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Processing method of waste acid dripping sludge

A treatment method and technology of acid mud, applied in the direction of lead-acid battery electrodes, etc., can solve the problems of waste of treatment methods, increase of enterprise cost, etc., and achieve the effect of improving service life, reducing enterprise cost and prolonging cycle service life

Inactive Publication Date: 2011-08-31
赵恒祥
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

PbSO in prior art 4 The processing method caused unnecessary waste and increased the cost of the enterprise

Method used

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  • Processing method of waste acid dripping sludge
  • Processing method of waste acid dripping sludge

Examples

Experimental program
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Embodiment 1

[0048] according to figure 1 In the acid leaching device and precipitation device shown, the waste acid mud produced in the acid leaching process is subjected to primary precipitation, secondary precipitation, tertiary precipitation, and quaternary precipitation in sequence, and dilute sulfuric acid obtained through quaternary precipitation is injected into the storage tank. Continue to carry out the acid leaching step in the acid tank;

[0049] Dry the precipitates obtained in the primary precipitation, secondary precipitation, tertiary precipitation and quaternary precipitation to obtain large particles of PbSO 4 ;

[0050] Prepare lead oxide powder with a degree of oxidation of 85wt% and the large particles of PbSO 4 mixed, the lead oxide powder was mixed with PbSO 4 The molar ratio is 4:1;

[0051] The mixed lead oxide powder and PbSO 4 Grind in a Raymond machine for 3 to 4 hours;

[0052] The ground obtained in 4PbO · PbSO 4 Mixed with lead oxide powder with an oxi...

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Abstract

The invention discloses a processing method of waste acid dripping sludge generated in the preparation process of lead acid storage batteries, including the following steps of: a) separating dilute sulphuric acid from PbSO4 in the waste acid dripping sludge; b) dry-processing the obtained PbSO4 through separation; c) mixing the PbSO4 after drying processing with lead oxide powder to make 4PbO.PbSO4; and d) mixing the 4PbO.PbSO4 with the lead oxide powder to make diachylon used for coating plates. After processing the waste acid dripping sludge through precipitation, the invention mixes the obtained big PbSO4 particles with the lead oxide to make 4PbO.PbSO4 that is then mixed with the lead oxide powder to make the diachylon. Used as the ingredient of diachylon, the 4PbO.PbSO4 can prolong the cycle service life of storage batteries. Compared with the prior art, the method effectively uses the waste acid dripping sludge generated in the process of dripping acid and reduces the cost of enterprises. Besides, by processing the PbSO4 in the waste acid dripping sludge to make the 4PbO.PbSO4 and making the 4PbO.PbSO4 into the diachylon used for coating plates, the method can prolong the cycle service life of storage batteries.

Description

technical field [0001] The invention relates to a lead-acid battery, in particular to a method for treating waste leached acid mud produced in the process of preparing the lead-acid battery. Background technique [0002] After a long period of development, lead-acid batteries have been widely used in secondary batteries due to their low cost, high voltage and abundant raw materials. For example, lead-acid batteries are currently an important source of power for battery electric vehicles, hybrid electric vehicles, and fuel cell electric vehicles. [0003] In the manufacturing process of lead-acid batteries, the manufacture of plates is an important process step. When preparing the pole plate, the alloy lead is first made into a meshed grid for use. The typical composition of the alloy lead is: Ca of 0.08wt% (percentage by weight) ~ 0.12wt%, Sn of 0.05wt% ~ 0.06wt%, 0.04wt%-0.05wt% of Al and the balance of Pb. Then use raw material lead with a purity greater than 99.99wt% t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/20
CPCY02E60/126Y02E60/10
Inventor 赵恒祥
Owner 赵恒祥
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