FLOMIN™ CGM is a crystal growth modifier used in alumina and phosphate operations to control crystallization, reduce fine particle formation, and support more stable solid/liquid separation performance under variable conditions.
Product Overview
What is FLOMIN™ CGM designed for?
FLOMIN™ CGM is designed to influence nucleation and crystal growth to deliver crystal characteristics that support more stable separation behavior.
In alumina precipitation (Bayer process), gibbsite crystallization is a slow and sensitive step. Because the pregnant liquor contains organic and inorganic impurities, crystallization can be disrupted and fine particles can increase. CGMs are used to control crystal size and shape, limit unwanted nucleation, promote agglomeration of small particles into larger ones, and influence secondary nucleation—supporting improved precipitation performance, filtration, and product quality.
In wet-process phosphoric acid production, FLOMIN™ CGM is designed to act on phosphogypsum nucleation and crystal growth formed during digestion, in order to obtain a crystal structure more favorable to solid/liquid separation. This supports improved filtration behavior by strengthening drainage and wash efficiency, and by stabilizing filtration performance across changing operating conditions.
Key Benefits
Operational impact
Reduced fine particle formation (alumina precipitation)
More consistent particle size distribution
Improved solid/liquid separation performance
More stable filtration and day-to-day operation
Better control of crystallization-driven variability
Improved crystal habit for easier separation
Application
Where / How FLOMIN™ CGM is typically used
Alumina (Bayer precipitation):
FLOMIN™ CGM is used in precipitation circuits to control gibbsite crystal formation in pregnant liquor, limiting fine “seed” formation, promoting agglomeration, and supporting more consistent particle size and precipitation performance.
Phosphate (wet-process phosphoric acid):
FLOMIN™ CGM is added in the digestion circuit, upstream of phosphogypsum filtration, to influence crystal nucleation and growth before solids reach the filters.
Implementation follows an application approach:
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selection of the most effective addition location within the relevant circuit
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alignment with operational objectives (capacity, stability, separation performance)
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monitoring and adjustment to maintain consistent performance under changing conditions
Frequently Asked Questions
Everything you need to know about FLOMIN™ CGM
What is FLOMIN™ CGM?
FLOMIN™ CGM is a crystal growth modifier designed to influence nucleation and crystal growth to improve separation behavior in alumina and phosphate operations.
Is FLOMIN™ CGM a flocculant?
No. FLOMIN™ CGM is a crystallization control solution (Crystal Growth Modifier). It acts on crystal formation rather than flocculation.
Where is FLOMIN™ CGM used in alumina production?
It is used in Bayer precipitation circuits, where gibbsite crystallization occurs from supersaturated caustic aluminate liquor, to control crystal formation, reduce fines, and support filtration and product quality.
Where is FLOMIN™ CGM used in phosphate operations?
It is added in the digestion circuit for wet-process phosphoric acid production, upstream of phosphogypsum filtration, to influence phosphogypsum crystal formation before solid/liquid separation.
What operational results can FLOMIN™ CGM support?
It can support reduced fines generation, more consistent particle size distribution, improved solid/liquid separation performance, and more stable operation by strengthening control of crystallization dynamics.
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