A belt press grade earns approval through the full drainage and compression sequence. For procurement, cationic polyelectrolyte must produce useful water release without transferring hidden costs into filtrate, belt cleaning or cake handling.
Define the press and belt condition
Record gravity area, belt type, speed, solids loading and washing arrangement. Inspect cloth condition before comparing chemicals. A blinded or damaged belt can make a suitable grade look weak. The belt press application record separates the physical route from the chemical candidate.
Use gravity drainage as a gate
Set a measurable early drainage and filtrate criterion using representative sludge. Keep the sampling point distinct from clear wash water. Reject a candidate that merely creates large floc while allowing unacceptable fines loss. Check whether the early drainage advantage remains through normal feed changes and realistic polymer distribution.
Follow compression and discharge
Apply the zone-by-zone procedure and retain observations of lateral squeeze, pressure-zone permeability, cake solids and release. A water-rich elastic cake may preserve capture but increase disposal mass. Include cleaning and spray demand where those affect uptime or operational cost.
Connect supply to controllability
Compare a useful active-dose band, not one unusually favorable point. Define what operators should change when feed moves and which conditions require retesting. Match the product order to the approved sample and existing make-down system. Do not assume that a different grade labelled stronger will correct a mechanical drainage limitation.
Keep the purchase tied to evidence
Record the candidate code, sample lot, sludge condition and measurement method beside each result. An untested condition is a qualification limit, not an assumed pass. Keep unresolved requirements visible before approving repeat supply.
| Requirement | Evidence | Purchasing decision |
|---|---|---|
| Gravity | Drainage and undiluted filtrate | Early separation is acceptable |
| Pressure | Cake solids, squeeze and release | Benefit survives compression |
| Operation | Dose band and cleaning | Grade remains controllable |
Request a defined sample and quotation
Provide belt and gravity-zone details, loading, wash system, sludge composition, current dose and zone-specific observations. Request sample candidates suitable for the available production test.
Include quantity, delivery destination and requested documents with the sample brief. The quality and supply record connects the qualified product to shipment. Gongyi Xinqi Polymer Co., Ltd. can review the operating case and commercial request; confirm grade-specific availability and terms before ordering.
Request a product and purchasing review
Send the sludge, equipment and supply requirement for the intended duty.