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Method and device for preparing mixed rare earth chloride through continuous extraction transformation of sulfuric acid rare earth

A technology of rare earth sulfate and rare earth chloride, applied in the direction of improving process efficiency, etc., can solve the problems of low automation, poor sealing of cylindrical reaction tanks, high labor operation intensity, etc., achieve high automation and improve the operating environment and labor intensity, the effect of reducing labor intensity

Pending Publication Date: 2021-01-22
BAOTOU HUAMEI RE PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The principle of this process is mature, but in the production process, the degree of automation is low, the sealing of the cylindrical reaction tank equipment is not good, and calcium sulfate crystals are produced during the reaction process, which leads to frequent cleaning of the extractor and high labor operation intensity

Method used

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  • Method and device for preparing mixed rare earth chloride through continuous extraction transformation of sulfuric acid rare earth
  • Method and device for preparing mixed rare earth chloride through continuous extraction transformation of sulfuric acid rare earth
  • Method and device for preparing mixed rare earth chloride through continuous extraction transformation of sulfuric acid rare earth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] n=4, m=2, a total of 6 stages of continuous transformation tanks.

[0069] Rare earth sulfate solution REO=26g / L, pH=4.5, solution temperature 45°C. Given flow 96m 3 / h, start the agitation of the 1st to 6th stage agitator 16 from back to front, the rare earth sulfate solution is fed by the flow control system, and the saponified organic phase is controlled according to the calculation flow input. First, the organic phase and the aqueous phase all enter the first stage transformation Single tank 11, the solution after the reaction flows into the next stage transformation single tank 11 step by step, the clarified water phase containing ammonium sulfate, magnesium sulfate or other sulfates flows out from the water phase overflow port 35, and is regulated according to the pH meter 51 The amount of rare earth sulfate solution to be added is to control the pH=4.5-5.5 to ensure that the aqueous phase of ammonium sulfate, magnesium sulfate or other sulfates does not contain ...

Embodiment 2

[0072] n=4, m=2, a total of 6 stages of continuous transformation tanks.

[0073] Rare earth sulfate solution REO=30g / L, pH=4.5, solution temperature 45°C. Given flow rate 83.2m 3 / h, start the agitation of the 1st to 6th stage agitator 16 sequentially from back to front, the rare earth solution is fed by the flow control system of the feed liquid, and the saponified organic phase is input according to the calculation control flow rate. First, all the organic phase and the aqueous phase enter the first stage. The step-by-step conversion single tank 11, the solution after the reaction flows into the next-level conversion single tank 11 step by step, and the water phase containing ammonium sulfate, magnesium sulfate or other sulfates after clarification flows out from the water phase overflow port 35, according to the pH meter 51 To regulate the addition of rare earth sulfate solution, control pH=4.5-5.5 is used to ensure that the aqueous phase of ammonium sulfate, magnesium su...

Embodiment 3

[0076] n=4, m=2, a total of 6 stages of continuous transformation tanks.

[0077] Rare earth sulfate solution REO=35g / L, pH=4.5, solution temperature 45°C. A total of 6 stages of continuous transition tanks, with a given flow rate of 72m 3 / h, start the agitation of the 1st to 6th-stage agitator 16 from back to front, the rare earth solution is fed by the feed liquid flow control system, and the saponified organic phase is input according to the calculated flow control. First, the organic phase and the aqueous phase all enter the first stage Transformation single tank 11, the solution after the reaction flows into the next stage transformation single tank 11 step by step, and the water phase containing ammonium sulfate, magnesium sulfate or other sulfates after clarification flows out from the water phase overflow port, according to pH meter 51 Regulating the amount of rare earth solution added, controlling the pH=4.5-5.5 is used to ensure that the aqueous phase of ammonium s...

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Abstract

The invention discloses a method and device for preparing mixed rare earth chloride through continuous extraction transformation of sulfuric acid rare earth. The device for preparing the mixed rare earth chloride through continuous extraction transformation of the sulfuric acid rare earth comprises a sulfuric acid rare earth continuous transformation system, a loaded organic continuous clarification system, a flow control system and a reflux system. According to the method and device, an intermittent centralized production mode is changed, the stability of product quality can be improved, andthe continuity and automation of production are realized.

Description

technical field [0001] The invention belongs to the field of rare earth hydrometallurgy, and specifically relates to a method and a device for preparing mixed rare earth chloride by continuous extraction and transformation of sulfuric acid rare earth. Background technique [0002] In the process of rare earth hydrometallurgy, the decomposition of rare earth concentrates in the north is usually obtained by high-temperature roasting of concentrated sulfuric acid to obtain roasted ore. Saponification of P507 or P204 extractive transformation of saponification to obtain loaded organics, and back extraction of loaded organics with hydrochloric acid to obtain mixed rare earth chloride feed liquid. The process principle is mature, but in the production process, the degree of automation is low, the sealing of the cylindrical reaction tank equipment is not good, and calcium sulfate crystals are produced during the reaction process, which leads to frequent cleaning of the extractor an...

Claims

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Application Information

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IPC IPC(8): C22B3/02C22B3/26C22B59/00
CPCC22B3/02C22B59/00C22B3/26Y02P10/20
Inventor 谢军刘磊刘清杨洁许国华邵旭晖刘进潮柳凌云
Owner BAOTOU HUAMEI RE PRODS
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