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Preparation method of phosphate-coated fertilizer storage ceramisite

A phosphate and ceramsite technology, applied in the field of plant and vegetation fertilizer production, can solve the problems of plant nutrition, plant death, soil compaction, etc.

Inactive Publication Date: 2014-07-16
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the short water storage time of the existing ceramsite, it cannot meet the requirements of greening vegetation in remote mountainous areas or road slopes.
[0005] Most of the commonly used chemical fertilizers are quick-acting fertilizers, which will lose their effect in the soil in a short period of time, and cannot provide nutrients for plants for a long time, and if the chemical fertilizers are applied too much, it will cause soil compaction and even cause plant death

Method used

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  • Preparation method of phosphate-coated fertilizer storage ceramisite

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Embodiment Construction

[0029] 1. Preparation of phosphate-coated fertilizer storage ceramsite:

[0030] 1. Description of raw materials: Phosphorous materials, magnesium materials, and calcium materials are chemical reagents, produced by Tianjin Kemiou Chemical Reagent Co., Ltd. Active light-burned MgO, 325 mesh powder, made from natural magnesium ore by light-fired at 600℃~700℃, produced by Liaoning Haicheng Shijing Qiyang Industrial Co., Ltd. Fly ash, Class I, Class II or Class III fly ash for concrete admixture. Polycarboxylate superplasticizer with a solid content of 50% and a water reducing rate of over 30%, produced by Suzhou Sika Group. The ceramsite is any one of fly ash ceramsite, clay ceramsite, sludge ceramsite or gangue ceramsite, and the particle size of the ceramsite is 10±2mm.

[0031] 2. Production process:

[0032] 1) Dissolve potassium phosphate in water to make a saturated aqueous solution of potassium phosphate.

[0033] 2) Mix water and water reducing agent at a mass ratio o...

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Abstract

The invention discloses a preparation method of a phosphate-coated fertilizer storage ceramisite, relating to the technical field of plant and vegetation fertilizer production. The preparation method comprises the step of coating a phosphorus material, a magnesium material, a calcium material and dry coal ash outside a ceramisite on which potassium phosphate is adsorbed. According to the invention, fertilizer is stored into the ceramisite by sufficiently utilizing a great number of communication holes on the surface of the ceramisite, then, the ceramisite is coated by using phosphate which is not dissolved into water, but is dissolved into acid, when acid rain exists, a ceramisite coating layer is slowly dissolved to release nutrient elements, the fertilizer inside the ceramisite is slowly dissolved out and is supplied to plants after the rainwater is infiltrated into the ceramisite, and part of rainwater is stored into the ceramisite and is released when being drought so as to provide a water source for the growth of the plants.

Description

technical field [0001] The invention relates to the technical field of plant and vegetation fertilizer production. Background technique [0002] For green vegetation in remote mountainous areas or road slopes, artificial fertilization and watering are difficult to maintain. How to make the vegetation soil itself have the ability to store water and fertilizer, and to supply plants continuously for a long time is of great significance to ensure plant growth. Therefore, when designing the composition of greening vegetation soil, how to make the vegetation soil store water and fertilizer for a long time is an important performance to consider. [0003] Zhou Songwei's patent CN101491174A relates to a kind of soil greening that uses a netting fabric layer as a long-term water retention medium to effectively increase the survival rate of plants. [0004] Because ceramsite is a porous material with low density, high cylinder compressive strength and hard shell, it has excellent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 张鸣陈令坤康爱红肖鹏吴正光
Owner YANGZHOU UNIV
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