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Research on Flocculation Characteristic of Fine Hematite Particles

Author: YuYang
Tutor: NiuFuSheng
School: Hebei University of Technology
Course: Mineral Processing Engineering
Keywords: Micrograined Hematite Flocculation Numerical Simulation
CLC: TD951.1
Type: Master's thesis
Year: 2009
Downloads: 41
Quote: 0
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Abstract


The micro - fine disseminated hematite efficient use of resources facing one of the problems , the sorting indicators , use the existing sorting process is difficult to obtain satisfactory flocculation sorting method can fine disseminated hematite resources will be utilization. On the basis of the research work in the field of comprehensive analysis of fine mineral particles sorting micrograined embedded cloth weakly magnetic iron ore sorting problems , launched a study of Hebei, a micro- to fine hematite flocculation characteristics . Dispersion test of the influence factors of the dispersion process dispersion stability of fine mineral particles suspension , dispersed in distilled water medium was better than tap water , the three dispersants strength order dispersion capacity of SHP gt ; the STPP gt ; SS three dispersants optimum pH11 dispersion capability , the best mixing time of 4min stirring speed 1000r/min . Dispersion test based on the flocculation pilot study to examine the factors and fine mineral particles flocculation degree of flocculation processes affect the relationship . Within a certain range , the conditions similar dispersion effect SHP1.25mg / L , STPP5mg / L , SS40mg / L, the amount of starch must 1mg / L flocculation effect is also similar to the optimum stirring time for 4min, stirring speed of 700r/min . Assay to study the the starch adsorption kinetics on the micro- fine hematite , combined with collision theory of hematite - starch reaction equation obtained hematite - starch reaction is a reaction . The numerical simulation of the flocculation process , through the establishment of the stirring speed , the quantitative relationship between the overall average effective energy ε, sedimentation rate Es and whirlpool microscale λ , explain why the stirring speed 700r/min flocculation best reason . By flocculation characteristics of a study on the system of fine mineral particles dispersed and the flocculation process key influencing factors and laws for micrograined embedded cloth hematite effective separation provide a basis for the micro- fine-grained hematite particles , which will undoubtedly of micro- fine-grained hematite rational use of resources to produce a positive role in promoting .

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CLC: > Industrial Technology > Mining Engineering > Beneficiation > Metallic Ore Dressing > Black Metallic Ore Dressing
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