Equipment: 3 bauxite dryers
Dimensions: Length 48 m x diam. 4.8 m
Sector: Bauxite ( rep. of Guinea)
Context: Total refurbishment of three units.
Services: Audit, diagnostic & recommendations
SERCEM INDUSTRIE is well known in the field of heavy mechanics for 50 years in the suburb of Lyons in France .
Our customers are renowned international operators such as Lafarge- Holcim , Heidelberg, Alcoa , Rusal etc ..
They are all world leaders in the field of mining , cement & mineral chemistry .
Our know how is the mechanical improvement of production equipments such as rotary kilns , rotary dryers , mills, crushers etc…in France and abroad .
In this case, one of our customers based in republic of Guinea in the field of bauxite ore, asked us to renovate 3 rotary dryers.
We propose to our client a preventive maintenance project. First of all, we have to carry out a “zero point”.
We will therefore start with a complete expertise of each bauxite dryers
Module 1 . Inspection of shell deformation
- Laser acquisition of the shell profile: 1 section every meter along the entire length of the dryer.- 12 to 16 points per section
- Processing and providing a report for each section
- Delivery of a global report (3D curve graphically synthesizing all the sections)
Module 5 . Alignment checks : (Equipment at standstill, no turn)
The position of the shell centers at the supports
Module 4 . Mechanical Inspections of the bauxite dryers :
The position and parallelism of the axes of the rolling elements, which requires measuring :
- Drum slope,
- Chassis and inter-chassis slopes,
- Rollers slopes,
- Wheel spacing and turning angle of the rollers
- Ø and shapes rollers / tires
- Thrust position,
- Up and down movement and respective positions of the rolling elements
Module 2 . Cartography of shell thickness:
On 2 generators (from the inside), 1 point every 500 mm
Module 5 . Girth gear & pinion static inspection .
Following the audits carried out and the data collected, we provided the client with a precise diagnosis including recommendations for works to be carried out in the short and medium term.
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