Fast cleaning agent used for cleaning dirt on surface of aluminum electrolysis anode rod

Abstract

The invention discloses a fast cleaning agent used for cleaning dirt on the surface of an aluminum electrolysis anode rod. The fast cleaning agent is prepared from the following components in percent by mass: 10-20% of alkali metal hydroxide, 0.5-3% of EDTA, 1-3% of sodium tripolyphosphate, 1-2% of sodium sulfate, 1-3% of thickener and the balance of water. The cleaning agent provided by the invention is colorless and sticky liquid, does not contain inflammable organic solvent, and is safe and environmentally friendly; the production cost is low, and the usage amount is small; and by adoptingthe fast cleaning agent, the oxide scales and dirt on the surface of the aluminum electrolysis anode rod can be fast cleaned, the voltage of the electrode and the electricity consumption of aluminum electrolysis can be obviously reduced, and the energy saving effect is remarkable.

Description

Technical field: [0001] The invention relates to a quick cleaning agent for removing dirt on the surface of an aluminum electrolysis anode guide rod, which belongs to the technical field of fine chemicals. Background technique: [0002] In the production process of aluminum electrolysis, due to the presence of impurities in the electrolyte and the oxidation of the electrodes during electrolysis, a layer of gray-black scale and dirt is easily produced on the surface of the anode guide rod. The existence of this layer of scale and dirt will cause the guide rod to The increase in resistance increases the energy consumption of the electrolysis process. In order to remove the oxide scale and dirt on the surface layer of the guide rod, some enterprises used to adopt the method of hard removal, that is, to remove the oxide scale and dirt on the surface layer of the guide rod by manual operation such as scrubbing with a wire brush. This method is labor-intensive, The removal effici...

AI Technical Summary

Problems solved by technology

[0002] In the production process of aluminum electrolysis, due to the presence of impurities in the electrolyte and the oxidation of the electrodes during electrolysis, a layer of gray-black scale and dirt is easily produced on the surface of the anode guide rod. The existence of this layer of scale and dirt will cause the guide rod The resistance increases, which increases the energy consumption of the electrolysis process

In order to remove the scale and dirt on the surface of the guide rod, some enterprises used to take the method of hard removal, that is, to use a wire brush to scrub the scale and dirt on the surface of the guide rod by manual operation. This method is labor-intensive. The removal efficiency is low, and alkaline cleaning solution is generally used for cleaning

Chinese patent CN1417385A discloses a method for descaling the surface of an electrolytic aluminum anode guide rod. The cleaning agent used is composed of alkaline hydroxide, sodium hexametaphosphate, surfactant, penetrant, ethanol, ethylene glycol monobutyl ether , triethanolamine and other components. Although this cleaning agent can remove the dirt on the surface of the anode guide rod, its formula uses a large proportion of flammable organic substances such as ethanol and ethylene glycol monobutyl ether. There are potential safety hazards in the cleaning process.

And because the anode guide rod is generally two to three meters high, the cleaning agent is easy to flow down from the surface of the guide rod during cleaning, so that a considerable amount of cleaning agent does not have a cleaning effect, which affects the removal effect of the dirt on the surface of the guide rod. Larger usage