The EME-NEND® batch charger - FAQs
Here we answer some of the commonly asked questions. If you cannot find the answer to your question here just use the “Contact” function of the site to send us your question.
Are the screw feeders used on the EME-NEND® charger suitable for use with cullet ?
The answer is “yes”. The first unit was installed on a furnace melting 80+ % cullet.
The screws themselves have a hardened coating to maximise service life. Current screw life is estimated to be about 1 year and initial experience indicates that this is a realistic estimate. However, we are still gaining experience on this matter.
Is there any limitation on cullet size ?
The charger has already shown its ability to handle cullet grain sizes typically used by manufacturers of high quality glassware. The machine can also cope with single larger pieces of cullet, such as container necks and bottoms, that can sometimes be found in the batch.
Can the EME-NEND® batch charger be installed on existing furnaces ?
In many cases it is possible to replace an existing charger with an EME-NEND® machine. In fact, the first installation was made in this way and was very successful.
However, there are many designs and sizes of doghouse in existence and so it is necessary to check each case individually.
The first customer has installed EME-NEND® machines on all his four regenerative furnaces within one year of the initial installation. On three of the furnaces existing conventional pusher machines were replaced by EME-NEND® units on the run
The EME-NEND® batch charger is part of the SORG Integrated Concept for batch handling at the furnace. Does it make any sense to use it without the other components ?
Certainly. Most of the current applications are without the IRD doghouse and batch preheater. The advantages of charging pattern and reduced NOx emissions are available from the batch charger alone.
What is the maximum tonnage that a single EME-NEND® charger can handle?
The maximum throughput of the charger depends on the cullet content. The largest model built so far (EME-NEND® 3) can handle well over 300 tons per day.
Does the EME-NEND® charger need water cooling ?
The pusher arm is water cooled, but the screw feeders are not. The water quantity required is therefore quite low, being only 8 - 12 l/minute.
BATCH3 stands for SORG's three step approach to batch preheating. EME-NEND®, IRD, and batch preheater.