ES359094A1 - Improvements introduced in the processes of obtaining an organ-mineral fertilizer complex based on humic acid salts. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements introduced in the processes of obtaining an organ-mineral fertilizer complex based on humic acid salts, essentially characterized by the fact that they obtain fertilizer by practicing the following operations in combination: A) taking as a raw material starting a "compost" obtained from city garbage or waste of plant origin, manure, peat or lignite or a solution of synthetically obtained humates. B) solubilizing by treatment, except in the latter case, the humates and fulvates contained in the raw material, with an aqueous solution of phosphates (mono, bi, tri basic) of sodium, potassium or ammonium, pyrophosphates (sodium, potassium or ammonium) ) ammonium hydroxide, sodium, potassium or ammonium hydroxide or ammonium oxalate and operatively separating the solution from the original material, so that if it is not separated a doughy mass results. C) concentrating in the case of said separation the solution obtained and/or submitting it in another operative phase to a treatment with sulfuric or hydrochloric acid to precipitate the humic acid, the latter being separated to redissolve in a weak alkaline solution (sodium hydroxide, potassium or ammonium). A) adding to the solution obtained with separation and to the paste obtained without separation in which the humic and fulvic acids are in the form of soluble salts, solutions of iron salts (ferrous or ferric), copper, zinc, and manganese, being able to add these salts individually or in combinations of two or more of them, according to the desired final formula, so that, specifically, the ph of the solution is kept constant in an area between 7.5 and 9.5 by previous or simultaneous addition of alkaline solution (sodium, potassium or ammonium hydroxide) and E) by optionally dissolving in the solution or in the resulting paste the necessary salts to complete the mineral composition prefixed for the fertilizer. These salts can be, for example, potassium chloride or sulfate, magnesium chloride or sulfate, potassium or ammonium (mono, bi, tri basic) phosphates, simple or triple superphosphates, potassium, ammonium or sodium nitrate, chloride or ammonium sulfate, and drying the solution or the paste or vice versa. (Machine-translation by Google Translate, not legally binding)