Screw Barrel For Food Extruder

The Screw Barrel for a Charcoal Briquette Extruder is a specialized, heavy-duty component, often constructed from high-hardness, wear-resistant alloy steel, designed to withstand the abrasive nature of pulverized charcoal, biomass, or coal dust; its function is to continuously feed, compress, and extrude the powdered raw material. The screw features a progressively reducing pitch to generate extremely high pressure within the heated barrel (up to 350^∘ C) which activates the binding properties of the material (like lignin in biomass) or added binders, compacting it into dense, high-calorific value briquettes, typically with a hollow core for optimal burning, before they are cut to length at the die exit.