Preparation method of special calcium-magnesium-rich citric acid-soluble phosphate fertilizer for macadamia nuts

Preparation method of special calcium-magnesium-rich citric acid-soluble phosphate fertilizer for macadamia nuts

The invention discloses a preparation method of a special calcium-magnesium-rich citrate-soluble phosphate fertilizer for macadamia nuts, which comprises the following steps: 1) mixing wet-process phosphoric acid sludge acid and low-grade phosphorite with the fineness of 100-200 meshes according to...

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Hauptverfasser: LI YINGYING, MA HANG, LI HENG, SHEN JIANBO, SUN YUCUI, ZONG SHIRONG
Format: Patent
Sprache:chi ; eng
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CHEMISTRY
FERTILISERS
FERTILISERS CHARACTERISED BY THEIR FORM
MANUFACTURE THEREOF
METALLURGY
MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05
MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS
PHOSPHATIC FERTILISERS
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creator LI YINGYING
MA HANG
LI HENG
SHEN JIANBO
SUN YUCUI
ZONG SHIRONG
description The invention discloses a preparation method of a special calcium-magnesium-rich citrate-soluble phosphate fertilizer for macadamia nuts, which comprises the following steps: 1) mixing wet-process phosphoric acid sludge acid and low-grade phosphorite with the fineness of 100-200 meshes according to the mass ratio of (1-1.5): 1, and performing activation reaction at 80-90 DEG C for 45-60 minutes to obtain mixed slurry in which the citrate-soluble phosphorus accounts for 40-60%; 2) curing the mixed slurry obtained in the step 1) at a constant temperature of 45 DEG C for 8-12 hours, taking out, crushing to obtain a cured material, adding a transforming agent, and mixing with the cured material; 3) reacting at normal temperature for 2-5 hours, drying, and crushing to obtain a calcium-magnesium-rich citric acid-soluble phosphate fertilizer product; the macadamia nut compound fertilizer can also be used as a fertilizer to be directly used as a phosphorus source; compared with a method for preparing a calcium magnes
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subjects CHEMISTRY
FERTILISERS
FERTILISERS CHARACTERISED BY THEIR FORM
MANUFACTURE THEREOF
METALLURGY
MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05
MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS
PHOSPHATIC FERTILISERS
title Preparation method of special calcium-magnesium-rich citric acid-soluble phosphate fertilizer for macadamia nuts
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