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A device and method for preparing water-based graphite by grinding and exfoliating

A graphite and water-based technology, applied in the petroleum industry, additives, lubricating compositions, etc., can solve the problems of unqualified product separation, reduce fluid rotation speed, short duration of action, etc., and achieve energy utilization, production capacity and product quality The effect of improvement, price reduction, and low manufacturing cost

Active Publication Date: 2019-12-10
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Preparation of water-based graphite, the authorized application number is CN201410342664.6 invention patent, which discloses a high-shear grinding reactor, which can be used as a device for mechanically exfoliating graphite to prepare water-based graphite, but it has the following disadvantages: First, the "baffle" used not only increases the resistance and reduces the rotational speed of the fluid, but also makes the trajectory of large and small solid particles cross each other, making it impossible to separate qualified products from the reaction system; second, relying on axial grinding , the shear force is small and the action duration is short

Method used

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  • A device and method for preparing water-based graphite by grinding and exfoliating
  • A device and method for preparing water-based graphite by grinding and exfoliating
  • A device and method for preparing water-based graphite by grinding and exfoliating

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Experimental program
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Effect test

Embodiment 1

[0070] The main parameters of the equipment in this embodiment are shown in Table 1, and the measured working volume is 4.36L. The power of the motor is 1.5kw, the diameter ratio of the driving wheel and the driven wheel is 2:1, and the distance between the moving grinding plate and the static grinding plate is 0.53mm.

[0071] Table 1 Main parameter table of the equipment in this embodiment

[0072]

[0073] It can produce 0.64kg of qualified water-based graphite cold stamping release agent raw materials per hour, and its graphite content is 9.86%. The TEM photo of the product is as follows Figure 9 and Figure 10 shown. The system temperature was 37.2°C.

Embodiment 2

[0075] The main parameter of present embodiment equipment, operating process are with embodiment 1, but 98% sulfuric acid consumption is 5% of N-methylpyrrolidone weight, and graphite consumption is 15% of above-mentioned solution.

[0076] In this embodiment, 0.83kg of qualified water-based graphite cold stamping release agent raw material can be produced per hour, and its graphite content is 15.07%. The product TEM photo and Figure 9 and Figure 10 Much the same. The system temperature was 54.5°C.

Embodiment 3

[0078] When the static grinding plate is installed, an adjusting gasket is added so that the gap between the dynamic grinding plate and the static grinding plate is 0.2 mm. The main parameters, assembly process and operation process of other equipment are the same as in Embodiment 1.

[0079] In this example, 0.76 kg of qualified water-based graphite cold stamping release agent raw material can be produced per hour, the graphite content is 10.51%, and the system temperature is 62.6°C. It can be seen that there is a loss of solvent volatilization. However, the time from feeding materials to qualified products is significantly shortened. Considering the wear of bearings and grinding discs, the high-content graphite experiment was not carried out. Product TEM photos with Figure 9 and Figure 10 Similar.

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Abstract

Disclosed are a device and method for preparing water-based graphite through grinding and stripping. The device comprises a transmission mechanism and a stripping mechanism. The transmission mechanismcomprises a rotating shaft and a power source. The stripping mechanism comprises a cooling barrel, a rotating cylinder and a separating cover, the rotating cylinder is located in the cooling barrel,the lower end of the rotating cylinder is connected with a rotating disc, the rotating disc is provided with backflow ports, and the outer bottom surface of the rotating disc is connected with bladesused for driving fluid to rotate to generate pressure. A plurality of fixed grinding plates are installed on the inner circumferential surface of the cooling barrel, a plurality of movable grinding plates are installed on the outer circumferential surface of the rotating cylinder, and grinding gaps are formed between the movable grinding plates and the fixed grinding plates. The upper end of the separating cover is installed on an end cover arranged on the cooling barrel, the lower end of the separating cover extends into the rotating cylinder, a lower end platform of the separating cover is provided with a discharging outlet, the edge of the lower end platform is provided with a reverse flow port, a middle platform of the separating cover is further provided with a feeding inlet, and theseparating cover and the rotating shaft are in clearance fit. According to the device and method for preparing water-based graphite through grinding and stripping, the technological process is simple,manufacturing cost is low, normal temperature operation is achieved, the production capacity is changeable, and no environmental pollution is caused.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a device and method for grinding and exfoliating water-based graphite. Background technique [0002] The metal cold stamping process requires the use of a release agent with high temperature resistance and strong lubricating ability. So far, the release agent with the best above-mentioned ability recognized by people is still graphite powder. In addition, graphite powder also has the advantages of abundant natural resources and low cost. However, there is a big disadvantage of using graphite powder as a cold stamping release agent, that is, graphite powder flies everywhere during use, which not only wastes graphite but also seriously pollutes the environment, and seriously affects the image and health of operators. For this reason, people have been looking for substitutes for graphite powder, whose performance can be comparable to that of graphite powder. [0003] At pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C19/20B02C23/08B02C23/18B02C23/00B02C23/02C10M125/02
CPCB02C19/0056B02C19/20B02C23/00B02C23/02B02C23/08B02C23/18C10M125/02C10M2201/041C10M2201/14C10N2040/36
Inventor 王利亚王孟娟李冉李森兰
Owner NANYANG NORMAL UNIV
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