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Production method of water-soluble silicon-potassium fertilizer

A production method and water-soluble technology, applied in potash fertilizers, inorganic fertilizers, fertilization devices, etc., can solve the problems of poor discharge of waste acid, serious waste of raw materials, long production cycle, etc., to achieve low production costs, save costs, and reduce emissions Effects of Pollution Problems

Inactive Publication Date: 2018-10-02
GUIZHOU YUANSHENG POTASSIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has complex process, serious waste of raw materials, long production cycle, and the by-product waste acid is not easy to discharge

Method used

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  • Production method of water-soluble silicon-potassium fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of production method of water-soluble silicon-potassium fertilizer, it comprises the following steps:

[0030] (1) Reaction: Pulverize the silicate ore to 80 mesh with a mass percentage of 20% fluosilicic acid according to the mass volume of 1t: 2m 3 The proportions were mixed, placed in a reaction kettle at 90°C, and heated for 1 hour to obtain solid 1 and gas 1;

[0031] (2) Decomposition: the solid 1 and the sulfuric acid with a mass percentage of 50% are 1t according to the mass volume: 0.1m 3 Mix evenly, react in a decomposition kettle at 100°C for 1 hour to obtain solid 2 and gas 2;

[0032] (3) Absorption: Gas 1 and gas 2 are recovered through a heat exchanger lined with graphite, and after recovery, solid-liquid separation is carried out through a filter press with a washing device to obtain solid 3 and liquid 1, and liquid 1 is set aside;

[0033] (4) Alkalinization: the solid 3 and 10% potassium hydroxide by mass percentage are 1t: 1m according to the...

Embodiment 2

[0035] A kind of production method of water-soluble silicon-potassium fertilizer, it comprises the following steps:

[0036] (1) Reaction: Pulverize the silicate ore to 150 mesh with a mass percentage of 45% fluosilicic acid according to the mass volume of 1t: 6m 3 The proportions were mixed, placed in a reaction kettle at 100°C, and heated for 3 hours to obtain solid 1 and gas 1;

[0037] (2) Decomposition: the solid 1 and the sulfuric acid with a mass percentage of 98% are 1t: 1m according to the mass volume 3 Mix the proportions evenly, and react for 3 hours at 250°C in a decomposition kettle to obtain solid 2 and gas 2;

[0038] (3) Absorption: Gas 1 and gas 2 are recovered through a Teflon-lined heat exchanger, and after recovery, solid-liquid separation is carried out through a filter press with a washing device to obtain solid 3 and liquid 1, and liquid 1 is set aside;

[0039] (4) Alkalinization: the solid 3 and potassium hydroxide with a mass percentage of 30% are 1...

Embodiment 3

[0041] A kind of production method of water-soluble silicon-potassium fertilizer, it comprises the following steps:

[0042] (1) Reaction: crush the silicate ore to 100 mesh and the mass percentage is 35% fluosilicic acid according to the mass volume of 1t: 4m 3 The proportions were mixed, placed in a reaction kettle at 95°C, and heated for 2 hours to obtain solid 1 and gas 1;

[0043] (2) Decomposition: the solid 1 and the sulfuric acid with a mass percentage of 70% are 1t according to the mass volume: 0.5m 3 Mix evenly, react in a decomposition kettle at 150°C for 2 hours to obtain solid 2 and gas 2;

[0044] (3) Absorption: Gas 1 and gas 2 are recovered through a heat exchanger lined with EPDM rubber for corrosion resistance, and after recovery, solid-liquid separation is carried out through a filter press with a washing device to obtain solid 3 and liquid 1, liquid 1 for use;

[0045] (4) Alkalinization: the solid 3 and potassium hydroxide with a mass percentage of 20% ...

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Abstract

The invention provides a production method of water-soluble silicon-potassium fertilizer. The method is characterized in that silicate ores and additives are fully mixed so as to be subjected to reaction, the solid obtained by the reaction is mixed with a decomposition agent so as to be subjected to decomposition reaction, The gas generated in the reaction and decomposition processes is condensedand absorbed to obtain a liquid 1 and an intermediate capable of serving as additives, and the intermediate and an alkalizer are subjected to alkalization reaction to obtain the water-soluble silicon-potassium fertilizer. Compared with the existing high-pressure alkali fusion method and sintering method in China, the production method provided by the invention has the advantages that the reactionpressure is reduced to normal pressure, the reaction temperature is reduced to 100 DEG C, the process is simple, the production cost is low, the contents of effective silicon and potassium oxide in the product can be adjusted according to plant needs so as to further save the cost, and furthermore, the liquid 1 obtained by efficient condensation and absorption has higher concentration, can serve as the additive to achieve the effect of cyclic utilization, and can also be used for producing other products so as to greatly reduce the problem of pollutant discharge caused by inefficient utilization due to low concentration.

Description

technical field [0001] The invention relates to the field of preparation of silicon-potassium fertilizers, in particular to a production method of water-soluble silicon-potassium fertilizers. Background technique [0002] In recent years, with the continuous increase of the total crop output, due to the long-term application of quick-acting chemical fertilizers and the imbalance of fertilization ratio, the soil potassium deficiency has become more and more serious, resulting in the reduction of agricultural production benefits and the decline of the quality of agricultural products. With the continuous high yield of crops, the effective silicon content in the soil also decreases rapidly, and the silicon deficiency phenomenon in the soil is more serious. Due to the influence of soil pH, silicon deficiency is more serious, and the soil in southern regions, especially rice production, has not yet paid enough attention to silicon deficiency. In addition, the current research on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05D11/00
CPCC05D1/00C05D9/00
Inventor 薛希仕邹锡洪任伟陈世毅
Owner GUIZHOU YUANSHENG POTASSIUM TECH
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