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.
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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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