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Selective antimony and arsenic removal tin retaining agent for refining regenerated crude lead and using method thereof

An antimony arsenic tin-preserving agent and crude lead refining technology are applied in the direction of improving process efficiency, can solve problems such as waste of tin resources, and achieve the effects of less slag production, lower production costs, and simple and reliable operation methods.

Active Publication Date: 2018-10-26
JIANGSU NEW CHUNXING RESOURCE RECYCLING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a selective antimony, arsenic and tin retaining agent for the refining of regenerated crude lead and its use method, so as to solve the problem of a large amount of waste of tin resources in the oxidation refining and alkaline refining methods of the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: The selective antimony, arsenic and tin retaining agent is composed of 10wt% aluminum, 80wt% calcium, 8wt% coke powder and 2wt% lead powder based on the total mass of 100.

[0030] Put regenerated crude lead into the refining pot by weighing, heat to melt, raise the temperature to 500°C, remove copper and remove slag with copper remover, weigh the slag, take samples for direct-reading spectral analysis, the composition is as follows: Cu0.0007%, Sb 0.25%, As 0.0051%, Sn 0.615%, Bi0.003% Ag0.0008%, continue to heat up to 635 ℃, get the total content of antimony and arsenic in the pot, add antimony and arsenic composition according to 1.3 times of the total content of antimony and arsenic, the composition The composition is: 10wt% Al, 80wt% Ca, 8wt% coke powder and 2wt% lead powder.

[0031] Turn on the mixer, add antimony and arsenic agents into the lead liquid, keep stirring for 30 minutes, stop, let stand and cool down to 480°C, add coal powder or sawdust and...

Embodiment 2

[0032] Example 2: The selective removal of antimony, arsenic and tin retaining agent is composed of 25wt% aluminum, 72wt% calcium, 2wt% coke powder and 1wt% lead powder based on the total mass of 100.

[0033] Put the regenerated crude lead into the refining pot by weighing, heat and melt, raise the temperature to 490°C, remove copper with a copper remover, remove the ash and slag, weigh the slag, take a sample for direct-reading spectral analysis, the composition is as follows: Cu0.0005%, Sb 0.15% , As 0.0031%, Sn 0.517%, Bi0.0026% Ag0.001%, continue to heat up to 605 ℃, get the total content of antimony and arsenic in the pot, add antimony and arsenic composition according to 1.2 times of the total content of antimony and arsenic, the composition The composition is: 25wt% of Al, 72wt% of Ca, 2wt% of coke powder and 1wt% of lead powder.

[0034] Start the mixer, add antimony and arsenic agents into the lead liquid, keep stirring for 35 minutes, stop, let it stand and cool dow...

Embodiment 3

[0035] Example 3: Selective removal of antimony, arsenic and tin retaining agent, based on the total mass of 100, is composed of 30wt% aluminum, 67wt% calcium, 2wt% coke powder and 1wt% lead powder.

[0036] Put the regenerated crude lead into the refining pot by weighing, heat and melt, raise the temperature to 510°C, remove copper with a copper remover and remove ash, weigh the slag, take a sample for direct reading spectral analysis, the composition is as follows: Cu0.0003%, Sb 0.08% , As 0.0041%, Sn 0.685%, Bi0.0027% Ag0.0007%, continue to heat up to 595 ℃, get the total content of antimony and arsenic in the pot, add antimony and arsenic composition according to 1.4 times of the total content of antimony and arsenic, the composition The composition is: 30wt% Al, 67wt% Ca, 8wt% coke powder and 2wt% lead powder.

[0037]Turn on the mixer, add antimony and arsenic agents into the lead liquid, keep stirring for 30 minutes, stop, let stand and cool down to 480°C, add coal powd...

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Abstract

The invention provides a selective antimony and arsenic removal tin retaining agent for refining regenerated crude lead and a using method thereof, and belongs to the field of refinement and impurityremoval of the regenerated crude lead. The selective antimony and arsenic removal tin retaining agent comprises 10-30wt% of aluminum, 65-85wt% of calcium, 1-10wt% of coke powder and 1-5wt % of lead powder on the basis of the total mass thereof. According to the content of antimony in lead, the antimony and arsenic removal tin retaining agent is added to lead liquid with the temperature of about 550-650 DEG C according to certain proportion so as to carry out antimony and arsenic removal reaction; at the end of reaction, antimony and arsenic scum is fished out by temperature reduction to obtainthe lead liquid without the antimony and arsenic; and the content of the antimony and arsenic is reduced to below 0.0005wt %, and the content of the tin is essentially unchanged. The selective antimony and arsenic removal tin retaining agent has a high removal rate for the antimony and arsenic in the lead liquid and realizes the deep removal of antimony and arsenic impurities, enables the valuable metal tin to be effectively retained, reduces the production cost of the lead alloy preparation, meanwhile is smokeless and tasteless in an antimony and arsenic removal reaction process and enablesworking environments to be good.

Description

technical field [0001] The invention relates to the refining and impurity removal field of regenerated crude lead, in particular to a selective antimony, arsenic and tin retaining agent for refining regenerated crude lead and a use method thereof. Background technique [0002] In the production process of secondary lead, crude lead contains impurities such as antimony, tin, arsenic, iron, cadmium, copper, etc., and the impurities in crude lead must be refined and removed. There are two methods of traditional lead refining to remove antimony, arsenic, tin and other impurities: oxidation refining and alkaline refining; oxidation refining uses oxygen in the air to oxidize impurities to remove impurities, and alkaline refining uses sodium nitrate as an oxidant Remove impurities by oxidation and slagging. Since antimony, arsenic, and tin have similar chemical properties, they are all removed at the same time during the refining and impurity removal process. Sometimes the high-v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B13/06C22B13/02C22C1/06C22C24/00
CPCC22B13/025C22B13/06C22C1/06C22C24/00C22C32/0084Y02P10/20C22B13/08
Inventor 杨春明
Owner JIANGSU NEW CHUNXING RESOURCE RECYCLING CO LTD
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