Ribbon Mixer
A ribbon mixer uses a helical ribbon agitator to blend dry powders, granules and pastes with gentle but thorough convective mixing. It is the standard machine for dry …
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PLASTER · GYPSUM · GENTLE BLENDING · DUST CONTROL
Plaster and Gypsum Mixing Equipment: Gentle Blending and Dust Control
Plaster and gypsum blends are sensitive to both mechanical action and dust. Lightweight aggregates break down under high shear, and fine gypsum becomes airborne at every transfer point, so the mixer and the charging system have to be designed together.
Plaster production needs gentle blending to protect lightweight aggregates and dust control at charging, because gypsum dust is the main environmental and operator issue on this line.
Process route
Plaster shares the powder route with dry mortar, but tolerates less shear and generates more dust.
- Receiving and storage. Gypsum, lime and lightweight aggregates are stored separately; hygroscopic components need protection from moisture.
- Dosing. Bulk components are weighed in sequence; the lightweight aggregate dose often needs its own handling arrangement because of its low bulk density.
- Gentle blending. Ribbon or non-gravity mixers blend without high shear, preserving the aggregate structure that gives the product its workability and coverage.
- Dust-controlled charging and packing. Enclosed charging and zero-dust systems keep gypsum dust out of the workplace; packing is enclosed and vented.
Equipment selection
| Stage | Equipment | What it decides |
|---|---|---|
| Blending | Ribbon mixer / non-gravity mixer / double cone mixer | Aggregate integrity |
| Lightweight aggregate handling | Dedicated dosing and conveying | Segregation and volume accuracy |
| Charging | Zero-dust charging system | Operator exposure |
| Packing | Enclosed packer with venting | Dust and pack accuracy |
Specification notes
Why gentle blending matters
Lightweight aggregates are fragile. High-shear or high-speed blending crushes them, which changes yield, coverage and the finished surface.
Dust as a design constraint
Gypsum dust affects both compliance and operator health. Enclosing the charging point and submerging or wetting the powder is more effective than extraction alone.
Equipment for Plaster and Gypsum
Double Cone Drum Mixer
A double-cone drum mixer tumbles powder in a rotating conical vessel, providing gentle homogeneous blending with complete discharge. It is suited to pharmaceutical, food, chemical and fine powder …
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Horizontal Non-Gravity Mixer
A horizontal non-gravity mixer uses counter-rotating agitators to create a weightless mixing zone where particles move freely in all directions, giving very fast and uniform blending. It is …
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Horizontal Paddle Blender
The horizontal paddle blender is a heavy-duty powder mixing machine designed for dry mortar, wall putty, tile adhesive and other building material powders. Features multi-layer paddle agitator for …
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V-Shape Powder Mixer
A V-shape powder mixer tumbles dry powder in a rotating V-shaped vessel, giving gentle, thorough blending ideal for fragile or abrasive materials. It is widely used for pharmaceutical, …
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Horizontal Plough Shear Mixer
The horizontal plough shear mixer features plough-shaped agitators that create intense mechanical fluidization, achieving rapid, high-intensity mixing of powders, granules and pastes. Equipped with high-speed choppers for agglomerate …
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Project reference
Plaster Wall Material Production Line | Mexico — Mexico | Construction Materials | High Solids | Custom Powder Feeding
Zero-Dust Powder Charging for a Plaster Production Line | Mexico — PLASTER LINE / ZERO-DUST POWDER CHARGING / MEXICO
Frequently asked questions
Which mixer is best for plaster?
Ribbon, non-gravity or double cone mixers blend gently, which protects lightweight aggregates. High-shear machines are not appropriate for these blends.
How do you control gypsum dust?
At source: enclosed charging, zero-dust charging systems, bin venting and enclosed packing. Extraction is a secondary measure.
Can plaster and dry mortar share equipment?
Often yes, because both are powder blends. The constraint is aggregate handling and dust control rather than the mixer itself.
Does lightweight aggregate change mixer selection?
Yes. Low bulk density and fragile particles change both the required volume and the acceptable shear, which usually rules out high-speed blending.
Other construction materials
Dry Mortar
Dry mortar production is a powder-blending problem: cement, sand, fillers and additives must be distributed evenly and d
Open Dry Mortar →
Wall Putty
Wall putty is a paste, not a powder blend: powder has to be wetted into a liquid, agglomerates broken down, and entraine
Open Wall Putty →
Tile Adhesive
Tile adhesive is a low-dosage additive problem inside a powder-blending process: polymer, cellulose and setting modifier
Open Tile Adhesive →
Request a quote
Send the formulation, the batch or hourly output, the pack sizes and any dust or emission limits. POLYC MACHINE engineers will confirm the configuration and state clearly where a trial is required before performance is guaranteed.