In nature, starch is available in abundance surpassed only by cellulose as a naturally occurring organic compound. The most common sources of starch are corn, potato, wheat, tapioca and rice.
Corn starch is extracted from the kernel through a process of wet milling. The process employs techniques of grinding, screening and centrifugation to separate purified starch from fiber, oil and tightly bound protein. The wet milling process begins with softening the kernel by steeping it in a diluted acidic solution. Coarse grinding splits the kernel to remove the oil-containing germ. Finer milling separates the fiber from the endosperm which is then centrifuged to separate the less dense protein from the more dense starch. The starch is then washed and dried or left in a slurry for further processing.
Some dust collector operational problems solved by Menardi:
- High differential pressure
- Production loss
- Filter bag blinding
- Premature bag failure
Menardi dust collection products/services used to help eliminate these problems:
- Mikrotex® expanded PTFE membrane laminate
- Mikro-Pleat™ pleated filters
- Micro denier felt aramid filter bags
- PulsePro™ diagnostic system
- Field technical inspections
Example Dust Collection Solution
A starch production facility was experiencing very short filter bag life (one month) and dusting almost immediately upon start up. Menardi increased filtration area by more than 300% and provided a more secure seal at the tubesheet by installing our Mikro-Pleat™ pleated filters with Mikrotex® PTFE membrane instead of the standard filter bag and cage assembly. The conversion allowed this plant to achieve filter life of over one year with no dusting issues. This meant real annual savings to this plant of close to $100K.