(1) heat treatment
After grinding the old battery, send it to the furnace for heating. At this point, the volatile mercury can be extracted. If the temperature is higher, zinc will evaporate, and iron and manganese will fuse to form ferromanganese alloy for steelmaking.
(2) "Wet treatment"
Various metals are extracted from the solution by ionic resin.
(3) Vacuum heat treatment method
Waste batteries are heated in vacuum, and the mercury in them quickly evaporates, so they can be recycled. Then, grinding the remaining raw materials, extracting metallic iron with a magnet, and extracting nickel and manganese from the remaining powder.
Extended data:
process technology
Due to the "blood lead pollution incident" in the lead storage battery industry, the state stepped up efforts to control heavy metal pollution and eliminate backward production capacity, which led to the shock of the lead industry and the decline in lead prices. As the main body of the battery industry, the growth of the lead-acid battery industry has slowed down, thus affecting the development of the whole industry.
On the one hand, the cause of the "blood lead pollution incident" is that some enterprises in the lead industry have neglected pollution control for a long time and eliminated backward production capacity, resulting in lead pollutants produced in the production process flowing into the atmosphere, water bodies and soil without treatment, causing serious lead pollution;
On the other hand, a large number of waste lead-acid batteries lack complete environmental protection and pollution-free treatment methods, which can easily lead to lead-acid leakage and serious environmental pollution in the treatment process.
In the process of use, the lead metal and paste in the battery can be melted in the rotary furnace and converted into powder, and the polyethylene grid and polypropylene shell of the lead battery shell are processed into particles, which can be reused;
Will not cause secondary pollution in the whole production process. This technology not only greatly reduces environmental pollution, but also turns waste into treasure. Its products provide important raw materials for other industries, and truly achieve "killing two birds with one stone". This technology won the gold medal in Brussels 20 1 1 Innovation Research and New Technology Exhibition. This technology is being popularized in Poland. ?
Baidu Encyclopedia-Recycling of Waste Batteries