Granular medium-trace nutrient element fertilizer and production method thereof

Abstract

The invention relates to a granular medium-trace nutrient element fertilizer and a production method thereof. The granular medium-trace nutrient element fertilizer is prepared from the main materialsas follows: yellow phosphorus tailings, magnesium-containing substances, microelement raw materials and the like. The granular medium-trace nutrient element fertilizer is capable of supplying medium-trace nutrient elements required by crops, the proportion of each element can be adjusted, the particle strength is high, and the fertilizer suitable for mechanically applied and can be rapidly disintegrated after being applied to the soil, so that the fertilizer can be taken as the medium-trace nutrient element fertilizer to be directly applied and can be taken as a raw material of a blended fertilizer so as to supply the medium-trace nutrient elements to the blended fertilizer; the granular medium-trace nutrient element fertilizer is alkaline and has the functions of an acidy soil conditioner; and meanwhile, the production method is one of effective paths for resource utilization of a byproduct, namely yellow phosphorus tailings of a yellow phosphorus enterprise.

Description

【Technical field】 [0001] The invention belongs to the technical field of fertilizer production. More specifically, the present invention relates to a granular medium-micronutrient fertilizer, and also relates to a production method of the granular medium-micronutrient fertilizer. 【Background technique】 [0002] With the rapid development of my country's fertilizer industry in recent decades, the fertilizers invested in agricultural production are mainly nitrogen, phosphorus and potassium macronutrient fertilizers. The input of macronutrient fertilizers is much higher than the world average level. While ensuring high agricultural production, It also brought many problems: on the one hand, because the micronutrient elements in the soil have not been supplemented for a long time, more than 50% of the cultivated land in the country has the problem of lack of micronutrient elements, which not only reduces the utilization rate of macronutrient fertilizers, but also causes On the ot...

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Problems solved by technology

[0002] With the rapid development of my country's fertilizer industry in recent decades, the fertilizers invested in agricultural production are mainly nitrogen, phosphorus and potassium macronutrient fertilizers. The input of macronutrient fertilizers is much higher than the world average level. While ensuring high agricultural production, It also brought many problems: on the one hand, because the micronutrient elements in the soil have not been supplemented for a long time, more than 50% of the cultivated land in the country has the problem of lack of micronutrient elements, which not only reduces the utilization rate of macronutrient fertilizers, but also causes On the other hand, due to the excessive input of a large number of elemental fertilizers and the continuous high yield of agriculture, the acidification of the soil resulted in the decline of the quality of cultivated land

The main components of yellow phosphorus tailings are: 35-40% effective SiO 2 , 40-50% effective CaO, 0.8-1.5% effective MgO, 0.8-2.5% effective P 2 o 5 , is a good source of medium element fertilizers, and at the same time, yellow phosphorus tailings are highly alkaline and also a good acidic soil conditioner, but currently, these yellow phosphorus tailings are mainly used as cement raw materials The use of it fails to reflect its due value. Using it as a raw material for medium and trace element fertilizers can not only greatly improve the benefits of yellow phosphorus enterprises, but also greatly reduce the energy consumption of producing medium and trace element fertilizers using ore as raw materials.

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