Patent ID: 7017753

Claim:
A method of separating heavy materials in garbage from light materials in garbage and classifying the heavy materials in garbage for collection, comprising the steps of: taking advantage of water as a means for carrying floated garbage and submerged garbage and sinking the heavy materials in garbage at different elevations in the water container having a water surface level; removing the light materials in garbage and the heavy materials in garbage from the water container wherein the light materials in garbage and the heavy materials in garbage at different elevations in the water container are continuously removed respectively so as to separate the heavy materials in garbage from the light materials in garbage, and wherein the water container has an outlet opening positioned partially above the water surface level so as to allow floated garbage to move through the outlet opening; and classifying the heavy materials in garbage prior to collection wherein a separation of different types of the heavy materials in garbage based on size, metal, and non-metal is performed to classify the heavy materials in garbage for respectively collecting, wherein the step of classifying the heavy materials in garbage prior to collection comprises the sub-steps of: separating different types of the heavy materials in garbage by passing through a screen mechanism having a plurality of meshed openings of different sizes to sift out different sized articles in the heavy materials in garbage for collection; activating a magnetic conveyor to attract metal articles in the heavy materials in garbage for collection; and collecting remained large non-metal articles in the heavy materials in garbage, and wherein the meshed openings of the screen mechanism are adapted to permit an AA 1.5V cell to pass through so as to collect the cells as the heavy materials in garbage pass through the screen mechanism.