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Preparation method of granular calcium-magnesium-phosphorus fertilizer containing various trace elements

A technology of microelement granules and calcium-magnesium phosphate fertilizer, which is applied to phosphate fertilizers, fertilization devices, fertilizer mixtures, etc., can solve problems such as unsuitability and single fertilizer efficiency of calcium-magnesium-phosphate fertilizers, and achieve balanced nutrients, uniform particle size, and good disintegration performance

Inactive Publication Date: 2020-01-14
HUBEI FORBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure calcium, magnesium, and phosphate fertilizers have a single fertilizer effect and are not suitable for the needs of modern agriculture.
At present, there is no research report on the production of granular calcium magnesium phosphate fertilizers containing various trace elements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Calcium magnesium phosphate fertilizer, zinc sulfate, manganese oxide and sodium borate are used as main raw materials, calcium lignosulfonate is used as binder, and granulated according to the following mass ratio: 75 parts of powdered calcium magnesium phosphate fertilizer, 6 1 part of zinc sulfate, 1 part of manganese oxide, 0.1 part of sodium borate mixed powder as dry material, and 3 parts of calcium lignosulfonate as binder for granulation to produce calcium magnesium phosphate fertilizer with round particles containing various trace elements.

[0011] The calcium magnesium phosphate fertilizer containing various trace elements prepared in this embodiment all contains: calcium, magnesium, phosphorus, zinc, manganese, sodium, sulfur, the product has uniform particle size, smooth surface, and the strength reaches ≥ 3kg / cm 2 , and the disintegration time is ≤1min, and the disintegration rate is ≥95%.

Embodiment 2

[0013] Using calcium magnesium phosphate fertilizer, zinc sulfate, manganese oxide, and sodium borate as main raw materials, together with sodium lignosulfonate as binder, granulate according to the following mass ratio: 89 parts of powdered calcium magnesium phosphate fertilizer, 14 1 part of zinc sulfate, 4 parts of manganese oxide, 1 part of sodium borate mixed powder as dry material, and 7 parts of sodium lignosulfonate as binder for granulation to produce calcium magnesium phosphate fertilizer with round particles containing various trace elements.

[0014] The calcium magnesium phosphate fertilizer containing various trace elements prepared in this embodiment all contains: calcium, magnesium, phosphorus, zinc, manganese, sodium, sulfur, the product has uniform particle size, smooth surface, and the strength reaches ≥ 3kg / cm 2 , and the disintegration time is ≤1min, and the disintegration rate is ≥95%.

Embodiment 3

[0016] Using calcium magnesium phosphate fertilizer, zinc sulfate, manganese oxide, and sodium borate as main raw materials, together with magnesium lignosulfonate as binder, granulate according to the following mass ratio: 82 parts of powdered calcium magnesium phosphate fertilizer, 10 1 part of zinc sulfate, 2.5 parts of manganese oxide, 0.5 part of sodium borate mixed powder as dry material, 5 parts of magnesium lignosulfonate as binder for granulation to prepare round particles of calcium magnesium phosphate fertilizer containing various trace elements.

[0017] The calcium magnesium phosphate fertilizer containing various trace elements prepared in this embodiment all contains: calcium, magnesium, phosphorus, zinc, manganese, sodium, sulfur, the product has uniform particle size, smooth surface, and the strength reaches ≥ 3kg / cm 2 , and the disintegration time is ≤1min, and the disintegration rate is ≥95%.

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Abstract

The invention relates to a preparation method of a granular calcium-magnesium-phosphorus fertilizer containing various trace elements, wherein a calcium-magnesium-phosphorus fertilizer, zinc sulfate,manganese oxide and sodium borate are used as main raw materials, lignosulfonate is used as a binder, the mixed powder of 75-89 parts by mass of powdery calcium-magnesium-phosphorus fertilizer, 6-14 parts by mass of zinc sulfate, 1-4 parts by mass of manganese oxide and 0.1-1 part by mass of sodium borate is used as a dry material, 3-7 parts by mass of lignosulfonate is used as a binder, and granulation is performed to prepare the round-particle granular calcium-magnesium-phosphorus fertilizer containing various trace elements. According to the invention, the prepared granular calcium-magnesium-phosphorus fertilizer containing various trace elements has advantages of uniform particle size, smooth surface, high strength, favorable disintegration property, low cost and balanced nutrients.

Description

technical field [0001] The invention relates to the technical field of calcium-magnesium phosphate fertilizer, in particular to a method for preparing granular calcium-magnesium phosphate fertilizer containing various trace elements Background technique [0002] Calcium magnesium phosphate fertilizer is a raw material prepared from phosphate rock and magnesium silicate minerals. It is melted in an electric furnace, blast furnace or open hearth furnace at 1350-1500 ° C, and the melt is quenched with water to form a glassy material smaller than 2 mm. After drying and grinding, it becomes product. Flux should be added during melting and sintering, and various silicon-containing and magnesium-containing materials such as serpentine. Dolomite, olivine, etc. can be used as flux. The main components include Ca 3 (PO 4 ) 2 , CaSiO 3 , MgSiO 3 . It is a multi-element fertilizer. The aqueous solution is alkaline, which can improve acidic soil. It works well as a base fertilize...

Claims

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Application Information

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IPC IPC(8): C05G3/00
CPCC05B13/02C05G3/00
Inventor 王仁宗
Owner HUBEI FORBON TECH
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