Components of calcium nitrate, including calcium nitrate based micronutrients and methods of producing calcium nitrate

摘要

1. Characteristic requirement 1: a uniform solid particle, whose characteristic is that it contains at least 50% calcium nitrate by weight calculated as Ca (no.832323) 832222;0% to 10% by weight of ammonium nitrate, potassium nitrate and sodium nitrate; 0.01% to 0.2% by weight of micronutrients, at least one of which is nitrate. Requirement 2: homogeneous solid particles conforming to requirement 1, whose characteristics are spherical particles. Requirement 3: homogeneous solid particles meeting the requirements of items 1 to 2, with the characteristics of 0.01% to 0.2% by weight of zinc. Claim 5: solid particles consistent with any claims 1 to 4,The characteristic also includes at least one micronutrient in the form of an adhesive selected from the EDTA group,N - (hydroxy) - ethyldioxylacetamide (Hedda),Ethanol tetraacetic acid (EGTA),Ethylenediamine-N, n '- bis - (2-hydroxyphenylacetic acid) (eddha),Diethylenediamine-n, n '- di - (2-hydroxy-5-sulfur) Phenylacetyl (eddhs) and diethylphenylvaleric acid (DTPA). D. Claim 19: a method for producing homogeneous fertilizer particles, which is characterized by (a) providing the first aqueous solution, including the dissolution of calcium nitrate, ammonium nitrate and zinc nitrate. The optional EDTA de zinc is sufficient in quantity 1. Obtain an aqueous solution containing 0.01-0.2% zinc by weight;b) heating the first aqueous solution to a temperature above 150 ° C to evaporate a quantity of water and to obtain a second aqueous solution; c) granulating the particles of the second aqueous solution by spraying through at least one nozzle, such that the droplets solidify.