Attachment 14: Bentonite Specification

Attachment 14

SPECIFICATION FOR BENTONITE

(a)

SCOPE AND CLASSIFICATION

This specification covers bentonite material or equivalent to Baroid Minerals and Chemicals.

(b)

PRODUCT SPECIFICATIONS

The physical and chemical properties of the material shall meet the following requirements:
(1)

Physical Characteristics:

PROPERTY

X-RAY ANALYSIS

Montmorillonite
Quartz
Feldspar

REQUIREMENT

92%
3%
5%

SCREEN ANALYSIS

Dry Screen % - 200 Mesh
Wet Screen % + 200 Mesh

80% Typical, 70% Minimum
1.5% Typical, 4.0 % Minimum

FOUNDRY PROPERTIES

Moisture Content
Fann Viscosity @ 600 RPM
Calcium Oxide Present (CaO) %
Methylene Blue Capacity, Meq/100 gr
Liquid Limit Number
Green Compression Strength, psi
(AFS)
Dry Compression Strength, psi (AFS)
Hot Strength 1500° F (5 %)
Compactibility, percent
Moldability Index
pH of 6 % suspension
Specific Gravity
Fusion Temperature, ° F
Bulk Density, Ibs/ft3
Refractory Index
(2)

Typical

8 - 10 Max

0.75
7.0

8.2 - 9.6 Max

2.79
2,444
1.557

Chemical Characteristics: typical

Page 1 of 4 Pages

Attachment 14

PROPERTY

REQUIREMENT

63.59 %

21.43 %

3.78 %

0.66 %

2.03 %

2.70 %

0.31 %

SiO
Al2O3
Fe2O3
CaO
MgO
Na2O
K2O

Bound Water

(c)

5.50 %

RELATIVE ENVIRONMENTAL CONDITIONS

A safety data sheet of the product shall be forwarded by the Supplier and received by the Bureau of Engraving and Printing two weeks before the first delivery and upon any material changes. The following specifications, standards and handbooks form a part of this document to the extent specified herein.
(1)

Certification of Compliance with Environmental and Safety Regulations
Certificates are required to show that the material complies with the following regulations:
a.

40 CFR 720 – Pre-manufacture Notification: Premanufacture Notification Requirements and Review Procedures.

b.

40 CFR 761 - Polychlorinated Biphenyl (PCB's)
Manufacturing, Processing, Distribution in Commerce, and use Prohibitions.

c.

40 CFR Part 268, Subpart B - Schedule for Land Disposal Prohibitions and Establishments of Treatment Standards.

d.

Superfund Amendment and Reauthorization Act (SARA),
Title III.

e.

Test Methods for Evaluation of Solid Waste; EPA Procedure 1030 and Number 7420 SW - 846, Third Edition, November, 2004.

f.

District of Columbia Air Pollution Control Act of 1984. (Copies may be obtained from the District of Columbia Office

Page 2 of 4 Pages

Attachment 14
of Documents, Room 523, the District Building, Washington, D.C. 20004.)

(2)

g.

District of Columbia Rules and Regulations - Title 8 - Health