A pilot reported attempting touch and go landing at OZW and began sliding on an ice covered runway. Power was added for takeoff and the pilot later determined after landing at his home base that his propeller had struck an object somewhere.

Narrative

Planned touch and go Runway 31 at OZW. Upon landing; aircraft control was normal and aircraft was at center of runway. Flaps were retracted and full throttle applied. Aircraft immediately started sliding toward the left side of the runway. Throttle was retarded and aircraft was brought to a full stop. Aircraft came to rest in snowy grass to left of runway directly across from Taxiway A2. Self-announced position on Unicom/CTAF frequency. Engine was shut down normally. Limited inspection revealed no damage to gear or struts. Engine was restarted without difficulty; aircraft was taxied across runway to Taxiway A2; run-up checklist was completed; and I departed uneventfully via Runway 31 to home base. Landing was uneventful. Pre-flight prior to the flight had indicated fair braking action at OZW. There was approximately 1/2 inch of snow on the runway and I suspected there was ice underneath. Since I was not doing a full stop landing and did not use brakes; I didn't expect aircraft control on the runway to be so impaired upon throttling up for the takeoff. Upon return to home base; propeller damage was noted; so I suspected that a runway light might have been struck.