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A method for preparing ammonium zeolite by using analcime powder

Analcime and ammonium-type technology, applied in the fields of application, ammonium salt fertilizer, agricultural gas emission reduction, etc., can solve the problems of long time, no industrial use value, large material consumption, etc., achieve mild and controllable conditions, and be easy for industrial implementation , the effect of efficient use

Active Publication Date: 2021-04-27
昊青薪材(北京)技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method consumes a lot of materials, takes a long time, and uses dangerous and explosive reagent ammonium nitrate, which obviously has no industrial application value

Method used

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  • A method for preparing ammonium zeolite by using analcime powder
  • A method for preparing ammonium zeolite by using analcime powder
  • A method for preparing ammonium zeolite by using analcime powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The chemical composition analysis result (w B %)

[0025]

[0026] (1) The chemical composition analysis results of the analcime powder are shown in Table 1.

[0027] (2) The operation steps are attached figure 1 As shown, accurately weigh 3.00g of analcime powder and mix with 50mL NH 4 + Ammonium carbonate solution with a concentration of 5.0 mol / L was mixed to prepare a slurry. The slurry was transferred into a polytetrafluoroethylene-lined reactor for hydrothermal crystallization at 130°C for 24 hours. After the reaction is completed, filter to obtain an ammonium zeolite filter cake. The filter cake is dried at 90±5°C for 12 hours to make ammonium zeolite powder. The main component of the product (referred to as NAN-1) is SiO 2 、Al 2 o 3 and NH 4 + , NH 4 + The content is 19%. If all the Na in the analcime composition + By NH 4 + Alternative, Theory NH 4 + The content is 9.2%. It can be seen that the exchanged NH 4 + In addition, some of them ...

Embodiment 2

[0032] The chemical composition analysis result (w B %)

[0033]

[0034] (1) The chemical composition analysis results of the raw material analcite powder are shown in Table 3.

[0035] (2) Accurately weigh 10.00g of analcime powder and 50mL NH 4 + Ammonium bicarbonate solution with a concentration of 5.0 mol / L was mixed to prepare a slurry. The slurry was transferred into a polytetrafluoroethylene-lined reactor for hydrothermal crystallization at 110°C for 12 hours. After the reaction is completed, filter to obtain an ammonium zeolite filter cake. The filter cake is dried at 90±5°C for 12 hours to make ammonium zeolite powder. Product NH 4+ The content is determined by Nessler spectrophotometry to be 10.82%, and the nitrogen content is 8.42%. The chemical composition analysis results of the product (referred to as NAN-2) are shown in Table 4, wherein the BaO content was not determined, and the NH 4+ Content 10.82% is not listed in the table, part of the loss on ig...

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Abstract

The invention relates to a method for preparing ammonium zeolite by using analcime powder. The method is to place analcite powder in ammonium carbonate or ammonium bicarbonate solution, carry out hydrothermal reaction at 60-150°C, filter after completion, and dry the obtained solid filter cake at 90±5°C to obtain Zeolite powder loaded with ammonium nitrogen. The powder can be used as a slow-release nitrogen fertilizer or a slow-release fertilizer carrier.

Description

technical field [0001] The invention relates to a method for preparing ammonium-type zeolite by using analcime powder, and the synthesized ammonium-type zeolite can be used as a slow-release nitrogen fertilizer or a slow-release fertilizer carrier. Background technique [0002] Analcime belongs to the feldspar-like minerals and is a hydrous sodium aluminum silicate. Chemical formula: NaAlSi 2 o 6 ·H 2 O. There are many places related to zeolite, which has good adsorption performance, ion exchange performance and catalytic performance. According to this feature, the traditional chemical instant nitrogen fertilizer can be combined with zeolite to prepare zeolite loaded with ammonium nitrogen. If this type of zeolite is applied to the soil, it can realize the slow release of nutrients, that is, slow-release nitrogen fertilizer. At present, the slow-release fertilizers widely used in the market are almost mainly prepared by the organic coating method, which has high produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05C3/00
CPCC05C3/00Y02P60/21
Inventor 刘昶江马鸿文高原姚文贵
Owner 昊青薪材(北京)技术有限公司