Grid distributing device for roasting of low resistance scorched particles
A distributing device and low-resistance technology, which is applied in the field of grid distributing devices for low-resistance coke grain roasting, can solve problems such as unfavorable coke grain scraping operation, affecting roasting effect, and poor laying quality, so as to improve roasting quality and improve laying quality. The effect of focus quality
Inactive Publication Date: 2012-07-11
王建军
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Problems solved by technology
Among them, due to the influence of the unevenness of the bottom of the anode, the laying of the frame method requires multiple leveling of the coke particles, which requires a large workload and poor laying quality, which affects the roasting effect; while the sieve plate method can reduce the difficulty of laying the coke particles and improve the roasting. effect, but the structure is complex, which is not conducive to on-site operation; in addition, the structure of the sieve plate method is not conducive to the current international development direction of coke grain roasting technology - the laying of low resistance coke grain layer
[0003] For example, in the patent ZL200520132098.2, the sieve plate type coke grain laying device is installed flat on the lower surface of the frame, so that the entire structure of the coke grain laying device is complicated, which is not conducive to scraping the excess coke grains on the sieve plate on site.
[0004] The structure in the patent ZL200820300457.4 is also relatively complicated, and the center distance of the holes on the grid plate is too large, and the legs are too high, which cannot realize the laying of the low-resistance coke layer (usually the thickness is less than 15mm); therefore, for the low-resistance coke layer Laying (thickness less than 15mm) needs to be redesigned
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[0017] For a 400KA electrolytic series, the anode carbon block size is 1650×700×600mm, and the low-resistance coke grain roasting method is adopted. The thickness of the coke grains to be laid is 12mm and the coke grains are 2-4mm. A 12mm thick formaldehyde phenolic resin plate is used to open 20mm holes, the center distance of the holes is 35mm, and the bottom support of the bracket is welded by 10mm coke tubes. The frame area is 1750×800mm, and the formaldehyde resin board is installed on the frame. Place the frame at the projection position of the anode at the cathode, spread the coke particles evenly on the resin plate, so that the holes are covered with coke particles, use a 30mm thick aluminum alloy square tube as a scraper, and push the excess coke material on the grid plate to one side , focus and set aside. Gently lift the frame (with the grid plate) and the char granules leak through the holes of the grid plate to form a small pile shape. After laying the material,...
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Abstract
The invention relates to a grid distributing device for roasting of low resistance scorched particles. The distributing device consists of a grid plate, a supporting frame for mounting the grid plate, and a scraper, wherein a plurality of grid holes are formed in the grid plate; the diameter of each grid hole is 15-25mm; and the center distance of every two adjacent grid holes is not greater than 2 times the diameter of each grid hole. In the device, the laying of a low resistance scorched particle layer is achieved by the reasonable allocation of the side thickness of the frame, and the diameter and the pitch of the holes of a sieve plate; in addition, the scorched particle laying quality and the scorched particle roasting quality are improved.
Description
technical field [0001] The invention belongs to the technical field of non-ferrous metal metallurgical aluminum electrolytic roasting, and in particular relates to a low-resistance coke particle roasting grid distribution device. Background technique [0002] The roasting of aluminum electrolytic cells mainly adopts the coke grain roasting method, that is, the coke grain layer is laid between the anode and the cathode as a resistance material to generate heat. Domestically, the frame method and the sieve plate method are usually used to pave the coke layer, but the above two methods have a certain scope of application. Among them, due to the influence of the unevenness of the bottom of the anode, the laying of the frame method requires multiple leveling of the coke particles, which requires a large workload and poor laying quality, which affects the roasting effect; while the sieve plate method can reduce the difficulty of laying the coke particles and improve the roasti...
Claims
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IPC IPC(8): C25C3/08
Inventor 王建军李玉臣刘海石闫艾清杜景龙
Owner 王建军