Rotary magnetic separator and treatment method of weak magnetic substance in ink wastewater

Abstract

The invention discloses a rotary magnetic separator. A main magnetic separator body comprises a first roller, a second roller and a third roller, wherein the first roller and the third roller are horizontally arranged; the second roller is arranged above the first roller and the third roller; a conveyer belt is encircled among the three rollers; magnetic flat plates are fixed at the inner sides of the conveyer belts between the first roller and the second roller, and between the first roller and the third roller; the conveyer belts are attached to the magnetic flat plates to move, so as to form a flat magnetic adsorption work region; a motor is fixed on the frame; the motor drives the first roller, the second roller and the third roller to rotate; a scraper blade is arranged below the outer side of the conveyer belt of the second roller. The invention also discloses a treatment method of a weak magnetic substance in an ink wastewater by using the rotary magnetic separator. The method is wide in range of wastewater treatment quantity, and high in removal rate of the weak magnetic substance, and has a broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, in particular to a rotary magnetic separator for removing weak magnetic substances in ink wastewater. [0002] The invention also relates to a method for treating weak magnetic substances in ink wastewater by using the above-mentioned rotary magnetic separator. Background technique [0003] Ink waste water generated by plate wiping and mold roller cleaning during the printing process is one of the difficulties faced by the printing industry. The main components of ink wastewater are ink, wiping solution, etc. At present, the main technology for treating ink wastewater is the ultrafiltration membrane method: the ink is removed by ultrafiltration membrane filtration and the wiping solution is recovered. However, this wastewater contains some magnetic inks (used in the field of anti-counterfeiting printing, such as train tickets, monthly tickets, stamps, data registration forms, etc.)...

AI Technical Summary

Problems solved by technology

Due to the effect of the magnetic field of the magnetic roller, the magnetic impurities have the characteristics of poor removal

And this equipment is mainly used for the magnetic adsorption of iron filings and steel slag in the coolant of grinding machines and other machine tools, but the removal of weak magnetic substances is not complete

In addition, if this equipment is applied to ink wastewater, the ink slag has a certain viscosity, and it is easy to form a slag cake when the rubber roller is squeezed, and the ferromagnetic substance will fall off and return to the wastewater, and the effect of removing the magnetic substance is not obvious.

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