TAVERO™ HEA2®

Grinding aid / pack set inhibitor

Product Description

TAVERO™ HEA2®  is an aqueous solution of an amine acetate salt with the following specifications:

Specific Gravity: 1.145 - 1.175

Insolubles: 0.1% max.

pH: 8 - 10

Viscosity: 33 cps @ 21°C

Foaming Tendency: None

TAVERO™ HEA2® is one of the most effective dispersants yet developed for use as a grinding aid/pack set inhibitor for portland cement and other hydraulic cements.

TAVERO™ HEA2® greatly improves the efficiency of the grinding process by reducing the surface energy forces which cause agglomeration of the newly fractured cement particles. TAVERO™ HEA2®  is effective in both open circuit and closed circuit cement mills.

Advantages

Increased mill output at same cement fineness

More than 30 years of industrial TAVERO™ HEA2®  usage at cement plants in America, Europe and Asia-Pacific indicate the following typical production increases:

Blaine Surface

Areab(cm2 /gram)

Typical Mill

Output Increase (%)

2700 - 3100 8 - 15
3100 - 3500 10 - 20
3500 - 4000 12 - 25
4000 - 5000 15 - 30
Over 5000 20 - 40

Reduced grinding costs

The increased mill output with TAVERO™ HEA2®  at same cement fineness and energy consumption provides savings through lower grinding costs per ton of cement.

Higher cement strengths

ASTM test data shows that TAVERO™ HEA2®  significantly increases compressive and flexural strengths of cements, particularly at early ages. Increases as high as 25% are not uncommon; however the average of all tests for all ages is 10%.

Increased cement flowability

The dry dispersive action of TAVERO™ HEA2®  results in vast improvements in cement flowability characteristics. A marked reduction of pack set or “silo set” is also noticeable for TAVERO™ HEA2®  treated cements.The improved flowability of cements with TAVERO™ HEA2®  results in faster loading and unloading times of bulk tankers. Capacities of pneumatic conveying equipment are also increased.

 

The improved flowability of cements with HEA2 results in faster loading and unloading times of bulk tankers. Capacities of pneumatic conveying equipment are also increased.

Pack Set Pumping Rate Index In Tons/Hour
23 42
19 80
7 110

 

A test method for assessing the pack set index (stickiness) of cements is available upon request. Typical information establishing the correlation between pack set index and flowability of cement was shown in a study where pack set indices versus pumping rates, through a 1,500m Fuller Kinyon line, were measured and compared.

Controlled set times

Special HEA2 formulations designed to extend cement setting times are available through your local GCP representative.

Handling

TAVERO™ HEA2®  may be dispensed as received. However, dilution with 5 parts water or more is recommended to ensure greater proportioning accuracy and better additive distribution. Suitable dispensing pumps with adjustable flow rates should be used for optimum performance. Diluted TAVERO™ HEA2®  may be added onto the clinker conveyor belt or sprayed into the mills first compartment.

Greater bulk density

TAVERO™ HEA2®  increases the bulk density of cement by up to five percent, providing increased storage capacities of silos and bulk carriers.

Addition Rate

EA2 typical dosage rates will vary from 0.01% - 0.05% by weight of cement for Types I & II cements and 0.04% - 0.08% by weight of cement for Type III cements.

Blaine Surface Area (cm2 /g) TAVERO™ HEA2®  Dosage Rate % By Weight Of Cement
2700 - 3500 0.01 - 0.02
3500 - 4500 0.02 - 0.04
Over 4500 0.04 - 0.06

Dosing Equipment

GCP grinding aids should be accurately proportioned through a calibrated dosing system, suitable for the cement mill and output required.

Specification Compliance

Approved for use under ASTM C 465 specification as a non- harmful processing addition, TAVERO™ HEA2®  has been thoroughly tested and is widely used in the cement industry.

Packaging

TAVERO™ HEA2®  is supplied in 210L drums, or in bulk by tanker trucks. It contains no flammable materials.

Storage

Protect from freezing. Once frozen, the product should be thawed out slowly and re-mixed thoroughly prior to use. Shelf life is minimum 12 months in manufacturer’s containers.

Technical Services

Field Engineers from GCP Applied Technologies are available to assist in laboratory and mill test evaluations of TAVERO™ HEA2® . Complete testing equipment and methods for analysing mill performance and pack set index are also available during plant trials.

gcpat.hk | Hong Kong customer service: 852 2675 7898

Australia 1800 855 525 New Zealand +64 9 448 1146 China Mainland +86 21 3158 2888 Hong Kong +852 2675 7898 India: Chennai +91 44 6624 2308 Manesar +91 124 488 5900 Indonesia +62 21 893 4260 Japan +81 3 5226 0231 Korea +82 32 820 0800 Malaysia +60 3 9074 6133 Philippines +63 49 549 7373 Singapore +65 6265 3033 Thailand +66 2 709 4470 Vietnam +84 8 3710 6168

We hope the information here will be helpful.  It is based on data and knowledge considered to be true and accurate, and is offered for consideration, investigation and verification by the user, but we do not warrant the results to be obtained. Please read all statements, recommendations, and suggestions in conjunction with our conditions of sale, which apply to all goods supplied by us. No statement, recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third party right.

TAVERO HEA2 is a trademark, which may be registered in the United States and/or other countries, of GCP Applied Technologies, Inc. This trademark list has been compiled using available published information as of the publication date and may not accurately reflect current trademark ownership or status.

© Copyright 2017 GCP Applied Technologies, Inc. All rights reserved. 
GCP Applied Technologies Inc., 62 Whittemore Avenue, Cambridge, MA 02140, USA

Printed materials intended for use in Hong Kong only.

Last Updated: 2019-07-05

https://gcpat.hk/en-gb/solutions/products/tavero-grinding-aids/tavero-hea2