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Synergistic calcium superphosphate calcium coated fertilizer and preparation method and application thereof

A superphosphate and coating technology, applied in the industrial field of fertilizers, can solve the problem of not using a variety of phosphorus sources, and achieve the effects of improving yield and quality, reducing environmental pollution and improving the ecological environment.

Inactive Publication Date: 2018-10-16
YIDU XINGFA CHEM COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no report on the preparation of synergistic fertilizers using the characteristics of multiple phosphorus sources

Method used

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  • Synergistic calcium superphosphate calcium coated fertilizer and preparation method and application thereof
  • Synergistic calcium superphosphate calcium coated fertilizer and preparation method and application thereof
  • Synergistic calcium superphosphate calcium coated fertilizer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] Preparation of ammoniated superphosphate: pass the superphosphate produced by the sulfuric acid method through a 1mm sieve, collect the superphosphate powder, put it evenly into the rolling drum, and continuously inject ammonia water during the rotation process. After the material is fully reacted, Sealed and stored for 24h.

[0042] Preparation of seaweed extract: Grind the dried seaweed into powder, weigh 20kg of seaweed powder and put it into a volume of 1.5m 3 Add 1000kg of 10g / L potassium hydroxide solution to the reaction kettle, and then stir and hydrolyze it at 50°C for 16 hours to obtain a seaweed extract solution, wherein the content of alginic acid is 1-10g / L.

Embodiment 1

[0044] According to the nutrient absorption law of crops, in combination with the soil nutrient content and the preferred proportioning range in the claims, the preparation of 1000kg synergistic calcium superphosphate coated fertilizer product is as follows:

[0045] (1) Ammonification of calcium superphosphate: pass the calcium superphosphate produced by the sulfuric acid method through a 1mm sieve, take 295kg of superphosphate powder, and put it evenly into the rolling drum, and pour 5kg of ammonia water at a uniform speed during the rotation process, and wait for the material to fully react After that, keep it sealed for 24 hours to obtain 300kg of ammoniated superphosphate.

[0046] (2) In step (1), add urea 50kg, ammonium chloride 100kg, ammonium nitrate 40kg, potassium chloride 60kg successively, iron sulfate 4kg, manganese sulfate 4kg, copper sulfate 1kg, zinc sulfate 6kg, borax 4kg, molybdic acid Ammonium 1kg, fermented chicken manure 200kg, molasses powder 30kg, humic...

Embodiment 2

[0052] (1) Ammonification of calcium superphosphate: Pass the calcium superphosphate produced by the sulfuric acid method through a 1mm sieve, take 445kg of superphosphate powder, and put it evenly into the rolling drum, and pour 5kg of ammonia water at a uniform speed during the rotation process, and wait for the material to fully react After that, keep it sealed for 24 hours to obtain 450 kg of ammoniated superphosphate.

[0053] (2) In step (1), add urea 60kg, ammonium chloride 80kg, ammonium nitrate 20kg, potassium chloride 60kg successively, iron sulfate 4kg, manganese sulfate 4kg, copper sulfate 1kg, zinc sulfate 6kg, borax 4kg, molybdic acid Ammonium 1kg, fermented chicken manure 90kg, molasses powder 20kg, humic acid 10kg, hydroxymethyl cellulose 30, bentonite 40kg, rolling granulation, sieving to obtain 1-4.75mm particles, namely 430kg of fertilizer core.

[0054] (3) Get 20kg of urea solution, 20kg of organic phosphorus, 10kg of ammonium polyphosphate, and 10kg of ph...

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Abstract

The invention discloses synergistic calcium superphosphate calcium coated fertilizer and a preparation method and application thereof, and belongs to the field of fertilizer application. The coated fertilizer comprises a fertilizer core and a coating layer. The preparation method comprises the steps of: performing ammoniation on powdery calcium superphosphate in a sealed roller, adding a large amount of nutrient elements, trace amount of nutrients, fermenting organic matter and a solid binder sequentially, performing granulation through rolling so as to form the fertilizer core, then sprayinga mixed solution containing a coating agent, organic phosphorus, ammonium polyphosphate and phosphorous acid to the surface of the fertilizer core uniformly by using a spray gun in a rotary drum coating machine, performing preliminary drying, spraying a mixed solution containing a plant growth regulator, seaweed extract and microbial metabolites, and performing sufficient drying so as to form thegranular coated fertilizer. The produced coated fertilizer contains a plurality of phosphorus sources and a plurality of functional substances, growth of roots and stress resistance of crops can be improved obviously, meanwhile, the coated fertilizer has the functions of quick acting and slow acting, and the utilization efficiency of the nutrients can be improved obviously.

Description

technical field [0001] The invention relates to the industrial field of fertilizers, in particular to a preparation method and application of a synergistic calcium superphosphate coated fertilizer. Background technique [0002] Calcium superphosphate is an important phosphate fertilizer variety in my country. With the emergence of high-concentration phosphate fertilizer, the production and sales of superphosphate are showing a downward trend. The reasons for this trend are as follows: First, superphosphate products contain 1-5% free acid, and long-term application of superphosphate products can easily cause soil acidification, compaction, and air permeability reduction. Secondly, after the phosphate ions in superphosphate are applied to the soil, they quickly react with divalent or trivalent metal cations in the soil, resulting in lower solubility and reduced effectiveness. In addition, calcium superphosphate does not contain nutrients such as nitrogen and potassium except ...

Claims

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Application Information

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IPC IPC(8): C05G3/00A01C21/00
CPCA01C21/00C05B1/02C05G3/00C05G5/30C05B7/00C05B15/00C05B17/00C05C1/00C05C3/00C05C9/00C05D1/02C05D9/00C05D9/02C05F3/00C05F5/006C05F11/00C05F11/02C05F11/08
Inventor 陈应波田荣华黄本波袁玮阮长城汪凤玲李庆忠卢波斯沈宏
Owner YIDU XINGFA CHEM COMPANY
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