Dissertation > Excellent graduate degree dissertation topics show

Yunnan the Baozi Pu hematite beneficiation process research

Author: WangYunFan
Tutor: ZhouPing
School: Kunming University of Science and Technology
Course: Mineral Processing Engineering
Keywords: Hematite Stage grinding Magnetic separation Sodium carbonate Reduce the phosphorus
CLC: TD951
Type: Master's thesis
Year: 2010
Downloads: 75
Quote: 0
Read: Download Dissertation

Abstract


Hematite iron ore resources in China account for more than half of total reserves, Usually the ore content low iron, iron minerals disseminate fine grain size, which need to fine grinding to the basic dissociation, and mineral composition is complex, magnetic is weak, dressing is difficult. Hematite resource development in China and use of the building for domestic and foreign steel industry related industries provide a solid material foundation. With fewer and fewer resources of high-grade ore, the technology research of low-grade hematite mineral processing is more and more important.Dongchuan, Yunnan Bao Zipu hematite as the experimental study of this thesis content 38.10% iron, availability of iron minerals are hematite and limonite, in which the iron content of hematite is 77.8% of the iron content in the total iron, whose main gangue mineral is quartz. Harmful sulfur, arsenic content is lower, excessive phosphorus is the serious harmful element,91% of the phosphorus occurs in hematite and limonite, the use of mechanical methods is difficult to be elected.Test first we determined magnetic separation of ore pre-cast by gravity and concentrate-magnetic test, then do further reduce the phosphorus and the reduction rest to concentrate have been rough pre-selected, and mixed in proportion to the 200 mesh grinding fineness of 80% to the middlings after the pre-ore and dressed directly by intensity magnetic separation to achieve a better throwing tail effect of middlings. The relative recovery rate to the ore of the concentrates (Fe 57.11%) and middlings (Fe 49.67%) is 33.04%.After series of experiments on rough concentrate got by pre-selecting, two circuits are determined finally, that is high intensity magnetic separation-regrinding rough concentrate-magnetic separation and high intensity magnetic separation-regrinding rough concentrate-floatation circuit. Under regrinding fineness of 80%-74 u m, excitation current of 18A and magnetic matrices of 1/2 conditions, it could get a concentrate with Fe grade of 61.35%, recovery of 14.58% and second concentrate with Fe grade of 58.5% and relative recovery of 17.12%. And it also got a concentrate with Fe grade of 61.16% and recovery of 33.17% through flotation process in regrinding fineness of 80%-45μm, sodium carbonate for regulator of 1 kg/t, sodium silicate for dispersant of 200g/t, starch for depressant and flocculant agent of 4 kg/t and lurylamine for collector of 150 g/t situations. However the phosphorus grade of concentrate got by high intensity magnetic separation-regrinding rough concentrate-floatation circuit was higher than that got by high intensity magnetic separation-regrinding rough concentrate-magnetic separation circuit. A series of tests shows that it is still an important issue to research on this ores in future due to get better data and more reasonable technological process, meanwhile providing favorable experimental criterion for fine particle hematite processing.

Related Dissertations

  1. Process of Low Grade Iron Ore by Circulating Fluidized Bed Roasting for Iron Upgrade and Dephosphorization,TD951
  2. An Experimental Probe in High Gradient Magnetic Separation Assisted by Ultrasonic Wave Vibration,TD951
  3. Experimental Studies on Iron Recovery of Iron-containing Dust Slime,TD951
  4. Optimize Study on the Dressing Technology of Anqian Mining Co.Ltd,TD951
  5. The Research on Oolitic Hematite Extracting Iron and Preparing Glass-Ceramics from Its Slag,TQ171.1
  6. Synthesis and Properties of High Oil-absorption Resins,TQ324.8
  7. Utilization of the steel industrial solid waste and its basic theoretical research,X756
  8. The Process and Mechanism Study for the Municipal Sewage Treatment by Magnetic Flocculation and High Gradient Magnetic Separation,X703
  9. Study on New Methods and Processes of SO2 Removal with Fe（Ⅲ） /Cast Iron Scraps,X701.3
  10. Study on the Treatment of Hydrogen Sulfide Waste Gas by the Method of Two-step Direct Electrolysis,X701.7
  11. Description on Photocatalytic Degradation of Typical Dyes in Aqueous Solution and Modeling Design of a Novel Photocatalytic Reactor,X703
  12. Experimental Research on Enhancing Recovery Rate of Fine Hematite Particle,TD951.1
  13. Fabrication and Investigation of Two-dimensional Photonic Crystal,O734
  14. Nujiang scheelite Experimental Research on Beneficiation,TD954
  15. A Study on Mechanism and Process of Direct Reduction of Pellets Made from Concentrate and Composite Binder,TF046.6
  16. Study on Separation Technology for Donganshan Hematite Ore,TD951
  17. The Studies on Controllable Synthesis of Iron Oxide Nanomaterials,TB383.1
  18. Gene Mapping and Characterization of Major Late Blight Resistance Complex in Potato (Solanum Tuberosum),S435.32
  19. Dry weak magnetic field airflow suspended Magnetic Separator,TD457
  20. Two grinding precise make-up make up the ball methods are being developed and applied research,TD453

CLC: > Industrial Technology > Mining Engineering > Beneficiation > Metallic Ore Dressing > Black Metallic Ore Dressing
© 2012 www.DissertationTopic.Net  Mobile