Preparation method of high-concentration liquid silicon fertilizer

Abstract

The invention relates to a preparation method of a high-concentration liquid silicon fertilizer, which can solve the problems that the preparation process of the silicon fertilizer is complicated and the silicon fertilizer has low content of ionic-state or molecular-state silicon, low concentration and poor stability. The preparation method comprises the following steps: (1) drying silicon powderand then pulverizing the silicon powder by using an ultra-micro pulverizer to prepare ultra-micro fine powder for standby, wherein the particle size of the prepared ultra-micro fine powder is more than 300 meshes; (2) adding 800-900 parts of distilled water into a reaction kettle, adding 8-10 parts of potassium hydroxide while constantly stirring, heating up to the temperature of 60-70 DEG C, continuing stirring till the potassium hydroxide is completely dissolved so as to prepare a standby solution; and (3) adding 300-400 parts of ultra-micro fine powder into the standby solution in batches while stirring, controlling the temperature at 83-75 DEG C, and then transferring the ultra-micro fine silicon powder into the stirring tank and continuing stirring till the ultra-micro fine silicon powder is dissolved completely, reducing pH to 8-10, concentrating to 1000 parts after the reaction, and finally cooling down to room temperature. The preparation method disclosed by the invention has the advantages that the process is simple, solution concentration is high, silicon in the solution exists in molecular and ionic states and the performance of the product is stable.

Description

technical field [0001] The invention relates to a preparation method of liquid fertilizer, in particular to a preparation method of high-concentration liquid silicon fertilizer. Background technique [0002] With the increase of fertilization level, the application of high nitrogen fertilizer must be accompanied by silicon fertilizer. Nitrogen, phosphorus, potassium, and silicon scientific formula fertilization can achieve high-yield results. Studies have found that silicon in silicon fertilizers must be in a molecular or ion state and have a high concentration to be beneficial to the nitrogen, phosphorus, potassium, and medium (secondary) fertilizers. Liquid fertilizers such as microelements and trace elements are used together to facilitate growth. At present, although some silicon fertilizers have a silicon content of 50%-60%, they are mainly prepared with silicate-containing industrial waste residues. Most of this silicate-containing industrial waste residues are in a c...

AI Technical Summary

Problems solved by technology

At present, although some silicon fertilizers have a silicon content of 50%-60%, they are mainly prepared with silicate-containing industrial waste residues. Most of this silicate-containing industrial waste residues are in a crystalline state and are difficult to be absorbed and utilized by plants. , such as insoluble silica gel or silicic acid polymers in paddy fields account for 89%-99% of the total silicon, ionic silicon only accounts for 0.5%-8%, and colloidal silicon accounts for 0-3.3%

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