Reduction smelting of lead chloride slag
First, the process. Figure 1. Figure 1 Lead slag reduction smelting process Second, the main technical conditions. When the ingredients, the lead chloride slag crushed to less than 10 mm, the amount of slag with 40% to 50% and 6% reduction of limestone powder coal charged reflection smelting reduction furnace, the furnace following reaction occurs: PbCl 2 +CaCO 3 +C=Pb+CaCl 2 +CO 2 +CO PbCl 2 +CaCO 3 +CO=Pb+CaCl 2 +2CO 2 The temperature is raised to about 950 ° C, and after the completion of the reaction, the temperature is raised to about 1250 ° C, and the precipitate is precipitated at a high temperature for 4 hours or more, and the lead contained in the slag is 1% or less. Produces crude lead and calcium chloride slag. The crude lead contains 97%-98% lead, which can be directly sent to lead electrolytic refining. Calcium chloride slag can be used to make crude CaCI 2 as oxidant or synthetic white tungsten . Third, the main equipment. One jaw crusher ; one ball mill ; one 5 m 2 reverberatory furnace; one leaching tank, one concentrating tank, a jacketed enamel reaction kettle; and one tumble dryer.
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