Electrode water jacket for electric smelting furnace and installation method of electrode water jacket

Abstract

The invention provides a reasonable-design and long-service-life electrode water jacket for an electric smelting furnace and an installation method. The electrode water jacket for the electric smelting furnace comprises a water jacket protective sleeve, a water jacket head sealing cover, a water jacket head and a water jacket body, wherein the water jacket head is positioned above the water jacketbody, a protective pipe is arranged outside the water jacket body, the water jacket head sealing cover is positioned between the water jacket head and the protective pipe, the water jacket protectivesleeve sleeves the periphery of the water jacket head, a water inlet pipe and a water return pipe for cooling circulation are arranged in the water jacket body, and the water inlet pipe and the waterreturn pipe penetrate through the water jacket head sealing cover and are inserted into the water jacket head. The installation method comprises the following steps: processing a step hole in the position where the water jacket is mounted on an electrode brick; assembling the water jacket head sealing cover, the water jacket head, the water jacket body and the protective pipe into a whole body; lifting the assembled water jacket from the lower part so that the water jacket head is exposed out of the electrode brick; installing the water jacket protective sleeve and fixing the water jacket protective sleeve by using a pin shaft; and placing the water jacket protective sleeve and the assembled water jacket at the position corresponding to the step hole.

Description

technical field [0001] The invention relates to an electrode water jacket, in particular to an electrode water jacket for an electric furnace and an installation method. Background technique [0002] Glass furnaces are classified according to the nature of the energy used, and can be divided into flame furnaces, electric melting furnaces and all-electric melting furnaces. [0003] Among them, electric boosting and full electric melting furnaces basically use molybdenum electrodes as power-up devices, and most furnaces use cylindrical molybdenum electrodes for power-up. Because the molybdenum electrode has high-temperature oxidation characteristics in the air, the molybdenum electrode of the electric heating furnace needs a water jacket to protect the molybdenum electrode. [0004] During the use of the water jacket, the upper part of the water jacket head is in contact with the glass liquid, and the internal circulation pipe of the water jacket is filled with water to cool ...

AI Technical Summary

Problems solved by technology

[0005] However, during the long-term use, the electrode bricks are gradually eroded. When the kiln is used for about 3 years, the erosion reaches a certain level, and the part of the electrode brick near the center of the kiln is completely eroded, and the water jacket is basically exposed in the glass liquid. During the process, the protection of the refractory material is lost, and the temperature of the water jacket head rises. Because the glass liquid flows from top to bottom, the water jacket head is continuously washed and damaged, especially when the water jacket is cut off during operation. Phenomenon, the temperature of the head of the water jacket is higher, and the erosion of the head of the water jacket by the glass liquid is more serious, which eventually leads to water leakage inside the water jacket and damage to the water jacket

[0006] After the water jacket is damaged, the cooling cycle water pressure of the water jacket cannot be opened to the normal pressure. If the normal pressure is maintained, the water will enter the inside of the furnace glass liquid, forming a bubbling phenomenon, causing some unmelted batch materials to enter the lower part of the furnace, making the glass The deterioration of the liquid quality will seriously affect the product quality, so the pressure can only be reduced, so that the glass liquid will enter the water jacket cavity, the cooling part of the water jacket will move down, and the glass liquid will erode the electrode brick and the head of the water jacket more seriously; at the same time Due to the blockage of the cooling return water pipe when the glass liquid enters, in order to solve the blockage of the cooling return water pipe, the closed water jacket becomes an open water jacket, and the amount of water added increases, and the water will take away a lot of heat, which increases the unit energy consumption of the glass liquid. According to statistical data According to the analysis, the ratio of the energy consumption of melting a unit of molten glass when the water jacket is normal and when the water jacket is damaged is about 1:1.3

The final result of water jacket damage is shortened kiln life and increased unit energy consumption of the kiln

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