MANUFACTURING METHOD OF ACTIVE MATERIAL FOR LEAD ACID BATTERY

• Main Authors: KITAMORI SHIGETAKA, MUKAITANI ICHIRO, HATANAKA TOSHIKAZU, UEDA HIROMASA
• Format: Patent
• Language: English; Japanese
• Published: 12.12.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a manufacturing method that can efficiently manufacture a lead with a high degree of lead oxidation.SOLUTION: A lead powder mainly composed of lead monoxide and metal lead is heated at the first heating temperature, and a first heating step is performed to oxidize the metal lead in the lead powder, and the lead powder heated in the first heating step is heated at the second heating temperature, a second heating step is performed to lead-tan the lead powder. As the lead powder before heating in the first heating step, a powder produced by pulverizing metallic lead by a ball mill method is used. The first heating temperature is adjusted to be equal to or lower than the second heating temperature.SELECTED DRAWING: None 【課題】鉛丹化度の高い鉛丹を効率よく生産できる製造方法を提供する。【解決手段】一酸化鉛と金属鉛を主成分とする鉛粉を第１の加熱温度で加熱して、鉛粉中の金属鉛を酸化させる第１の加熱工程を実施し、第１の加熱工程で加熱した鉛粉を第２の加熱温度で加熱して、鉛粉を鉛丹化する第２の加熱工程を実行する。第１の加熱工程で加熱する前の鉛粉には、金属鉛をボールミル法により粉砕して生成されたものを用いる。第１の加熱温度は、第２の加熱温度以下に調整する。【選択図】 なし