Method of processing of the waste lead storage batteries |
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IPC classes for russian patent Method of processing of the waste lead storage batteries (RU 2245393):
 Method of electrolytic refining of lead bismuthide / 2197565
The invention relates to electrolytic refining of metals and can be used in the metallurgical industry for cleaning of lead from bismuth
 Method for processing of lead - and sulphide-containing concentrates of gold (options) / 2196839
The invention relates to the metallurgy of noble metals, in particular to the extraction of high-purity gold from lead - and sulphide-containing concentrates, as well as the separation of alloys of gold with silver with obtaining metals
 The method of separation of bismuth from lead / 2049158
The invention relates to the metallurgy of bismuth in particular to a method of refining bismuth from lead and obtain the salts of bismuth
 The method of obtaining lead / 2048611
The invention relates to an electrical obtaining metals by electrolysis
Method of processing of the waste lead storage batteries / 2245393
The invention is dealt with the methods of electrochemical productions, in particular with processing waste storage batteries. Then the electrolyzer is filled up with a solution 2М of sulphaminic acid and the unbroken leaden plates with an active mass are dipped into it for a day. Then they fix a cathode made out of a pure lead and the selected lead plates from the waste lead storage batteries are used in the capacity of an anode. Then the system is connected to a direct current source. Further the process of electrowinning of lead is conducted at simultaneous dissolution in it of unbroken leaden plates at the anode current density of 10-20 mA/cm2 with provision of an increase of productivity of the process at the expense of absence of the labor-consuming production operations. The sulphaminic electrolyte used in the process is harmless, whereas other electrolytes are toxic. Antimony does not dissolve in it and passivation of anodes in it is minimum. The method also ensures practically full utilization of lead from the waste lead storage batteries.
Lead electrolytic refining method / 2294984
Method of electrolytic refining of lead comprises steps of anode dissolution and cathode reduction of lead in aqueous solution of electrolyte; using as electrolyte aqueous nitrate solution of salts of lead and sodium containing, g/l: lead (in the form of Pb(No3)2), 220 - 250; NaNO3, 180 - 200; HNO3- ,(1.5 -2)10-3 (pH =4,5); carrying out electrolysis at electric current density 450 - 480 A/m2, temperature 20 -25°C, electrolyte circulation rate 45 - 50 l/min.
Method of reprocessing of the spent lead storage batteries / 2298044
The invention is pertaining to the reprocessing of the spent lead storage batteries. The method provides for simultaneous dissolution of the non-destructed leaden plates with the active mass in the electrolyte and the electrochemical extraction of the lead. As the electrolyte use the solution of sodium hydrotartrate and the sodium hydroxide, and the electrochemical extraction of lead conduct at the current density of 5-15 mA/cm2. The process is ecologically pure, the used electrolyte is harmless, it contains the insoluble antimony, the passivation of the anodes in it is minimal, the practically complete utilization of the lead from the spent lead storage batteries is reached.
Recycling of lead plates with active mass of used accumulators / 2326186
Invention is related to the sphere of electro-chemical industries and is the method of recycling of lead plates with active mass of used accumulators. Method includes electrochemical dissolution of lead in electrolyte solution and it extraction from electrolyte. As electrolyte, solution of acetic acid is used with additives of nitric acid. Electrochemical dissolution is performed until dissolved lead concentration in electrolyte solution reaches 350-450 g/l, then the solution is separated from the insoluble residue, and the lead is extracted from the solution as end product - tribasic lead sulfate by settling with concentrated sulfuric acid. After depositing of lead, electrolyte is again sent for dissolution of lead plates.
 Method of lead utilisation / 2353685
Invention relates to the method of lead utilisation. Method of lead utilisation from waste accumulators includes location of undisturved lead plates with active mass of waste accumulator in electrolyte. Then it is implemented simultaneous dissolving of undisturved lead plates with active mass in electrolyte and lead electrochemical isolation. Additionally lead isolation is implemented at current density 5-15 mA/cm2. In the capacity of electrolyte it is used maleic acid.
Procedure for production of basic lead carbonate / 2418103
Invention refers to procedure of production of basic lead carbonate by electrolysis of water solution using anode lead containing material saturated with carbon dioxide. Also, electrolysis is carried out at cathode current density 25-30 mA/cm2, and pressure of carbon dioxide 0.5-0.8 MPa. As anode material there are used grids of spent lead accumulator.
 Method of producing metallic lead from sweet paste making active part of lead-acid accumulator / 2467084
Invention relates to electrolytic production of metallic lead from sweet lead paste that makes active part lead-acid accumulator. Method comprises the following steps: a) leaching of sweet paste by bringing it in contact with solution containing ammonium chloride to obtain solution after leaching and discharge of CO2 gas; b) separation of first solid residue and first clarified solution after leaching from step (a); c) leaching solid residue separated at step (b) by bringing it in contact with solution comprising ammonium chloride and hydrogen peroxide; d) separation of second solid residue and second clarified solution after leaching from solution after leaching from step (c); e) combining first clarified solution after leaching from step (b) with second clarified solution after leaching from step (d) to produce single solution; f) electrolysis of solution from step (e) in flow-through cell at current density of 50 to 10000 A/m2. Note here that electrolysis brings about mossy lead. Invention relates also to method of desulfonation of said paste.
Method for electrochemical extraction of lead from lead/acid wastes of accumulator batteries / 2505613
Method involves electrochemical deposition of lead from alkaline solutions on asymmetric pulsed current with variation of the periodic sequence of packets of positive n+ and negative n- current pulses, wherein the number of pulses in a packet is selected from n+=20 and the interval 1≤n-≤10.
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FIELD: electrochemical industry; processing of waste lead storage batteries. SUBSTANCE: the invention is dealt with the methods of electrochemical productions, in particular with processing waste storage batteries. Then the electrolyzer is filled up with a solution 2М of sulphaminic acid and the unbroken leaden plates with an active mass are dipped into it for a day. Then they fix a cathode made out of a pure lead and the selected lead plates from the waste lead storage batteries are used in the capacity of an anode. Then the system is connected to a direct current source. Further the process of electrowinning of lead is conducted at simultaneous dissolution in it of unbroken leaden plates at the anode current density of 10-20 mA/cm2 with provision of an increase of productivity of the process at the expense of absence of the labor-consuming production operations. The sulphaminic electrolyte used in the process is harmless, whereas other electrolytes are toxic. Antimony does not dissolve in it and passivation of anodes in it is minimum. The method also ensures practically full utilization of lead from the waste lead storage batteries. EFFECT: the invention ensures an increase of the process productivity, safety and full utilization of lead from the waste lead storage batteries. 1 tbl, 3 ex
The invention relates to the field of electrochemical productions, in particular to the disposal of lead from lead waste and can be used as one of the ways to get lead for battery manufacturing, quality lining and electrode material in the chemical industry, etc. There is a method of recycling worn-out lead plates, including the formation of metal grating, shredding sulphate-oxide fraction, loading powder fraction in the cathode space of the cell, carrying out electrolysis, removing the spongy lead, it briquetting and melted. The electrolyte may be either acidic or alkaline [A.S. 74728, CL 21, 26/01]. The disadvantage of this method is the complexity of the process. The closest way to the same destination on the totality of symptoms is the way the recycling of lead batteries, which carry out the electrochemical dissolution of intact lead plates with an active mass of sulfamic acid [U.S. Pat. GB 1486738, class 25 With 1/18, 21.09.1977,]. The proposed method differs from the above-mentioned analogue of the fact that after electrochemical dissolution spend electrolytic selection of lead. The task of the invention is to protect the environment and Uchenie processing of secondary lead raw materials. The technical result is efficiency and environmental friendliness of the process due to the use of less toxic electrolyte, high performance process. The technical result is achieved by a method for processing lead-acid battery involves the electrochemical dissolution of intact lead plates with active weight sulfamic acid, after electrochemical dissolution spend electrolytic selection of lead while dissolving in it intact lead plates at a density current of 10-20 mA/cm2. The essence of the method consists in the following. In a pot pour a 2M solution of sulfamic acid and put it intact lead plate with the active mass on the day. Fix a cathode made of pure lead, and the anode lead plate exhaust the battery, then connect to the system DC. Then hold the electrolytic selection of lead while dissolving in it intact lead plates. Conducting electrolysis by the proposed method allows to recycle worn-out lead-acid batteries to obtain pure lead. Table 1 shows the dependence of the output current from the electrolyte composition and current density.
Example 1. In a glass bowl 1 l is filled with 2 M solution of sulfamic acid, and then there are intact lead plate with the active mass on the day. The cathode - plate pure lead. The anode - intact lead plate with the active mass. The current density of 10 mA/cm2. The precipitate has a loose spongy structure. The current output 96,7%. Example 2. The electrolysis is conducted according to claim 1 with the difference that in the electrolyte was added phenol (3 g/l and glue - 4 g/l Sediment has a dense crystalline structure. The current output is 97.9%. Example 3. The electrolysis is conducted according to claim 1 with the difference that in the electrolyte was added phenol (3 g/l and glue - 4 g/l at a current density of 20 mA/cm2. The current output is 97.6%. The proposed method has several advantages: 1. The high efficiency of the process due to the lack of labor-intensive manufacturing operations. 2. Environmental h is state, because the proposed sulfamic electrolyte harmless, while other electrolytes toxic, it is insoluble antimony and passivation of anodes in it is minimal. 3. Non-waste technology, due to the almost complete recycling of lead from used lead acid batteries. For the inventive method, it is described in the independent clause sets out the claims, confirmed the possibility of its implementation using the steps described in the application of tools and methods. Method of recycling lead acid batteries, including electrochemical dissolution of intact lead plates with active weight sulfamic acid, characterized in that after electrochemical dissolution spend electrolytic selection of lead while dissolving in it intact lead plates at a density current of 10-20 mA/cm2.
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