| 摘要 |
PURPOSE:To prevent the heating during kneading and prevent the nonuniformity of the paste composition from occurring by mixing the fine powder of lead sulfate with the raw powder using lead oxide as a main component then adding water and kneading them. CONSTITUTION:For the specification to obtain paste containing lead sulfate 10%, for example, lead powder 13.00kg and fine powder 1.20kg of lead sulfate having the average grain diameter of 0.8mum (grain size 8,000Angstrom ) are mixed. Water 1.50(l) of 30 deg.C is added, and they are kneaded for about 40min. Accordingly, the heating during kneading can be prevented, and the nonuniformity of the grain size and content of tribasic lead sulfate does not occur in the paste. |
