Supercharge Your Innovation With Domain-Expert AI Agents!

A drying pretreatment process for molten salt

A pretreatment and drying technology, applied in the direction of alkali metal chloride, etc., can solve problems such as the inability to guarantee water content

Active Publication Date: 2018-02-13
THE 404 COMPANY LIMITED CHINA NAT NUCLEAR +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the inorganic mixed salts of potassium chloride and sodium chloride containing a certain amount of water are dried in the air by ordinary heating methods, the water content cannot be guaranteed to be lower than 100ppm.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Put the water-containing potassium chloride raw material into a quartz crucible, place it in a vacuum induction furnace, evacuate to 1.0×10-1Pa, slowly raise the temperature to 600°C at a heating rate of 4°C / min, and keep it for 90min. Afterwards, the temperature is lowered under a vacuum condition of 0.1 Pa until the temperature is lower than 100°C. In the glove box filled with inert gas, take by weighing 500g potassium chloride after coming out of the furnace.

[0028] Put the aqueous sodium chloride raw material into a quartz crucible, place it in a vacuum induction furnace, evacuate to 1.0×10-1Pa, slowly raise the temperature to 600°C at a heating rate of 4°C / min, and keep it for 90min. Afterwards, the temperature is lowered under a vacuum condition of 0.1 Pa until the temperature is lower than 100°C. In the glove box filled with inert gas, take by weighing 400g sodium chloride after coming out of the furnace.

[0029] Mix the weighed potassium chloride and sodium...

Embodiment 2

[0031] Put the water-containing potassium chloride raw material into a nickel metal crucible, place it in a vacuum induction furnace, evacuate to 5×10-2Pa, slowly raise the temperature to 580°C at a heating rate of 5°C / min, and keep it for 70min. Then the temperature is lowered under the vacuum condition of 0.4Pa until the temperature is lower than 100°C. In the glove box filled with inert gas after coming out of the furnace, take 550g potassium chloride.

[0032] Put the aqueous sodium chloride raw material into a nickel metal crucible, place it in a vacuum induction furnace, evacuate to 5×10-2Pa, slowly raise the temperature to 580°C at a heating rate of 5°C / min, and keep it for 70min. Then the temperature is lowered under the vacuum condition of 0.4Pa until the temperature is lower than 100°C. In the glove box filled with inert gas, take by weighing 440g sodium chloride after coming out of the furnace.

[0033] Mix the weighed potassium chloride and sodium chloride in a g...

Embodiment 3

[0035] Put the water-containing potassium chloride raw material into a nickel metal crucible, place it in a vacuum induction furnace, evacuate to 1.0×10-3Pa, slowly raise the temperature to 620°C at a heating rate of 3°C / min, and keep it for 80min. Then lower the temperature under the vacuum condition of 0.3 Pa until the temperature is lower than 100°C. In the glove box filled with inert gas, take by weighing 500g potassium chloride after coming out of the furnace.

[0036] Put the aqueous sodium chloride raw material into a nickel metal crucible, place it in a vacuum induction furnace, evacuate to 1.0×10-3Pa, slowly raise the temperature to 620°C at a heating rate of 3°C / min, and keep it for 80min. Then lower the temperature under the vacuum condition of 0.3 Pa until the temperature is lower than 100°C. In the glove box filled with inert gas, take by weighing 400g sodium chloride after coming out of the furnace.

[0037] Mix the weighed potassium chloride and sodium chlorid...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of nuclear raw material pretreatment, specifically relates to a vacuum processing technology of inorganic mixed salt, and provides a rapid, economic, and practical drying pretreatment technology of molten salt. The technology comprises the following steps: step one, filling water-containing potassium chloride and sodium chloride into a quartz crucible, placing the crucible into a vacuum induction furnace, vacuumizing, and slowly heating the crucible primarily; step two, maintaining the temperature of potassium chloride and sodium chloride for 1.1 to 1.6 hours, weighing, and performing primary cooling under a primary vacuum condition; step three, weighing potassium chloride and sodium chloride according to a weight ratio of 5:4 in a glove box filled with inert gas, wherein the total weight of potassium chloride and sodium chloride is 900 to 1000 grams; step four, filling the mixed raw materials of potassium chloride and sodium chloride into a quartz crucible, vacuumizing for a second time, and rapidly raising the temperature secondarily; step five, maintaining the temperature for 1.0 to 1.5 hours, and then carrying out secondary cooling under a secondary vacuum condition so as to obtain the pretreated finished product.

Description

technical field [0001] The invention belongs to the technical field of pretreatment of nuclear raw materials, and in particular relates to a vacuum treatment process of inorganic mixed salts. Background technique [0002] Moisture and adsorbed gas in molten salt are the main influencing factors in the high temperature molten salt extraction (MSE) test. In the MSE process test, the reaction materials include potassium chloride and sodium chloride. In this test, potassium chloride and chloride The water content in sodium is strictly limited, and the water content is required to be less than 100ppm. And when the inorganic mixed salt of potassium chloride and sodium chloride containing a certain amount of moisture is dried in the air through common heating methods, the water content cannot be guaranteed to be lower than the index of 100ppm. This patent develops an economical, applicable and fast drying method for anhydrous potassium chloride and sodium chloride inorganic mixed ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01D3/04
Inventor 李鸿亚刘金生阎江涛吕克强孟津涛蒲小斌周玉海苏振东张浩张志方张仁全刘玉波梁春峰
Owner THE 404 COMPANY LIMITED CHINA NAT NUCLEAR
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com