Method for producing phosphorus-potassium-silicone-calcium multi-element microporous mineral fertilizer (soil conditioner)

A soil conditioner, microporous mineral technology, used in fertilization devices, fertilizer mixtures, applications, etc.

Inactive Publication Date: 2015-08-19
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem of high-efficiency utilization of phosphate rock powder, and develops a method for producing phosphorus, potassium, silicon and calcium multi-element microporous mineral fertilizer (soil conditioner)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) adding water to the finely ground potassium-rich rock, lime, and phosphate rock at a mass percentage of 52.25%: 42.75%: 5% and stirring, wherein the water-solid ratio is 3: 1;

[0024] (2) transfer the mixed slurry to the reactor;

[0025] (3) React the reactor under the saturated vapor pressure of 190°C for 12 hours, and cool it down to room temperature naturally;

[0026] (4) The product in the reaction kettle is taken out from the kettle, dried and pulverized to obtain the phosphorus, potassium, silicon and calcium multi-element microporous mineral fertilizer (soil conditioner).

[0027] (5) Weigh 1.0000g of the dried product sample, place it in a 300ml Erlenmeyer flask, add 100ml of 0.5mol / l hydrochloric acid solution, cover the bottle stopper, and place it in a shaker to vibrate for half an hour; filter the shaken liquid with filter paper, Take filtrate 5ml and dilute to 100ml with deionized water, then test the elemental concentration in its solution with ful...

Embodiment 2

[0031] (1) Add water and stir the finely ground potassium-rich rock, lime, and phosphate rock at a mass percentage of 38.5%: 31.5%: 30%, wherein the water-solid ratio is 3: 1;

[0032] (2) transfer the mixed slurry to the reactor;

[0033] (3) React the reactor under the saturated vapor pressure of 190°C for 12 hours, and cool it down to room temperature naturally;

[0034] (4) The product in the reaction kettle is taken out from the kettle, dried and pulverized to obtain the phosphorus, potassium, silicon and calcium multi-element microporous mineral fertilizer (soil conditioner).

[0035] (5) Weigh 1.0000g of the dried product sample, put it in a 300ml Erlenmeyer flask, add 100ml of 0.5mol / l hydrochloric acid solution, cover the bottle stopper, and place it in a shaker for half an hour; filter the shaking liquid with filter paper, Take filtrate 5ml and dilute to 100ml with deionized water, then test the elemental concentration in its solution with full-spectrum direct-readi...

Embodiment 3

[0039] (1) Add water and stir the finely ground potassium-rich rock, lime, and phosphate rock at a mass percentage of 49.5%: 40.5%: 10%, wherein the water-solid ratio is 2.5: 1;

[0040] (2) transfer the mixed slurry to the reactor;

[0041] (3) React the reactor under the saturated vapor pressure of 160°C for 24 hours, and cool it down to room temperature naturally;

[0042] (4) The product in the reaction kettle is taken out from the kettle, dried and pulverized to obtain the phosphorus, potassium, silicon and calcium multi-element microporous mineral fertilizer (soil conditioner).

[0043] (5) Weigh 1.0000g of the dried product sample, put it in a 300ml Erlenmeyer flask, add 100ml of 0.5mol / l hydrochloric acid solution, cover the bottle stopper, and place it in a shaker for half an hour; filter the shaking liquid with filter paper, Get filtrate 5ml and dilute to 100ml with deionized water, then test the elemental concentration in its solution with full-spectrum direct-read...

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PUM

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Abstract

A method for producing phosphorus-potassium-silicone-calcium multi-element microporous mineral fertilizer (soil conditioner) by a hydrothermal chemical method comprises the following steps: uniformly mixing finely ground potassium-rich rock, lime and phosphate ore according to the mass percent ratio of (38.5%-52.25%):(31.5%-42.7%):(30%-5%) with water, wherein the water-solid ratio is (1:1)-(3:1); then transferring the slurry into a reaction kettle to make the slurry react for 8-24h under saturated vapor pressure at 160-250DEG C, and naturally cooling a reaction product to room temperature; and drying and crushing the reaction product to obtain the phosphorus-potassium-silicone-calcium multi-element microporous mineral fertilizer (soil conditioner).

Description

technical field [0001] The invention belongs to the field of mineral fertilizer production, in particular to a method for producing phosphorus, potassium, silicon and calcium multi-element microporous mineral fertilizer (soil conditioner) by using a hydrothermal chemical method. Background technique [0002] Today, the depletion of rich phosphate ore resources has become a worldwide problem. Although my country is rich in phosphate rock resources, most of them are medium and low-grade phosphate rock, and the phosphate rock resources are not renewable. On the other hand, my country's soil phosphorus deficiency is serious, and the area of ​​soil phosphorus deficiency has reached 79%. More importantly, the utilization rate of phosphorus fertilizers is much lower than that of nitrogen and potassium fertilizers. Data show that the utilization rate of phosphate fertilizer in my country is about 10-25%. Therefore, how to rationally develop and utilize a large number of medium an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
Inventor 刘善科韩成刘建明
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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