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发明公开
CN107398171A 一种利用金属尾矿脱除烟气中酸性气体的方法 无效 - 驳回

一种利用金属尾矿脱除烟气中酸性气体的方法
摘要：
本发明涉及一种利用金属尾矿脱除烟气中酸性气体的方法，属于环境保护与综合利用技术领域。本发明将金属尾矿和水混合均匀配制成吸收浆料；在温度为10~60℃条件下，在吸收设备中将吸收浆料与烟气进行逆流接触反应5~30 min得到气体A和浆料A，气体A直接排空；在pH值为2~5的条件下，在浆料A中通入空气进行反应10~30 min得到气体B和浆料B。本发明采用金属尾矿脱除烟气中酸性气体，可降低烟气净化成本，实现金属尾矿的二次利用，减少了利用石灰石-石膏作为吸收剂产生石膏废弃物排放量。
摘要（英）：

The invention relates to a method for removing acidic gas in smoke by use of metal tailings and belongs to the technical field of environmental protection and comprehensive utilization. Absorption slurry is prepared from the metal tailings and water through uniform mixing; the absorption slurry and smoke are subjected to a countercurrent contact reaction in adsorption equipment at the temperature of 10-60 DEG C for 5-30 min, gas A and slurry A are obtained, and the gas A is directly exhausted; under the condition that the pH value is 2-5, air is introduced into the slurry A for a reaction for 10-30 min, and gas B and slurry B are obtained. Acidic gas in the smoke is removed by use of the metal tailings, the smoke purification cost can be reduced, secondary utilization of the metal tailings is realized, and the discharge amount of gypsum waste due to use of limestone-gypsum as an absorption agent is reduced.

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