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Method for synthesizing nano-white mica byproduct (potassium nitrate) by use of kaliophilite powder

A technology of potassium nepheline powder and muscovite, which is applied in the field of fine chemical material preparation, can solve the problems of high price, complicated production process, shortage of potassium chloride resources, etc., and achieves low cost, high product purity, good economic benefits and application prospects. Effect

Active Publication Date: 2017-12-29
昊青薪材(北京)技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the potassium nitrate in the world is synthesized by potassium chloride. However, potassium chloride resources in my country are extremely scarce, and the price is expensive, and the production process is very complicated at the same time.

Method used

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  • Method for synthesizing nano-white mica byproduct (potassium nitrate) by use of kaliophilite powder
  • Method for synthesizing nano-white mica byproduct (potassium nitrate) by use of kaliophilite powder
  • Method for synthesizing nano-white mica byproduct (potassium nitrate) by use of kaliophilite powder

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Weigh 100 g of ka-nepheline powder, 37 g of nitric acid with a mass fraction of 67%, 0.3 g of acetic acid, and 500 mL of distilled water. First mix nitric acid, acetic acid and distilled water to form a solution, then pour the kalephine powder into the solution, stir evenly to form a slurry, put it into a stainless steel reaction kettle with a polytetrafluoroethylene liner, and put the water under the condition of 250 ° C After thermal reaction for 18 hours, immediately take out the reaction kettle and put it into cold water for rapid cooling. After the kettle is opened, the solid-liquid separation is carried out, and the filtrate is evaporated and crystallized at 110-120°C to obtain the potassium nitrate product. The dissolution rate of potassium oxide measured by ICP is 68.7%, and K in potassium nitrate 2 The O content is 45.31%, and the purity of potassium nitrate equivalent is greater than 97%. The filter cake is washed with distilled water until the pH of the filt...

Embodiment 2

[0031] Weigh 100 g of ka-nepheline powder, 55 g of nitric acid with a mass fraction of 67%, 1.8 g of acetic acid, and 2000 mL of distilled water. First mix nitric acid, acetic acid and distilled water to form a solution, then pour the kalephine powder into the solution, stir evenly to form a slurry, put it into a stainless steel reaction kettle with a polytetrafluoroethylene liner, and put the water under the condition of 250 ° C After thermal reaction for 24 hours, immediately take out the reaction kettle and put it into cold water for rapid cooling. After the kettle is opened, the solid-liquid separation is carried out, and the filtrate is evaporated and crystallized at 110-120°C to obtain the potassium nitrate product. The dissolution rate of potassium oxide measured by ICP was 70.2%, and K in potassium nitrate 2 The O content is 45.11%, and the purity of potassium nitrate equivalent is greater than 96%. The filter cake is washed with distilled water until the pH of the fi...

Embodiment 3

[0033] Weigh 100 g of ka-nepheline powder, 40 g of nitric acid with a mass fraction of 67%, 1.0 g of acetic acid, and 1000 mL of distilled water. First mix nitric acid, acetic acid and distilled water to form a solution, then pour the kalnite powder into the solution, stir evenly to form a slurry, put it in a stainless steel reaction kettle with a polytetrafluoroethylene liner, and heat it under the condition of 250 ℃ After reacting for 72 hours, take out the reaction kettle immediately and put it into cold water for rapid cooling. After the kettle is opened, the solid-liquid separation is carried out, and the filtrate is evaporated and crystallized at 110-120°C to obtain the potassium nitrate product. The dissolution rate of potassium oxide measured by ICP is 69.7%, and K in potassium nitrate 2 The O content is 45.21%, and the purity of potassium nitrate equivalent is greater than 97%. The filter cake is washed with distilled water until the pH value of the filtrate is 9-10,...

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Abstract

A method for synthesizing a nano-white mica (KAl2[Si3AlO10](OH)2) byproduct (potassium nitrate KNO3) by use of kaliophilite powder (KAlSiO4) and belongs to the field of preparation of fine chemical materials. The method is characterized in that white mica powder is mixed with nitric acid and an acetic acid solution, and a hydrothermal reaction is performed at 210-250 DEG C for 12-72 h to synthesize a solid-phase product (nano-white mica) and a liquid-phase product (a potassium nitrate solution). Kaliophilite powder and nitric acid are taken as raw materials to synthesize the nano-white mica byproduct (potassium nitrate), such components as potassium, aluminium and silicon in kaliophilite are fully utilized, the whole process is simple in technology, the modern industrial requirements for '100% resource utilization ratio' and 'three-waste zero emission' efficient energy-saving and clean production can be satisfied, and industrial production is easy to implement.

Description

technical field [0001] The invention belongs to the technical field of preparation of fine chemical materials, and in particular relates to a method for synthesizing nano muscovite by-product potassium nitrate by using kalpheline powder. Background technique [0002] Muscovite (K[Al 2 [AlSi 3 o 10 ](OH) 2 ), whose theoretical composition is K 2 O (11.8%), Al 2 o 3 (38.5%), SiO 2 (45.2%), H 2 O (4.5%). The structural unit layer is a 1:2 (T-O-T) type structural unit layer, [(Si, Al)O 4 ]Tetrahedron has three corner tops to form a hexagonal network layer, two layers of hexagonal network layers sandwich an octahedral layer, forming a mica structure layer, two layers of active oxygen and (OH) are the most closely packed, cations (Al, Mg, Fe etc.) are filled in the octahedral voids to form an octahedrally coordinated cation layer. Due to its special layered structure, muscovite has a stable lattice, good electrical insulation properties, heat resistance, transparency, m...

Claims

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Application Information

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IPC IPC(8): C01B33/42C01D9/04
CPCC01B33/42C01D9/04C01P2002/72C01P2002/77C01P2004/03C01P2004/22C01P2006/80
Inventor 原江燕马鸿文姚文贵常倩倩
Owner 昊青薪材(北京)技术有限公司
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