Unlock instant, AI-driven research and patent intelligence for your innovation.

The structure of the anode carbon block group to reduce the resistance

A technology of anode carbon block and resistance, which is applied in the field of anode carbon block group structure, can solve problems such as the formulation of conductive paste and the process of preparing and casting conductive paste, and achieve good bonding ability, reduce anode pressure drop, and prevent pores small effect

Active Publication Date: 2016-06-22
GUIYANG AL-MG DESIGN & RES INST
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is no mention of the formula, preparation and casting process of the conductive paste

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • The structure of the anode carbon block group to reduce the resistance
  • The structure of the anode carbon block group to reduce the resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: The upper part of the anode carbon block group is an aluminum guide rod 1, and the lower part is connected with an aluminum-steel explosion welding block 2, an anode steel claw 3 and an anode carbon block 6. There is a carbon bowl on the upper part of the carbon block 6, the anode steel claw 3 extends into the carbon bowl, the phosphorus pig iron ring 4 is located between the anode steel claw 3 and the carbon bowl, and the contraction gap between the phosphorus pig iron ring 4 and the carbon bowl is generally 0.1-0.4mm . First, blast the surface of the phosphorus iron ring to roughen it, and then spray a layer of boron carbide coating 5 between the phosphorus pig iron ring 4 and the inner wall of the carbon bowl by using a plasma spraying method. The thickness of the coating can reach 0.1-1.5mm. Since the plasma spraying process is a known spraying process in the prior art, technicians can select appropriate process parameters according to the specific co...

Embodiment 2

[0012] Embodiment 2: Between the phosphorus pig iron ring 4 and the inner wall of the carbon bowl, a layer of iron-based amorphous alloy coating 5 is sprayed by thermal spraying technology. The thermal spraying material used in the thermal spraying process is iron-based thermal spraying drug core wire or iron-based thermal spraying powder. The method for preparing the thermal spraying material is well known to those skilled in the art, and the skilled person can choose an appropriate method according to the specific conditions of the desired coating.

Embodiment 3

[0013] Embodiment 3: Between the phosphorus pig iron ring 4 and the inner wall of the carbon bowl, a layer of iron-based amorphous alloy coating 5 is sprayed by arc spraying technology. This method can use twin-wire arc spraying equipment, after melting the drug core wire, use compressed air to atomize it into liquid droplets to accelerate deposition on the phosphorus pig iron ring 4, and use the rapid cooling effect of the phosphorus pig iron ring 4 to directly form an amorphous nano-coating 5 . Technicians can select appropriate process parameters according to the specific conditions of the desired coating.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a structure for reducing the resistance of an anode carbon block group. The upper part of the anode carbon block group is an aluminum guide rod (1), and the lower part is connected with an aluminum-steel explosive welding block (2), an anode steel claw (3) and an anode carbon block (6), and the upper part of the carbon block (6) has a carbon bowl , the anode steel claw (3) extends into the carbon bowl, and phosphorus pig iron is used between the carbon bowl of the anode carbon block (6) and the steel claw (3) to cast a phosphorus pig iron ring (4), which is characterized in that: in the phosphorus pig iron ring ( 4) There is a coating (5) between the shrinkage gap and the inner wall of the carbon bowl of the carbon block (6); the coating (5) is a boron carbide coating or an iron-based amorphous alloy coating. The boron carbide coating is sprayed using plasma spray technology. The iron-based amorphous alloy coating is sprayed by thermal spraying technology, plasma spraying technology, or arc spraying technology. The coating thickness is 0.1~1.5mm. The structure can effectively reduce the contact resistance between the phosphorus iron ring and the carbon block, and reduce the anode voltage drop.

Description

technical field [0001] The invention relates to an anode carbon block group structure for aluminum electrolysis. Background technique [0002] During the aluminum electrolysis process, the current enters the electrolyte melt through the anode carbon block group, and then flows out through the cathode. The anode carbon block group consists of five parts: aluminum guide rod, aluminum-iron explosive welding block, steel claw, phosphorus pig iron casting ring and anode carbon block. The phosphorus pig iron ring is formed by casting phosphorus-containing molten iron in the gap between the carbon bowl of the anode and the steel claw and cooling it. It mainly plays the role of connecting the steel claw and the carbon block and conducting electricity. Due to the difference in the thermal expansion coefficient of iron and carbon and the rapid volume shrinkage of molten iron after cooling, a certain gap will be formed between the phosphorus pig iron ring and the carbon bowl, resultin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/12
Inventor 王紫千
Owner GUIYANG AL-MG DESIGN & RES INST