addition and mixing) of at least 5 parts by weight based on 100 parts by weight of said amorphous silica particles to convert said amorphous silica particles to cristobalite particles with their particle form kept unchanged. According to the present invention, dense cristobalite having a low alkali content can be obtained in the form of particles. Such cristobalite is used as a filler, a dispersing agent, etc., and also as a material for high-quality artificial quartz, ceramics, etc., and particularly as a material for transparent quartz glass because of its generating no bubbles at the time of melt-molding.

REFERENCES:
patent: 4683128 (1987-07-01), Orii et al.
patent: 4786017 (1988-11-01), Wegerhoff et al.
patent: 4826521 (1989-05-01), Wiechmann et al.
patent: 4853198 (1989-08-01), Orii et al.

Affiliated with

Also associated with

Rating

Method for producing unsintered cristobalite particles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing unsintered cristobalite particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing unsintered cristobalite particles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1298912