Stack Sizer Screen Guide

Start with the classification task, not with a panel name

A stack sizer guide should start with the classification task. A buyer should first describe the fine material being classified, the fractions sought, and the circuit the classification will work in, before naming any panel. The task description should cover the material, the fineness sought in general terms, and whether the circuit is wet or dry, because a panel that suits one task may suit another less well.

A task description written that way narrows the field honestly. It rules out panels that cannot handle the task, and it keeps panels that might suit the task in play until behaviour is compared. A buyer who starts with a panel name instead may defend that name against evidence, rather than testing it against the task. The guide therefore insists on task first, name second.

Describe the circuit honestly

After the task, describe the circuit. The supplier PU page notes that its panel description covers both wet and dry circuits, and that note matters because a circuit changes how material behaves on a surface. Wet material flows differently from dry material, and damp material can cling where dry material would not. A buyer should therefore say which circuit the panel will work in.

A circuit description that covers only the word wet or dry leaves out the behaviours that most affect panel choice. A buyer should also describe how the material is fed, what happens before classification, and what happens to the fractions afterward. Those descriptions together give the supplier a task to answer, rather than a circuit label to guess at.

Bring the machine into the description

After the circuit, bring the machine into the description. A stack sizer panel is fitted to a stack sizer machine, and fit depends on the machine type as well as on the panel itself. A panel that fits one machine may not fit another, and a panel that fits in general terms may not fit the particular machine in the buyer's setting.

A buyer should therefore name the machine type in the inquiry, together with the panel form and the classification task. That combination — machine, form, task, circuit — is what the supplier needs to answer about availability. An inquiry that names only a panel form leaves the supplier to guess at fit, and a guess about fit is not a basis for ordering.

Fine classification against general separation

Fine classification and general separation are different tasks, and keeping them distinct helps the inquiry. Fine classification asks a screen to separate fine material cleanly, while general separation asks a screen to separate material across a wider range on a general vibrating screen. A buyer who needs fine classification should name the stack sizer direction, and a buyer who needs general separation should name the general panel line.

That distinction is why this guide exists alongside the general panel guides. Each guide describes one task, and together they cover the panel range without blurring one task into another. An inquiry that names the right guide will receive a reply about the right task.

Wear, clogging, and maintenance in fine classification

Fine classification raises wear, clogging, and maintenance questions of its own. Fine material can blind openings, damp material can cling, and abrasive fine material can wear a surface. A buyer should describe the feed honestly in the inquiry, including whether it is damp or sticky, because a panel recommendation given for dry material may not hold for damp material.

Maintenance is the other side of fine classification. A panel that is easy to inspect, to clean, and to replace will spend less time out of service than one that is not, and the care page frames maintenance as questions for the inquiry. No maintenance interval is published for this direction.

Turn the classification description into a brief

A classification description becomes a brief when it is joined to a task description, a circuit description, a machine type, and a set of questions about availability, certificates, and timing. The inquiry checklist page gathers those elements into a brief, and the inquiry page carries the form through which the brief is sent.

A brief written that way gives the supplier a task to answer, and it usually produces a reply that addresses the actual classification task. A brief that names only a panel form, without a task, a circuit, or a machine, will usually produce a general description of a panel line. The difference between those two outcomes is the work this guide exists to do.

Questions to settle for a stack sizer screening inquiry

• What fine material is being classified, and what fractions are sought?
• Is the circuit wet or dry, and how is the material fed?
• What stack sizer machine will the panel be fitted to?
• What happens before and after classification?