A kind of process method of in-situ leaching ore injection of ionic rare earth ore

The invention relates to an ionic rare earth ore and a process method, which are applied in the field of in-situ leaching and liquid injection of ionic rare earth ore, and can solve problems such as the recovery rate of rare earth from geological disasters, and achieve the advantages of improving labor productivity, reducing leaching time, and reducing production costs. Effect

Active Publication Date: 2022-05-24
JIANGXI IONIC RARE EARTH ENG RES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the present invention provides a process method for in-situ leaching ore injection of ion-type rare earth ore to solve the problem that the existing in-situ leaching method of ion-type rare earth ore is prone to underground runoff causing geological disasters and low recovery rate of rare earth

Method used

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  • A kind of process method of in-situ leaching ore injection of ionic rare earth ore
  • A kind of process method of in-situ leaching ore injection of ionic rare earth ore
  • A kind of process method of in-situ leaching ore injection of ionic rare earth ore

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Embodiment 1

[0035] This embodiment provides a process method for in-situ leaching and liquid injection of ionic rare earth ore, such as Figure 1-3 As shown, the process method includes the following steps:

[0036] S1. Drilling: Drill a plurality of lateral injection holes 3 at intervals on the 4 sides of the ionic rare earth ore body. the center of the ore body 4; a plurality of the lateral liquid injection holes 3 are distributed in multiple layers in the height direction of the ore body 4, and the plurality of lateral liquid injection holes 3 located in the same layer are distributed at intervals in the horizontal direction;

[0037] S2. Intubation: insert a rigid elongated object into each of the lateral liquid injection holes 3, and then insert a connecting pipe 12 into the lateral liquid injection hole 3 along the rigid elongated object;

[0038] S3. Liquid injection and leaching: inject the leaching agent into the lateral liquid injection hole 3 through the connecting pipe 12, th...

Embodiment 2

[0042] As in the process method described in Embodiment 1, the process method further includes a purification step S5 after the step S4: the rare earth leachate collected in the step S3 and the rinsed water collected in the step S4 are subjected to a purification and enrichment process, and processed into rare earth products.

[0043] In the leached water collected in step S4, some of the leached water contains a relatively high concentration of rare earths, and this part of the leached water with a relatively high concentration of rare earths is subjected to a purification and enrichment process, and some of the water after leaching has a relatively low concentration of rare earths, This part of the leaching water with a lower concentration of rare earth is returned to prepare the leaching agent.

[0044] The purification and enrichment process may include a separation step of separating the leaching agent and the water after leaching, and the rare earth primary product can b...

Embodiment 3

[0046] Process method as described in embodiment 1, as Figure 1-3 As shown in the figure, the horizontal injection holes 3 of the upper and lower adjacent layers are staggered; the vertical distance between the horizontal injection holes 3 of the upper and lower adjacent layers is 3-5 meters, and the horizontal injection holes of the same layer The horizontal distance between two adjacent lateral injection holes 3 in 3 is 3-5 meters; the distance between the lateral injection holes 3 located on the bottom layer and the bottom of the ore body 4 is 4-6 meters;

[0047] The depth of the lateral liquid injection holes 3 in each layer covers the lower ore body, the lateral liquid injection holes 3 are slightly inclined downward along the extending direction, and the diameter of the lateral liquid injection holes 3 is 80-120 mm.

[0048] The horizontal spacing of the lateral injection holes 3 is determined according to the density of the ore soil. The loose spacing of the ore soil ...

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Abstract

The invention discloses a process method for in-situ leaching ore injection of ion-type rare earth ore. The process method includes the following steps: S1. Drilling: drilling a plurality of horizontal liquid injection holes at intervals on the side of the ion-type rare earth ore body, Horizontal liquid injection holes are arranged in the ore body horizontally, or point from the periphery of the ore body to the center of the ore body; multiple horizontal liquid injection holes are distributed in multiple layers in the height direction of the ore body, and multiple horizontal liquid injection holes located on the same layer Distributed at intervals in the horizontal direction; S2. Intubation: insert a hard strip into each horizontal injection hole, and then insert a connecting tube into the horizontal injection hole along the hard strip; S3. Mine: inject ore leaching agent into the horizontal liquid injection hole through the connecting pipe; S4. Water injection and rinsing: inject water into the horizontal liquid injection hole through the connecting pipe. The technical method of the invention arranges multi-layer horizontal liquid injection holes, pressurizes to adjust the flow rate, and controls the liquid injection in layers and segments; avoids runoff formed by the ore leaching agent and directly penetrates the ore body; and the rare earth leaching rate reaches more than 96%.

Description

technical field [0001] The invention relates to the technical field of rare earth mining, in particular to a process method for in-situ leaching and injection of ionic rare earth ore. Background technique [0002] Ionic rare earth is a unique mineral and a strategic material with high economic value. In order to protect the environment, the state only allows the mining method of in-situ leaching. This mining method is to punch vertical holes in the upper part of the ore body 4 and inject leaching agent. The rare earth-containing leachate is collected at the bottom of the ore body 4 . It is characterized by no excavation of mountains and no damage to vegetation, which belongs to the category of leaching mining. [0003] The rare earth elements of ionic rare earth ore are distributed in the completely weathered mountain rock and soil in ionic state. The thickness of rare earth ore body 4 ranges from a few meters to more than 20 meters, and a few are tens of meters. The upp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B59/00C22B3/02C22B3/04
CPCC22B59/00C22B3/02C22B3/04Y02P10/20
Inventor 李建中李华杰刘毛球王林生
Owner JIANGXI IONIC RARE EARTH ENG RES CO LTD
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