Dissertation > Excellent graduate degree dissertation topics show

Research in the Urification of Aphianitic Graphite

Author: LiuJianPing
Tutor: ZhangQingZuo
School: Central South University
Course: Materials Science
Keywords: aphianitic graphite purification soda melting acid leaching chemical dynamics.
CLC: TB321
Type: Master's thesis
Year: 2004
Downloads: 280
Quote: 2
Read: Download Dissertation


Being an important nonmetal mineral with widely applying field, more and more natural graphite is needed to drive the society moving ahead when the quality of available squama-liked graphite resource keep atrophying. Tor efficient the exploitation of aphianitic graphite resource, research aiming to purify aphianitic graphite mined in China have been carried out, which has a carbon content 84.18%.Production method though which graphite with the carbon content 99.75% can be produced has been tackled down with the following parameters: 15 grams of soda, melting temperature from 450 C to 550 C, 5 hours of melting time in soda melting process and the additional of hydrochloric acid and hydrofluoric acid are 30ml and 50ml respectively the leaching temperatures is 70 C. After a three-hours long leaching process, graphite with CGD%99.75%, V%=0.1%,Si%=0.08%, Al%<0.03%,Fe<0.03% can be produced.Phase in purifying process have been researched though technical XRD and analytical chemistry methods. When the chemical dynamics research of silicon in graphite was carried out, chemical process was found to be the restraining process, the chemical dynamics formula was confirmed asand the essential constants have been made sure to beFinally, the chemical beheave of sicilon and aluminum in acid leaching process have been studied though comparison method.

Related Dissertations

  1. Study on Protective Effects of Apple Polyphenol on Immune System Injury Caused by γ-Ray,S661.1
  2. Study on Wastewater Purification Effect of the Free Surface Wetland with Different Substrates and Plant Combination,X703
  3. Penicillium Expansum TS414 Lipase in Pichia Pastori: Expression, Purification and Enantioselective Esterification of (R, S)-naproxen,Q814
  4. Studies on Fermentation Optimization, Purification and Enzyme Characteristics of Lipase from Aspergillus Oryzae FS-1,TQ925.6
  5. Studies on Isolation, Purification and Chemical Structure for Polysaccharides from Camellia Chrysantha(Hu) Tuyama,S567.19
  6. Research of Glycosaminoglycan from Perna Virids Effect on Blood Lipid,R285.5
  7. Purification of Endogenous Proteases from (Litopenaeus Vannamei) Shrimp Head and Their Enzymology Properties,S985.21
  8. Study on the Preparation of the Low Molecular Weight Fuciodan from Sargassum Henslowianum (C.Agardh) and Anti-tumor Activity,TS254.9
  9. Under microaerobic conditions closed calcium carbide furnace exhaust COS gas adsorption purification,X781
  10. Studies on Extraction and Analysis of Fructooligosaccharides in Smallanthus Sonchifolius,TS255.1
  11. Experiment Study of the Biogas Purification Process by Zeolite Filling Washing,TQ221.11
  12. Optimization of Fermentation Conditions, Purification, Cloning and Expression of a Cold-active Lipase from Pseudomonas Sp.RT-1,TQ925
  13. Extraction, Purification and Antifungal Activity of Anthocyanins in Drop Fruits of Chinese Baberry,TQ914.1
  14. Preliminary Research on Characterization of Thermophilic Protease Pasey and Helicase Htc16,Q814
  15. Study on the Separation and Purification Way of Arctiin from Fructus Arctii and the Effect of Arctiin on the Growth of Mice C2C12 Cells,S853.7
  16. Identification of Marine Sreptomyces Sp. GY-4 and Researches on Its Antimicrobial Substances,Q936
  17. Prokaryotic Expression and Purification of Human Beta-Defensin-9,Q78
  18. Screening of Bacterial Strains with High α-Galactosidase Activity and Its Gene Cloning, Expression, Purification and Characterization,TQ925
  19. Study on Extraction, Isolation and Antioxidant Activity of Lignans of Sesame Cake,TS229
  20. Recovery Sulphur from Zinc Concentrate of Pressure Acid Leaching Residue,X751
  21. Study on Antioxidant Activities and Lipase-catalyzed Transesterification of Lard to Produce L-ascorbyl Fatty Acid Esters,TS202.3

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Non-metallic materials > Non-organic materials
© 2012 www.DissertationTopic.Net  Mobile