Preparation method of Ti-Mn-diffusion titanium anode plate for electrolytic manganese dioxide
A technology of electrolytic manganese dioxide and anode plates, which is applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of single-cell output decline, high production energy consumption, high cell voltage, etc., achieve high single-cell output, improve resistance Good denaturation ability and product quality
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Embodiment 1
[0024] With the new pure titanium anode plate as the substrate, after pretreatments such as pressing, shaping, sandblasting, degreasing, pickling, cleaning and drying, each surface is sprayed with manganese powder after high-pressure jet milling and high-energy ball milling. The mixture of the final highly active micro / nano titanium hydride powder (the mass ratio of the two is 95:5) and the water (30wt%) solution of gum arabic (0.2wt%), degumming at 200 ℃ for 6 hours under vacuum condition after drying , held at 530°C for 1.5 hours for dehydrogenation, then held at 1300°C for 0.2 hours for sintering, and then cooled with the furnace to room temperature under vacuum. The surface of the titanium anode plate treated by the above manganese infiltration technology is smooth, without macro and micro cracks, and the particles of the infiltrated layer are fine; the metallographic observation results show that the microstructure of the infiltrated layer is uniform, and a good metallurgi...
Embodiment 2
[0027] In this embodiment, a new pure titanium anode plate is used as the substrate, and the pretreatment is the same as that in Embodiment 1.
[0028]Each surface of the new pure titanium anode plate is sprayed with a mixture of manganese powder processed by high-pressure jet milling and high-activity micro / nanometer titanium hydride powder (the mass ratio of the two is 98: 2) and gum arabic ( 0.5wt%) water (30wt%) solution, after drying, degumming at 300°C for 2 hours under vacuum conditions, dehydrogenation at 500°C for 1.5 hours, and then sintering at 1100°C for 1 hour, and finally with the furnace under vacuum Cool to room temperature and serve. The surface of the titanium anode plate treated by the above manganizing technology, the particle size of the infiltrating layer, the metallographic observation results and the mechanical properties are all similar to those of Example 1. The curves of cell pressure changing with time and figure 1 , figure 2 similar.
Embodiment 3
[0030] In this embodiment, a new pure titanium anode plate is used as the substrate, and the pretreatment is the same as that in Embodiment 1.
[0031] The mixture (mass ratio of 96.5: 3.5) and gum arabic (0.2 wt%) in water (30wt%) solution, degummed at 270°C for 4 hours under vacuum conditions after drying, dehydrogenated at 580°C for 1.2 hours, and then sintered at 1150°C for 1 hour. Subsequently, it was cooled to room temperature under the protection of argon and released from the furnace. The surface of the titanium anode plate after the above manganizing treatment is smooth, without macro and micro cracks, and the particles of the infiltrated layer are fine; the metallographic observation shows that the microstructure of the infiltrated layer is uniform, and forms a good metallurgical bond with the substrate. The mechanical properties of the anode plate are as follows: Table 1 is similar.
[0032] Anode passivation test condition is the same as embodiment 1, obtains the...
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