We developed an environmental recycling process for textile dyeing sludge that involved a magnetizing roasting–magnetic separation process followed by the preparation of a ceramic filter. The optimal parameters for the magnetizing roasting process included blending the textile dyeing sludge with 5.0% content of coal and roasting at 800 °C for 45 min. The main iron-bearing mineral (Fe₂O₃) was converted to Fe₃O₄. The roasted ore was beneficiated by low-intensity magnetic separation (0.15 T strength of the magnetic field). A concentrate with 57.85% iron grade and 68.11% iron recovery was obtained. A ceramic filter material produced from the tailings of the magnetic separation process met the national standard requirements for water treatment applications. These results offered an effective approach to solve an environmental problem associated with textile dyeing sludge waste products.

我们开发了一种用于纺织品染色污泥的环境回收工艺，该工艺涉及磁化焙烧-磁分离工艺，然后准备陶瓷过滤器。磁化焙烧过程的最佳参数包括将纺织品染色污泥与5.0％的煤混合并在800°C焙烧45分钟。主要的含铁矿物（Fe ₂ O ₃）转化为Fe ₃ O ₄。通过低强度磁选（磁场强度为0.15 T）对焙烧矿石进行选矿。获得具有57.85％铁品位和68.11％铁回收率的精矿。由磁选过程的尾渣生产的陶瓷过滤材料符合水处理应用的国家标准要求。这些结果提供了一种有效的方法来解决与纺织品染色污泥废品相关的环境问题。