Selection of dry powder materials using a horizontal screw belt mixer

The horizontal screw belt mixer is suitable for mixing the following materials:

Powder and powder mixture: such as lithium battery positive and negative electrode materials, dry powder mortar, putty powder, feed, compound fertilizer, pesticides, chemical raw materials, etc.

Mixing powder with a small amount of liquid/paste: such as plastic particle coloring, PVC ingredients, initial mixing of fillers, real stone paint, putty paste, biopharmaceuticals, food additives, etc.

Mixing of viscous materials: suitable for high viscosity and cohesive materials, such as silicone glue, electronic glue, epoxy resin, etc., with high mixing efficiency and less residue.

Core principles for material selection of horizontal screw belt mixer

The material selection mainly depends on the corrosiveness and cleanliness requirements of the material:

Corrosive materials, such as acids, alkalis, chemical raw materials, etc., require the use of stainless steel (such as SUS304, SUS316L) or anti-corrosion treatment on the surface of carbon steel (such as spraying anti-corrosion paint, cleaning oil, or PTFE material).

High cleanliness scenarios: In industries such as food, medicine, electronic glue, and biology, stainless steel materials (usually SUS304 or SUS316L) must be used to avoid material contamination.

General chemical or powder mixing: If the material has low corrosiveness, carbon steel material can be used, but attention should be paid to the parts in contact with the material. It is recommended to carry out anti-corrosion treatment or use stainless steel lining.

Spiral strap design:

Pitch and width: The pitch of the inner helical belt should be smaller than that of the outer helical belt, and the width should be larger than that of the outer helical belt, otherwise the material is prone to concentrate in one direction, affecting the uniformity of mixing.

Gap design: The recommended gap between the spiral belt and the shell is 4-10mm, and models with adjustable bottom gaps (such as around 3mm) are preferred to reduce unevenness.

Discharge method:

Priority discharge: Avoid discharging from the side outlet, as gradually discharging will delay time and excessive mixing, leading to material segregation.

Discharge port sealing: Choose double-layer sealing gate and other leak proof designs to ensure that the material is poured without dust or powder leakage.

Mixing uniformity and time:

Core indicator: High quality equipment should achieve high uniformity in a short period of time, and manufacturers may be required to provide mixing uniformity data or test reports.

Actual testing and verification: If conditions permit, conduct on-site demonstrations to observe the mixing effect and speed.