Method and device for producing high-purity natural graphite

A natural graphite and pure natural technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of high initial investment, long reaction time, difficult treatment of waste water and tail gas, etc., and achieve low equipment cost and high production efficiency. The effect of high efficiency and simple operation

Active Publication Date: 2012-07-11
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
4 Cites 23 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Therefore, not only to produce high-purity graphite, but also to overcome the problems of high initial investment, long reaction time during purification, difficult treatmen...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Abstract

The invention discloses a method and a device for producing high-purity natural graphite, and belongs to the technical field of the purification of inorganic nonmetallic materials. The method comprises the following steps of: carrying natural graphite powder at the concentration of between 90 and 98 percent into a plasma generator by using inert gas; and when the natural graphite powder passes through a high-temperature zone at the temperature of between 3,500 and 4,000 DEG C which is produced by the plasma generator, gasifying and volatilizing all the ash so as to ensure that the natural graphite powder at the concentration of between 90 and 98 percent is purified to obtain high-purity graphite powder at the concentration of over 99.9 percent. Compared with the conventional method and the conventional device, the invention has the advantages that: the method and the device are environment-friendly and low in energy consumption, the process is simple, the continuous production can be performed, the original crystalline structure of graphite is guaranteed not to be changed, and the like.

Application Domain

Technology Topic

Image

  • Method and device for producing high-purity natural graphite
  • Method and device for producing high-purity natural graphite
  • Method and device for producing high-purity natural graphite

Examples

  • Experimental program(2)

Example Embodiment

[0019] Example 1
[0020] Weigh natural graphite powder with a purity of 90%-98%, and start a special device for producing high-purity natural graphite (see figure 1 ), argon pressure: 0.8MPa, powder feeding rate 100g/min, cooling water flow rate: 1.2M/s, using 80KW plasma generator, adjust its working current 20-60A, working voltage: 30-50V, make the plasma generator A high temperature zone of 3000-3600°C is generated between the cathode and anode. The gas and powder passages are designed in the insulator. The inner diameter of the gas and powder passages: 10mm. The inert gas argon is used to carry the natural graphite powder into the plasma generator. The natural graphite powder passes through the cathode and anode of the plasma generator at a high temperature of 300-3600℃. Time, so that all the ash in the graphite (mainly containing SiO 2 , A1 2 O 3 , Fe 2 O 3 , CaO, MgO) gasification and volatilization; during the purification process, natural graphite powder is always protected by inert gas. The test results show that the purity of graphite quality is more than 99.9%, and the original crystalline structure of graphite has not changed.

Example Embodiment

[0021] Example 2
[0022] Start the production of high-purity natural graphite special equipment (see figure 2 ), nitrogen pressure: 0.8MPa, powder feeding rate 145g/min, cooling water flow rate: 1.45M/s, using 80KW plasma generator, adjusting its working current 60-75A, working voltage: 50-80V, make the plasma generator A high temperature zone of 3600-4000℃ is generated between the cathode and anode. The gas channel 2.2 is still in the insulator 7, and the powder channel 2.3 is opened in the trapezoidal opening section of the upper part of the anode 1. The inner diameter of the gas and powder channels are both 10mm. The inert gas argon is used to carry the natural graphite powder into the plasma generator, and the natural graphite powder is passing through In the high temperature zone of 3600-4000℃ generated by the cathode and anode of the plasma generator, all the ash in the graphite (mainly containing SiO 2 , A1 2 O 3 , Fe 2 O 3 , CaO, MgO) gasification and volatilization; during the purification process, natural graphite powder is always protected by inert gas. The test results show that the purity of graphite quality is more than 99.9%, and the original crystalline structure of graphite has not changed.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Similar technology patents

Classification and recommendation of technical efficacy words

  • Easy to operate
  • Reduce equipment costs

Power system with enhanced thermodynamic efficiency and pollution control

InactiveUS6918253B2Reduce equipment costsReduce wearSteam generation using pressureSteam useCondensed waterPressure range
Owner:THERMOENERGY POWER SYST

Gasoline vehicle tail gas discharging pollutant total quantity measuring equipment and method thereof

InactiveCN1888857ASimplify device configurationReduce equipment costsEngine testingSpecific gravity measurementGas concentrationExhaust pipe
Owner:北京金铠星科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products