High-temperature furnace gas classification, temperature control, dust collection and purification process for lead anode slime smelting
A technology for smelting and purifying lead anode slime, which is applied in the fields of arsenic compounds, inorganic chemistry, separation methods, etc., can solve problems such as troublesome treatment processes
Active Publication Date: 2017-10-27
CHENGDU INTERMENT TECH
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Problems solved by technology
For example, lead anode slime smelting furnace gas (lead anode slime is a by-product produced in the process of lead electrolytic refining, currently the valuables in it are mainly recovered through pyroprocessing, and the lead anode slime needs to be smelted to produce furnace gas ) are mainly composed of arsenic trioxide and antimony trioxide (the desublimation temperature of antimony trioxide is higher than that of diarsenic trioxide), and contains a small amount of lead oxide. The dust can either produce crude antimony and white arsenic through a series of steps such as reduction-ball pressure-roasting, or mix it with charcoal and successively distill and condense it to produce arsenic-antimony alloy, or use high-pressure water immersion process. trouble
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[0038] figure 1 Shown is a process and equipment for smelting high-temperature furnace gas of lead anode slime to collect and purify dust by classification and temperature control. The first-stage gas filter unit 221, the second-stage temperature-controlled cooling unit 212, the second-stage gas filter unit 222, and the power device 230, the power device 230 drives the furnace gas generated by the industrial furnace 100 to pass through the first-stage temperature-controlled cooling unit 211 in sequence , the first-stage gas filter unit 221 , the second-stage temperature-controlled cooling unit 212 and the second-stage gas filter unit 222 . The steps of adopting the above-mentioned equipment for smelting high-temperature furnace gas of lead anode slime to collect dust by classifying temperature control include: 1) introducing the furnace gas for smelting lead anode slime with a temperature of 600-900°C produced by the industrial kiln 100 into the above-mentioned equipment, and ...
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The invention discloses a process for collecting and purifying dust from a high-temperature furnace gas by classification and temperature control for smelting lead anode slime, so as to obtain diarsenic trioxide and antimony trioxide with higher purity respectively. The steps include: 1) introducing the lead anode slime smelting furnace gas produced by industrial kilns into a furnace gas classification temperature control dust collection and purification equipment; 2) introducing the furnace gas into the first-stage temperature control cooling unit in the equipment; 3) The furnace gas discharged from the first-stage temperature-controlled cooling unit and carrying the first-stage dust is introduced into the first-stage gas filter unit; 4) The furnace gas discharged from the first-stage gas filter unit is introduced into the second-stage temperature-controlled cooling unit; 5) Introduce the furnace gas discharged from the second-level temperature-controlled cooling unit and carrying the second-level dust into the second-level gas filter unit; 6) Introduce the furnace gas discharged from the second-level gas filter unit into the third-level temperature-controlled cooling unit; 7) The furnace gas discharged from the third-level temperature-controlled cooling unit and carrying the third-level dust is introduced into the third-level gas filter unit.
Description
technical field [0001] The invention relates to a dust collection and purification process of high-temperature furnace gas classification and temperature control for lead anode slime smelting. Background technique [0002] The inventors found that the furnace gas produced by industrial kilns sometimes contains two or more gaseous substances with different desublimation temperatures, and the solid particles formed by each substance after cooling happen to have independent use value. Traditional furnace gas treatment methods can only obtain solid mixtures of these substances, which brings great trouble to the separate recovery of various solid particles. For example, lead anode slime smelting furnace gas (lead anode slime is a by-product produced in the process of lead electrolytic refining, currently the valuables in it are mainly recovered through pyroprocessing, and the lead anode slime needs to be smelted to produce furnace gas ) are mainly composed of arsenic trioxide an...
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IPC IPC(8): C01G30/00C01G28/00B01D5/00
Inventor 高麟汪涛张祥剑王钟辉曾伍祥
Owner CHENGDU INTERMENT TECH