Richard Jerome Pierce

US Patent:

39610225, Jun 1, 1976

Filed:

Dec 12, 1974

Appl. No.:

5/533440

Inventors:

Richard H. Pierce - Broomall PA

Assignee:

Philadelphia Quartz Company - Valley Forge PA

International Classification:

B01D 1102
C01B 3332

US Classification:

423332

Abstract:

Solutions of soluble alkali metal silicates of exceptional clarity are prepared by dissolving anhydrous alkali metal silicate glass at atmospheric pressure by a novel process comprising the constant classification of alkali metal silicate glass particles according to size and the constant removal of the polymer-like silicate that forms as a semi-solid on the wetted glass surface. The constant classification of the silicate glass particles and removal of this polymeric silicate to yield nascent glass surfaces can be achieved by charging silicate glass particles to aqueous media in a vibrating or vibro energy mill and subjecting said particles to impacts of varying frequency and amplitude or by subjecting the solution and glass particles, during dissolution, to agitation of different intensity and duration in a vertically stacked series of dissolving chambers.

US Patent:

40423131, Aug 16, 1977

Filed:

Mar 19, 1976

Appl. No.:

5/668387

Inventors:

Richard H. Pierce - Broomall PA

Assignee:

Philadelphia Quartz Company - Valley Forge PA

International Classification:

C10L 1000
C06B 4300

US Classification:

431 4

Abstract:

An improved method of imparting colors to fires in home fireplaces is described as well as the preparation of the materials used to provide said color. Metal salts which impart color to flames are granulated using hydrated alkali metal silicate as a binder. When these granules are added to fires, the silicate binder softens on contact with warm or hot combustible material. The silicate then loses water and is transformed to a solid once more so that the material becomes bonded to the combustibles. Upon burning the metal salts are decomposed and the flames are colored. The system is very efficient and proper application requires the use of bulking agents in the granules.

US Patent:

39310361, Jan 6, 1976

Filed:

May 13, 1974

Appl. No.:

5/469149

Inventors:

Richard H. Pierce - Broomall PA

Assignee:

Philadelphia Quartz Company - Valley Forge PA

International Classification:

B01J 200
B01J 220
B01J 222
C11D 714

US Classification:

252135

Abstract:

This invention generally relates to the production of alkali metal silicates. More particularly the invention relates to the production of compressed alkali metal silicate granules of desirable density and particle properties.

US Patent:

41501004, Apr 17, 1979

Filed:

Jun 13, 1978

Appl. No.:

5/915327

Inventors:

Frederick R. Kettinger - Norristown PA
James A. Laudone - Easton PA
Richard H. Pierce - Broomall PA

Assignee:

PQ Corporation - Valley Forge PA

International Classification:

C01B 3328

US Classification:

423329

Abstract:

Zeolite NaA can be produced with a very short crystallization time, if an alumino-silicate gel of particular properties is prepared and heated at about 95. degree. C. The gel which is prepared by combining solutions of sodium aluminate and sodium silicate must contain a limited amount of water, be of a single phase and having a high viscosity. Gels of this nature can be heated for a fraction of an hour to yield essentially completely crystallized Zeolite NaA with no crystalline impurities.