NOVELTY - A saturated steam or heated steam and filtered and smashed garbage are mixed and separated into solid and liquid portions. The screened material is hydrolyzed to dissolve heavy metal. The aqueous solution of sulfuric acid is supplied into heavy metal containing solution tank, and iron sulfate is added. The wet solid ferrite is separated and dried. The acidic undissolved substance of foreign material and humic acid, and an aqueous alkali are mixed. The concentrated sterilized liquid and humic acid substance are mixed and spray-dried to obtain organic-fertilizer raw material.    USE - Method used for recycling garbage.    ADVANTAGE - The method enables recycling of garbage efficiently and economically, without air pollution, greenhouse gas and heavy metal contamination.    DETAILED DESCRIPTION - Garbage is filtered to size of 300 mm or more. The garbage is smashed to obtain garbage with size of 20 mm or less. The smashed garbage is supplied to a sterilizing tank. A saturated steam or heated steam having temperature of 120 degrees C and pressure of 0.2 MPa or more is supplied for 2-4 hours to the sterilizing tank to remove microbes in the garbage. The garbage is separated into solid and liquid portions. The solid portion is filtered by a sieve having screen holes of 10-15 mm. The screened material is supplied into a water dissolution tank, and aqueous solution of sulfuric acid having content of 6-10 times of screened material. The mixture is hydrolyzed for 1-3 hours to dissolve heavy metal in screened material. The concentration of aqueous solution of sulfuric acid is 2-5%. The acidic undissolved substance containing foreign material and humic acid are separated by a centrifuge. The rotation speed of centrifuge is 2000-6000 rotations per minute. The aqueous solution of sulfuric acid is supplied into heavy metal containing solution tank and processed. To the mixture, iron sulfate with content of 10-20 times with respect to heavy metal is added. The pH is adjusted to 8-9. Oxidation reaction is carried out at 50-90 degrees C for 20 minutes-2 hours using pressurized air generated by an air compressor to obtain wet solid ferrite containing heavy metal. The content of air is 2-6 times with respect to content of solution. The wet solid ferrite is separated using centrifuge and dried by hot air at 150 degrees C or more to obtain solid ferrite having humidity of 2-5%. The solid ferrite is cooled. The solid ferrite has heavy metal content of 90% or more. The acidic undissolved substance containing foreign material and humic acid is supplied to a dissolving tank and an aqueous alkali with concentration of 2-5% is added and mixed for 0.5-3 hours at rotation speed of 20-100 rotations per minute. The content of aqueous alkali is 4-8 times respect to the content of solid. The pH of the dissolving mixture is adjusted to 8-10, to completely dissolve the humic acid, and to separate foreign material. The aqueous dissolved material is neutralized by dissolving in 2-8% aqueous solution of sulfuric acid. The neutralization process is carried out by controlling the pH to 1-5. The bamboo wood substance, sand substance, glass substance and plastic substance which are sieved from garbage are separated. The bamboo wood substance is smashed to bamboo wood powders having size of 0.1-1 mm and 60-200 mesh. The bamboo wood substance is separated and water-washed to separate plastics. The dried plastic is smashed into plastic powder of 20-100 mesh. The sand substance, glass substance and ceramic substance are recycled and used as construction material. The sterilized liquid is concentrated solution with solid (20-60%), and mixed with humic acid substance at 150-300 degrees C and spray-dried to obtain organic-fertilizer raw material containing an active organic material of pentose and hexose, and an inactive organic material of humic acid.