Robert John Schreiber
Engineers in Ashland, MO

License number
Utah 5104903-2202
Issued Date
Apr 12, 2002
Expiration Date
Mar 31, 2017
Category
Engineer/Land Surveyor
Type
Professional Engineer
Address
Address
Ashland, MO
Education
UNIVERSITY OF MISSOURI - COLUMBIA, May 16, 1972
LicenseFiles verified this license of Dec 6, 2016 at the Utah Division of Occupational and Professional Licensing.

Professional information

Robert Schreiber Photo 1

Method For Recycle And Use Of Contaminated Soil And Sludge

US Patent:
4921538, May 1, 1990
Filed:
Jun 16, 1988
Appl. No.:
7/207637
Inventors:
Fred A. Lafser - St. Louis MO
Robert J. Schreiber - Ashland MO
Assignee:
Industrial Waste Management, Inc. - St. Louis MO
International Classification:
C04B 702
US Classification:
106100
Abstract:
Process for recycle and reuse of soil, sludge, sand, or rock containing: (a) at least about 16 wt % calcium oxide, about 5 wt % silica, about 1 wt % alumina, about 0. 5 wt % Fe. sub. 2 O. sub. 3, or about 0. 76 wt % magnesia; and (b) at least about 5 ppm arsenic, about 100 ppm barium, about 1 ppm cadmium, about 5 ppm chromium, about 5 ppm lead, about 0. 2 ppm mercury, about 1 ppm selenium, or about 5 ppm silver. The process comprising mixing the soil, sludge, sand, or rock with an amount of inorganic constituents to form a raw material mix having a chemical composition suitable for the manufacture of Portland cement, charging the slurry to a cement kiln, heating the slurry in the kiln to a temperature sufficient to form a cement clinker, and removing the cement clinker from the rotary kiln.