Lead-acid battery dismantling equipment and process

The battery is also called lead-acid battery. It contains more than 70% of lead plates and 20% of acid, so it can convert chemical energy into electrical energy. As a zero-emission, low-noise, rechargeable green energy source, batteries have long been widely used in all fields of life. The battery is scrapped after one or two years of use. How to deal with a large number of scrapped batteries? The battery dismantling machine is a device for dismantling scrapped batteries. The battery cover can be cut, the battery shell is cut neatly, the battery lead and the battery shell are separated, and the battery cover, the battery shell and the lead block are output separately.

The waste lead recovery technology for waste lead-acid batteries is generally divided into three types: pyrometallurgy process, hydrometallurgy process, and solid-phase electrolysis process.

1. Pyrometallurgy process

Reduction smelting is mainly used for pyrolysis of waste lead-acid batteries. In addition to reducing agents, fluxes such as iron filings, sodium carbonate, limestone, quartz and fluorite can also be added to the smelting process.

2. Hydrometallurgy process

The battery fragments obtained after dismantling and pretreatment of waste lead-acid batteries are a mixture of metal lead, lead oxides, lead salts and other metals such as copper, silver, and arsenic.

Hydrometallurgical technology, also known as electrolysis, selectively reduces all lead compounds in battery fragments to metallic lead by the action of electricity. Its main feature is that there is no waste gas and waste residue in the smelting process, and the recovery rate of lead can reach 95~97%.

The working principle of the hydrometallurgical technology is to add a reducing agent to the solution, and the reducing agent in the lead reduction process can be configured with iron and steel pickling wastewater to achieve the purpose of "using waste to treat waste".

3. Solid-phase electrolysis process

The solid-phase electrolysis process uses sodium hydroxide aqueous solution as the electrolyte, the cathode and anode are made of stainless steel plates, and the solid-phase leaded substance molecules in the lead paste during electrolysis are used to obtain electrons from the cathode surface and reduce to metallic lead.

The above is a brief introduction to the current situation and process of waste lead-acid battery recycling made by SUNY GROUP. Waste lead-acid batteries have high lead content, and their recycling has strong economic and environmental benefits.