Is it possible to run three phase motor with single phase supply? How?
A variable-frequency drive (VFD) should be preferred over the Steinmetz connection. The Steinmetz connection only allows the motor to work at about 70% of its rated power and produce 20% to 30% of the rated starting torque. I suspect that a rubber mixer will not tolerate that limitation.

A VFD of a current design from a reputable manufacturer will allow most motors to work at full power and produce rated starting torque. Most manufacturers have both variable torque / standard duty models and constant torque / heavy duty models. For a rubber mixer, you should buy the heavy duty model. Most of the well-known international manufacturers of industrial electrical equipment make VFDs.

Single-phase input, three-phase output are only widely available for 230 volt motors rated up to about 3 Hp (2.2 kW). Larger sizes are available, but more difficult to find.