A kind of preparation method of superfine carbon black and preparation device thereof

Abstract

The invention discloses a preparation method and a preparation device for superfine carbon black. The preparation method comprises the following steps of: in a hard carbon black production line, leading a pipeline from a collection area air delivery pipe before granulation of powdery carbon black, leading partial carbon black product out, delivering by using airflow, performing airflow grading on fluid in the pipeline, removing impurities of which the specific gravity is greater than that of the powdery carbon black from the powdery carbon black to obtain the powdery carbon black, drying the powdery carbon black to obtain pure carbon black, and conveying and collecting the pure carbon black by using airflow. The invention is suitable for continuous mechanical production, energy-saving and environment-friendly; carbon black powder can be taken in the conventional carbon black production line, partial powdery carbon black in the production process is taken out to be processed, the mutual influence of a production line system and the device system is greatly reduced, the stability of a production line process and a device process is ensured, and the high energy consumption of the granulation, drying and grinding of the carbon black is avoided.

Description

technical field [0001] The invention belongs to the preparation technology of ultrafine carbon black, and in particular relates to a continuous mechanized, energy-saving and environment-friendly preparation method of ultrafine carbon black and a preparation device thereof. Background technique [0002] Ultrafine carbon black refers to the powdery carbon black that is easily dispersed in the process of fine rubber and plastic products, paint coloring, and polyester fiber coloring. The preparation method adopted in the prior art is to purchase granulated carbon black products with a water content of ≤0.5% from carbon black manufacturers, carry out mechanical or airflow collision crushing on it, classify, collect, and hand-package to become superfine carbon black product. This method has the following defects: in the production process of superfine carbon black, the original powdery carbon black needs to be granulated with water (water / carbon 1: 1) and then dried, which not on...

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Problems solved by technology

This method has the following defects: in the production process of superfine carbon black, the original powdery carbon black needs to be granulated with water (water / carbon 1: 1) and then dried, which not only consumes a lot of energy, but also in the preparation process , especially in the packaging process, where dust pollution is serious

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