A kind of production method for preparing potassium dihydrogen phosphate by-product chrysanthemum special fertilizer

A technology of potassium dihydrogen phosphate and production method, applied in chemical instruments and methods, applications, phosphorus compounds, etc., can solve problems such as cessation, slowing of chrysanthemum growth, soil compaction, etc., and achieve the effect of good absorption rate
CN104310347BInactive Publication Date: 2016-08-31GUIZHOU UNIV +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUIZHOU UNIV
Publication Date
2016-08-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of chemical industry, and especially relates to a method for preparing potassium dihydrogen phosphate and preparing a special fertilizer for chrysanthemum as a byproduct. The temperature and other coefficients of the preparation technology of potassium dihydrogen phosphate from phosphoric acid through a wet process are changed, so the purity of the potassium dihydrogen phosphate product is improved, the N, P and K compounded fertilizer is produced, a filtrate is adjusted to be acidic, and a formaldehyde solution is added to prepare the controlled release compound fertilizer. The method improves the purity of ammonium dihydrogen phosphate, and the produced special fertilizer for chrysanthemum has high absorptivity, can meet the nutrition needs of chrysanthemum in all stages of the growth period of chrysanthemum, greatly increases the output of chrysanthemum, and is an efficient compound fertilizer.
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Description

technical field

[0001] The invention relates to the technical field of chemical industry, in particular to a production method for preparing potassium dihydrogen phosphate by-product chrysanthemum special fertilizer. Background technique

[0002] Potassium dihydrogen phosphate is widely used in almost all types of crops such as various types of economic crops, grain, melons and fruits, vegetables, etc. It has the effect of overcoming the nutrient deficiency caused by the aging and absorption capacity of the root system in the later stage of crop growth. It is a new type of high-concentration phosphorus and potassium two-element compound fertilizer, and it is an efficient phosphorus and potassium compound fertilizer in agriculture. At present, many domestic fertilizer manufacturers are producing potassium dihydrogen phosphate compound fertilizer. The production methods mainly include neutralization method, extraction method, ion exchange method, metathesis method, direct meth...

Claims

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