Patent ID: 8486262

Claim:
An eco-resource slag effective utilization system for neutralizing a harmful-substance-containing unused slag to allow the same to be used as an eco-resource filter medium, the eco-resource slag effective utilization system comprising: a first step of kneading predetermined proportions of a non-recyclable harmful-substance-containing unused slag selected from by-product slags produced during the refining of a metal such as iron, copper, or aluminum from an ore, a porcelain clay for ceramics, and a mineral clay for ceramics, such as a quartz powder or an alumina powder, thereby forming a clay material with a suitable size; a second step of burning the clay material in a burning oven for ceramics at a predetermined temperature for a predetermined period of time so that a liquid glaze can sufficiently penetrate into the inner region of the clay material, thereby forming a biscuit clay material; a third step of applying, to the biscuit clay material formed in the second step, a liquid glaze produced by kneading a powder made from a crushed special natural stone with a glaze for ceramics in a predetermined ratio followed by aging; a fourth step of penetrating the liquid glaze sufficiently into the inner region of the biscuit clay material, thereby making a solid matter; a fifth step of subjecting the solid matter impregnated with the liquid glaze to high-temperature burning in a burning oven for ceramics again at a predetermined temperature for a predetermined period of time, so that a harmful component contained in the unused slag is melted and enclosed in a vitreous material, thereby forming a vitreous filter medium made of a vitreous solid matter capable of purifying and restoring contaminated or polluted water; and a sixth step of installing the filter medium formed in the fifth step underwater in a contaminated water area to purify water and revive normal water.