China Nonferrous Metallurgy

Yantai Guorun Copper Industry Co., Ltd. adopts the production process of oxygen-enriched side blowing smelting process and multi-gun top blowing continuous blowing process and fire anode refining continuous copper smelting production process. In response to the new environmental protection standards, the original flue gas treatment system is also need to be upgraded and transformated. According to the current situation that the exhaust treatment volume of the existing equipment is low, the anode furnace process adopts the lean oxygen combustion technology, the anode furnace oxidation period flue gas is split to the acid purification inlet, and the top blowing slag outlet flue gas is sent to the side-blowing furnace flue, and adopts other measures such as transformation of flue system, adjustment of negative pressure distribution, configuration of new equipment, and so on. The modified flue gas treatment system has the ability to process flue gas from continuous copper smelting. The exhaust dust content is less than 10mg/m³, the SO₂ concentration is less than 30mg/m3, and the NO_x concentration is less than 50mg/m³, reaching the fourth period emission standards in Shandong Province, and saving 982000 yuan per year for desulfurization materials. This article gives a detailed introduction to the upgrade and transformation of the flue gas treatment system, and explains some optimization and transformation details.