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Fly ash-based soil water-retaining conditioner and preparation method thereof

A water-retaining conditioner, fly ash technology, applied in soil conditioning materials, chemical instruments and methods, other chemical processes, etc., can solve the problems of high equipment cost, high pressure, low production capacity, etc.

Active Publication Date: 2020-01-17
刘建森
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The application number is: CN108239536A, and the name is: a soil conditioner and its preparation method, which is dissolved in lye, and then through the hydrothermal reaction to achieve directional reaction, the silicon in the silicon-rich material is efficiently activated, and a new type of soil seasoning agent with a citrate-soluble silica content of 22-35wt% is prepared; wherein, the solid mixture and lye The mass-to-volume ratio is 1: (10-40) g / ml, and the temperature of the hydrothermal reaction is 100-250°C (corresponding to a pressure of about 0.1MPa-4.0MPa); it can be seen that the solid-liquid ratio is small and the pressure is high. Resulting in low production capacity and high equipment cost

Method used

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  • Fly ash-based soil water-retaining conditioner and preparation method thereof
  • Fly ash-based soil water-retaining conditioner and preparation method thereof
  • Fly ash-based soil water-retaining conditioner and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0069] Such as figure 2 Shown, a kind of preparation method of fly ash-based soil water retention conditioner comprises the following steps:

[0070] S1: Weigh 100kg of fly ash;

[0071] S2: Preheat the fly ash to above 90°C through the powder flow heat exchanger a, wherein the preheating medium is hot water, and the preheated fly ash is transported to the tunnel kiln for static calcination, and the calcination in the tunnel kiln The temperature is 800-1250°C, and the calcination time is controlled within 30-150 minutes. After the calcination is completed, the temperature is lowered to 480-500°C through a grate cooler, and then the powder flow heat exchanger b is used to exchange heat with water, so that the temperature drops to 60°C. In the following, the hot water from the powder flow heat exchanger b can be used in places where hot water is needed, such as rain or heating, and the low temperature water in the heating process can be returned to the powder flow heat exchang...

Embodiment 2

[0076] Such as figure 2 Shown, a kind of preparation method of fly ash-based soil water retention conditioner comprises the following steps:

[0077] S1: Weigh 100kg of fly ash, 60kg of calcium oxide, 20kg of sodium carbonate, and 25kg of potassium carbonate, prepare sodium carbonate and potassium carbonate into an aqueous solution or a standard solution, mix the fly ash and calcium oxide evenly, and then add the prepared aqueous solution or standard solution to obtain fly ash raw meal;

[0078] S2: The fly ash raw meal is preheated to above 90°C through the powder flow heat exchanger a, wherein the preheating medium is hot water, and the preheated fly ash raw meal is transported to the tunnel kiln for static calcination. The calcination temperature in the kiln is 800-1250°C, and the calcination time is controlled within 30-150 minutes. After the calcination is completed, it is cooled to 480-500°C by a grate cooler, and then the powder flow heat exchanger b is used to exchan...

Embodiment 3

[0084] Such as figure 2 Shown, a kind of preparation method of fly ash-based soil water retention conditioner comprises the following steps:

[0085] S1: Weigh 100kg of fly ash, 100kg of calcium oxide, 50kg of sodium carbonate, 50kg of potassium carbonate, sodium carbonate and potassium carbonate to prepare an aqueous solution or a standard solution, mix the fly ash and calcium oxide evenly, and then add the prepared aqueous solution or standard solution to obtain fly ash raw meal;

[0086] S2: The fly ash raw meal is preheated to above 90°C through the powder flow heat exchanger a, wherein the preheating medium is hot water, and the preheated fly ash raw meal is transported to the tunnel kiln for static calcination. The calcination temperature in the kiln is 800-1250°C, and the calcination time is controlled within 30-150 minutes. After the calcination is completed, it is cooled to 480-500°C by a grate cooler, and then the powder flow heat exchanger b is used to exchange he...

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Abstract

The invention discloses a fly ash-based soil water-retaining conditioner and a preparation method thereof, belonging to the technical field of soil water-retaining conditioners. The fly ash-based soilwater-retaining conditioner comprises fly ash clinker and a soil composite mineral type conditioner. The fly ash clinker is prepared from the following components in parts by mass through a calciningprocess, and the mass ratio of fly ash to calcium oxide or calcium carbonate to sodium carbonate to potassium carbonate is 1: (0-1) or (0-1.4): (0-0.5): (0-0.5). Through the water absorption and drainage principle of the generated dicalcium silicate, the effect of keeping moisture in the soil is achieved; the soil composite mineral conditioner is composed of humus soil, humic acid and cured pig manure, and can improve physical, chemical and microbial reactions of soil and increase fertility of the soil.

Description

technical field [0001] The invention belongs to the technical field of soil water-retaining conditioner, and in particular relates to a fly ash-based soil water-retaining conditioner and a preparation method thereof. Background technique [0002] At present, the production of fly ash in my country is increasing year by year. Fly ash is the powder collected from the flue gas of pulverized coal furnace in power plants. The main oxide composition of fly ash is: SiO 2 、Al 2 o 3 , FeO, Fe 2 o 3 , CaO, TiO 2 , MgO, K 2 O, Na 2 O, SO 3 , MnO 2 and so on, in addition to P 2 o 5 Wait. Among them, silicon oxide and titanium oxide come from clay and rock shale; iron oxide mainly comes from pyrite; magnesium oxide and calcium oxide come from their corresponding carbonates and sulfates. [0003] At present, the use of fly ash in China is mainly used as building materials, road construction, filling materials, refractory materials, etc., but due to the cooling of real estate, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C05G3/80C09K107/00
CPCC05D9/02C05F3/00C09K17/40C09K2107/00
Inventor 刘建森毕建杰冯永来
Owner 刘建森
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