|
Gypsum Rock for
Portland Cement Production
For 100 years, USG
has been the leader in gypsum-based products for building and many other
applications, including gypsum rock for Portland Cement (PC)
production.
PC Rock is used by cement
producers in the finish grind to impart setting and working time properties,
along with providing dimensional stability for finished cement and concrete.
Due to our large network of plants, USG Industrial Products Division
has the ability to provide PC Rock to all North American cement manufacturers.
In addition, some of our PC Rock products are sold internationally.
USG PC Rock comes in a
variety of sizes and purities, and can be custom-blended to suit the needs of
any cement producer. PC Rock offerings include gypsum rock, anhydrous rock,
blends, gypsum fines, and synthetic gypsum. Sizing of the product line ranges
from 8 inches to dust, with popular top sizes of 2 to 3 inches. Bottom sizes
typically are ½- to ¼-inch.
|
Typical Range of
Chemical Specifications from USG Plants PC Rock |
|
Gypsum Rock Purity (%
Gypsum) |
76% -
94% |
|
So3 (%) |
35% -
44% |
|
Anhydrous Gypsum Rock (%
Anhydrite) |
75% -
95% |
| Sizing Ranges |
8" to 0" |
For additional
information, contact United States Gypsum Company's Industrial Products
Division, 125 S. Franklin St., Chicago, IL 60606-4678, or call (800)
487-4431.
The Industrial Products
Division of United States Gypsum Company is a leading producer and marketer of
a wide range of industrial products used in manufacturing, tooling, plastics,
coatings, tooling, construction, agriculture, pharmaceuticals, food processing,
statuary, ceramics, road repair and other applications.
United States
Gypsum Company is a subsidiary of USG Corporation, a Fortune 500 company with
business units that are market leaders in their key product groups: gypsum
wallboard, joint compound and related gypsum products; cement board; gypsum
fiber panels; ceiling panels and grid; and building products
distribution. |
