The Vibration Catalyst is an tool added by Applied Energistics. It smelts any block it is used on. For example, it turns ice into water or iron ore into iron ingots. The Vibration Catalyst is the opposite of the Entropy Accelerator.
The Vibration Catalyst must be charged to be used. It can be charged in an ME Power Relay, or in any other compatible charging block (e.g. an Industrial Craft 2 MFE or Thermal Expansion Energetic Infuser)