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Method for regenerating lead-tin-based multi-element alloy by refining coarse impure lead

A technology for regenerating lead and elements, which is applied in the field of crude and miscellaneous lead refining, can solve the problems of inability to reverse order, inability to keep valuable elements alone, inability to effectively use lead-acid batteries, etc., to reduce process links, easy to operate, and save resources Effect

Pending Publication Date: 2021-11-23
尤全仁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the existing methods for refining coarse and miscellaneous lead can only remove impurities sequentially according to the order of oxidation potential, and cannot reverse the order, nor can a single useful and valuable element be retained
The existing method for refining coarse and miscellaneous lead produces a single refined product, and can only produce refined lead products. To produce lead-tin-based alloys, new tin elements need to be added, and the inherent tin elements in rough and miscellaneous lead cannot be effectively used to prepare Antimony-free lead-tin-based alloys to prepare lead-calcium-tin-aluminum alloys for lead-acid batteries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Manufacture of PbSnCaAl Alloy Using Regenerated Coarse and Miscellaneous Lead (Reduced Lead Ingot)

[0031] A method for refining secondary lead-tin-based multi-element alloys with coarse miscellaneous lead,

[0032] S1. Melting 1000 kilograms of coarse miscellaneous lead (reduced lead ingot) to obtain coarse miscellaneous lead liquid;

[0033] S2. Sampling and testing the crude liquid lead; measured results: As0.02%, Sb0.15%, Sn0.32%, Bi0.003%, Ag0.00047%, Cu0.0012%, Zn0.0010%.

[0034] S3. Heating and stirring the coarse miscellaneous lead liquid, adding 0.12 kg of tin-aluminum refining additive, 1.5 kg of calcium-aluminum matrix additive and 0.2 kg of lead slag reducing agent to the coarse miscellaneous lead liquid according to the test results for refining;

[0035] S4. Adjust the temperature and add 35 kg of lead slag reducing agent;

[0036] S5. Stand still, remove the slag, make a solid product, carry out spectral detection, and measure the result:

[0037] As...

Embodiment 2

[0048] Manufacture of PbSnCaAl Alloy Using Raw Crude Lead

[0049] A method for refining secondary lead-tin-based multi-element alloys with coarse miscellaneous lead,

[0050] S1. Melting 1000 kilograms of crude miscellaneous lead (primary crude lead) to obtain crude miscellaneous lead liquid;

[0051] S2. Sampling and detection of crude lead liquid; measured results: As0.03%, Sb0.08%, Sn0.94%, Bi0.004%, Ag0.00050%, Cu0.0036%, Fe<0.0010%, Zn<0.0010%, Te<0.0010%.

[0052] S3. Heating and stirring the coarse miscellaneous lead liquid, adding 0.08 kg of tin-aluminum refining additive, 1.5 kg of calcium-aluminum matrix additive and 0.1 kg of lead slag reducing agent to the coarse miscellaneous lead liquid according to the test results for refining;

[0053] S4. Adjust the temperature and add 35 kg of lead slag reducing agent;

[0054] S5. Stand still, remove the slag, make a solid product, carry out spectral detection, and measure the result:

[0055] As<0.0010%, Sb<0.0010%, S...

Embodiment 3

[0066] Manufacturing Lead-Calcium Alloys Using Regenerated Coarse and Miscellaneous Lead (Regenerated Reduced Lead Ingot)

[0067] A method for refining secondary lead-tin-based multi-element alloys with coarse miscellaneous lead,

[0068] S1. Melting 1000 kilograms of coarse miscellaneous lead (regenerated lead ingot) to obtain coarse miscellaneous lead liquid;

[0069] S2. Sampling and detection of crude lead liquid; measured results: As0.0005%, Sb0.021%, Sn0.35%, Bi0.0034%, Ag0.00036%, Cu0.0030%, Fe<0.0010%, Zn<0.0010%, Ni<0.0010%, Te<0.0010%.

[0070] S3. Heating and stirring the coarse miscellaneous lead liquid, adding 0.08 kg of tin-aluminum refining additive, 2 kg of calcium-aluminum matrix additive and 0.5 kg of lead slag reducing agent to the coarse miscellaneous lead liquid according to the test results for refining;

[0071] S4. Adjust the temperature and add 12 kg of lead slag reducing agent;

[0072] S5. Stand still, remove the slag, make a solid product, carry...

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Abstract

The invention discloses a method for regenerating a lead-tin-based multi-element alloy by refining coarse impure lead, and relates to the technical field of coarse impure lead refining. The method for regenerating the lead-tin-based multi-element alloy by refining the coarse impure lead comprises the following steps of: S1, melting the coarse impure lead to prepare a coarse impure lead liquid; S2, carrying out sampling detection on the coarse impure lead liquid; S3, heating and stirring the coarse impure lead liquid, and adding a tin-aluminum refining additive, a calcium-aluminum parent additive and a lead slag reducing agent into the coarse impure lead liquid according to the detection result for refining; S4, adjusting the temperature, and supplementing the lead slag reducing agent; S5, standing and deslagging to obtain a solid product, and performing spectrum detection to obtain a solid product qualified in spectrum detection; and S6, conducting ingot casting on the solid products qualified through spectrum detection so as to prepare the lead-tin-based multi-element alloy. According to the method for regenerating the lead-tin-based multi-element alloy by refining the coarse impure lead, provided by the invention, the traditional process flow is changed, products required by customers are directly manufactured, the process links are reduced, and the manufacturing flow is greatly shortened by reducing coarse impure lead-refined lead-customer products into coarse impure lead-customer products.

Description

technical field [0001] The invention relates to the technical field of crude miscellaneous lead refining, in particular to a method for refining crude miscellaneous lead to regenerated lead-tin-based multi-element alloys. Background technique [0002] The existing crude impurity lead refining method is fire refining. The fire refining process is to gradually add different chemical substances according to the oxidation sequence of crude (miscellaneous) lead impurity elements to convert them into oxides or oxidized salts. The compounds of these compounds are removed by utilizing the property that such compounds are insoluble in lead but float on the surface of lead. Among them, the oxidation potential of some impurity elements is arranged as follows: Zn>Fe>As>Sn>Sb>Pb. To remove Sb, Sn, As, Fe, Zn and other impurity elements whose oxidation potential is higher than Sb must be removed. [0003] Therefore, the existing method for refining coarse and miscellaneous...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C11/06C22C13/00C22C21/00C22C24/00
CPCC22C1/03C22C11/06C22C13/00C22C24/00C22C21/00
Inventor 尤全仁
Owner 尤全仁
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