Dissertation > Excellent graduate degree dissertation topics show

The sulphide ore roasting tailings into ball performance

Author: ChenWenDa
Tutor: DingYueHua；DiDaCheng
School: Kunming University of Science and Technology
Course: Iron and steel metallurgy
Keywords: Flow of acid sludge Balling performance Pellets Chlorinated volatile
CLC: TF046.2
Type: Master's thesis
Year: 2010
Downloads: 40
Quote: 0
Read: Download Dissertation

Abstract


In this paper, add calcium chloride additives of metallurgical roasting of sulphide ore tailings into ball performance and the performance of high temperature roasting consolidation , also the size composition of sulfuric acid residue and bentonite amount of sulfuric acid residue into ball performance the test ; pellets oxidation consolidation mechanism and the main factors that affect the roasting quality , proposed measures to improve the sulfuric acid residue into ball performance and roasting enhanced . Sulfuric acid residue into ball performance study shows that : grinding sulfuric acid residue into a ball poor performance , high water-holding capacity can not meet the requirements of the metallurgical industry . After grinding can improve the performance of the sulfuric acid residue into a ball , to reduce bentonite dosage and water holding capacity . Reasonable parameters : the slag grinding sulfate 3min ( level of granularity for the -200 / 95.1% ) , bentonite 1.0 % increase with the green ball drop strength of 3.9 times / (0.5m ) , compressive strength 13.29N / burst temperature of 700 ° C . Sulfuric acid residue pellet sintering performance : The green ball with addition of 5 ? Cl2 additives heating up time 45min, calcination temperature 1250 ° C , the calcination time was 15min, 15min firing system of the cooling time , sulfur , copper , arsenic , zinc , lead evaporation rate were 57.54% , 23.08% , 15.22% , 41.21% , 99.59% , pellet oxidized completely consolidation hematite crystals and polycrystalline grew up mainly to dense pellets , the pellets anti 2330.6 N / compressive strength . Solve the problem of the sulfuric acid residue pellets strength . Roasting tests showed that green ball made ??of different dosage of calcium chloride , the calcination temperature of 1250 ° C , calcium chloride, the amount of sulfur , copper , arsenic , zinc , lead volatilization rate 9% respectively 56.42% , 38.46% , 26.09% , 69.87% , 99.68% , and consolidation of the compressive strength of pellets 2054.5N / hematite . Resolves the non-ferrous metal evaporation rate and improve the quality of the pellets . Another oxidizing atmosphere conducive to increase the evaporation rate of sulfur and non-ferrous metals , the consolidation of the solid phase of the pellets do not have much impact . Sulfuric acid residue pellets added calcium chloride is conducive to the volatilization of sulfur and non-ferrous metals , and the compressive strength of the pellets and metallurgical properties of the metallurgical industry requirements . Therefore , the sulfuric acid residue with addition of CaCl2 additives production of pellets can meet the requirements of the blast furnace smelting .

Related Dissertations

  1. Cannabifolius prime Ⅰ, Ⅱ acute toxicity studies with Cannabifolius -Ⅱ Preparation of immediate-release pellets,R283
  2. Research on the Pellet by Microwave Modified Sodium Bentonite,TF046.6
  3. Heavy Pellet Production Optimization,TF046.6
  4. Isosorbide mononitrate sustained release pellets by,R94
  5. Thermal Examine and Analysis for Grate-Kiln Pellets Producing System in BenXi Steel,TF046.6
  6. The Design of 2 Million Tons Pellet Production Line in Ben Steel,TF046.6
  7. Azithromycin enteric-coated pellets , pellets Stomach,R94
  8. Catalystic Combustion of 1,2-dichloroethane on Transition Metal Oxides,O643.3
  9. Establishment of Chromatographic Fingerprint and Serum Pharmacochemistry of Tong SaiMai Tinypil,R286.0
  10. The Relationship between Mycelial Pellets and the Production of Endo-β-1,4-glucanase of Thermoacidophilic Aspergillus Terreus M11 Under Different Submerged Culture Conditions,Q93
  11. The Related Research on Microdiets Processing Technology of Flouder Fish,S963
  12. The Changes of Olfactory Ensheathing Cells in a Rat Model of Acute Rhinosinusitis,R765.21
  13. A Fundamental Investigation on Magnetite Concentrate Oxidized Pellets,TF046.6
  14. Research on Application of MHA Binder in Oxidized Pellet Preparation from Specularite Concentrates,TF046.6
  15. Study on Pellet Sizee Measurement System Base on DM6446,TF321
  16. Study on Propafenone Hydrochloride Sustained Release Pellets,R94
  17. Study on Benproperine Phosphate Sustained Release Pellets,R94
  18. Aspirin dipyridamole capsules,R94
  19. Preparation of Tablets Containing Sustained-release Lovastatin Pellets,R943
  20. Change of High Temperature Strength of Pellets During Roasting in Shaft Furnace,TF046.6

CLC: > Industrial Technology > Metallurgical Industry > General issues > Smelting of raw materials and ore pretreatment > Ore pretreatment, sintered pellets > Roasting, calcining
© 2012 www.DissertationTopic.Net  Mobile