黄金冶炼尾气处理技术及应用

Gold smelting tail gas treatment technology and its application

灵宝金源公司黄金冶炼厂制酸尾气中含有二氧化硫、氮氧化物和颗粒物等污染物,其破坏环境,不利于矿业的可持续发展。采用氢氧化钠吸收法处理制酸尾气的成本高,且处理后尾气不符合DB 41/1066—2015 《工业炉窑大气污染物排放标准》要求;采用过氧化氢同步脱硫脱硝-电除雾法处理制酸尾气,并进行了工业应用。实践结果表明,处理后的尾气中二氧化硫浓度69. 10 mg/m3、氮氧化物浓度160. 87 mg/m3、颗粒物浓度28. 59 mg/m3,远优于国家标准和河南省地方标准要求。该工艺的成功应用,为黄金冶炼尾气处理工艺选择提供了技术支撑。

Pollutants including sulphur dioxide, nitrogen oxide and particulate matters exist in the tail gas from acid-making process in the gold smeltery of Lingbao Jinyuan Company, damaging environment and hindering sustain- able development of mining sector. It takes high costs to treat the tail gas from acid-making process with sodium hydioxide absorpotion and the treatment effect doesn＇t conform to the requirement of DB 41/1066 -2015 Industrial Kiln Air Pollutant Emission Standards; synchronic desulfurization and denitrification -electromigration with sodium hydroxide is employed to treat the tail gas from acid-making process and industrial application is conducted. Practice shows that the sulphur dioxide concentration in the treated gas is 69.10 mg/m^3 ,nitrogen oxide concentration is 160.87 mg/m^3, particulate matter concentration is 28.59 mg/m^3 , far better than national and Henan regional standards. The successful application of the process provides technical support for the selection of gold smehing tail gas treatment processes.