Electric heating roasting preheating electrolytic bath and cleaning and roasting method

An electrolytic cell and electric heating technology, which is applied in the field of electrolytic cells, can solve the problems of cathode carbon block layer peeling, poor operating environment, and high labor intensity, and achieve the effects of reducing roasting costs, simplifying operations, and reducing labor intensity

Active Publication Date: 2012-09-05
YUNNAN RUNXIN ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using this roasting method to preheat and start, because the high-temperature electrolyte enters the roasting tank and directly contacts the cathode carbon block, it will cause a large thermal shock to the cathode carbon block, which will easily cause layered peeling of the cathode carbon block. Heating resistance requires coke laying, soft connection and shunt installation, which is labor-intensive, costly, and poor operating environment

Method used

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  • Electric heating roasting preheating electrolytic bath and cleaning and roasting method
  • Electric heating roasting preheating electrolytic bath and cleaning and roasting method
  • Electric heating roasting preheating electrolytic bath and cleaning and roasting method

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Effect test

Embodiment 1

[0038] The electric heating roasting and preheating electrolytic cell provided by the present invention includes a cell body 1 and a cathode carbon block 2 fixed at the bottom of the cell body 1 and an artificial extension leg 8 around the cathode carbon block 2, as well as a cell body 1 capable of raising and lowering Anode 4, below the anode 4, the gap cavity 14 between the anode 4, the side cavity 11 between the anode 4 and the tank 1 is movably provided with an electric heating element, the electric heating element is a hollow straight stainless steel tube 9 and The hollow L-shaped stainless steel tube 5, the resistance wire 15 is placed in the stainless steel tube, and the lead out of the tube is electrically connected with the conventional electric control device of the prior art. The specific setting of the electrically heated stainless steel tube is: the vertical of the L-shaped stainless steel tube 5 The straight end 53 is provided with a handle 51, the lower part of th...

Embodiment 2

[0041] The method for clean roasting and preheating of the electric heating roasting and preheating electrolytic cell provided by the present invention goes through the following steps:

[0042] A. Install the anode 4 above the cathode carbon block 2 in the tank 1, and ensure that the anode 4 is in good contact with the horizontal bus, and the small box clamp is in a tight state;

[0043] B. Lift the anode 4, and spread cryolite 3 with a thickness of 20mm on the surface of the cathode carbon block 2 and the artificial leg 8;

[0044] C. Install multiple L-shaped electrically heated stainless steel tubes 5 between the cathode carbon block 2 and the anode 4 according to Example 1. After installation, appropriately reduce the height of the anode 4, and ensure that the L-shaped electrically heated stainless steel tube 5 and the cathode carbon block Keep a distance of 30mm between 2 and the anode 4; then install multiple straight electrically heated stainless steel tubes 9 in the slot cav...

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Abstract

The invention provides an electric heating roasting preheating electrolytic bath and a cleaning and roasting method. The electric heating roasting preheating electrolytic bath comprises a bath body, a cathode carbon block fixed at the bottom of the bath body, artificial extending legs arranged on the periphery of the cathode carbon block and an anode for lifting in the bath body. The electric heating roasting preheating electrolytic bath is characterized in that electric heating elements are movably arranged below the anode, an intermediate clearance cavity between anodes and a side part cavity between the anode and the bath body and are used for finishing the roasting and the heating of the electrolytic bath. The invention not only has uniform roasting temperature, high energy utilization rate and low electric consumption, but also can realize the automatic control of temperature raising speed, greatly improve the roasting effect, reduce the labor intensity and the roasting cost, simplify the operation and realize the low-carbon roasting. In addition, the invention can reduce the carbon content of electrolyte, avoid a starting bath from generating carbon-containing accidents, enable a roasting bath to be turned into normal production and generate relatively profound effect on improving the roasting method of the electrolytic bath in the further and improving the utilization rate of energy sources and resources, and has broad popularization and application potentials.

Description

Technical field [0001] The invention relates to an electrolytic cell, in particular to an electric heating roasting and preheating electrolytic cell, and also relates to a roasting and preheating method of the electrolytic cell, belonging to the technical field of electrolysis. technical background [0002] The Copenhagen Climate Change Conference in 2009 proposed to the world for the first time an economic model based on low energy consumption, low pollution and low emissions-a "low carbon economy". Today, the development of a "low-carbon economy" has become the consensus of all countries in the world, and advocating low-carbon consumption has become a new way of life for people. In our country, ecological and environmental protection and sustainable development have become the theme of current economic development. In particular, to fully implement energy conservation and emission reduction, we must vigorously develop low-carbon technologies. In industrial production, energy c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/08
Inventor 杨万章杨金星苏其军
Owner YUNNAN RUNXIN ALUMINUM
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