Dissertation > Excellent graduate degree dissertation topics show

Alicyclic class carboxyl hydroxamic acid compounds synthesized collector performance study

Author: YiYunLai
Tutor: JiangYuRen
School: Central South University
Course: Organic Chemistry
Keywords: Carboxyl hydroxamic acid Collector A diaspore Aluminosilicate minerals Adsorption mechanism
CLC: TD923.13
Type: Master's thesis
Year: 2010
Downloads: 75
Quote: 0
Read: Download Dissertation

Abstract


Development of low-grade bauxite efficient positive flotation to improve one of our diaspore bauxite aluminum-silicon ratio (A / S), is of great significance to solve the problems existing in China 's alumina production . Carboxyl hydroxamic acid collector alicyclic group Synthesis and made ??a systematic study of a boehmite , kaolinite and illite flotation performance , and by the amount of adsorption measurements , Zeta potential measurement and infrared spectroscopy , etc. means to explore the mechanism of action of the collector with a diaspore and aluminosilicate minerals . Hydroxylamine hydrochloride with the corresponding ester as the main materials MCTB , and CETB two kinds of collectors , and their structures were characterized by means of infrared spectroscopy and elemental analysis . Single mineral flotation experimental results show that the collector MCTB, CETB at a concentration of 2 × 10- 4M , a diaspore flotation pH 6-7 , a recovery rate of diaspore 90.2% and 72.8% ; the while MCTB the CETB recoveries of kaolinite and illite are low , less than 36.1% , showed that MCTB are superior selectivity and collector of CETB . The use MCTB further separation of the artificial mixed ore and mineral flotation . Experimental results show that at pH = 6.3 , the the collecting agent MCTB concentration of 6.0 × 10-4M-8.0 × 10-4M , a diaspore and aluminum silicate minerals separation can be achieved . MCTB is expected to become a new type of chelating bauxite collector . Zeta potential measurement results show that the dynamic potential of the collector of a diaspore greater impact , while a relatively small impact on the dynamic potential of kaolinite and illite ; mineral particles by scanning electron microscopy (SEM) images (× 20,000) shows that the mineral particles appearance , surface structure flotability is essential. The adsorption amount of experimental results show that , MCTB in a diaspore surface adsorption is much larger than the amount of kaolinite , illite surface adsorption , consistent with the order of the single mineral flotation recoveries . Infrared spectroscopy further evidence collector in a diaspore surface -COOH and -CONHOH the aluminum ion chemistry of the mineral surface into a key role in kaolinite , illite surface to produce hydrogen role.

Related Dissertations

  1. Alkyl the carboxyl hydroxyl acids synthesis and Al-Si flotation performance,TD952
  2. The design and synthesis of single carboxyl hydroxamic acid and its water hard boehmite and Al-Si mineral collector performance,TD952
  3. Research on Fabrication of Fresnel Lens Using in the Concentrator Photovoltaic Systems,O435
  4. The new carboxyl hydroxamic acids collector synthesis and its flotation separation behavior of Al-Si minerals,TD952
  5. Microscale pore adsorption desulfurization research,TE624.5
  6. Research on the Separation of Scheelite from Calcareous Gangue Minerals by Flotation with Cationic Collectors,TD923.13
  7. Research on Quasi-Noncontact Capacitive Current Collector,TM503.5
  8. Deep sea mining machine running speed Predictive Control,TD424
  9. Research on Dynamic Test Method for Thermal Performance of Solar Collectors,TK515
  10. Research on High-pressure Spray Application in Heading Face,TD714.4
  11. Yunnan Yangla refractory and mechanism of copper flotation,TD952
  12. Yunnan, a normal low grade scheelite flotation technology research,TD954
  13. Studies on Extraction, Separation and Purification of Aloe-sin,R284
  14. The Flotation Research of High Sulphur and Difficult Separation-copper Ore,TD952
  15. Novel hydroxamic acid chelating collector Synthesis and properties of Al-Si mineral flotation,TD952
  16. Studies on Effect of CPC and Sodium Oleate on the Floatability of Aluminum-Silicon Minerals of Different Particle Size and Its Mechanism,TD952
  17. Preparation of Sugar-based Carbon and Its Application Research,X703
  18. Study on the Anti-Corrosion of Alumium Current Collector for Lithium-Ion Battery,TM912.9
  19. Study on the Effect of Calcium and Magnesium Ions on the Dispersion and Flocculation of Aluminum-silicate Minerals and the Elimination Method,TD952
  20. Micro-fine - diaspore and kaolinite flotation studies,TD97

CLC: > Industrial Technology > Mining Engineering > Beneficiation > Beneficiation processes and methods > Planktonic dressing > Flotation reagent > Trapping agent
© 2012 www.DissertationTopic.Net  Mobile