Dear all,

Rule of thumb for tyre migration calculation is D x Phi

Where : D kiln diameter in meter

              phi: 3.14 or 22/7

So, for kiln with D 4.15, the tyre migration should be more less 13 mm

BR,

Sangia

Dear  Mr rama rao

Attached is the notes on the kiln creep and air gaps from Phillips kiln services for your  reference and studyplease.