Exhaust funnel cleaning mode

Abstract

The invention relates to an exhaust funnel cleaning mode. The exhaust funnel cleaning mode comprises the following steps of 1, introducing waste water containing certain concentration of sulfuric acid or electrolysis waste liquor to the top of an exhaust funnel through a pipe; 2, spraying the waste water or the electrolysis waste liquor from top to bottom from the top of the exhaust funnel; and 3, making the waste water or the electrolysis waste liquor react with scales formed on the inner wall of the exhaust funnel, so that the scales fall off the inner wall and enter a reaction tank. The cleaning mode has the beneficial effects of being rapid, effective and safe.

Description

technical field [0001] The invention relates to a method of an exhaust cylinder, which belongs to the field of nonferrous metal smelting. Background technique [0002] The general technological process in a conventional hydrometallurgy enterprise is: zinc concentrate roasting-calcin leaching-supernatant purification-new liquid electrolysis-casting, etc. Among them, in order to discharge the gas in the reaction tank out of the factory building, there are exhaust devices such as exhaust pipes in the reaction tank. During the exhaust process of the exhaust cylinder, part of the calcine, zinc powder, etc. will enter the exhaust cylinder together with the steam, forming a layer of scaling on the inner wall of the exhaust cylinder, affecting the smooth flow of the exhaust cylinder. At present, the general method of cleaning the exhaust cylinder is to add a vibrator to the exhaust cylinder, and the scale is separated from the inner wall by regularly shaking the exhaust cylinder. T...

AI Technical Summary

Problems solved by technology

During the exhaust process of the exhaust cylinder, part of the calcined sand, zinc powder, etc. will enter the exhaust cylinder together with the steam, forming a layer of scaling on the inner wall of the exhaust cylinder, affecting the smooth flow of the exhaust cylinder

At present, the general method of cleaning the exhaust cylinder is to add a vibrator to the exhaust cylinder, and the scale is separated from the inner wall by regularly shaking the exhaust cylinder. This method increases the force of the exhaust cylinder, which leads to complex structural requirements for the exhaust cylinder. , can withstand the vibration of the vibrator. At the same time, due to the high height of the exhaust cylinder, safety accidents are prone to occur during long-term vibration. In addition, the vibration effect of the vibrator is not good, and it is difficult to clean the thick scale.