An ultra-low particle size lead power extraction device

Abstract

An ultra-low particle size lead power extraction device comprises a particle suspension bin and a particle capture bin. That bottom of the particle suspension bin is a lead pow dispensing area, a central rotating shaft is arranged at a central position, spiral blades are arranged on the central rotating shaft, a particle disturbing layer is arranged above the lead powder dispensing area, and a heating wire mesh is arranged above the particle disturbing layer. The inner top of the particle trapping bin is provided with an atomizing nozzle, and the bottom is a sedimentation tank. compared with that prior art, the ultra-low particle size lead powder extracting device, through the agitation of the shallow powder pile with spiral blades, the lead powder with the smallest particle size can be separated from the lead powder stack by flying, then entering the particle trapping bin, capturing and collecting the water mist, and finally obtaining the lead powder after precipitation. The pure physical method does not affect the chemical properties of the lead powder particles, and is suitable for manufacturing high-quality battery electrode plates.

Description

technical field [0001] The invention relates to an ultra-low particle size lead powder extraction device, which belongs to the technical field of lead-acid storage battery manufacturing. Background technique [0002] As the core of the whole lead-acid battery, lead powder has aroused the interest of many scientific and technical personnel to explore and improve its performance. Lead element has a variety of oxide forms, among which lead oxide, lead dioxide and lead trioxide are mainly used in lead-acid batteries. Most lead-acid batteries are manufactured using lead oxide. The so-called lead powder refers to 70% to 80% lead oxide and 20% to 30% free lead. Trilead tetroxide, also called red lead, is the product of lead oxide heated to about 540°C in the air. It has a special crystal structure and has been used in lead-acid batteries for a long time, especially for the manufacture of tubular plates. It can Shorten the curing time of the raw plate and the formation time of the...

AI Technical Summary

Problems solved by technology

Trilead tetroxide, also called red lead, is the product of lead oxide heated to about 540°C in the air. It has a special crystal structure and has been used in lead-acid batteries for a long time, especially for the manufacture of tubular plates. It can Shorten the curing time of the raw plate and the formation time of the plate, and increase the initial capacity of the battery, but due to the additional cost of red lead and safety issues, the amount of red lead used in lead-acid batteries is limited

[0004] Generally speaking, the finer the lead powder, the greater the acid absorption value, and vice versa, the smaller, but through the above-mentioned lead powder preparation method, the lead powder obtained often has a large particle size difference. If it is used directly without separation and filtration, other The power storage performance is limited and cannot be maximized. Therefore, in the battery manufacturing industry in developed countries, the particle size of lead powder is often required to be below 5 microns in order to produce high-performance battery plates.

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