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Method for preparing metallic iron by utilizing soluble anode electrolysis

An anodic electrolysis and soluble technology, applied in the direction of electrolysis components, electrolysis process, electrodes, etc., to achieve the effect of reducing equipment requirements, saving production costs, and reducing raw material costs

Pending Publication Date: 2021-09-21
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing research starts with the cathode, and finally obtains metal element or alloy products through molten salt electrodeoxidation, while there are few studies on the use of anodes for molten salt electrolysis.

Method used

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  • Method for preparing metallic iron by utilizing soluble anode electrolysis
  • Method for preparing metallic iron by utilizing soluble anode electrolysis
  • Method for preparing metallic iron by utilizing soluble anode electrolysis

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0045] Example 1 A method for preparing metallic iron by electrolysis using a soluble anode

[0046] This embodiment is carried out according to the following sequence of steps:

[0047] 1. Preparation of soluble anode

[0048] Iron metal oxide Fe 2 o 3 with carbon in molar ratio n 1 :n 2=1:2 mixed, ground evenly, pressed into a cylinder by a press machine, placed in a high-temperature tubular reactor and heated to T at a heating rate of 8°C / min 1 =800℃, sintering t 1 =6h, make soluble anode;

[0049] For the soluble anode prepared after sintering, you can use a magnet to detect whether it is magnetic. If it is magnetic, it means that low-valent iron oxides are generated during the above preparation process, and low-valent iron oxides have excellent conductivity, so they meet the requirements of Standards for the preparation of soluble anodes of metallic iron;

[0050] Then, tie the standard soluble anode to the electrode rod with a thin iron wire and test the conducti...

Embodiment 2-4

[0070] Example 2-4 A method for preparing metallic iron by electrolysis using a soluble anode

[0071] The preparation process of embodiment 2-4 is substantially consistent with embodiment 1, and difference is the difference of specific parameter, and involved parameter is as shown in table 1 below:

[0072] The parameters of Table 1 Embodiment 2-4

[0073]

[0074] The U-t curve diagram in the preparation process of Example 2-4 has the same changing trend as the U-t curve diagram in the embodiment;

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Abstract

The invention discloses a method for preparing metallic iron by utilizing soluble anode electrolysis. According to the method, metallic oxide of iron and carbon are mixed and sintered by utilizing a molten salt electrolysis mode to prepare the soluble anode for electrolytic deposition to obtain the metallic iron, and the method mainly comprises the three steps of soluble anode preparation, electrolytic deposition and product treatment. The method for preparing the metal iron has the following advantages that no anode mud is generated, the reduction efficiency is high, the needed temperature is low, the process is simple, and the raw material adaptability is good. The invention belongs to the technical field of iron smelting and is used for preparing the metal iron through electrolysis.

Description

technical field [0001] The invention belongs to the technical field of iron smelting, and relates to a process for preparing iron by electrolysis, in particular to a method for preparing metallic iron by using soluble anode electrolysis. Background technique [0002] With the rapid development of industry, the demand for steel is increasing day by day, but the resources of high-grade iron ore are constantly shrinking. Therefore, the use of ore with complex components and low grade as raw material for ironmaking has become the focus of people's research. [0003] Blast furnace ironmaking is the main way to produce iron in modern times. It needs a large amount of coke as raw material in the production process. However, the supply of metallurgical coke for blast furnace ironmaking is becoming increasingly tight, and the production of metallurgical coke will emit harmful gases, which will bring A series of environmental issues such as global warming and the greenhouse effect. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/34C25C7/02
CPCC25C3/34C25C7/025
Inventor 李慧梁精龙严红燕王乐曹卫刚陈金李伟
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY