Brine mixing method for potash fertilizer production

A method of mixing brine and potash fertilizer, which is applied in the field of potash fertilizer production, can solve the problems of long mixing time and low quality halogen, and achieve the effects of high efficiency of mixing halogen, simple operation process and high recovery rate.

Pending Publication Date: 2022-06-24
格尔木藏格钾肥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of bittern method for potash fertilizer production, which can solve the problem of long bittern time in the bittern process through the control of the E halogen component and the F halogen component and the control of the bittern time. The problem of low halogen quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A kind of potash fertilizer production is used the method for adding bittern, comprises the following steps:

[0049] A. Brine acquisition process:

[0050] The mother liquor at point E and the mother liquor at point F are transported to the brine blender with a pump.

[0051] B. Brine blending process:

[0052] Mix in a brine blender, and crystallize at a controlled rate for 20 minutes to obtain low-sodium carnallite. The overflowed brine-completion liquid goes to the salt field.

[0053] C. Concentration process:

[0054] The slurry containing low-sodium carnallite is transported to a thickener to thicken to obtain a low-sodium carnallite slurry with a high concentration, and the mother liquor is returned to the salt field.

[0055] D. Low-sodium carnallite separation process:

[0056] The low-sodium carnallite slurry obtained in the thickener enters a belt filter or centrifuge for solid-liquid separation to obtain a low-sodium carnallite solid phase, and the mot...

Embodiment 2

[0068] A kind of potash fertilizer production is used the method for adding bittern, comprises the following steps:

[0069] H. Brine acquisition process:

[0070] The mother liquor at point E and the mother liquor at point F are transported to the brine blender with a pump.

[0071] I. The process of adding brine:

[0072] Mix in a brine blender, and crystallize at a controlled rate for 25 minutes to obtain low-sodium carnallite. The overflowed brine-completion liquid goes to the salt field.

[0073] J. Enrichment process:

[0074] The slurry containing low-sodium carnallite is transported to a thickener to thicken to obtain a low-sodium carnallite slurry with a high concentration, and the mother liquor is returned to the salt field.

[0075] K. Low-sodium carnallite separation process:

[0076] The low-sodium carnallite slurry obtained in the thickener enters a belt filter or centrifuge for solid-liquid separation to obtain a low-sodium carnallite solid phase, and the m...

Embodiment 3

[0088] A kind of potash fertilizer production is used the method for adding bittern, comprises the following steps:

[0089] O. Brine acquisition process:

[0090] The mother liquor at point E and the mother liquor at point F are transported to the brine blender with a pump.

[0091] P. The process of adding brine:

[0092] Mix in a brine blender, and crystallize at a controlled rate for 30 minutes to obtain low-sodium carnallite. The overflowed brine-completion liquid goes to the salt field.

[0093] Q. Concentration process:

[0094] The slurry containing low-sodium carnallite is transported to a thickener to thicken to obtain a low-sodium carnallite slurry with a high concentration, and the mother liquor is returned to the salt field.

[0095] R. Low-sodium carnallite separation process:

[0096] The low-sodium carnallite slurry obtained in the thickener enters a belt filter or centrifuge for solid-liquid separation to obtain a low-sodium carnallite solid phase, and th...

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PUM

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Abstract

The invention discloses a brine mixing method used in a production process for producing a potash fertilizer by adopting a brine mixing method, which comprises the following steps: A, conveying an E-point mother solution and an F-point mother solution into a brine mixing device, and B, carrying out mixing and airspeed crystallization to obtain low-sodium carnallite. And C, conveying the slurry containing the low-sodium carnallite into a thickener for thickening to obtain low-sodium carnallite slurry with relatively high concentration, and returning mother liquor to the salt pan. The invention solves the problem of unstable crystallization of low-sodium carnallite in the existing brine mixing process for potash fertilizer production, and effectively improves the utilization rate of the mother liquor.

Description

technical field [0001] The invention relates to the technical field of potash fertilizer production, in particular to a brine mixing method for potash fertilizer production. Background technique [0002] Potassium fertilizer, the full name of potassium fertilizer, is a fertilizer with potassium as the main nutrient. Potassium in plants generally accounts for 0.2% to 4.1% of dry matter weight, second only to nitrogen. Potassium participates in more than 60 enzyme systems during plant growth and development Activation, photosynthesis, transport of assimilated products, carbohydrate metabolism and protein synthesis and other processes. The existing domestic potash fertilizer production capacity is mainly concentrated in Golmud, Qinghai and Lop Nur, Xinjiang. In 2010, China produced a total of 3,967,569 tons of potash fertilizer (in pure terms), an increase of 12.7% over the same period in 2009. Potash fertilizer production by region, of which North China accounted for 45,200 t...

Claims

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Application Information

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IPC IPC(8): C01D3/06C05D1/02
CPCC01D3/06C05D1/02
Inventor 张萍龚国力张有平李玉梅魏进财代国忠袁广军周君王珍邦
Owner 格尔木藏格钾肥有限公司
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