Method of recycling silicon component for plasma etching apparatus and silicon component for plasma etching apparatus

A method of recycling a silicon component in a processing chamber of a plasma etching apparatus performing an etching process on a substrate, the method comprising:

• a collecting process of collecting silicon wastes from any one of a silicon component for a plasma etching apparatus and a silicon ingot for a semiconductor wafer;
• a measurement process of obtaining a content of impurity based on an electric characteristic of the collected silicon wastes;
• an input amount determination process of determining an input amount of the silicon wastes, an input amount of a silicon source material, and an input amount of impurity based on the content of impurity obtained in the measurement process and a target value of an electric characteristic of a final product;
• a silicon ingot manufacturing process of manufacturing a silicon ingot by inputting the silicon wastes, the silicon source material, and the impurity based on the input amounts determined in the input amount determination process into a crucible;
• and
• a product manufacturing process of manufacturing the final product having the target value of the electric characteristic using the silicon ingot.