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Method for improving nutrient utilization rate of calcium magnesium phosphate fertilizer

A technology of calcium magnesium phosphate fertilizer and utilization rate, applied in the direction of phosphate fertilizer, calcium fertilizer, application, etc., can solve the problems of application limitation, difficult to control the dosage, etc., and achieve the effect of high cost performance, low cost and strong growth.

Inactive Publication Date: 2022-01-21
HUBEI FORBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above activated calcium magnesium phosphate fertilizers can improve the phosphorus utilization rate of calcium magnesium phosphate fertilizers, but humic acid is similar to auxin, which is promoted by low concentration and inhibited by high concentration. In the process of use, its dosage is difficult to control
The possible environmental risks of other chemical components in industrial waste except humic acid are also limited in application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc.

[0019] 2) Grinding the concentrated pulp is added to a grinding machine with calcium-magnesium phosphate fertilizer, and the slurry is added by 10% of calcium magnesium phosphate fertilizer weight, and the grinding time is 30 min;

[0020] 3) The mixture after the grinding is filtered, and the solid-liquid separation is separated; the solid material obtained after the separation is placed at room temperature, and the air is maintained at room temperature, which is a low cost, cost-effective nutrient high utilization. Calcium Magnesium phosphate fertilizer.

[0021] Calcium magnesium phosphate fertilizer produced by Example 1 of the present invention, the phosphorus content of the crop has increased by 60%, and the growth is strong.

Embodiment 2

[0023] 1) Concentrate the tail mine slurry produced by the phosphite whitening flotation, and the concentration of the slurry mass after concentration is 75%;

[0024] 2) Grinding the concentrated pulp is added to a polishing machine with calcium-magnesium phosphate fertilizer, and the slurry is added by 15% of calcium magnesium phosphate fertilizer weight, and the grinding time is 45min;

[0025] 3) The mixture after the grinding is filtered, and the solid-liquid separation is separated; the solid material obtained after the separation is placed in a stable state, and the air is heated to 65 ° C with the flue gas, which is a low cost, cost performance. Calcium magnesium phosphate fertilizer with high utilization rate.

[0026] Calcium magnesium phosphate fertilizer produced by Example 2 of the present invention is carried out, and the phosphorus content of the crop has increased by 68%, and the growth is strong.

Embodiment 3

[0028] 1) EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc

[0029] 2) Grinding the concentrated pulp is added to a grinder placed in calcium magnesium phosphate fertilizer, and the slurry is added 20% calcium magnesium phosphate fertilizer weight, the grinding time is 60 min;

[0030] 3) The mixture after the grinding is filtered, separated by solid-liquid; the solid material obtained after the separation is placed in a room temperature, and the air is heated to 75 ° C for drying, which is a nutrient with low cost and cost-effective nutrients. High utilization rate calcium magnesium phosphate fertilizer.

[0031] Calcium magnesium phosphate fertilizer produced by Example 3 of the present invention was carried out, and the phosphorus content in crops was increased by 80%, and the growth was vigorous.

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PUM

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Abstract

The invention provides a method for improving the nutrient utilization rate of a calcium magnesium phosphate fertilizer, the method is characterized by comprising the following steps: adding tailing pulp generated by whitening flotation of concentrated phosphogypsum into a calcium magnesium phosphate fertilizer in proportion, grinding and drying to obtain the calcium magnesium phosphate fertilizer. The calcium magnesium phosphate fertilizer prepared by the method is in an activated state, can be quickly and stably released when being applied to soil, can reduce fixation of the soil, and is quick and lasting in fertilizer efficiency, so that the utilization rate of the nutrients is remarkably improved. When the calcium magnesium phosphate fertilizer produced by the method is used for a pot experiment, the phosphorus content in crops is increased by 60-80%, and the crops grow vigorously. The method is low in cost, high in cost performance, free of any environmental risk and capable of improving the nutrient utilization rate of the calcium magnesium phosphate fertilizer. The method is low in cost and simple in process, makes up for the difference between the calcium magnesium phosphate fertilizer and the high-concentration phosphate fertilizer in the phosphorus utilization rate, not only develops the application prospect of low-grade phosphorite in China, but also provides a new way for full utilization of phosphogypsum.

Description

Technical field [0001] The present invention belongs to the field of phosphorus chemical applications, and in particular, there is a method of increasing calcium magnesium phosphate fertilizer utilization. Background technique [0002] In agriculture, phosphate fertilizer plays an important role in the fertilizers. Most cultivated land is seriously deficient, 80% of phosphate resources for phosphate fertilizer production, how to efficiently use the total amount of the total number of low-grade phosphate resources, which is related to the global and agricultural sustainable development of the world phosphorus resource strategy. [0003] Conventional phosphate fertilizer production of calcium phosphate, calcium phosphate, phosphate fertilizer, ammonium phosphate, etc. One of the main reasons. Water-soluble phosphorus can form insoluble precipitates with aluminum, iron and manganese ions in the soil, resulting in further decrease in phosphate fertilizer utilization. The current phos...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/40
CPCC05B13/02C05G3/00C05G3/40C05B17/00C05D3/02
Inventor 王仁宗左大学刘裕
Owner HUBEI FORBON TECH