Positive lead cream of valve-controlled sealed plumbous acid accumulator for starting vehicle and production thereof
A technology for lead-acid batteries and car starting, which is applied in electrode manufacturing, battery electrodes, circuits, etc., and can solve the problems of low utilization of positive active materials, limited battery life, and low utilization of active materials.
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Embodiment 1
[0022] Example 1: Add 100kg of lead powder with a PbO content of 75% to 85% into the paste mixer, add 0.05kg of fiber and 0.3kg of high-purity natural graphite powder at the same time, stir the above materials evenly, and then add 10kg of purified water , after mixing evenly in the wet state, the rapid pouring density is 1.400g / cm 3 (25°C) sulfuric acid solution 10kg, during the mixing process, control the temperature of the paste at 75°C-85°C, keep it for 10-20 minutes until the reaction is uniform, take measures to cool down, and the temperature drops below 45°C, and the paste can be used.
Embodiment 2
[0023] Embodiment 2: 100kg PbO content is that 75%~85% lead powder is added in the plaster making machine, add the fiber of 0.06kg, the high-purity natural graphite powder of 0.1kg at the same time, above-mentioned materials are stirred evenly, then add 12kg of purified Water, after mixing evenly in wet state, pour in quickly with a density of 1.400g / cm 3 (25°C) sulfuric acid solution 8kg, control the paste temperature 75°C-85°C during the mixing process, keep 10-20min after the reaction is uniform, take cooling measures, the temperature drops below 45°C, and the paste can be used.
Embodiment 3
[0024] Embodiment 3: 100kg PbO content is that 75%~85% lead powder is added in the plaster mixing machine, add the fiber of 0.055kg, the high-purity natural graphite powder of 0.2kg simultaneously, above-mentioned materials are stirred, then add 11kg of purified Water, after mixing evenly in wet state, pour in quickly with a density of 1.400g / cm 3 (25°C) sulfuric acid solution 9kg, control the paste temperature 75°C-85°C during the mixing process, keep for 10-20min after the reaction is uniform, take cooling measures, the temperature drops below 45°C, and the paste can be used.
[0025] The high-purity graphite powder used in the above-mentioned embodiments is that the natural flake graphite is screened to remove impurities, and then washed, separated, and dried to obtain the graphite powder with the required purity. Its purity is ≥99.85%; the residue on ignition is ≤0.15%; at least 90% of the particle size is between 30 μm and 65 μm.
[0026] Apply the positive lead paste pr...
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