Method of manufacturing germanium-containing solution from yellow soil

Abstract

The present invention relates to a method of manufacturing germanium-containing solution from yellow soil distributed on the earth's surface, with high efficiency and in environmental-friendly and economical manners. The method comprises forming clods by clumping the yellow soil including the earth from a fireplace; drying the clods of the soil at room temperatures for more than 24 hours or by heating them; heating the clods of the soil to red heat at 750 to 930° C. for 30 to 60 minutes; dipping the red-heated clods of the soil in water to extract oxidized germanium; and filtering the aqueous solution including the clods of the soil.

1 . A method of manufacturing a germanium-containing solution from yellow soil comprising: 
 forming clods by clumping the yellow soil including earth from a fireplace;    drying the clods of the soil at room temperatures for more than 24 hours or by heating them;    heating the clods of the soil to red heat at 750 to 930° C. for 30 to 60 minutes;    dipping the red-heated clods of the soil in water to extract oxidized germanium in a solution; and    filtering the solution including the clods of the soil to produce a germanium-containing solution.    
   
   
       2 . The method of manufacturing germanium-containing solution from yellow soil as claimed in  claim 1 , wherein concentration of germanium in the germanium-containing solution is adjusted by varying an amount of the red-heated clods of the soil to be dipped in water.