电解锰生产企业温室气体排放核算方法与源解析

电解锰生产是我国工业企业中重要的温室气体排放源之一，而缺乏系统规范的核算方法制约了国家和行业对电解锰生产企业温室气体排放的研判和认识。根据电解锰生产特点，提出电解锰生产企业温室气体排放核算边界、排放源和计算方法，形成完整的核算方法。源解析表明，案例企业生产1 t电解锰产品排放5.36 t CO₂,矿石中碳酸盐分解和电力消费是主要排放源，分别占22%和74%;制液和电解过程是温室气体排放的主要生产工序，分别占30%和67%。降低电解过程的电力消耗、提高碳酸锰矿石品位是电解锰行业减少温室气体排放的优化路径。本研究可为电解锰行业开展温室气体排放核算和减排研究提供重要参考。

Accounting Method and Source Analysis of Greenhouse Gas Emission from Electrolytic Manganese Production Enterprises

Electrolytic manganese production is one of the important sources of greenhouse gas emissions in China"s industrial enterprises. The lack of systematic and standardized accounting methods restricts the research, judgment and understanding of greenhouse gas emissions of electrolytic manganese production enterprises by the state and industry. The accounting boundary, emission source and calculation method of greenhouse gas emission of electrolytic manganese production enterprises were put forward to form a complete accounting method according to the production characteristics. Source analysis shows that the case enterprise produces 1 t electrolytic manganese product will emit 5.36 t CO2, and carbonate decomposition and power consumption in the ore are the main emission sources, accounting for 22% and 74% respectively; liquid making and electrolysis are the main production processes, making up 30% and 67% respectively. Reducing the power consumption in electrolytic process and improving grade of manganese carbonate ore are optimization paths for the industry to reduce greenhouse gas emissions. This study can provide a meaningful reference for electrolytic manganese industry to carry out greenhouse gas emission accounting and emission reduction research.