	US 11,999,663 B2
	Liquid organic nutrient for agricultural use and production method thereof
Francisco Zamora Rea, Guadalajara (MX); and Jose Luis Santos Salazar, Tlaquepaque (MX)
Appl. No. 16/964,261
Filed by TECNICA MINERAL S.A. DE C.V., Tlaquepaque (MX)
PCT Filed Feb. 14, 2018, PCT No. PCT/MX2018/000013 § 371(c)(1), (2) Date Jul. 23, 2020, PCT Pub. No. WO2019/147115, PCT Pub. Date Aug. 1, 2019.
Claims priority of application No. 2018/001078 (MX), filed on Jan. 25, 2018.
Prior Publication US 2021/0040004 A1, Feb. 11, 2021
Int. Cl. C05C 11/00 (2006.01); C01B 33/40 (2006.01); C05D 3/02 (2006.01); G01N 5/04 (2006.01); G01N 9/02 (2006.01)

CPC C05C 11/00 (2013.01) [C01B 33/40 (2013.01); C05D 3/02 (2013.01); G01N 5/045 (2013.01); G01N 9/02 (2013.01); G01N 2009/022 (2013.01)]

15 Claims

1. An organic nutrient for agricultural use, consisting of:

i) calcium carbonate consisting of particles having an average size of less than 1 micron and a relative neutralizing power of 100%;

ii) at least one humic substance capable of releasing nitrogen, phosphorous and potassium having a N-P-K value of 1-0-19;

iii) attapulgite (hydroxiphyllosilicate of aluminum and magnesium (HPAM)) with a gelling capacity and a relative neutralizing power of 30%;

iv) water used as a diluent;

v) wherein the particle size distribution of the calcium carbonate is dp₅₀=0.75 microns to 0.70 microns, the calcium carbonate has a purity of >99% and the calcium carbonate is present in a quantity of no less than 65% of the liquid organic nutrient;

vi) wherein the attapulgite is in a quantity of 0.1% to 0.5% of the liquid organic nutrient;

vii) wherein the humic substance has a purity of over 90% and is present in a quantity of approximately 1% to 5% of the liquid organic nutrient; and

viii) wherein the organic nutrient is a liquid.

4. A method for producing the liquid organic nutrient for agricultural use according to claim 1, wherein said method comprises the steps of:

i) mixing at least one humic substance, according to claim 1, with water and stirring at 1300 revolutions per minute (rpm) for a sufficient amount of time to achieve complete incorporation, homogenization and humectation;

ii) adding calcium carbonate to the mixture resulting from step i) and stirring at 1300 revolutions per minute (rpm) for a sufficient time to achieve complete dispersion;

iii) grinding the mixture resulting from step ii) in a vertical pearl mill using a batch system for a sufficient amount of time to completely grind the mixture until the particles have an average particle size of less than 1 micron;

iv) adjusting the percentage of solids in the mixture resulting from step iii) to an initial value indicated in a nutrient formula, by determining the volume, density and final percentage of solids of the dispersion obtained in step iii);

v) adding hydroxiphyllosilicate of aluminum and magnesium (attapulgite) and stirring at 1300 revolutions per minute (rpm) to achieve complete dispersion;

vi) recovering the particles of less than 1 micron from the product of step v by passing the product of step v through a 325-mesh sieve to retain any particle with a size greater than 1 micron; and

vii) recovering the liquid organic material.

14. A method to improve agricultural soils, comprising the steps of:

applying the liquid organic nutrient according to claim 1 to the soil.