Silicon-calcium-potassium-sulfur fertilizer taking fly ash as matrix and preparation method thereof

A technology of fly ash and silicon-calcium-potassium, applied in the field of silicon-calcium-potassium-sulfur fertilizer and its preparation, can solve the problems of single nutrient and low nutrient utilization rate, achieve lower reaction temperature, convenient material acquisition, high application value and market promotion potential effect

Inactive Publication Date: 2020-11-10
杭州石炭纪环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] One of the purposes of the present invention is to provide a silicon-calcium-potassium-sulfur fertilizer with fly ash as the substrate, to solve the shortcomings of low nutrient utilization rate and single nutrient in existing fertilizers

Method used

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  • Silicon-calcium-potassium-sulfur fertilizer taking fly ash as matrix and preparation method thereof

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Embodiment 1

[0038] Using this process to produce silicon-calcium-potassium-sulfur fertilizers, the process flow is as follows: figure 1As shown, the raw material compatibility (in parts by mass) used is: 20 parts of fly ash, 5 parts of sulfur powder, 30 parts of slaked lime, and 8 parts of potassium hydroxide. The process flow is as follows: First, dissolve the sulfur powder into water according to the solid-to-liquid ratio of sulfur powder mass: water volume = 1:3, add slaked lime (calcium hydroxide) and potassium hydroxide and stir together, and heat the water temperature to 67°C. Stir at a speed of 60r / min so that the sulfur powder is completely dissolved in water, then add fly ash, continue to stir until the material is completely uniform, take out the material, then dry it to a moisture content of 5%, cool down, and granulate into granules Silicon calcium potassium sulfur fertilizer with a diameter of 0.5mm, packaged. The hydrothermal process, especially in an alkaline environment, ...

Embodiment 2

[0041] The material compatibility (in terms of mass percentage) for producing silicon-calcium-potassium-sulfur fertilizer by adopting this process is: 47% of fly ash, 10% of sulfur powder, 33% of slaked lime, and 10% of potassium hydroxide. The process flow is as follows: first, dissolve the sulfur powder into hot water according to the solid-to-liquid ratio of sulfur powder mass: water volume = 1:5, then add slaked lime (calcium hydroxide) and potassium hydroxide, heat the water to 30°C, and Stir at a speed of 120r / min to completely dissolve the sulfur powder, then add fly ash, continue to stir at a speed of 120r / min until the material is uniform, take out the material and dry it to a moisture content of 9%; then granulate and process into Particles with a particle size of about 1.5mm are silicon-calcium-potassium-sulfur fertilizers, which can be packaged to make mineral compound fertilizers. Among them, through the third-party component inspection, it is known that the effec...

Embodiment 3

[0043] The raw material compatibility (in parts by mass) used to produce silicon-calcium-potassium-sulfur fertilizer through this process is: 80 parts of fly ash, 50 parts of sulfur powder, 45 parts of slaked lime, and 12 parts of potassium hydroxide. The process flow is as follows: first, dissolve the sulfur powder into hot water according to the solid-to-liquid ratio of sulfur powder mass: water volume = 1:4, then add slaked lime and potassium hydroxide, then heat the water temperature to 80°C at 30r / min Stir at a high speed to make the sulfur powder dissolve completely, then add fly ash, continue to stir at a speed of 30r / min until the material is uniform, take out the material and dry it to a moisture content of 3%; then granulate and process it into a particle size of about The 3.5mm pellets are Si-Ca-K-S fertilizers, which can be packaged to make mineral compound fertilizers. Among them, through the third-party component inspection, it is known that the effective nutrien...

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Abstract

The invention relates to the technical field of chemical fertilizer preparation, in particular to a silicon-calcium-potassium-sulfur fertilizer taking fly ash as a matrix, which is characterized by comprising the following components in parts by mass: 20-80 parts of fly ash, 5-50 parts of sulfur powder, 30-45 parts of calcium hydroxide and 8-12 parts of potassium hydroxide.The invention also relates to a preparation method of the fertilizer, which is characterized by comprising the following steps: sequentially adding sulfur powder, calcium hydroxide and potassium hydroxide into hot water, carrying out hydrothermal activation, and stirring until the sulfur powder is completely dissolved to form a mixture A; then adding fly ash into the mixture A and stirring to form a mixture B; and finally, drying the mixture B until the water content is 3-9%, cooling and granulating. The fertilizer is weakly alkaline, contains complete nutritional components such as silicon, calcium, potassium and sulfur, can be used for adjusting the physicochemical properties of acid soil and improving the level of medium trace elements to achieve the purpose and effect of balanced fertilization, and has higherapplication value and market popularization potential. The preparation process is simple, raw materials are convenient to obtain, and cost is low.

Description

【Technical field】 [0001] The invention belongs to the technical field of fertilizer preparation, and in particular relates to a silicon-calcium-potassium-sulfur fertilizer with fly ash as a matrix and a preparation method thereof. 【Background technique】 [0002] Fly ash is a highly dispersed aggregate of fine particles, which is the fly ash collected from the flue of the combustion furnace, pulverized coal furnace or other burners after the coal is burned at about 1300 °C. Fly ash is mainly composed of SiO 2 、Al 2 o 3 , Fe 2 o 3 , CaO, MgO, K 2 O, Na 2 O, SO 3 And the unburned organic matter composition, also contains As, Cu, Zn, Cd, Cr, Ge, Hg and other trace elements. The particle size distribution of most fly ash is similar to that of silt, with particle sizes ranging from 1 μm to hundreds of microns, but usually smaller than 75 μm. [0003] China is a country with large coal resources in the world, and it is also the world's largest coal producer and consumer. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/80C05G5/12
CPCC05D1/00C05G3/00C05G3/80C05G5/12C05D3/00C05D9/00
Inventor 陈良
Owner 杭州石炭纪环保科技有限公司
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