Method for preparing organic coating porous granules for fish feed or assorted feed aid using blood of livestock and clay minerals

Abstract

The present invention relates to a method for preparing granules for a fish feed or an assorted feed aid, and more particularly, a method for preparing organic coating porous granules for a fish feed or an assorted feed aid using the blood of livestock and clay minerals. The present invention is to provide granules for a fish feed or an assorted feed aid, wherein the granule contains useful minerals, such as zeolite and bentonite, suitable to be used for a feed, and includes an organic coating layer mainly composed of proteins formed on a surface of the granule by using the blood (let blood) of livestock, so that the time while water infiltrates into pores inside the granule mainly composed of inorganic substances is delayed, thereby obtaining having excellent fluidity.

1 . A method for preparing organic coating porous granules for a fish feed or an assorted feed aid using the blood of livestock and clay minerals, the method comprising:
 a first mixing step of preparing plural clay minerals including a zeolite and a bentonite and then pulverizing, calcining, and mixing them respectively, thereby preparing a powder mixture;   a second mixing step of preparing the blood of livestock, and then mixing the blood of livestock with the powder mixture by pulverizing, thereby preparing a fluid colloidal slurry;   a molding step of jetting the fluid colloidal slurry prepared in the second mixing step at a high pressure in a granulator with an inner temperature of 130-400° C., thereby preparing granules including a granule layer having a porous structure and an organic coating layer formed outside the granule layer to wrap the granule layer; and   cooling the molded granules.   
     
     
         2 . A method for preparing organic coating porous granules for a fish feed or an assorted feed aid using the blood of livestock and clay minerals, the method comprising:
 a first mixing step of heating a zeolite ore powder to a temperature of 400 -950° C. to prepare 100 parts by weight of the zeolite ore powder and preparing 12-60 parts by weight of bentonite based on 100 parts by weight of zeolite, followed by mixing, thereby preparing a powder mixture;   a second mixing step of preparing the blood of livestock, and then mixing the blood of livestock with the powder mixture at a weight ratio of 1 : 0.2-2.0, followed by pulverizing, thereby preparing a fluid colloidal slurry;   a molding step of jetting the fluid colloidal slurry prepared in the second mixing step through a nozzle at a jet pressure of 7.0 to 13.0 kg/cm 2  in a granulator with an inner temperature of 130-400° C., thereby preparing granules having an average diameter of 0.1-3 mm and including a granule layer having a porous structure and an organic coating layer formed outside the granule layer to wrap the granule layer; and   cooling the molded granules.   
     
     
         3 . The method of  claim 2 , wherein the first mixing step further comprising steps of heating a macsumsuk ore powder to a temperature of 800-1,100° C. to prepare 40-60 parts by weight of the macsumsuk ore powder based on 100 parts by weight of the zeolite and heating a shell powder to 850-950° C. to prepare 0.5-1.1 parts by weight of the shell powder based on 100 parts by weight of zeolite. 
     
     
         4 . The method of  claim 1 , wherein before the molding step, one to three selected from a dispersant, a pH adjuster, and a defoamer are added. 
     
     
         5 . The method of  claim 4 , wherein the fluid colloidal slurry prepared in the second mixing step has a concentration of 30-50 wt %, a pH value of 7.0-9.5, and a viscosity of 300-1,550 cps. 
     
     
         6 . An organic coating porous granule for a fish feed or an assorted feed aid using the blood of livestock and clay minerals,
 wherein the organic coating porous granule is prepared by the method of  claim 1 ,   wherein the organic coating porous granule comprises: a granule layer containing zeolite and bentonite, and having a porous structure; and an organic coating layer wrapping an outside of the granule layer, and containing proteins remaining after the evaporating of moisture in the blood, and   wherein the organic coating porous granule has a density of 7.0-1.22 g/cm 3 , a specific surface area of 25-65 m 2 /g, and a porosity of 47-62%.   
     
     
         7 . The method of  claim 2 , wherein before the molding step, one to three selected from a dispersant, a pH adjuster, and a defoamer are added. 
     
     
         8 . The method of  claim 7 , wherein the fluid colloidal slurry prepared in the second mixing step has a concentration of 30-50 wt %, a pH value of 7.0-9.5, and a viscosity of 300-1,550 cps.