Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for reducing impurities of uranium, thorium, titanium, iron and aluminum in zircon sand

A zircon sand and impurity technology, applied in the direction of non-metallic elements, etc., can solve the problems that titanium cannot be leached and the leaching effect is not good, and achieve the effect of simple process

Active Publication Date: 2017-10-27
阿斯创钛业(营口)有限公司
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical method mainly uses hydrochloric acid and sulfuric acid for leaching at room temperature, and the leaching effect is not good. Among them, the leaching rate of uranium is less than 10%, that of thorium is less than 30%, and titanium cannot be leached basically.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for reducing impurities of uranium, thorium, titanium, iron and aluminum in zircon sand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for reducing impurities of uranium, thorium, titanium, iron and aluminum in zircon sand, comprising the steps of:

[0026] The particle size is 80-140 mesh accounting for 0.44%, 140-160 mesh accounting for 0.69%, 160-200 mesh accounting for 2.57%, ≤200 mesh accounting for 96.2% zircon sand and 70% sulfuric acid according to the mass ratio of 1:0.6 After mixing, send it to the leaching and evaporator for leaching and evaporation. The leaching temperature is 300 degrees Celsius, the leaching time is 2 hours, the evaporation temperature is less than 500 degrees Celsius, and the evaporation time is 30 minutes. Free sulfuric acid in the solid zircon sand after evaporation Less than 0.5%, the solid zircon sand is stirred and immersed in water at 100 degrees Celsius, and the solid zircon sand after water immersion is washed with water 5 times the mass of the zircon sand until neutral, and dried at 105 degrees Celsius to obtain the product.

Embodiment 2

[0028] A method for reducing uranium, thorium, titanium, iron and aluminum impurities in zircon sand, which is to mix zircon sand with ≤200 mesh accounting for 96.2% and 70% sulfuric acid at a mass ratio of 1:0.6, and then send it to a leaching and evaporating device The leaching temperature is 280 degrees Celsius, the leaching time is 1.8 hours, the evaporation temperature is less than 500 degrees Celsius, and the evaporation time is 30 minutes. The free sulfuric acid in the solid zircon sand after evaporation is less than 0.5%, and the solid zircon sand is in Stirring and water immersion are carried out at 80 degrees centigrade, the solid zircon sand after water immersion is washed with water three times the mass of the zircon sand until neutral, and dried at 105 degrees centigrade.

Embodiment 3

[0030] A method for reducing uranium, thorium, titanium, iron and aluminum impurities in zircon sand, which is to mix zircon sand with ≤200 mesh accounting for 96.2% and 70% sulfuric acid at a mass ratio of 1:0.6, and then send it to a leaching and evaporating device leaching to dryness, leaching temperature is 260°C, leaching time is 1.5 hours, evaporation temperature is less than 500°C, evaporation time is 30 minutes, free sulfuric acid in solid zircon sand after evaporation is less than 0.5%, and solid zircon sand is in Stirring and water immersion at 85°C, washing the solid zircon sand with water 4.5 times the mass of the zircon sand until neutral, and drying at 105°C.

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

A method for reducing uranium, thorium, and titanium impurities in zircon sand. Zircon sand with a particle size of ≤200 mesh accounting for 96-96.2% is fully processed by adding 70% sulfuric acid at a mass ratio of zircon sand to 70% sulfuric acid of 1:0.6. After mixing, it is sent to the leaching evaporator. The leaching temperature is 200-300 degrees Celsius. The leaching time is 1-2 hours. The evaporation-drying temperature is less than 500 degrees Celsius. The evaporating-drying time is 30 minutes. The free sulfuric acid in the solid zircon sand after evaporation is Less than 0.5%, the solid zircon sand is stirred and water-soaked at 80-100 degrees Celsius. The water-soaked solid zircon sand is washed with water 3-5 times the mass of the zircon sand until neutral, and dried at 105 degrees Celsius. That’s it. The invention can increase the total leaching rate of uranium and thorium to 50-70%, reduce the total amount of uranium and thorium in the zircon sand to less than 500 ppm, and reduce the titanium oxide to less than 0.2%. Thus, the highly radioactive and high-titanium zircon sand reaches the standard of high-grade products.

Description

technical field [0001] The invention belongs to the field of hydrometallurgical mineral treatment, in particular to a method for reducing impurities of uranium, thorium, titanium, iron and aluminum in zircon sand. Background technique [0002] At present, the treatment methods for uranium, thorium, titanium, iron and aluminum impurities in zircon sand with a particle size of <200 mesh and 96.2% of high-uranium thorium titanium include physical methods and chemical methods. The physical method is a solid mixing and dilution method, which does not fundamentally reduce the impurities of uranium, thorium, titanium, iron and aluminum in the original material. The chemical method mainly uses hydrochloric acid and sulfuric acid for leaching at room temperature, and the leaching effect is not good. Among them, the leaching rate of uranium is less than 10%, that of thorium is less than 30%, and titanium cannot be leached basically. Contents of the invention [0003] The purpose...

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): C01B33/20
Inventor 亚历山大·布朗康蓉白生红周奎简平
Owner 阿斯创钛业(营口)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com