THE WEAR-RESISTANT PIPELINES with ALUMINOTHERMIC CORUNDUM COATING

1. THE WEAR-RESISTANT PIPELINES with ALUMINOTHERMIC CORUNDUM COATING Energohimkomlect ltd. Chelyabinsk, Russia

2. Examplesoftheusageof hydraulic transportof materialsinvariousbranchesofindustry:

3. Examplesoftheusageofpneumotransport of materialsinvariousbranchesofindustry:

4. Hydraulic ash and slag removal systemwith dual disposal of ash and slag

5. Hydraulic ash and slag removal systemwith separated disposal of ash and slag

6. Pneumohydraulic ash and slag removal system

7. Themainfactorsaffectingtheabrasiveandcorrosivewearofequipmentandpipelines:Themainfactorsaffectingtheabrasiveandcorrosivewearofequipmentandpipelines: • Abrasive properties of conveyed particles, hardness, sharpness and size. • Corrosion properties of the transported material. • Velocity of the moving of pneumo- and hydromixtures. • The materials of which equipment and pipelines are made. • The quality of the installation. • The position of the pipeline (the slope). • The presence of bends of the pipeline and bending radius.

8. Measurestoreducetheabrasionofpipelines: • Periodicrotationoftherectilinearpipesaroundtheiraxisat 90 °. • Transportationofhydro- ordust-airflowwithvelocitiesandconcentrationsofsolidmaterial, notexceedingtheoptimum ones. • Shapeoptimizationofcurvedsectionsofpipelines (reducing ofbendradius). • Makingof the sectionsofaerodynamicstabilizationofflowsattheentrancetotheshapedsectionsofdustfluesandtheoutputofthese, takingintoaccountthezonesofmaximumwear. • Usingofwearresistantelementsofequipmentandpipelines.

9. Wear-resistantelementsofpipeline Increasingofwear-resistance

10. Steel pipe with basalt insert(EUTIT s.r.o, Czech)

11. AlUMINOTHERMIC COATINGS

12. Reduction of iron oxides by aluminum (aluminothermy): 3Fe3O4 + 8Al → 4Al2O3 + 9Fe (1) -ΔH2980 = 839 kJ/moleAl2O3, tad.comb. = 3194 °С Fe2O3 + 2Al → Al2O3 + 2Fe (2) -ΔH2980 = 856 kJ/moleAl2O3, tad.comb. = 3428 °С

13. The formation of aluminothermic coatingon a vertically mounting pipe by reactionary fusing method 1 – Igniter 2 – Thermite mixture 3 – Molten slag (Al2O3) 4 – Molten reduced iron 5 – Surfaced ceramic coat (Al2O3)

14. The formation of aluminothermic coatingon a bended pipe (elbow) by reactionary fusing method 1 – Igniter 2 – Thermite mixture 3 – Molten slag (Al2O3) 4 – Molten reduced iron 5 – Surfaced ceramic coat (Al2O3)

15. PipesØ273х10 mm,length 2 m

16. Three way pipe Ø108 mm

17. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

18. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

19. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

20. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

21. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

22. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

23. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

24. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

25. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

26. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

27. Test of thermite mixture in the pipe Ø108 mm, length 600 mm

28. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

29. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

30. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

31. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

32. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

33. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

34. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

35. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

36. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

37. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

38. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

39. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

40. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

41. The formation of aluminothermic coatingon a pipe Ø273х10 mm, length 2 m

42. The formation of aluminothermic coatingby centrifugal SHS-casting method

43. Thestructureof aluminothermic coatingproducedbycentrifugalSHS-castingmethod Thecross-sectionofsteelpipewith aluminothermic coating a – thepipewall; b – anintermediatemetallayer; c – ceramiclayer. Themicrostructureoftheceramiclayer

44. The comparative properties of pipelines materials

45. Primarycharacteristicsofthe aluminothermic coating

46. Implemented products with aluminothermic coatings