Pipeline capable of being pre-buried in rare earth dump leaching field

Abstract

The invention discloses a pipeline capable of being pre-buried in rare earth dump leaching field. The pipeline is characterized in that the pipeline comprises a pipeline body, a three-dimensional hole net is arranged in the pipe wall of the pipeline body, and the three-dimensional hole net comprises a plurality of layers of transverse hole channel nets arranged at intervals in the axial direction of the pipeline body; the transverse hole channel nets comprise inner water seepage hole channel nets, middle hole channel nets and outer water seepage hole channel nets which are sequentially distributed from inside to outside; the inner water seepage hole channel nets comprise a plurality of inner water seepage holes which are evenly distributed in the circumferential direction of the pipeline body, one end of each inner water seepage hole communicates with the corresponding middle hole channel net, and the other ends of the inner water seepage holes are arranged on the inner wall of the pipeline body; the outer water seepage hole channel nets comprise a plurality of outer water seepage holes which are evenly distributed in the circumferential direction of the pipeline body, one end of each outer water seepage hole communicates with the corresponding middle hole channel net, and the other ends of the outer water seepage holes are arranged on the outer wall of the pipeline body; and the hole diameter of the inner water seepage holes, the hole diameter of hole channels in the middle hole channel nets and the hole diameter of the outer water seepage holes are gradually increased from the outer wall of the pipeline body to the direction close to the inner wall of the pipeline body. The pipeline has the functions of being capable of achieving reverse filtration and drip infiltration and not prone to blockage.

Description

technical field [0001] The invention relates to the technical field of drip leaching pipelines, in particular to a pipeline that can be pre-buried in a rare earth heap leaching field. Background technique [0002] The weathering crust elution-type rare earth ore is a unique precious resource in my country. The mine is mainly distributed in seven provinces of Jiangxi, Guangdong, Fujian, Hunan, Yunnan, Guangxi and Zhejiang. This type of rare earth ore has a wide distribution area, many types and rich reserves. , easy to extract, low cost and so on. In addition, the medium and heavy rare earth elements closely related to the high-tech and composite material industries in the weathering crust elution-type rare earth distribution account for more than 80% of the world's medium and heavy rare earth element reserves, effectively solving the world's shortage of heavy rare earths. Therefore, its development and utilization have a decisive impact on the world. [0003] The rare earth...

AI Technical Summary

Problems solved by technology

However, the current dripping equipment is easily blocked by the soil, and because both spraying and dripping methods need to be installed on the surface of the soil

[0005] The liquid distribution on the soil surface has the following disadvantages: (1) the liquid distribution on the top of the heap is easy to form a dense layer on the surface of the ore heap, making it difficult for the solution to penetrate into the ore heap and reduce the leaching rate; (2) the injection pressure will cause a large impact on the ore heap. Impact; (3) The liquid distribution aperture is large and easily blocked by soil

Therefore, it cannot effectively solve the problems of long leaching time and blind spots in the heap leaching field of rare earth

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