Analysis of refractory degradationProcedures for its identification and documentation.

TO DOWNLOAD THE MOST IMPORTANT BOOKS , MANUALS , OPERATION NOTES , FORMUFLAS , EXCEL SHEETS CLICK HERE NOW !!

Wear or Damage?

• Ideal Wear

  (As consequence of  OEE > 0.85, service life of 12, 24, 36 months)

• Normal Wear (to date)

  Slow, continuous loss of lining thickness, with service life < 12, 24, 36 months

• Damage

  Sudden, rapid loss of lining thickness (at any time)

Factors influencing Service Life

Extended factors influencing service life

User’s Responsibility

• installation
• drying/heating-up
• service conditions
• thermal-mechanical- chemical

Producers Responsibility

• raw material quality
• quality of manufacture
• product design

Combined Responsibility

• selection
• packing / storage

User’s Responsibility

• installation (10%)
• drying/heating-up (?)
• service conditions (67%)

thermal (18%)-mechanical (24%)-chemical (25%)

Producers Responsibility

• raw material quality (17%)
• quality of manufacture (3%)
• product design (1%)

Combined Responsibility

• selection (2%)
• packing / storage (?)

Indicators come from various sources

Information available to plant

• Refractory specification sheets
• Previous refractory history of kiln
• Shell scanner print-outs
• Location of hotspots on kiln shell (welds, tyres, drive)
• Shell ovality / alignment and permanent deformation data
• Number / duration of kiln stops
• Variations of kiln feed rate / chemical composition
• Colour of clinker (reducing conditions)
• Intensity of clinker burning (free lime)
• Photos showing in-situ appearance of worn refractory
• Appearance of vertical cross-section of refractory

Factors requiring laboratory tests

• Chemical and mineralogical composition of worn refractory
• Macro- and micro-texture of worn refractory
• Micro-chemical analysis of worn refractory
• Thermal conductivity

Data-sheet as indicator

Lining history as indicator

Location as indicator

Shell ovality / alignment as indicator

In-situ appearance as indicator

Vertical cross-section as indicator

Brick colour as indicator

best Regards

if you have any question Regarding Refractories

please contact us at : project20062015@gmail.com

TO DOWNLOAD THE MOST IMPORTANT BOOKS , MANUALS , OPERATION NOTES , FORMUFLAS , EXCEL SHEETS CLICK HERE NOW !!