Process for preparing a fertiliser

Abstract

A process for preparing a micronutrient-enriched phosphate-based fertiliser is disclosed. An aqueous fertiliser mixture comprising phosphoric acid and / or phosphate rock is prepared and optionally granulated in granulator unit. The pH of the fertiliser mixture is measured and controlled such that the pH is maintained within a predefined range.

Description

field of invention [0001] The present invention provides a method for the preparation of micronutrient-rich phosphate-based fertilizers. Background of the invention [0002] Micronutrients include zinc, boron, copper, iron, chlorine, molybdenum, and manganese, which are necessary for plant growth, but only in very small amounts. Micronutrients can be incorporated into fertilizer formulations, but there are a number of challenges associated with the effective incorporation of micronutrients. Incorporating micronutrients into compost piles results in low solubility of the micronutrients, making them less readily available to plants once applied to the soil. Applying micronutrients to fertilizers can lead to loss of micronutrients through abrasion. Fertilizer blends consist of small fractions of micronutrient pellets or granules mixed in one or more fertilizers, resulting in poor spatial distribution of the micronutrients, resulting in uneven application of the micronutrients...

AI Technical Summary

Problems solved by technology

Incorporating micronutrients into compost piles results in low solubility of micronutrients, making them less readily available to plants once applied to the soil

Applying micronutrients to fertilizers can lead to loss of micronutrients through abrasion

Blended fertilizers consist of small fractions of micronutrient pellets or granules mixed in one or more fertilizers, resulting in poor spatial distribution of the micronutrients, resulting in uneven application of the micronutrients to the soil

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