Dissertation > Excellent graduate degree dissertation topics show

Research on the Comminution Technological Process and Equipment Modification in the Alumina Production

Author: ZhaoYong
Tutor: TongZhiXue
School: Xi'an University of Architecture and Technology
Course: Mechanical Engineering
Keywords: Alumina Roller mill Ball mill
CLC: TF821
Type: Master's thesis
Year: 2010
Downloads: 102
Quote: 1
Read: Download Dissertation

Abstract


This article describes the process of crushing& milling system in Alumina Refinery,Shandong Aluminium corporation,and points out its existing questions in the present process of first-segment crushing and second-segment milling.With the low efficiency due to 30mm or so of inlet granularity and with Alumina capacity increasing continuously,the throughput of ball mill is insufficient which restricts the product-increase greatly.Unnecessary crushing needn’t be done according to traditional crushing& milling principle. With the development of modern industry,scientists tried to unite crushing and milling together and lodged the principle of more crushing and less milling.But a new principle of crushing instead of milling is reached according to the fine of minerals machining and development of crushing physics and chemics.By research on crushing& milling technology at home and abroad,an unique combination of crusher,roller mill and ball mill is achieved especially for SALCO which can solve the question that ores couldn’t be crushed and milled easily before and make each unit combines the newest crushing& milling with industrial production.This article analyses crushing theory and the configuration and work principle of roller mill, the development of its technology,the influence on productivity and energy consumption of roller mill particularly several main factors(granularity, pressure,rotating speed and moisture of materials),and concludes the change rules of its throughput and energy consumption by using mathematical statistics after substantive industrial trials.To solve the question that single objective function can’t reach maximum simultaneously under the same technical conditions,comprehensive index functions are quoted for the most economy and best application.Inlet granularity of ball mill decreases from original-15.7mm of P80 to-5.3mm,crackles inside the particles increase,materials can be milled easily.To adapt to the change of material property,corresponding alterations are done to ball mill after discussing the impact crush theory and optimal inlet granularity:1.to alter the feeder of ball mill;2.to regulate the ratio of balls to segment cubage and filling rate of bal;3.to reduce three storehouses to two etc.Finally,the throughput of ball mill can rise by more than 36.23%and energy consumption reduce by 26.64%,a new breakthrough is attained which is in the leading class at home.This article validates it is correct to apply crushing instead of milling by process alteratins for crushing& milling process in Alumna Refinery of SALCO and by feasible study and trials on bauxite pre-milling process of roller mill.It validates primary that new ultra-fine equipments of high efficiency and energy consumption,i.e.high pressure roller mill,can increase throughput greatly and decrease consumption of electricity and steel.Simultaneously,it provides a reasonable equipment collocation and optimal parameter selection for industries’,renewal or altering ores crushing and milling system.

Related Dissertations

  1. Ceramic Theramal Sterss Cleaving Technology Based on Laser,TQ174.62
  2. Gel - Foam Preparation of porous alumina insulation materials,TQ174.1
  3. Lithium anode material calcined alumina crucible Development,TQ174.6
  4. Monolith Palladium Catalyst for Purification of Acrylic Acid Emission with High Moisture Content,O643.36
  5. Study on a Two-component Solvent-free PU Adhesive for Aluminum-plastics Compounding,TQ433.432
  6. The Study of Selective Catalytic Reduction of NO by CH4 in Combination of Non-thermal Plasma and Catalysts,O643.32
  7. Controlled Synthesis and Property Studying of Hierarchically Structured Nano-alumina,TB383.1
  8. Study of CH4-SCR to Remove NOx on Pd-supported Metal Catalyst,O643.36
  9. The Industrial Experiment Research on Removing Micro-Water in Mixed C4,TQ028
  10. Nanoimprint Using Porous Alumina Template,TB383.1
  11. CFD Simulation and Verification Experiment of Fluidized Bed with a Adjustable Slit Height Blast Cap,TQ051
  12. Synthesis, Characterization of Co3O4 /Al2O3 Nanomaterials and Catalytic Degradation on Rhodamine B,TB383.1
  13. Based on the porous structure to improve efficiency of LED light,TN312.8
  14. Precipitation from aqueous solution ultrafine spherical alumina Process,TB383.3
  15. Porcelain steel surface preparation in the lining layer of Technology,TG174.45
  16. One -dimensional properties of the material humidity,TB383.1
  17. Research of Preparation of Continuous Alumina Fibers by Sol-Gel Method,TQ343.5
  18. Study and Development on Isostatic Pressing Machine Status Monitoring System for Ceramic Molding Workshop,TP277
  19. Raw slurry feed ingredient batching process returns chaotic time series analysis and SVM Prediction,O211.61
  20. Energy Utilization Analysis and Research of Energy Saving for Alumina Evaporation Progress,TF821
  21. Research on the Utilization of Nontraditional Bauxite Resources Including Sulfur-containing Bauxite and Fly Ash,TF821

CLC: > Industrial Technology > Metallurgical Industry > Nonferrous metal smelting > Light metal smelting > Aluminum
© 2012 www.DissertationTopic.Net  Mobile