Preparation and expansion of perlite ore fines

Details Preparation and expansion of perlite ore fines Preparation and expansion of perlite ore fines

1982-02-05

1985-12-10

Czaja, Donald

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

264 63, 264117, B29H 720

Patent

active

045578834

ABSTRACT:
A process is described for the preparation of perlite ore fines for expansion. The ore fines are treated with an agglomerating agent which has a viscous liquid phase at a temperature above ambient temperature but below the critical dehydration temperature of the perlite ore fines. Suitable agglomerating agents mentioned are the boron acids, particularly orthoboric acid and metaboric acid. The perlite ore fines and agglomerating agent are mixed, preferably by dry mixing, and then heated to the temperature of the viscous liquid phase and held at that temperature for a short period while the liquid coats at least a portion of the perlite ore fines and effects agglomeration. Thereafter, the agglomerated perlite ore fines can be expanded in a conventional perlite ore expander. The resulting expanded materials have properties essentially identical to standard expanded perlite ore and are useful for such purposes as insulating fillers and light weight aggregates.

REFERENCES:
patent: 4148941 (1979-04-01), Pope
patent: 4175158 (1979-11-01), Saunders

Affiliated with

Also associated with

Rating

Preparation and expansion of perlite ore fines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation and expansion of perlite ore fines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation and expansion of perlite ore fines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-58073