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Method for synchronously reclaiming porcelain clay and rear earth from ionic adsorption type rear earth ore

An ion-adsorption type, kaolin technology, applied in chemical instruments and methods, solid separation, wet separation, etc., can solve the problems of incomplete utilization of minerals, environmental damage, etc., and achieve comprehensive utilization of associated minerals, high added value, The effect of good economic and environmental benefits

Inactive Publication Date: 2008-09-03
中国高岭土有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for synchronously recovering kaolin and rare earth from ion-adsorption type rare earth ore, which solves the problem that existing rare earth extraction methods seriously damage the environment and the minerals cannot be fully utilized

Method used

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  • Method for synchronously reclaiming porcelain clay and rear earth from ionic adsorption type rear earth ore

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Effect test

Embodiment 1

[0026] Embodiment 1: A method for synchronously recovering kaolin and rare earth from ion-adsorption type rare earth ore, consisting of the following steps in sequence:

[0027] (1) mash

[0028] Mix the ion-adsorbed rare earth raw ore with water for pulping. The pulping can be carried out in the pulping tank to form a pulp with a concentration of 43% by mass. Add ammonium sulfate as a rare earth leaching agent at the same time as the pulping or before the pulping. The process makes the rare earth ions in the ion-adsorption type rare earth raw ore fully undergo ion exchange reaction with the rare earth leaching agent to form a rare earth salt, and the rare earth salt is dissolved in water, wherein the mass ratio of the rare earth leaching agent to the ion-adsorption type rare earth raw ore is 1:32 .

[0029] (2) wet beneficiation

[0030] The ore pulp formed by pounding is subjected to wet beneficiation. The specific process is: the ore pulp is classified by a spiral classif...

Embodiment 2

[0034] Embodiment 2. A method for synchronously recovering kaolin and rare earth from ion-adsorption type rare earth ore. The raw ore composition of the rare earth mine in Longnan County, Lintang City, Jiangxi Province: 0.009-0.01% of rare earth, 48% of kaolin, 5.49% of potassium feldspar, and sodium feldspar Stone 0.16%, mica 1.88%, quartz sand 48.25%, the chemical composition is: chemical composition SiO 2 Fe 2 o 3 al 2 o 3 SO 3 K 2 O Na 2 O CaO MgO TiO 2 IL content (%)72.73 0.88 18.52 0.38 1.10 0.06 0.10 0.11 0.28 6.05

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Abstract

The invention relates to a method for synchronously recycling kaolin and rare earth from ion adsorption type rare earth ore. Ion adsorption type rare earth green ore and water are added to a pulp pool for pulp pounding, rare earth leaching agent is added at the same time, rare earth ion and rare earth leaching agent in the ion adsorption type rare earth green ore flow into the ore pulp after ion exchange reaction. The ore pulp formed by pounding is operated through kaolin wetwashing process, the acquired middling and concentrated ore are filtered, the filter mass is dried to from kaolin, the precipitate produced by adding rare earth precipitator to the filtrate is dried to acquire the rare earth. According the invention, the green ore is pounded, so that rare earth leaching agent can sufficiently react with ion type rare earth in the green ore, making the recovery rate of rare earth higher than that of current method.

Description

technical field [0001] The invention relates to a method for extracting rare earth metals and clay minerals from ores, in particular to a method for synchronously recovering kaolin and rare earths from ion-adsorption type rare earth ores. Background technique [0002] Rare earths are the lanthanides in the periodic table of chemical elements - lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd) , terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), and two elements closely related to the 15 elements of the lanthanide series - scandium (Sc) and yttrium (Y) a total of 17 elements, known as rare earth elements (RareEarth). Rare earth elements are known as the "monosodium glutamate" of industry, and they are used in a wide range of fields, from atomic energy, metallurgy, petroleum, aviation, electronics and electrical industries, chemical textiles, lighti...

Claims

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Application Information

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IPC IPC(8): C22B3/08B03B5/52B03B5/32B03B1/00
CPCY02P10/20
Inventor 陈丽昆赖兆添张忠飞姚渝州李勇席勇郁离炎陆云峰
Owner 中国高岭土有限公司
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