Pelletized fertilizer and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-9284233-B2
Application number	US-201313783716-A
Country	US
Kind code	B2
Filing date	Mar 4, 2013
Priority date	Aug 9, 2012
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

A method for manufacturing a pelletized fertilizer includes the following steps. A water-soluble manure and a colloidal solution are mixed, to form an aqueous solution of a fertilizer, wherein the water-soluble manure is selected from the group consisting of monopotassium phosphate, epsomite, manganous sulfite, boric acid, borax, copper sulfate pentahydrate, white vitriol, ammonium molybdate, urea, ferric ethylenediaminetetraacetic acid and potassium nitrate, the colloidal solution is selected from the group consisting of agar, xanthan gum, shellac, guar gum, natto gum, pectin, synthetic hydrogel and PLGA, and the weight percentage of the colloidal solution in the aqueous solution of the fertilizer is between 1.5 and 15%. The aqueous solution of the fertilizer is added into a water within a temperature range between 0 and 4° C., whereby the aqueous solution of the fertilizer is solidified to the pelletized fertilizer.

First claim

What is claimed is:

1. A pelletized fertilizer comprising:
a colloid comprising a main body and a plurality of voids; and
a water-soluble manure interfused to the main body of the colloid, wherein the colloid is selected from at least one of the group consisting of agar, xanthan gum, shellac, guar gum, natto gum, pectin, and PLGA (poly(lactic-co-glycolic acid)), and the water-soluble manure is selected from at least one of the group consisting of epsomite (MgSO 4 .7H 2 O), manganous sulfite (MnSO 4 .4H 2 O), boric acid (H 3 BO 3 ), copper sulfate pentahydrate (CuSO 4 .5HO 2 ), white vitriol (ZnSO 4 .7H 2 O), ammonium molybdate ((NH 4 ) 6 Mo 7 O 24 .4H 2 O), ferric ethylenediaminetetraacetic acid (Fe-EDTA) and potassium nitrate (KNO 3 ), and
a diameter of the pelletized fertilizer is within a range between 0.3 and 0.5 centimeter.

2. The pelletized fertilizer of claim 1 , wherein the form of pelletized fertilizer is globular shape, water-drop shaped or ellipsoidal shape.

Assignees

• Chunghwa Picture Tubes Ltd
• Chunghwa Picture Tubes Ltd

Inventors

• Kuo Chou-Chiang
• Wu Min-Lun
• Chang Che-Wei

Classifications

• C05D5/00

  Fertilisers containing magnesium (C05D7/00 takes precedence) · CPC title

• C05G3/44 Primary

  for affecting solubility · CPC title

• C05G5/40

  Fertilisers incorporated into a matrix · CPC title

• C05D9/02

  containing trace elements · CPC title

• C05C9/005

  Post-treatment · CPC title