In processing 15 000 t of lead-acid battery production equipment installed inside the main example
See the table below for examples of equipment. Waste lead battery separator (including two 20-line conversion tanks and 20 expansion frame filter presses and other equipment) can be imported from abroad, can handle 5t waste lead storage batteries per hour, with high degree of automation, only one person is required to operate . The lead mud coating machine is designed and manufactured by itself, and can be coated with 120 pieces per hour. Electrolysis has 10 lines, each line has 40 slots, each block has 4 cathodes, 5 anodes, the plate area is 0.2m 2 , and the plate materials are all stainless steel. One cycle of electrolysis is 20h. After the electrolytic material facing l0t iron melt pot, and the melting grid alloy formulated in 20t wok. There is also a set of 30m 3 wastewater treatment plant.
Equipment specification example | |||
name | unit | Quantity | specification |
Separator | set | 1 | 5t waste lead storage battery per hour (including 20m 3 conversion tank and 20m 2 plate and frame filter presses) |
Coating machine | set | 1 | 120 pieces per hour |
Electrolytic cell | only | 400 | Length = 0.83m , width = 0.53m , height = 0.50m |
Rectifier | station | 10 | 0~750A/150V |
Alloy melting pot | set | 1 | 20t |
Material melting pot after electrolysis | set | 1 | 10t |
Continuous ingot casting machine | set | 1 | 20t/h |
Process conditions The solid-phase electrolytic treatment of waste lead-acid batteries is as follows:
Current density: 600A/m 2 ;
Electrolyte: 10%~15% NaOH solution;
Temperature: 40~60 °C;
Pole spacing: 80mm;
Cell voltage: 1.9~2.6V.
Technical and economic indicators The technical and economic indicators for solid phase electrolytic treatment of waste lead-acid batteries are as follows:
Alloy melting recovery rate: 80%, (the total metal recovery after scum solid phase electrolysis is 95%);
Solid phase electrolytic lead recovery rate: 95%; current efficiency: 85%;
Solid phase electrolysis power consumption: 600kW·h/tPb;
Electrical lead purity: >99.994%;
Alkali consumption: 200kg NaOH / tPb;
Oil and gas consumption (with molten lead): 20m 3 / tPb;
After treatment of wastewater: lead <0.5 x 10 -4 %, BOD <100 x 10 -4 %.
The table below shows the daily income and expenditure of the production unit for processing 15,000 tons of waste lead-acid batteries per year.
Balance sheet | |||||||
support     Out / yuan | Receive   In / yuan | ||||||
name | Quantity | unit price | price | name | Quantity | unit price | price |
Waste lead storage battery | 50t | 1800 | 90000 | Electric lead | 16t | 600 | 73600 |
Electricity (electrolysis + power) | 6600kW · h | 0.6 | 15960 | alloy | 12t | 5200 | 2400 |
Liquid alkali ( 50% ) | 6t | 1100 | 6600 | plastic | 2.8t | 1000 | 2800 |
Artificial | 30 workers | 50 | 1500 |   |   |   |   |
LPG |   |   | 900 |   |   |   |   |
water |   |   | 250 |   |   |   |   |
other |   |   | 400 |   |   |   |   |
total |   |   | 115610 |   |   |   | 138800 |
references:
.. 1 Fu-yuan, production status and development trend China Secondary Lead Zinc Lead Information (1999) conference special issue: 36-47
2 K.Strode, Recovery of Metals from Lead-containing Scrap Materials, British Patent 1368 423 (1974)
3 R F. Lee, Electrolytic Recovery of Lead, British Patent 1428 957 (1976)
4 Lu Keyuan. Lead-containing material solid phase electrolysis device. Chinese patent, 85200287.4 (1986)
5 Lu Keyuan. Solid phase electrolysis treatment of waste lead storage battery production practice. Non-ferrous metals (smelting part), 1999 (5): 1-3
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