阅读说明：本技术 一种小型石墨膨胀制备方法及装置 (Small graphite expansion preparation method and device ) 是由 刘妍 任一石 于 2020-04-30 设计创作，主要内容包括：本发明涉及一种小型石墨膨胀制备方法及装置,包括U型管道、进料斗、加热火源、出料口、温度计和石墨死虫收集槽,U型管道一侧的出口伸入出料口内部,U型管道的另一侧管道上依次设置有进料斗、温度计和加热火源,且下端出口处置有石墨死虫收集槽。进料斗与U型管道联通的管道上设有阀门。本发明设计巧妙,结构简单,可以大批量制备膨胀石墨,既高效又可节约成本。(The invention relates to a small graphite expansion preparation method and a device, which comprises a U-shaped pipeline, a feed hopper, a heating fire source, a discharge port, a thermometer and a graphite dead-worm collecting tank, wherein an outlet at one side of the U-shaped pipeline extends into the discharge port, the feed hopper, the thermometer and the heating fire source are sequentially arranged on the pipeline at the other side of the U-shaped pipeline, and the graphite dead-worm collecting tank is arranged at an outlet at the lower end of the U-shaped pipeline. And a valve is arranged on a pipeline for communicating the feed hopper with the U-shaped pipeline. The invention has the advantages of ingenious design and simple structure, can prepare the expanded graphite in large batch, and is efficient and cost-saving.)

1. A small-size graphite inflation preparation facilities which characterized in that: the device comprises a U-shaped pipeline (1), a feed hopper (2), a heating fire source (3), a discharge port (4), a thermometer (5) and a graphite dead-worm collecting tank (6) which is not expanded, wherein an outlet on one side of the U-shaped pipeline (1) extends into the discharge port (4), the feed hopper (2), the thermometer (5) and the heating fire source (3) are sequentially arranged on the other side pipeline of the U-shaped pipeline (1), and the graphite dead-worm collecting tank (6) which is not expanded is arranged at the outlet of the lower end.

2. The miniaturized graphene expansion device of claim 1, wherein: a valve is arranged on the pipeline communicating the feed hopper (2) and the U-shaped pipeline (1).

3. The miniaturized graphene expansion device of claim 1, wherein: the heating fire source (3) sprays combustion body of acetylene gas or natural gas and oxygen.

4. The expansion preparation method of the small graphite is characterized by comprising the following steps:

step a, placing natural graphite raw material graphite subjected to strong oxide intercalation into a pipeline on one side of a U-shaped pipeline (1) through a feed hopper, and opening flame of a heating fire source (3) to heat the graphite, wherein the temperature is controlled to be 500-800 ℃;

b, rapidly expanding the volume of the intercalated graphite after being heated to obtain expanded graphite, rapidly introducing a large amount of air into the U-shaped pipeline (1), and pushing the expanded graphite to the other side of the U-shaped pipeline (1);

and c, dropping the expanded graphite into the discharge port (4), namely collecting the expanded graphite, and dropping the expanded graphite which is not fully heated or intercalated into the collecting tank (6).

Technical Field

The invention belongs to the technical field of graphite preparation, and particularly relates to a method and a device for preparing small expanded graphite.

Background

Disclosure of Invention

The invention aims to solve the problem that a large amount of expanded graphene cannot be obtained simply, conveniently and quickly in the existing graphite preparation, and further provides a small graphite expansion device.

The technical scheme of the invention is as follows: the utility model provides a small-size graphite expansion device, includes U type pipeline 1, feeder hopper 2, heating fire source 3, discharge gate 4, thermometer 5 and graphite dead worm collecting vat 6, inside the export of 1 one side of U type pipeline stretched into discharge gate 4, set gradually feeder hopper 2, thermometer 5 and heating fire source 3 on the opposite side pipeline of U type pipeline 1, and the lower extreme exit put graphite dead worm collecting vat 6.

Furthermore, a valve is arranged on a pipeline communicated with the feed hopper 2 and the U-shaped pipeline 1.

Further, the heating fire source 3 injects a combustion body of acetylene gas or natural gas and oxygen.

The invention has the following beneficial effects: the invention has the advantages of ingenious design, simple structure, high efficiency and saving, and can be used for preparing a large amount of expanded graphite.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

The invention is further illustrated by the following specific examples:

referring to fig. 1, in the present embodiment, the small graphite expansion device includes a U-shaped pipeline 1, a feeding hopper 2, a heating fire source 3, a discharge port 4, a thermometer 5, and a graphite dead-worm collecting tank 6, an outlet on one side of the U-shaped pipeline 1 extends into the discharge port 4, the feeding hopper 2, the thermometer 5, and the heating fire source 3 are sequentially disposed on the other side pipeline of the U-shaped pipeline 1, and the graphite dead-worm collecting tank 6 is disposed at an outlet on the lower end. A valve is arranged on a pipeline communicated with the feed hopper 2 and the U-shaped pipeline 1, and after the valve is opened, the expanded graphite enters the pipeline 1 to be heated. The heating fire source 3 is a combustion body of acetylene gas or natural gas and oxygen to heat the graphite to be expanded. The thermometer is used for monitoring the temperature in the pipeline 1, and the temperature in the pipeline 1 is controlled to be 500-800 ℃ by controlling the flame of the heating fire source 3. The external cold air enters the pipeline 1, and the heated expanded graphite can be pushed into the discharge hole 4.

The novel reaction raw material is expanded graphite, and the preparation method comprises the following steps:

adding natural crystalline flake graphite into a mixed acid solution of sulfuric acid and nitric acid under continuous stirring, adding potassium permanganate, controlling the temperature, adding ferric trichloride, stirring, reacting for a certain time, inserting the strong oxidant into the natural crystalline flake graphite layer to form intercalated graphite, centrifugally separating, soaking and washing with a dilute alkali solution, washing to neutrality, dehydrating and drying to obtain the to-be-expanded graphite.

The using method comprises the following steps:

placing the graphite to be expanded into a pipeline on one side of a U-shaped pipeline 1 through a feed hopper, and opening flame of a heating fire source 3 to heat the graphite to be expanded, wherein the temperature is controlled to be 500-800 ℃; the volume expands to 300 times rapidly after being heated, and inside cold air got into U type pipeline 1 from U type pipeline lower extreme a large amount of fast, pushed the expandable graphite to the opposite side of U type pipeline 1, the expandable graphite fell into discharge gate 4, and the expanded graphite that is not fully heated or preliminary treatment fell back to in the graphite dead worm collecting vat 6 again because weight is great.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the embodiments of the present invention, and those skilled in the art can easily make various changes and modifications according to the main concept and spirit of the present invention, so the protection scope of the present invention shall be subject to the protection scope of the claims.