Raw Materials for Lead Acid Battery New Analysis

News 2023年2月24日 166

Which kind of lead is fit for a lead acid battery?

Electrolytic lead: PB 99.99%min

lead plate
lead plate

Reduced lead: It is obtained by re-smelting waste lead as raw material. The PB content is usually around 96%~98%. It can also be used as a raw material for the production of electrolytic lead.

Secondary lead: The amount of lead used in batteries accounts for a large proportion of lead consumption, so waste batteries are the main raw materials for recycled lead. In some countries, secondary lead production accounts for more than half of the total lead production. Secondary lead is mainly produced by smelting waste batteries. For example, when dealing with waste batteries, it is usually mixed with 8-15% crushed coke, 5-10% iron filings, and an appropriate amount of flux such as lime and soda, and is smelted into the rough lead in a reverberatory furnace or other furnaces.

Lead concentrate: After the ore is sorted through an economical and reasonable beneficiation process, its main useful components are enriched and become concentrate, which is the final product of the beneficiation plant. The content of the main useful components in the concentrate is called the concentrate grade. Some concentrate grades are expressed by weight percentage (such as copper, copper, zinc, etc.), and some are expressed by weight ratio (such as gold ore is expressed in grams/ton). It is an indicator that reflects the quality of the concentrate and is also a parameter for formulating the beneficiation process.

The sister company zxferroalloy supplies high-purity raw materials.

Lead-lead-acid battery (VRLA)

Lead-lead-acid battery (VRLA) is a battery whose electrodes are mainly made of lead and its oxides, and the electrolyte is sulfuric acid solution. In the discharge state of the lead-acid battery, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in the charging state, the main component of the positive and negative electrodes is lead sulfate. The nominal voltage of a single-cell lead-acid battery is 2.0V, which can be discharged to 1.5V and charged to 2.4V; in applications, six single-cell lead-acid batteries are often connected in series to form a nominal 12V lead-acid battery , There are 24V, 36V, 48V and so on.

Caloong New Energy used the first-grade lead. (Pb99.99%min)

The features of lead acid battery

In addition to lithium batteries, commonly used rechargeable batteries, lead-acid batteries are also a very important battery system. The advantage of lead-acid batteries is that the electromotive force is relatively stable during discharge, but the disadvantage is that the specific energy (electric energy stored per unit weight) is small and it is highly corrosive to the environment. Lead-acid batteries have stable working voltage, wide range of operating temperature and operating current, can charge and discharge hundreds of cycles, good storage performance (especially suitable for dry charging storage), and low cost, so they are widely used.

lead acid battery
lead acid battery

Lead battery (Lead–acid battery): Its size and weight have not been effectively improved, so it is most commonly used in cars and motorcycles. The biggest improvement of the lead-acid battery is the recent use of high-efficiency oxygen recombination technology to complete water regeneration, so as to achieve the purpose of complete sealing without adding water, and the resulting “water-free battery” has a lifespan of up to 4 years (single battery) plate voltage 2V).

Lead-acid battery has a history of more than 150 years since it was invented by Plant in 1859. The technology is very mature and it is the most widely used chemical power source in the world. Although new batteries such as nickel-cadmium batteries, nickel-metal hydride batteries, and lithium-ion batteries have been introduced and applied in recent years, lead-acid batteries still rely on high-current discharge performance, stable voltage characteristics, wide temperature range, and large single-cell capacity. A series of advantages such as high safety, abundant and renewable raw materials, and low price occupy a firm position in most traditional fields and some emerging application fields.