Slag scraping and slag breaking system for high-grade direct-method zinc oxide grate furnace

Abstract

The invention discloses a slag scraping and slag breaking system for a high-grade direct-method zinc oxide grate furnace. The system involves a slag scraping mechanism and a slag breaking mechanism; the slag scraping mechanism comprises eight slag scraping pieces on a grate, the two groups of slag scraping pieces are positioned on the two sides of the two ends of the grate and in the middle of thegrate correspondingly, the side slag scraping pieces located on the two sides are tightly attached to the furnace wall of the grate furnace, and the two groups of middle slag scraping pieces locatedin the middle and the side slag scraping pieces are installed on the same straight line in the transverse direction of the grate; and the slag breaking mechanism is located on the side, close to a driven roller, of the grate and is composed of a hollow shaft, hook hammers and a driving device, wherein a slag breaking driving reducer of the driving device is connected with a rotating shaft througha chain wheel, the middle of the rotating shaft is fixedly provided with a breaking hollow shaft in a sleeve mode, and the plurality of groups of hook hammers are arranged on the breaking hollow shaft. According to the system, the slag scraping pieces clear slag and wall-hanged matter on the wall of a furnace body so that the furnace body can maintain the normal effective smelting area, meanwhile,the slag scraping pieces break the slag, with the combination of a slag breaking device, the slag can be discharged from the furnace smoothly, and the production interruption caused by slagging and slag discharging problems of the furnace body is avoided.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal smelting, in particular to a slag scraping and slag breaking system for producing high-grade direct method zinc oxide grate furnaces. Background technique [0002] A production line for the production of high-grade direct-process zinc oxide, including a grate furnace body, a flue throat is provided in the middle of the furnace body, an oxidation chamber is connected to the exit of the flue throat, and a smoke lane is connected to the oxidation chamber, and the smoke lanes are respectively connected to Exhaust gas dust collection system and dust collection room, the dust collection room is connected to the cooling room, the cooling room is connected to the pulse dust collector, the pulse dust collector is connected to the desulfurization tower, there is an induced draft fan between the pulse dust collector and the desulfurization tower, and the desulfurization tower is connected to There ...

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Problems solved by technology

[0003] Usually, zinc, lead, iron, silicon, calcium, magnesium and other components are used as raw materials for the production of direct zinc oxide, and slagging occurs during the smelting process. Moderate slagging is required for the smelting process. Since smelting is static and fixed smelting, the entire The slag in the furnace body will form a whole piece, especially when it is red hot, the slag is hard and has a certain toughness. If no measures are taken to break it into small pieces, the slag may go away while the slag does not go or stuck in the slag process. If there are phenomena such as deadness and slippage, it is necessary to clean the slag in the furnace and cause production interruption; the steam generated by the reduction and volatilization of compounds such as zinc and lead in the pellet ore, and a small amount of condensation of compounds such as silicon and iron will also form wall hangings on the furnace wall. These two phenomena will be accompanied by the smelting process. Slag and wall hangings will hang in the furnace wall, affecting the effective smelting area in the furnace body. If it is not cleaned in time, the area in the furnace body will become smaller and smaller, and at the same time affect the smooth progress of the process such as feeding.

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