High-purity potassium nitrate tablet and preparation method thereof

A potassium nitrate tablet and potassium nitrate technology, applied in the field of high-purity potassium nitrate, can solve problems such as difficult granulation, high cost, and difficult repair, and achieve the effects of simple process, convenient storage, and easy operation

Pending Publication Date: 2021-07-16
长沙鑫本助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing granular potassium nitrate mainly adopts spray granulation technology, and spray granulation technology has better granulation effect for agricultural grade potassium nitrate, but it is difficult to granulate industrial grade potassium nitrate with potassium nitrate main content ≥ 99%, and Shotcrete granulation equipment is prone to failure, and it is difficult to repair after the failure occurs, and the cost is high

Method used

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  • High-purity potassium nitrate tablet and preparation method thereof
  • High-purity potassium nitrate tablet and preparation method thereof
  • High-purity potassium nitrate tablet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1, such as figure 1 As shown, a high-purity potassium nitrate tablet 1 is formed by extruding crystal particles 2 of potassium nitrate with a mesh number of 25 mesh-150 mesh and a purity of more than 99.7%. The high-purity potassium nitrate tablet 1 The thickness is 4 mm and the diameter is 10 mm.

[0035] The preparation method of high-purity potassium nitrate tablet comprises the steps:

[0036] 1) Sieve high-purity potassium nitrate crystals with a purity of more than 99.7%, and select crystal particles 2 with a mesh size of 25 mesh to 150 mesh,

[0037] 2) Compress the crystal particles 2 selected in step 1) through a tablet press,

[0038] 3) Pass the finished product after tableting in step 2) through sampling inspection, and pack it into a finished product after passing the inspection.

[0039] The surface area of ​​the high-purity potassium nitrate tablet 1 obtained in this embodiment has been greatly reduced relative to the surface area of ​​the powd...

Embodiment 2

[0040] Example 2, such as figure 2 As shown, a high-purity potassium nitrate tablet 1 is formed by extruding crystal particles 2 of potassium nitrate with a mesh number of 25 mesh-150 mesh and a purity of more than 99.7%. The high-purity potassium nitrate tablet 1 Thickness is 4 millimeters, and diameter is 10 millimeters, and the surface of described high-purity potassium nitrate tablet 1 has one deck anti-caking agent film 3.

[0041] The preparation method of high-purity potassium nitrate tablet comprises the steps:

[0042] 1) Sieve high-purity potassium nitrate crystals with a purity of more than 99.7%, and select crystal particles 2 with a mesh size of 25 mesh to 150 mesh,

[0043] 2) Compress the crystal particles 2 selected in step 1) through a tablet press,

[0044] 3) Pass the high-purity potassium nitrate tablet compressed in step 2) through the anti-caking agent pool, so that the surface of the high-purity potassium nitrate tablet is coated with anti-caking agen...

Embodiment 3

[0053] Example 3, such as image 3 As shown, a high-purity potassium nitrate tablet 1 is formed by extruding crystal particles 2 of potassium nitrate with a mesh number of 25 mesh-150 mesh and a purity of more than 99.7%. The high-purity potassium nitrate tablet 1 The thickness is 4 millimeters, and the diameter is 10 millimeters. The crystal particles 2 of potassium nitrate forming the high-purity potassium nitrate tablet 1 have a layer of anti-caking agent film 4 on the surface.

[0054] The preparation method of high-purity potassium nitrate tablet comprises the steps:

[0055] 1) Spray the anti-caking lubricant evenly on the high-purity potassium nitrate crystal with a purity of more than 99.7%, and then dry it at 120°C. The amount of anti-caking agent is 0.1% of the weight of potassium nitrate.

[0056] 2) Sieve the dried high-purity potassium nitrate crystals in step 1), and select crystal particles 2 with a mesh size of 25 mesh to 150 mesh,

[0057] 3) Compress the cr...

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Abstract

The invention discloses a high-purity potassium nitrate tablet which is formed by extruding potassium nitrate crystal particles with the mesh number of 25-150 and the purity of 99.7% or above. The thickness of the high-purity potassium nitrate tablet is 3-15 mm, and the diameter of the high-purity potassium nitrate tablet is 5-15 mm. A layer of anti-blocking agent film is arranged on the surface of the high-purity potassium nitrate tablet, or a layer of anti-blocking agent film is arranged on the surface of the potassium nitrate crystal particles forming the high-purity potassium nitrate tablet. The invention relates to a preparation method of the high-purity potassium nitrate tablet, which comprises the following steps: screening high-purity potassium nitrate crystals with the purity of more than 99.7%, selecting crystal particles with the particle size of 25-150 meshes, and tabletting, or uniformly spraying an anti-blocking agent on the high-purity potassium nitrate crystals before tabletting, or coating the surface of the high-purity potassium nitrate tablet with the anti-blocking agent after tabletting. The high-purity potassium nitrate tablet has the advantages that the high-purity potassium nitrate tablet is difficult to cake and more convenient to store, transport and use.

Description

technical field [0001] The invention relates to the technical field of high-purity potassium nitrate, in particular to a high-purity potassium nitrate tablet and a preparation method thereof. Background technique [0002] Potassium nitrate is one of the important chemical raw materials, widely used in national defense, military industry, industry, agriculture, food additives, medicine, feed additives, optical glass and electronic industries and other fields. Potassium nitrate is a strong oxidant, which can fuel the fire when it meets combustibles; it may cause combustion and explosion when it contacts or mixes with organic matter, reducing agent, and combustibles. When burning and decomposing, it will release toxic nitrogen oxide gas. Therefore, the relevant state departments have identified potassium nitrate as a category 5.1 of dangerous goods, and have strict requirements on its packaging, storage and transportation. [0003] The traditional potassium nitrate production...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D9/18
CPCC01D9/18C01P2006/80
Inventor 刘建李刚
Owner 长沙鑫本助剂有限公司
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