Flame Retardant Rubber Conveyor Belt

Passes the alcohol lamp flame test, with an average flame duration of no more than 60 seconds for three full-thickness specimens after flame removal, and no re-ignition occurring in any single test.

Surface resistivity not exceeding 3×10⁸ Ω, ensuring rapid dissipation of static charges to prevent accumulation.

The cover layer typically has a tensile strength of no less than 10 MPa and an elongation at break of no less than 350%, guaranteeing durability during material conveying.

Commonly made from cotton canvas, nylon canvas (NN), polyester canvas (EP), or blended canvas, processed through calendering, shaping, and vulcanization.

Incorporates flame retardants (such as chlorinated paraffin, antimony trioxide) and carbon black to achieve a balance between mechanical strength and flame resistance with anti-static properties.

Classified by strength into grades such as 680 N/mm, 800 N/mm, and 1000 N/mm, with belt widths ranging from 500 mm up to 1600 mm and beyond.

Primarily used for bulk material conveyance—such as coal, ores, and powders—in surface coal handling lines, power plants, ports, and general chemical plants.

Unlike "mine-use flame-retardant conveyor belts" specifically designed for underground coal mines (which must meet stricter standards like MT914 or GB/T 21352), standard flame-retardant belts are strictly prohibited for direct use in underground coal mine areas where gas and coal dust explosion hazards exist; selection must follow specific safety regulations.

Supports mechanical splicing, cold vulcanizing, and hot vulcanizing. Among these, hot vulcanizing provides the highest joint strength, reaching up to 90% of the belt's tensile strength.