logging in or signing up size reduction mills Sudha.Thamarapalli Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 2485 Category: Education License: All Rights Reserved Like it (12) Dislike it (0) Added: October 02, 2010 This Presentation is Public Favorites: 1 Presentation Description gives an overview on mills used for size reduction of material Comments Posting comment... By: osamazekra (1 month(s) ago) please allow me to download this ppt.. ososos88@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close By: dandak (4 month(s) ago) hanafi:your ppt presentation is excellnt.could u please forward this to my mail.,ashourhanafi@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close By: faiyu (10 month(s) ago) your ppt is best i ever seen........ so please could send it on my mail.. fayu1222@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: pavandevineni (12 month(s) ago) your ppt presentation is excellnt.could u please forward this to my mail.....siva.ch85@gmail.com. Please........ Saving..... Post Reply Close Saving..... Edit Comment Close By: shahbazaa (13 month(s) ago) please allow me to download this ppt...urgently Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Slide 1: 9/15/2010 1 SIZE REDUCTION MILLS : AN OVERVIEW By SUDHA.TM.Pharm Slide 2: Cutting - Sharp blades Compression - crushed between rollers Impact - material strikes against rotating hammers Attrition - rubbing action between two surfaces MODES OF STRESS BASIC COMPONENTS OF A MILL : BASIC COMPONENTS OF A MILL HOPPER MILLING CHAMBER RECEIVER SIZE REDUCTION EQUIPMENT : SIZE REDUCTION EQUIPMENT EDGE RUNNER/ ROLLER MILL END RUNNER MILL/ MECHANICAL MOTOR & PESTEL CUTTER MILL/ ROTARY CUTTER ROLLER MILL HAMMER MILL/ IMPACT MILL BALL MILL/ TUMBLING MILL & TUBE MILL FLUID ENERGY MILL/ JET MILL SQUIRREL CAGE DISINTEGRATOR COLLOIDAL MILL/ OINTMENT MILL Slide 5: EDGE RUNNER MILL Principle: Shearing between roller and base; Crushing below the rollers Slide 6: Principle: Shearing between roller and base; Crushing below the rollers END RUNNER MILL Slide 7: CUTTER MILL Size reduction takes place with the aid of sharp blades Principle – Cutting ROLLER MILL : ROLLER MILL Size reduction takes place due to the compression of material in between the rollers Principle: Compression Grinding Elements: Rollers Modifications : Rollers with sharp edges Slide 9: HAMMER MILL Principle: Break the material with hammers Grinding Media: Hammers Types of hammers: 1. Swinging 2. Fixed Slide 10: HAMMER MILL MODIFICATIONS : Hammer Crusher & Mikro Pulverizer Slide 11: BALL MILL Principle: Tumbling & Attrition between balls. 3 modes of movement of balls Critical speed High speed Modification: Hardinge Mill, Continuous Ball Mill Slide 12: TUBE MILL BALL MILL The length of the mill chamber is greater than its diameter. Different size balls are used at a time Rotates at a relatively lower speed Relatively finer product The length of the mill chamber is almost equal to its diameter Same size balls are used Rotates at a relatively faster speed Relatively coarser product is obtained FLUID ENERGY MILL : FLUID ENERGY MILL Principle: Size reduction takes place due to collision between particles Slide 14: SQUIRREL CAGE DISINTEGRATOR Principle: Impact & Attrition between rods Grinding Elements: Rods fixed to the discs. Slide 15: Principle: Shearing between rotor and stator. Mainly used for liquids COLLOIDAL MILL Slide 16: Cutter mill - Cutting - Fibrous & tough material - Plant parts Roller mill -Crushing/ - Crushing of seeds & soft tissues compression b’n rollers Hammer mill -Impact b’n - Brittle; Non abrasive – mod. hammer & material abrasive & fibrous Ball mill -Attrition - hard & abrasive materials Air jet mill -Impact & Attrition -Mod. Hard materials; Antibiotics & Vitamins Colloidal mill -Shearing between - formation of emulsions; breaking rotor & stator of agglomerates in liquids Disintegrator - Impact & Attrition - Brittle materials MILL PRINCIPLE TYPE OF MATERIAL Slide 17: Sterile preparations Volatile materials Hygroscopic materials Easily oxidizable materials BALL MILL IMPACT MILLS Cohesive materials - Slide 18: http://www.plas-video.com/REP/hammer-mill.htm http://www.metacafe.com/watch/1152623/crushers_mills/ http://rpaulsingh.com/animated%20figures/fig12_8.htm VIDEO LINKS FOR MILLING Slide 19: THANK YOU You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
size reduction mills Sudha.Thamarapalli Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 2485 Category: Education License: All Rights Reserved Like it (12) Dislike it (0) Added: October 02, 2010 This Presentation is Public Favorites: 1 Presentation Description gives an overview on mills used for size reduction of material Comments Posting comment... By: osamazekra (1 month(s) ago) please allow me to download this ppt.. ososos88@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close By: dandak (4 month(s) ago) hanafi:your ppt presentation is excellnt.could u please forward this to my mail.,ashourhanafi@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close By: faiyu (10 month(s) ago) your ppt is best i ever seen........ so please could send it on my mail.. fayu1222@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: pavandevineni (12 month(s) ago) your ppt presentation is excellnt.could u please forward this to my mail.....siva.ch85@gmail.com. Please........ Saving..... Post Reply Close Saving..... Edit Comment Close By: shahbazaa (13 month(s) ago) please allow me to download this ppt...urgently Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Slide 1: 9/15/2010 1 SIZE REDUCTION MILLS : AN OVERVIEW By SUDHA.TM.Pharm Slide 2: Cutting - Sharp blades Compression - crushed between rollers Impact - material strikes against rotating hammers Attrition - rubbing action between two surfaces MODES OF STRESS BASIC COMPONENTS OF A MILL : BASIC COMPONENTS OF A MILL HOPPER MILLING CHAMBER RECEIVER SIZE REDUCTION EQUIPMENT : SIZE REDUCTION EQUIPMENT EDGE RUNNER/ ROLLER MILL END RUNNER MILL/ MECHANICAL MOTOR & PESTEL CUTTER MILL/ ROTARY CUTTER ROLLER MILL HAMMER MILL/ IMPACT MILL BALL MILL/ TUMBLING MILL & TUBE MILL FLUID ENERGY MILL/ JET MILL SQUIRREL CAGE DISINTEGRATOR COLLOIDAL MILL/ OINTMENT MILL Slide 5: EDGE RUNNER MILL Principle: Shearing between roller and base; Crushing below the rollers Slide 6: Principle: Shearing between roller and base; Crushing below the rollers END RUNNER MILL Slide 7: CUTTER MILL Size reduction takes place with the aid of sharp blades Principle – Cutting ROLLER MILL : ROLLER MILL Size reduction takes place due to the compression of material in between the rollers Principle: Compression Grinding Elements: Rollers Modifications : Rollers with sharp edges Slide 9: HAMMER MILL Principle: Break the material with hammers Grinding Media: Hammers Types of hammers: 1. Swinging 2. Fixed Slide 10: HAMMER MILL MODIFICATIONS : Hammer Crusher & Mikro Pulverizer Slide 11: BALL MILL Principle: Tumbling & Attrition between balls. 3 modes of movement of balls Critical speed High speed Modification: Hardinge Mill, Continuous Ball Mill Slide 12: TUBE MILL BALL MILL The length of the mill chamber is greater than its diameter. Different size balls are used at a time Rotates at a relatively lower speed Relatively finer product The length of the mill chamber is almost equal to its diameter Same size balls are used Rotates at a relatively faster speed Relatively coarser product is obtained FLUID ENERGY MILL : FLUID ENERGY MILL Principle: Size reduction takes place due to collision between particles Slide 14: SQUIRREL CAGE DISINTEGRATOR Principle: Impact & Attrition between rods Grinding Elements: Rods fixed to the discs. Slide 15: Principle: Shearing between rotor and stator. Mainly used for liquids COLLOIDAL MILL Slide 16: Cutter mill - Cutting - Fibrous & tough material - Plant parts Roller mill -Crushing/ - Crushing of seeds & soft tissues compression b’n rollers Hammer mill -Impact b’n - Brittle; Non abrasive – mod. hammer & material abrasive & fibrous Ball mill -Attrition - hard & abrasive materials Air jet mill -Impact & Attrition -Mod. Hard materials; Antibiotics & Vitamins Colloidal mill -Shearing between - formation of emulsions; breaking rotor & stator of agglomerates in liquids Disintegrator - Impact & Attrition - Brittle materials MILL PRINCIPLE TYPE OF MATERIAL Slide 17: Sterile preparations Volatile materials Hygroscopic materials Easily oxidizable materials BALL MILL IMPACT MILLS Cohesive materials - Slide 18: http://www.plas-video.com/REP/hammer-mill.htm http://www.metacafe.com/watch/1152623/crushers_mills/ http://rpaulsingh.com/animated%20figures/fig12_8.htm VIDEO LINKS FOR MILLING Slide 19: THANK YOU