Company cases about BASF Improves Plastic Additive Purity with Rotary Grate Magnet & Dry Powder Electromagnetic Separator

BASF Improves Plastic Additive Purity with Rotary Grate Magnet & Dry Powder Electromagnetic Separator

2026-06-13

In early June 2026, the Ludwigshafen factory of BASF completed the upgrading of iron removal system for plastic additive production lines. Talc powder and calcium carbonate raw materials contain trace mechanical wear iron and weak magnetic mineral impurities, resulting in low finished product transparency and failing the standards for high-end medical and food-grade plastic injection molding.

The factory adopted a two-stage magnetic separation solution. The front-end 12000GS rotary grate magnet realizes continuous self-cleaning operation, effectively preventing powder bridging and material blockage during long-term production. The rear-end adjustable dry powder electromagnetic separator with magnetic strength ranging from 8000GS to 15000GS deeply captures micron-level weak magnetic iron particles that cannot be removed by conventional permanent magnetic equipment.

After the upgrading, the iron impurity content of plastic additives dropped from 0.6% to below 0.03%, and product transparency increased to 92%, fully meeting strict EU food contact and medical-grade material standards. The equipment maintenance cycle is extended 3 times, saving about 120,000 Euros in annual maintenance costs for a single production line.

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