Continuously-expandable graphite production device

Abstract

A continuously-expandable graphite production device comprises a reaction kettle. A blanking groove is disposed below the reaction kettle, and a jet pipe is arranged below the blanking groove. One end of the jet pipe is connected with an air compressor, the other end of the jet pipe is communicated with a first relay tank, and the blanking groove is communicated with the jet pipe through a siphon. A discharging port of the first relay tank is communicated with a feeding port of a first belt-type vacuum filtering dehydrating device. The continuously-expandable graphite production device adoptsthe special relay tank to immerse and wash reacted materials, thereby being easy to control concentration of acid liquor for immersion. The continuously-expandable graphite production device adopts the belt-type vacuum filtering dehydrating device to conduct sub-sectioned deacidification dehydration processing for the immersed materials, waste acid is recycled, waste water enters a sewage treatment pond, and the whole device is capable of achieving automatic and continuous production. In addition, in terms of follow-up purification work, a production line can be prolonged so that continuous production of graphite acidization and graphite purification can be achieved. The continuously-expandable graphite production device has the advantages of being controllable in concentration of reactedwaste acid, controllable in reaction temperature and high in automation degree, greatly reducing water consumption for washing, decreasing emission and improving production efficiency.

Description

technical field [0001] The invention relates to the field of preparation of expandable graphite, in particular to a continuous expandable graphite production device. Background technique [0002] As a non-metallic material, graphite is widely used in many fields, especially its unique characteristics play an irreplaceable role in other materials in the fields of sealing, heat conduction and heat dissipation. [0003] To expand natural graphite at high temperature, it is necessary to intercalate substances between the sheets to obtain expandable graphite. The current practice is: in a strongly oxidizing environment, intercalation treatment of acid radical ions is performed between the graphite flakes, so that the acid radical ions are fully inserted between the graphite flakes. Natural graphite after intercalation of acid radical ions is often called acidified graphite, that is, expandable graphite. When the expandable graphite is at high temperature (700~1200°C), the acid ...

AI Technical Summary

Problems solved by technology

This process has the following defects: 1. Due to the use of high-speed flowing water for washing, the residual acid concentration of washing is low, which has no recovery value and pollutes the environment; 2. The temperature of the material in the washing process is not easy to control, resulting in unstable product quality; 3. Will use a lot of washing water, wasting water and causing huge environmental pressure

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