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Method for manufacturing rare earth saponifier using barium sulfide

A technology of saponification agent and barium sulfide, applied in the chemical field, can solve the problems of poor recycling efficiency and low value, and achieve the effect of increasing efficiency

Inactive Publication Date: 2006-12-27
王梓柱
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recycling efficiency is not good due to the low value of ammonium chloride or ammonia water

Method used

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  • Method for manufacturing rare earth saponifier using barium sulfide
  • Method for manufacturing rare earth saponifier using barium sulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] a. Add 25g of black ash with a BaS content of 60% into hot water at 55°C to 85°C, stir for 15min and filter to prepare 100ml of BaS solution with a concentration of 150g / L. Take 1.5M P 507 Put 330ml into a 500ml reactor, add the above-mentioned BaS solution, stir and react at a temperature of 18-40°C for 10min and statically separate into layers. produced H 2 S gas is introduced into 18ml aqueous solution containing 3.6g NaOH through a catheter with negative pressure for absorption. Separate the stratified barium soap for later use, and heat the water phase at the same time, the released H 2 S gas is also introduced into NaOH solution for absorption.

[0025] b. Take 37ml of rare earth solution with a concentration of 1.6M and PH=1~2 and add the above barium soap P 570 In the medium, the temperature is between 18°C ​​and 40°C, the reaction is stirred for 15 to 20 minutes, the static layer is separated, and the water phase contains BaCl 2 About 36ml, evaporated to d...

Embodiment 2

[0028] a. Slowly add 2.5T black ash with a BaS content of 60% into hot water at a temperature of 55°C-85°C, stir for 50-70min, and the water volume is 9m 3 , filter, wash the filter residue with water, and adjust it to a concentration of 150g / L and a volume of 10m 3 Backup.

[0029] b. Introduce the above-mentioned BaS solution as a barium soap liquid into the grouping production process of rare earth extraction of praseodymium and neodymium, wherein P 507 The concentration of the rare earth solution is 1.47M, the flow rate is 110L / min; the BaS flow rate is 31.2L / min, the concentration of the rare earth solution is 1.6M, the pH=1~2, and the flow rate is 12.4L / min.

[0030] The H produced during barium soap formation 2 S is mixed with a NaOH solution with a concentration of 20% to 30% in a Venturi reactor and sprayed for absorption, and at the same time, the H released by heating its water phase 2 S gas is also absorbed by Venturi reactor to prepare NaHS.

[0031] In the pr...

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Abstract

This invention involves the method of producing rare-earth saponated agent by barium sulfuration in chemical field. A. barium sulfuration solution and P507, P204 containing diluent or naphthenic acid to perform barium-soap reaction to produce barium-soap. During the reaction, the produced sulfureted hydrogen can be recollected by the obsorption process; B. barium-soap and rare-earth solution react to generate rare-earth soap. The barium chloride in solution can be recollected through condensation. The invention combined the rare-earth seperation and BaCl2 production, can not only use the acidity of P507, P204 or naphthenic acid to substitute HCl in production of BaCl2, but also save the NH3*H2O or NH4HCO3 during the seperation of rare-earth. The formed BaCl2 has high density, so to save the consumption of steam during condensation.

Description

technical field [0001] The invention relates to a method for preparing a rare earth saponification agent from barium sulfide in the field of chemistry. Background technique [0002] The preparation process of rare earth soap is usually involved in the rare earth separation and extraction process. Before the present invention proposes, the preparation method of rare earth soap is: at first with ammoniacal liquor or ammonium bicarbonate and 2-ethylhexyl phosphonic acid 2-ethylhexyl ester (P 507 ) or two (2-ethylhexyl phosphate) (P 204 ) or naphthenic acid for ammonia soap reaction to make ammonia soap extractant, ammonia soap extractant reacts with rare earth solution to form rare earth soap, and then extracts and separates rare earth elements. In the process of preparing rare earth soap, the concentration of ammonium chloride produced in the water phase is relatively low, usually between 120g / L and 250g / L, and the amount of steam consumed in the preparation of ammonia water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/26
CPCY02P10/20
Inventor 王梓柱
Owner 王梓柱