Lead-containing raw material wet recovery treatment method

A technology of recovery treatment and treatment method, which is applied in the field of wet recovery of lead-containing raw materials, can solve the problems of lack of impurity removal process, etc., and achieve the effects of controllable particle size, high lead content and controllable shape

Active Publication Date: 2018-01-30
北京中金瑞丰环保科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

There is no impurity removal process in this process route, and the impurities in the lead paste will remain in the product lead oxide, so only lead-calcium alloy scrap batteries with less

Method used

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  • Lead-containing raw material wet recovery treatment method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0076] Example 1:

[0077] 1) Configure 50L containing 1.0mol / L ethylenediamine, 0.5mol / L diethylenetriamine, 1.0mol / L aspartic acid, 1.5mol / L sodium sulfate, 1g / L sodium lauryl sulfate, 0.1g / L xylenol orange reaction solution, add 5kg of thermally decomposed lead paste at 60℃, use sodium hydroxide to maintain the pH value of the solution between 9.0-9.5, react for 1.5 hours, and filter to obtain lead-containing reaction solution;

[0078] 2) Add 1 g of sodium silicate to the lead-containing reaction solution obtained in step 1), and filter to obtain the lead-containing reaction solution B and the precipitation of impurities;

[0079] 3) Pass carbon dioxide into the lead-containing reaction solution B obtained in step 2), the ventilation rate is 50L / min, the reaction temperature is controlled between 95-100 ℃, and sodium hydroxide is used to maintain the pH of the solution between 8.0-8.5. , The reaction time is 8 hours, filter and wash to obtain the product lead carbonate and sulf...

Example Embodiment

[0083] Example 2:

[0084] 1) Prepare 5L reaction solution containing 0.8mol / L alanine, 1.2mol / L histidine, 1mol / L ammonium sulfate, 0.01mol / L cobalt sulfate, 1.1mol / L ethanolamine, and add lead paste at 80℃ 0.8kg, 105g of 30% hydrogen peroxide, use ammonia to maintain the pH of the solution between 8.0-8.5, react for 2.5 hours, and filter to obtain a lead-containing reaction solution;

[0085] 2) Add 1 g of ammonium oxalate and 2 g of ammonium phosphate to the lead-containing reaction solution obtained in step 1), and filter to obtain the lead-containing reaction solution B and impurity precipitation;

[0086] 3) Feed carbon dioxide into the lead-containing reaction solution B obtained in step 2), the ventilation rate is 10L / min, the reaction temperature is controlled between 80-85℃, and ammonia water is used to maintain the pH of the solution between 7.0-7.5 during the reaction. After 4 hours, filter and wash to obtain the product lead carbonate and sulfur-containing reaction liqu...

Example Embodiment

[0091] Example 3:

[0092] 1) Prepare 500L reaction solution containing 0.2mol / L phenylalanine, 1.2mol / L lysine, 2.0mol / L potassium sulfate, 2g / L sodium pyrophosphate, add 100kg of thermally decomposed lead paste at 70℃, Use potassium hydroxide to maintain the pH value of the solution between 8.5-9.0, react for 3.5 hours, and filter to obtain a lead-containing reaction solution;

[0093] 2) Add 15 g of tannic acid and 200 g of potassium phosphate to the lead-containing reaction solution obtained in step 1), and filter to obtain the lead-containing reaction solution B and impurity precipitation;

[0094] 3) To the lead-containing reaction solution B obtained in step 2), add 1kg of commercially available lead carbonate and pass in carbon dioxide. The aeration rate is 70L / min. The reaction temperature is controlled between 70-75°C, while potassium hydroxide is used to maintain the solution. The pH value is between 6.0-6.5, the reaction time is 5 hours, and it is filtered and washed to ...

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Abstract

The invention discloses a lead-containing raw material wet recovery treatment method, which comprises: 1) carrying out a reaction on a reaction mother liquor and a lead-containing raw material to obtain a lead-containing reaction liquid, wherein the reaction mother liquor contains a sulfate, a catalyst, a reducing agent and a complexing agent and has a pH value of 6.0-13.0; 2) carrying out a reaction on the lead-containing reaction liquid obtained in the step 1) and a precipitating agent or a solution containing a precipitating agent, and controlling the pH value at 4.5-11.0 to obtain a sulfur-containing reaction liquid and a solid precipitate A; and 3) carrying out a reaction on the all or part of the sulfur-containing reaction liquid and a desulfurization agent or a solution containing adesulfurization agent to obtain a regenerated reaction liquid and a solid precipitate B, wherein the solid precipitate A is one or a plurality of materials selected from lead carbonate, basic lead carbonate, NaPb2(CO3)2OH, lead sulfite and lead sulfate, and the solid precipitate B is one or a plurality of materials selected from calcium sulfate, calcium sulfate dihydrate and barium sulfate.

Description

technical field [0001] The invention belongs to a wet recovery method for lead-containing raw materials, and belongs to a high-efficiency and low-cost method for purifying lead paste into high-purity lead oxide. Background technique [0002] Lead-acid battery is the first rechargeable battery successfully commercialized in the world, and it is also a secondary battery with the longest history and the most complete development history. In 1859, the French physicist Plante proposed and designed the first lead-acid battery. After more than 150 years of development, the lead-acid battery has become the battery product with the highest output and output value in the world, and it is the most widely used battery. A wide range of secondary chemical power sources has also formed a relatively complete industrial production process and regeneration industry. [0003] Although my country's lead-acid battery and recycled lead industry has formed a preliminary scale, it is limited by th...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B13/00
CPCY02P10/20
Inventor 张超任佳楠武占月
Owner 北京中金瑞丰环保科技有限公司
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