What matters in the process
For a dosing solution with a known density and active mass fraction, calculate the active-polymer mass flow and divide it by the feed dry-solids flow. Distinguish commercial product concentration from active content where they differ. The best dose is not necessarily the lowest: inadequate conditioning can reduce capture or change cake handling and return-load costs.
A practical example
An illustrative 100 kg/h dosing stream containing 0.2 wt% active polymer adds 0.2 kg/h of active polymer. At 200 kg/h feed dry solids, the dose is 1 kg per tonne of dry solids. Doubling solution flow while halving its active concentration leaves that normalized dose unchanged.
What to check or specify
- Report active concentration and solution density.
- Measure feed dry-solids loading.
- Record cake dry solids and capture at each dose.
- Identify polymer type, preparation and aging conditions.
Turn the result into a decision
Use representative trials to select polymer and dose, then size preparation and dosing equipment for the demonstrated range. Avoid comparing one supplier’s diluted-solution flow with another’s dry-polymer consumption. The final operating-cost model should state exactly which material and price basis it uses.
Equipment context: supplied HUADA English catalogue, PDF pages 57–59. Numerical examples are illustrative calculations. Application guidance must be confirmed for the actual material and selected equipment.
