Define the operating requirement
Feed mineralogy, suspended solids, pH, dissolved salts and previous coagulant addition all belong in the trial record. Compare overflow clarity and solids-bed behaviour together; rapid settling alone may conceal a difficult underflow.
State the current limitation, not only the chemical name. A supplier needs to know whether the target is water recovery, capture, drainage or a more stable operating window. Include a representative feed analysis and explain how much the feed changes between shifts.
Compare settling and underflow together
Request anionic candidates using the actual slurry and recycled-water composition. Record the existing coagulant and its point of addition, then compare a controlled dose range with the preparation method held constant. Identify each cylinder or test vessel by product code and dose; an unlabelled photograph of large flocs cannot support a purchasing decision.
Watch the overflow after the agreed observation period and assess the settled bed for pumping or filtration. A fast interface may come with a loose bed or fragile flocs that break during transfer. Include solids concentration and transfer conditions when reporting the best candidate to Xinqi. Confirm the proposed code after a representative plant run, not from settling speed alone.
Confirm the purchase specification
Anionic polyacrylamide from Gongyi Xinqi Polymer Co., Ltd. Request a proposed grade and sample for mineral slurry clarification and solids separation.
Before purchase, agree the exact product code, quantity, packaging, destination and acceptance documents. Do not substitute a generic family description for the approved code on the purchase order. Any change of form or preparation requirement should be reviewed with the operating team.
Keep replenishment traceable
Retain the trial record and identify the approved batch where available. At receipt, check the package condition and labels against the delivery documents before transferring material into shared storage. Plan receiving and repeat supply so the next delivery follows the same specification.