Tumbler Index Machine
Tumbler Index Machine
Determination of resistance of iron ore pellets to breakage or degradation by impact and abrasion.
Technical Specification
| 1 | Internal Dimensions of Drum | : | W 500 mm x L 1000 mm |
| 2 | Thickness of Drum Sheet | : | 5 to 6 mm |
| 3 | Dimensions of Lifters | : | 50 x 50 x 5 mm (Angles) |
| 4 | Speed of Rotation of Drum | : | 25 +/- 1 RPM |
| 5 | Counter | : | 6 Digit Electronic counter |
| 6 | Motor off System | : | Digital (8 Minutes / 200 Cycles) |
| 7 | Motor | : | 3HP, 1440 rpm, 50Hz, 440 Volt, 3 Phase, standard make |
| 8 | Gear Box | : | 1:60 Ratio |
| 9 | Shaft Material | : | Alloy steel D2 Grade |
| 10 | Ref. Design Standard | : | As per Bureau of Indian Standard No.: IS:6495 1994 |
General Information
| 1 | Name of Machine | : | Tumbler Index Test Apparatus / Machine |
| 2 | Purpose | : | Determination of resistance of iron ore pellets to breakage or degradation by impact and abrasion. |
| 3 | Test Material | : | Iron oxide lump cores, Sinters, and Pellets etc. |
| 4 | Working Principle | : | This machine consists of a cylindrical drum rolled from mild steel plate. The two circular sides of the drum have two stub axles attached through two circular flanges. The axles are held in two double-row self-aligning ball bearings with the common axis of the axles located in a horizontal plane. The drum is rotated about its axis at the specified speed with the help of an electric motor, worm reduction gearbox, and V-belt pulley arrangement. A preset type digital counter is provided to record the number of rotations of the drum and to automatically stop the motor after a set number of rotations. The bearings on which the drum is pivoted are supported on a heavy-duty fabricated metal frame made from mild steel sections. The motor and worm reduction gearbox are also mounted on the same frame to give a single composite unit. A sheet metal tray is provided below the drum to collect the material coming out when the drum is rotated with the door removed. |
