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Product Information
Innovative modular design renders Delta EMD with an extremely flexible
production facility, capable of efficiently directing output capacity to
align with global EMD market demands. Two major product ranges are
manufactured i.e. High Grade EMD, finding application in Alkaline and
Lithium Primary chemistries and Low Grade EMD, which is consumed in
cylindrical and flat Zinc Carbon cells.
Low Grade EMD is characterised by a tailored particle size and trace
element profile, making it the obvious value proposition for Zinc Carbon
applications. In addition, these materials are generally higher in aqueous
pH to allow for optimum physical and chemical interaction with Zinc Carbon
black mixes.
To satisfy the vastly differentiated requirements of the High Grade
market segment, Delta EMD currently offers various product ranges. These
product ranges are specially designed for optimum value offering in the
following major market segmentations:
| Product
Range |
Performance Segment |
Typical Cell Sizes |
Typical Cell Uses |
| Standard |
Low to Medium drain, mostly
uninterrupted |
Mostly C and D and to a lesser
extent AA and 9V |
Emergency lighting, Remote controls,
Toys with low drain demand, etc |
| Premium |
Medium drain, both uninterrupted and
intermittent |
Mostly AA and to a lesser extent AAA |
Toys with constant and intermittent
drain demands, General purpose electronic devices, etc. |
|
Ultra |
High drain
mostly intermittent |
High rate
performance AA/AAA Digital Media |
Digital media |
|
Lithium Primary |
Medium to
extremely high drain |
Specialised
designs |
Pacemakers,
Defibrillators, Deep-sea buoys, Military applications, etc |
Typical product characteristics are summarised below:
| Physical Properties |
Value |
Units |
| < 75 micron (U.S. Std. Sieve) |
>85 |
% |
| Density (Scott) |
>23 |
g/inch³ |
| Chemical Properties |
Value |
Units |
| MnO2 |
>92 |
% |
| Moisture (Surface and Crystalline) |
>4.5 |
% |
| Sulphates |
>1 |
% |
| pH (aqueous emulsion) |
>6 |
units |
Ca, K
|
<500 |
ppm |
| Trace Elements |
Value |
Units |
| Fe |
<100 |
ppm |
| Cr |
<5 |
ppm |
| Co |
<10 |
ppm |
| Ti |
<100 |
ppm |
| Cu |
<3 |
ppm |
| Pb |
<3 |
|
| Electrochemical Properties |
Value |
Units |
| Open Circuit Voltage |
>1.625 |
Volts vs. Zinc |
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