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Views: 24 Author: Site Editor Publish Time: 2021-09-15 Origin: Site
17.Will the dust collection system on the EAF affect the consumption of electrodes?
The fan used in the dust collection system generates a certain negative pressure during work, which increases the air flow rate around the red hot electrode during steelmaking, which also increases the oxidation consumption of the electrode. In steelmaking, a well-adjusted dust collection system not only maintains a good working environment, but also makes the consumption of electrode stable..
18.How to avoid the increase of electrode consumption during teelmaking?
To avoid the increase of electrode consumption during steelmaking, the following should be done: (1) Maintain a good power supply state, and deliver electricity within the range of electrode current intensity according to the design requirements of the electric furnace. (2) Prevent the arc starting point from being immersed in the molten pool. (3) Prevent the electrode from being immersed in molten steel to increase carbon. (4) If conditions permit, the electrode adopts spray cooling technology. (5) Set up a correct exhaust emission system. (6) Use the correct oxygen blowing system.
19.How long does the production cycle of graphite electrodes take?
The process and corresponding time for the production of a batch of ultra-high-power or high-power graphite electrodes are as follows: electrode pressure type (3 days)——roasting (25 days)——impregnation (4 days)——re-roasting (15 days)——Graphitization (10 days)——Machining & quality inspection (2 days)——Finished product packaging and delivery (1 day), that is, from feeding to product shipment, the fastest cycle of non-stop production is also 60 days. However, since the production of electrode nipples requires more two-immersion and three-baking treatment than electrodes, the fastest production cycle is 90 days.
20. What are the characteristics of electrodes produced by tandem graphitization furnaces?
The development direction of graphitization furnace is internal heat tandem graphitization furnace. Because the current density of the series connection column is the same, the difference of the electrode resistivity is very small; secondly, the resistivity at both ends of the inner series graphitized product is slightly lower than the middle part (the Acheson furnace graphitized product has a higher resistivity at both ends than the middle part). It is beneficial to reduce the resistance of the connection in usage, and alleviate the overheating and redness of the nipple. Therefore, the electrode quality uniformity produced by the tandem graphitization furnace is better than that of the Acheson furnace, and it is more suitable for the production of EAF steelmaking.
