Recycled ceramic slurry is produced by a method including the steps: dissolving the waste material of unfired ceramic in a solvent to form a waste solution; and adjusting a composition of the waste solution to thereby produce the recycled ceramic slurry. The reaction member includes a reaction member base and a coating formed on the reaction member base. A control circuit selects a detection signal indicative of the shortest distance of the detection signals. , an Unmanned Underwater Vehicle, which then passes raw or aggregated information to a user. For each unit, each node can be connected to each other node by a point to point link and to a local switch node for the unit by a point to point link. The drying station includes a heat nozzle configured for applying a uniform drying gas.