The double shaft paddle mixer is a high-efficiency horizontal mixing unit featuring a counter-rotating dual-shaft design; it rapidly breaks up agglomerated materials and ensures uniform, thorough mixing of both dry and wet ingredients without leaving any dead zones. Durable and wear-resistant, the equipment offers low energy consumption and dust-tight operation. It is suitable for mixing raw materials across various sectors——including organic fertilizer production, industrial mining, and construction materials—and supports custom specifications, serving as a core component in material pre-processing production lines.

How does a double shaft paddle mixer work?

The operation of a double shaft paddle mixer can be divided into four stages: feeding, humidifying, mixing, and discharging.

Feeding stage: Dry powdery material is fed quantitatively and evenly into the mixing trough through the inlet.

Humidifying stage: After the material is conveyed to the humidification section, nozzles arranged axially along the top of the casing create a water-mist curtain to dampen the material. Some models allow for the control of the moisture content in the wetted material via a manual adjustment valve on the water supply line.

Mixing stage: The drive mechanism rotates the main spiral shaft—equipped with multiple sets of blades—and uses meshing gears to drive a secondary spiral shaft to rotate synchronously with the main shaft. As the two shafts rotate in unison, their specialized spiral mixing blades evenly turn, blend, and advance the material through the mixing chamber. The material undergoes forced mixing driven by the counter-rotation of the blades on the two shafts, while simultaneously being subjected to shearing and impact forces from multiple directions—top/bottom, left/right, and front/back.

Discharging stage: Once the humidified and mixed material reaches the desired moisture level, it is discharged through the outlet. The equipment supports continuous operation, ensuring the continuity of the production line.

For which industries is the double shaft paddle mixer suitable?

Organic fertilizer industry: Mixing ingredients such as chicken, cattle, pig, and sheep manure, straw powder, mushroom residue, and distillers' grains;

Compound fertilizer processing: Uniform blending of NPK raw materials, bentonite, and powdered binders;

Industrial, mining, and environmental protection sectors: Humidification and mixing of fly ash, as well as the processing of coal slime, stabilized soil, and slag powder;

Mixing processes for raw materials in construction materials, animal feed, and biomass fuel production.

Why choose Huaqiang Heavy Industry double shaft paddle mixer?

Many mixing equipment on the market can only handle dry and loose raw materials. When encountering livestock and poultry manure with a high moisture content and easy to stick to the wall, it is easy to mix unevenly and the material will hang on the wall seriously.

All our double shaft paddle mixer prototypes have been tested on-site at fertilizer factories in various places, and the structure is iterated based on customer production pain points; we provide a full set of after-sales services from equipment customization, factory layout planning, on-site installation and commissioning, and later parts supply.

Whether you plan to build a powdered organic fertilizer production line or a granular fertilizer processing plant, the technical team can plan the entire equipment list based on your raw materials, site size, and daily processing volume.