Humic acid composite material and preparation method thereof

A compound fertilizer and humic acid technology, which is applied in the directions of ammonium nitrate fertilizer, urea compound fertilizer, ammonium orthophosphate fertilizer, etc., can solve the problems of reducing product quality, rough particles, not easy to dissolve, etc. The effect of the content is not easy to fall off

Inactive Publication Date: 2007-09-26
阴高鹏
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Problems solved by technology

[0006] Chinese patent application: CN1580005A humic acid urea discloses that urea and lignite are mixed and granulated, the appearance is black, the particles are very rough, the lignite is not activated, and it is not easy to dissolve in water
[0007] Chinese patent application: CN1887819A A method for preparing humic acid urea. If the amount of humic acid added is slightly large, or the stirring is uneven or the particle size of humic acid is not fine enough, urea and humic acid will not form a fluid melt, which will easily block the nozzle and stop the vehicle.
[0010] ①The source of humic acid is relatively small, only peat, lignite, and weathered coal, and only part of it is nitro humic acid, ammonium humate and sodium (potassium) humate. accepted by the market
[0011] ②Because humic acid is coated on the outer layer or humic acid is mixed with nitrogen, phosphorus and potassium for granulation, the particles are rough, black, dusty, and can stain hands black. It is not easy to dissolve in water, and a large amount of precipitation occurs. , low intensity
[0012] ③ Humic acid compound fertilizer nutrient ratio is limited
[0013] ④ For the granulation process of humic acid compound fertilizer, disc method and granulation method are used. This type of process is to mix nitrogen, phosphorus, potassium and humic acid together and granulate them through discs or drums. Although the process is simple, but Small scale, slow granulation speed, large return material, large drying energy consumption
Especially the humic acid from the industrial tail liquid contains other organic components that are easy to absorb moisture and are highly viscous. When mixed with other basic fertilizers for granulation, it is easy to stick to the lining of the granulator, and the resulting product is very easy to absorb moisture and deteriorate. , reducing product quality
For large enterprises with large investment and complicated equipment, it is impossible to adopt this kind of process

Method used

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  • Humic acid composite material and preparation method thereof
  • Humic acid composite material and preparation method thereof
  • Humic acid composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] The weathered coal containing humic acid is crushed into 60-200 mesh powder, and dried to obtain humic acid. Then put it into a disc granulator, add 10% clay, sprinkle the surface of the material with clean water and rotate it to granulate to make spherical particles of 0.5-3mm, and put it into the drum after drying. Then put the urea into the melter and melt it into a liquid state at 130-140°C, control the outflow of the molten urea liquid through a flow meter, the concentration is 98%, and spray the outflowing molten urea into a mist at a pressure of 0.15-0.4Mpa It is sprayed on the surface of the humic acid particles rotating in the drum fluidized bed. As the temperature decreases, the molten urea will gradually solidify on the humic acid particles, and the particles will gradually become larger by rotation. After cooling, it is sieved into particles with a diameter of 1mm≤d≤2.5mm and 2.5mm≤d≤5mm, and is packaged to make a product. According to the national standar...

Embodiment 2

[0089] Regenerated humic acid is formed by decomposing lignite and weathered coal through nitric acid oxidation. Nitric acid with a concentration of 10-20%, the ratio of acid to coal is 3:1, the reaction temperature is 80°C, the reaction time is 2-2.5 hours, the amount of washing water is three times that of coal, and the nitrohumic acid is processed with flue gas at 300°C. Airflow drying, time 3-4 seconds to get nitro humic acid, put it into the drum granulator, add 10% clay and 6% zinc fertilizer, sprinkle the surface of the material with water and rotate to granulate to make 0.5-3mm The spherical shape is then dried to obtain humic acid particles. Put it into the drum again, then put the urea into the melter, melt it into a liquid state at 130-145°C, control the outflow of the molten urea mixture through a flow meter, the concentration of the urine is 98%, and the concentration of the urine is 0.15% through the pressure pump. After the pressure of -0.5Mpa is atomized by th...

Embodiment 3

[0091] The monosodium glutamate waste liquid is adjusted to a pH value of about 5.0 with liquid ammonia, concentrated with a three (four) effect evaporator, sprayed and drum granulated to produce 0.5-3mm spherical humic acid particles, and put into the drum. The granules made from MSG waste liquid contain 6-30% of humic acid, 7-22% of nitrogen and 10-50% of organic matter. Then put urea into the melter and melt it into a liquid state at 130-140°C. Control the outflow of the molten urea mixture through a flow meter. The concentration of urine is 98%. After atomization, it is sprayed on the surface of the humic acid particles rotating in the drum fluidized bed. As the temperature decreases, the molten urea will gradually solidify on the humic acid particles, and the particles will gradually become larger through rotation to make humic acid urea particles. Humic acid urea granules are cooled and sieved to obtain granules with diameters of 1mm≤d≤2.5mm and 2.5mm≤d≤5mm, which are p...

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Abstract

The invention discloses a particle-typed composite fertilizer of humic acid and manufacturing method, which consists of dressing and karyosome, wherein the dressing contains nitrogen, phosphor and potassium. The manufacturing method comprises the following steps: graining humic acid; cladding; graining; solidifying fused fertilizer on the particle of humic acid; making the composite fertilizer dissolved into water without falling; fitting for large scale of agricultural product.

Description

Technical field: [0001] The invention relates to a compound fertilizer, in particular to a humic acid compound fertilizer and a preparation method thereof. technical background: [0002] With the international shortage of coal, oil, natural gas and other energy sources, the continuous reduction of phosphate rock resources in my country, and the increasingly serious situation of relying entirely on imports of potash fertilizers, the raw materials of the three major elements of fertilizer nitrogen, phosphorus, and potassium are also in short supply. The utilization rate of conventional fertilizers of nitrogen, phosphorus, and potassium is low, pollutes the environment, and causes soil compaction and fertility decline. Therefore, chemical fertilizer researchers have set their sights on humic acid, a chemical fertilizer raw material that is cheap and will not be exhausted, and can promote the absorption of nitrogen, phosphorus and potassium. In addition, industrial tail liquid i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05F11/02C05C9/00C05C1/00C05C3/00C05B7/00C05D1/02
Inventor 阴高鹏
Owner 阴高鹏
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