Project Overview
Client: A Leading International Agri-Business / Edible Oil Enterprise
Key Challenge: Frequent filter bag replacement caused by severe iron powder contamination in the process stream.
Solution: Custom Pre-Filtration System with Magnetic Separator
A major global edible oil producer approached CMI Filtration to improve filtration reliability within one of its production lines. The liquid medium contained a high concentration of fine ferrous particles, which rapidly overloaded the existing single-stage bag filtration system.
This resulted in frequent pressure rise, repeated bag changes, excessive maintenance labor, and unnecessary production interruptions.
Operational Challenges
- Short filter bag service life
- High consumable cost due to frequent replacements
- Excessive maintenance downtime
- Unstable process flow caused by differential pressure buildup
- Reduced production efficiency
CMI Engineering Solution
After reviewing the operating conditions, our engineering team concluded that switching to finer micron bags would only accelerate clogging. Instead, we proposed a staged filtration strategy by introducing magnetic pre-filtration upstream of the bag filters.
A custom magnetic separator was designed using a basket-filter-inspired housing structure for strength, low pressure drop, and easy cleaning.
Technical Features
- High-Gradient Magnetic Rods for maximum capture of fine iron contaminants
- Low Pressure Drop Housing based on robust basket strainer architecture
- Quick Cleaning Design for simplified maintenance routines
- Food Grade Stainless Steel Construction for hygienic edible oil service
Field Result
During routine maintenance, a significant volume of iron powder was found captured on the magnetic rods before reaching the downstream filter bags.
This confirmed that the magnetic pre-filtration stage effectively removed the major contaminant load from the system.
- Extended downstream filter bag lifespan
- Reduced bag consumption and operating cost
- Lower labor requirement for bag replacement
- Improved process stability and uptime
- Simple and cost-effective mechanical solution
Conclusion
At CMI Filtration, we focus on practical engineering solutions rather than unnecessary complexity. In this project, a simple magnetic pre-filtration upgrade delivered measurable cost savings and operational improvements for a leading edible oil producer.
The best filtration solution is not always the most expensive one — it is the one that fits the process best.