The treatment method of tantalum-niobium smelting waste gas is as follows: the waste gas is discharged, condensed and absorbed, and then imported into the vertical sprinkler of the first-stage spraying equipment. The water ejected from the vertical sprinkler absorbs the acidic waste gas, and the water absorbed by the acidic waste gas flows into the acidic pool from the drain pipe, and shall be treated with water together with other waste water. Then the waste gas is directed into the secondary spraying equipment horizontal sprinkler, horizontal sprinkler spray alkaline water; Then the exhaust gas is blown into the three-stage spray equipment by the fan, the flip type sprinkler spray alkaline water; Finally, the remaining waste gas is introduced into the recovery pool and neutralized by lime water.
The alkaline water recovery cycle after secondary and tertiary spraying is completed. The advantages of the present invention are as follows: the exhaust tower is changed to a comprehensive treatment by pipeline → spray → acid-base neutralization → gas to water, and the acidic gas from multiple exhaust points is collected centrally in the pipeline for treatment, which can effectively solve the emission problem of acidic gas and optimize the clean production environment of the enterprise.Process before production in tantalum-niobium smelter: the ore is ball-ground into -260 mesh powder and put into the decomposition tank. Hf acid and H2SO4 are added to react, producing a large amount of acid gas. The vapor is discharged directly into the air above 15M after being reduced by the shower and shower, but its acidity is still relatively large, under the effect of low pressure or wind direction, it will directly affect the growth of trees and crops, and also does not meet the requirements of the state for environmental protection.
The utility model provides a tantalum-niobium smelting waste gas treatment method, the steps of which are as follows: the waste gas is discharged, condensed and absorbed, and then imported into a vertical sprinkler of a first-stage spraying equipment. The water ejected from the vertical sprinkler absorbs acidic waste gas, and the water absorbed acidic waste gas flows into an acidic pool from the drain pipe, and shall be treated with water together with other waste water. Then the waste gas is directed into the secondary spraying equipment horizontal sprinkler, horizontal sprinkler spray alkaline water; Then the exhaust gas is blown into the three-stage spray equipment by the fan, the flip type sprinkler spray alkaline water; Finally, the remaining waste gas is introduced into the recovery pool and neutralized by lime water. The alkaline water recovery cycle after secondary and tertiary spraying is completed.
