Electrochemical induced mineral deposition system and method

A deposition system and electrochemical technology, applied in the field of electrochemical deposition, can solve problems such as complex and uncontrollable influencing factors, and achieve the effects of controllability, flexible types, and designability

Active Publication Date: 2019-09-17
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few relevant studies on electrochemically induced mineral deposition, and most of the experimental studies are carried out in the actual marine environment, and the influencing factors are complex and uncontrollable. Therefore, it is necessary to carry out in-depth research on the electrochemically induced mineral deposition technology in simulated seawater in the laboratory.

Method used

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  • Electrochemical induced mineral deposition system and method
  • Electrochemical induced mineral deposition system and method
  • Electrochemical induced mineral deposition system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Select MgCl with a concentration of 0.0125mol / L 2 The solution is an electrolyte solution; the anode material is a ruthenium iridium titanium rod with a diameter of 3mm, the anode material is a 304 stainless steel rod with a diameter of 5mm, the distance between the control cathode and the anode is 40mm, and the depth of the control electrode immersion in the liquid surface is 60mm; external power supply selection Stabilized DC power supply, using constant current mode, the current size is set to 5mA; test the magnesium ion concentration and pH value in the solution every 12h, by adding MgCl 2 and NaOH control the electrolyte concentration and pH to remain basically unchanged; the deposition time is set to 5d. The mass of the deposited product was 0.5649g, the thickness of the deposit was 1.12mm, and the growth rate of the deposit on the cathode was 103.86g·d -1 m -2 .

Embodiment 2

[0049] The seawater solution in the south coast of Qingdao City, Shandong Province is selected as the electrolyte solution; the anode material is a ruthenium iridium titanium rod with a diameter of 3 mm, and the anode material is a 304 stainless steel rod with a diameter of 5 mm. The distance between the control cathode and the anode is 40 mm, and the electrode is immersed in the liquid The surface depth is 60mm; the external power supply is a regulated DC power supply, and the constant current mode is adopted, and the current is set to 5mA; the seawater is replaced every 12h, and the electrolyte concentration and pH are basically kept unchanged; the deposition time is set to 5d. The mass of the deposited product was 0.9185g, the thickness of the deposit was 1.98mm, and the growth rate of the deposit on the cathode was 134.89g·d -1 m -2 .

Embodiment 3

[0051] Select MgCl 2 The concentration is 0.05mol / L and CaCl 2 A mixed solution with a concentration of 0.01mol / L is used as the electrolyte solution; the anode material is a ruthenium iridium titanium rod with a diameter of 3 mm, and the anode material is a 304 stainless steel rod with a diameter of 5 mm. The distance between the cathode and the anode is controlled to be 40 mm, and the electrode is immersed in the liquid The surface depth is 60mm; the external power supply selects a regulated DC power supply, adopts the constant current mode, and the current size is set to 20mA; the magnesium ion concentration and pH value in the solution are tested every 12h, and the concentration of magnesium ions in the solution is tested by adding MgCl 2 , CaCl 2 and NaOH control the electrolyte concentration and pH to remain basically unchanged; the deposition time is set to 5d. The mass of the deposited product was 2.2941g, the thickness of the deposit was 3.16mm, and the growth rate ...

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Abstract

The invention relates to an electrochemical induced mineral deposition system and method. The deposition system comprises a container for containing an electrolyte solution, an electrode bearing plate fixedly arranged on the container and suspended above the electrolyte solution, a stirring assembly which is arranged on the container and has a stirring end arranged in the electrolyte solution and has an adjustable rotating speed, and a cathode material and an anode material which are movably arranged on the electrode bearing plate and partially arranged in the electrolyte solution, wherein the cathode material and the anode material are connected with an external power supply through leads. Compared with the prior art, the electrochemical induced mineral deposition system and method can realize the flexible design of the structure of deposited mineral material, accurate control of influencing factors in the induced deposition process and controllability of the performance of the deposited mineral material, thereby further realizing the deep research on electrochemical induced mineral deposition technology, and laying a solid foundation for the application of the technology in the marine environment.

Description

technical field [0001] The invention belongs to the technical field of electrochemical deposition, and relates to an electrochemically induced mineral deposition system and method. Background technique [0002] Since the electrochemical deposition technology was proposed in the early 19th century, it has been widely researched and applied in the fields of metal preparation and processing, nano and thin film materials preparation, etc. In recent years, the application range of electrochemical deposition technology has gradually expanded to special environments such as the ocean. The abundant mineral resources in the ocean provide rich and convenient raw materials for the application of electrochemical deposition technology. There have been studies on the use of electrochemical deposition technology to induce mineral deposition in the marine environment to form insoluble sediments such as magnesium hydroxide and calcium carbonate. Thereby completing the repair of the cracks in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/20C25B9/06C25B11/02C25B11/04C25B15/00C25B9/17
CPCC25B1/20C25B11/02C25B11/04C25B15/00C25B9/17
Inventor 蒋正武周淦李斌陈庆
Owner TONGJI UNIV
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