Technology for improving ion type rare earth in-situ leaching method by activated ion water and microorganism acid

An ion-type rare earth, in-situ leaching technology, applied in the direction of improving process efficiency, etc.

Inactive Publication Date: 2015-11-18
朱上翔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are still many disadvantages in the advanced in-situ leaching process

Method used

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  • Technology for improving ion type rare earth in-situ leaching method by activated ion water and microorganism acid
  • Technology for improving ion type rare earth in-situ leaching method by activated ion water and microorganism acid
  • Technology for improving ion type rare earth in-situ leaching method by activated ion water and microorganism acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example [1]: Example of culturing microbial acid

[0022] A kind of ore leaching agent for ion rare earth leaching, its typical culture medium formula is:

[0023]

[0024]

[0025] Culture process and conditions, parameters

[0026] current date (time)

[0027] The above is the leaching agent obtained by using 1% self-prepared lactic acid bacteria stock solution after 3 days of cultivation (72 hours) at the beginning of the research and development stage, and the pH value changed from the initial 6.4 to 3.1. It can be used as the ore leaching liquid for in-situ ion rare earth mining. This formula can be further optimized according to the specific conditions of the soil around the ion rare earth mine. Select the optimum culture temperature and shorten the growth cycle (required less than 18 hours), so as to meet the needs of large-scale industrial production. The fungi in the lactic acid-like seed stock solution of the present invention are anaerobic ...

Embodiment 2

[0028] Embodiment [2] The improved process of activated ion water instead of oxalic acid as precipitant

[0029] 1. Overview: Use acid and alkali mixed ion water and acid ion water with a salt content of 1‰ and 5‰ respectively as the stock solution, and then add oxalic acid as an auxiliary agent to form a 19# rare earth acid precipitant.

[0030] 2. To prepare acidic ionized water and acid-base mixed ionized water with a salt content of 1‰, the specific operation data are as follows:

[0031] A, Q total = 12.15L / Min = 729L / H

[0032] (1), Q acid=10.4L / Min=621L / H, acidic ion water PH=2.9

[0033] (2), Q base=1.7L / Min=102L / H, alkaline ionized water PH=11.4

[0034] (3), Q acid+Q base=Q acid-base mixed ion water, its PH=8.8

[0035] B. (1) PH2.9 acidic ionized water / liter + 4.5 g / liter oxalic acid = pH1.4 acidic ionized water (note 19#-1)

[0036] (2)PH8.8 acid-base mixed ion water / liter+4.5g / liter oxalic acid=PH1.5 acidic ion water (note 19#-2)

[0037] 3. To prepare acidic...

Embodiment 3

[0053] Example [3]: An implementation example of a new in-situ extraction process where activated ionized water replaces pure oxalic acid and biological acid replaces thiamine. Using the formula and process of the present invention, we conducted an extraction comparison experiment on an ion-type rare earth ore in a certain place in northern Guangdong. The results of this experiment will be published later. Among them, there are several abbreviations that need to be explained in advance: HOH means activation. HOH water is the activated ionized water generated by adding additives to electrolyzed water. HOH acid: Refers to active biological acid. The number definitions of the two extractants are given in the report:

[0054] HOH-XT-2014-NOC-18, referred to as 18# extractant, essentially uses activated acidic ionized water instead of oxalic acid as the mother liquor precipitant.

[0055] HOH-XT-2014-BIO-019, referred to as 19# extraction agent, essentially refers to the use of...

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Abstract

The invention discloses an extracting solution and a precipitator formula for improving an existing ion type rare earth in-situ leaching mining method and a technology thereof. Microorganism acid is used for replacing ammonium sulfate and serves an extracting agent of a leaching technology; activated ion water is used for replacing oxalic acid and serves as a precipitator for mother liquid subjected to leaching. Strong-alkaline water produced by preparation of activated ion water is used as a neutralizing agent for purifying sewage produced in the technical process so as to reproduce the microorganism acid and realize re-electrolysis and can be repeatedly used, so that zero emission of sewage is realized; the new preparation, namely microorganism acid and the activated ion water in the novel technology are environment-friendly substances and are harmless to human, water sources and plants; meanwhile, the production cost is reduced, the mining efficiency and the resource utilization rate are improved, and the method is an entirely new green and environment-friendly ion type rare earth collection technology.

Description

technical field [0001] The invention relates to a rare earth mining technology, in particular to a new process for improving the ion-type rare earth in-situ leaching method by using activated ion water and microbial acid. Background technique [0002] Rare earth is composed of 15 elements in the lanthanide elements in the periodic table of chemical elements plus two other elements related to it, a total of 17 elements, namely: 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), Yttrium (Y) and Scandium (Sc). Referred to as rare earth (RE or R). [0003] Rare earths have a wide range of uses and are extremely important. They are industrial "vitamins" and are widely used in the metallurgical industry, petrochemical industry, glass ceramic industry, new materials, agriculture, and military cutting-ed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B59/00C22B3/18
CPCY02P10/20
Inventor 朱上翔徐海双曾文威
Owner 朱上翔
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