Electrolytic method of high-antimony lead

A lead electrolysis and electrolyte technology, applied in the field of high antimony lead electrolysis, can solve the problems of long fire refining time, increased production cost, low current density, etc., to resist market risks, increase product rate, and reduce refining energy consumption Effect

Inactive Publication Date: 2014-10-29
蒙自矿冶有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the output is reduced due to the low current density, and yellow dan powder needs to be added, which increases the production cost. The high resistance of the electrolyte leads to a higher cell voltage of 0.45-0.5 V, which increases the power consumption, and the impurities in the precipitated lead are higher. longer refining time

Method used

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  • Electrolytic method of high-antimony lead

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: as figure 1 Shown, the method concrete operation of this high antimony lead electrolysis is as follows:

[0018] (1) Two kinds of crude lead (Pb83.8%, Sb11.5%, Cu2.5%, Ag0.2152% and Pb92.8%, Sb<3.55%, Cu2.3%, Ag0.2318%) is matched according to the ratio of mass ratio 3:5, put into the anode pot and keep the temperature at 580-600°C for melting, 90% of the material has been melted after 4.5 hours of melting, at this time, stir and remove the slag; after removing the slag, put The temperature of the lead liquid in the pot is lowered to about 340°C for copper removal by smelting. After copper removal, the temperature is raised and the temperature of the lead liquid is kept at 450-470°C. The anode plate is cast with a disc casting machine, and the cast high antimony anode plate ( Pb90.09%, Sb6.5%, Cu0.056%);

[0019] (2) Put the prepared high-antimony anode plate (Sb6.5%, Cu0.056%) and cathode plate into the electrolytic cell according to the same pole dista...

Embodiment 2

[0022] Embodiment 2: the method specific operation of this high antimony lead electrolysis is as follows:

[0023](1) Two kinds of crude lead (Pb86.1%, Sb9.62%, Cu1.96%, Ag0.2328% and Pb92.5%, Sb<4.1%, Cu2.22%, Ag0.2658%) is matched according to the ratio of mass ratio 1:1.7, put into the anode pot and keep the temperature at 560-580°C for melting, 85% of the material has melted after 4.5 hours of melting, at this time, stir and remove the slag; after removing the slag, put it into The remaining anode plate lowers the temperature of the lead liquid in the pot to about 340°C to remove copper by melting. After removing copper, raise the temperature and keep the temperature of the lead liquid at 450-470°C. Cast the anode plate with a disc casting machine. Antimony anode plate (Pb91.1%, Sb6.12%, Cu0.058%);

[0024] (2) Put the prepared high-antimony anode plate (Sb6.12%, Cu0.058%) and cathode plate into the electrolytic cell according to the same pole distance of 87mm, use the fl...

Embodiment 3

[0027] Embodiment 3: the specific operation of the method for this high antimony lead electrolysis is as follows:

[0028] (1) Two kinds of crude lead (Pb85.6%, Sb10.34%, Cu2.32%, Ag0.2361% and Pb92.8%, Sb<4.56%, Cu2.28%, Ag0.2668%) is matched according to the mass ratio of 2:3, put into the anode pot and keep the temperature at 550-580°C for melting, 80% of the material has been melted after 4 hours of melting, at this time, stir and remove the slag; after removing the slag, put it into The remaining anode plate lowers the temperature of the lead liquid in the pot to about 340°C to remove copper by melting. After removing copper, raise the temperature and keep the temperature of the lead liquid at 450-470°C. Cast the anode plate with a disc casting machine. Antimony anode plate (Pb89.89%, Sb6.9%, Cu0.048%);

[0029] (2) Put the prepared high-antimony anode plate (Sb6.9%, Cu0.048%) and cathode plate into the electrolytic cell according to the same pole distance of 87mm, use t...

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Abstract

The invention relates to an electrolytic method of high-antimony lead, belonging to the field of pyrogenic-process and wet-process combined metallurgical technology. The method comprises the following steps: performing dosing and copper removal on the high-antimony lead produced by blast smelting in an anode pot, casting into an anode plate, and controlling the content of Sb in the lead anode plate to be 6%-7%; feeding the anode plate into an electrolytic tank, electrolyzing at high-current density of 183-187A / m<2>, adding gelatin and beta-naphthol into electrolytic liquid to adjust the crystallization quality of a cathode, washing anode mud produced by electrolysis, and feeding to a reverberatory furnace for smelting and recovering metal such as lead, antimony, silver and bismuth; melting produced separated lead in a refining pot, adding caustic soda for refining, and performing ingot casting to obtain a national-standard lead ingot. The method has the characteristics that the yield of separated lead is high, the current efficiency is high (not less than 94%), the direct-current consumption is low (not more than 115kwh / t electrical lead), the electrolytic process is low in cost, yellow lead does not need to be added for increasing lead ions, the antimony product yield is increased, and the like.

Description

technical field [0001] The invention relates to a method for electrolysis of high-antimony lead, which belongs to the technical field of metallurgy combining fire method and wet method. Background technique [0002] With the increasingly fierce competition in the domestic product market and raw material market, coupled with the current market downturn, the fluctuation of market metal prices seriously affects the production efficiency of enterprises, and the proportion of lead miscellaneous materials and high value-added lead raw materials used by lead smelters continues to increase , the impurity content in crude lead is also increasing, and the production of high-antimony lead by smelting lead raw materials is also an inevitable trend. The refining of high-antimony lead in my country's lead smelting enterprises basically adopts the joint process of fire refining-electrolytic refining. The high-antimony lead is put into the anode pot for fire refining to initially remove har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/18C22B13/06
Inventor 沈江韦勇卢林况正国黄恒港
Owner 蒙自矿冶有限责任公司
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