Process method for smelting and separating uranium, thorium and rare earth from monazite concentrate

A process method, ore concentrate technology, which is applied in the field of smelting and separating uranium, thorium and rare earth, and can solve problems such as endangering the ecological environment

Active Publication Date: 2020-04-17
湖南中核金原新材料有限责任公司
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of traditional monazite concentrate smelting, separation and recovery of rare earth chloride mixture, because valuable resources such as uranium and thorium have not been comprehensively recovered, existing monazit

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
  • Process method for smelting and separating uranium, thorium and rare earth from monazite concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Monazite concentrate (REO: 52.61%, ThO 2 : 4.03%, CaO: 2.06%, TiO 2 :1.84%, ZrO 2 : 2.85%, SiO 2 : 2.73%, Fe 2 o 3 : 2.92%, U 3 o 8 : 1.14%), after unpacking, it is transported to the monazite silo by the belt conveyor system, and then discharged through the outlet of the lower part of the silo and sent into the 50% to 60% sodium hydroxide solution in the stirring slurry tank, according to 1 times The ratio of the volume to the weight of the pulp is used for pulping and uniform mixing. The pulp is pumped into the bead mill through the rubber tube. Under normal pressure or micro pressure, after grinding, the pulp with a particle size of -320 mesh (accounting for more than 99.5%) is classified by the built-in The device is classified and discharged from the mill.

[0069] Pump the slurry with a particle size of 320 mesh (accounting for more than 99.5%) into the permanent magnet magnetic separator. The magnetic separation strength of the magnetic separator is 1.2T; ...

Embodiment 2

[0085] Monazite concentrate (REO: 50.82%, ThO 2 : 4.29%, CaO: 2.63%, TiO 2 :2.82%, ZrO 2 : 6.71%, SiO 2 : 3.46%, Fe 2 o 3 :3.09%, U 3 o 8 : 0.98%) After being unpacked, it is transported to the monazite silo by a belt conveyor system, and then discharged through the outlet at the lower part of the silo and sent into the 50% to 60% sodium hydroxide solution in the stirring slurry tank, according to 1 times The ratio of the volume to the weight of the pulp is used for pulping and uniform mixing. The pulp is pumped into the bead mill through the rubber tube. Under normal pressure or micro pressure, after grinding, the pulp with a particle size of -320 mesh (accounting for more than 99.5%) is passed through the built-in classification device. Classification is carried out and discharged from the mill.

[0086] Pump the slurry with a particle size of 320 mesh (accounting for more than 99.5%) into the permanent magnet magnetic separator. The magnetic separation strength of th...

Embodiment 3

[0102] Monazite concentrate (REO: 51.24%, ThO 2 : 4.01%, CaO: 2.01%, TiO 2 :2.28%, ZrO 2 : 2.79%, SiO 2 : 2.86%, Fe 2 o 3 : 2.87%, U 3 o 8 : 1.58%), after unpacking, it is transported to the monazite silo by the belt conveyor system, and then discharged through the outlet of the lower part of the silo and sent into the 50% to 60% sodium hydroxide solution in the stirring slurry tank, according to 1 times The ratio of the volume to the weight of the pulp is used for pulping and uniform mixing. The pulp is pumped into the bead mill through the rubber tube. Under normal pressure or micro pressure, after grinding, the pulp with a particle size of -320 mesh (accounting for more than 99.5%) is classified by the built-in The device is classified and discharged from the mill.

[0103] Pump the slurry with a particle size of 320 mesh (accounting for more than 99.5%) into the permanent magnet magnetic separator. The magnetic separation strength of the magnetic separator is 1.2T; ...

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
Granularityaaaaaaaaaa
Login to view more

Abstract

The invention provides a process method for smelting and separating uranium, thorium and rare earth from monazite concentrate. The process method comprises the following steps that the monazite concentrate is used as a raw material, the steps of crushing by wet ball mill and iron removal by magnetic separation, alkali decomposition transformation, preparation of trisodium phosphate product, alkalicake adding hydrochloric acid for solubilization, preparation of rare earth chloride mixture product, adding hydrochloric acid to optimal solution slag for full dissolution, extraction of uranium byamines and preparation of uranium products, extraction of thorium by acidic phosphorus containing compounds and preparation of crude thorium products and wastewater treatment are adopted, and the recovery rate of valuable resources such as uranium, thorium, rare earth is greater than 95%. After the thorium is extracted, the raffinate water phase is returned to the optimal solution to recover the rare earth chloride mixture, most of the production process water is directly returned and recycled, and a small part of wastewater is returned to the system for utilization after comprehensive treatment, so that zero discharge of the wastewater is realized. The process is reliable, the chemical materials are common, and the consumption is low. The use of solitary stone resources is ensured for green, environmental protection, efficient and clean production, and the process method has obvious social benefits and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of uranium and thorium recovery, in particular to a process for smelting and separating uranium, thorium and rare earth from monazite concentrate. Background technique [0002] Monazite is a phosphate mineral of rare earth and thorium and uranium. It is one of the important rare earth minerals and the earliest rare earth mineral to be used in industry. Monazite concentrate smelting, separation and recovery of rare earth chloride mixture generally adopts the process of first alkali decomposition and then hydrochloric acid to extract the rare earth chloride mixture, but the recovery rate of rare earth is low, and valuable resources such as uranium and thorium have not been recovered and utilized. , The discharge of waste water is large and difficult to meet the discharge standards, and the amount of waste residue is large and cannot be properly preserved. It does not meet the relevant provisions of the safety ...

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
IPC IPC(8): C22B60/02C22B3/28C22B59/00C22B3/44C22B3/40C22B1/00C01F17/271C01F15/00C01B25/30
CPCC01B25/30C22B1/00C22B3/44C22B59/00C22B60/0208C22B60/0278C22B60/0291C22B3/282C22B3/409Y02P10/20
Inventor 曾中贤谢凌峰刘浩施雨张伟超李春湘段颖杰张伟华
Owner 湖南中核金原新材料有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap