不同研磨介质下的磨矿过程碳排放核算

Carbon Emissions Accounting of Grinding Process under Different Grinding Media

磨矿工艺作为矿物解离时高耗低效且碳排放量大的重要工序,改进和优化磨矿过程是实现选矿厂节能减排、降本增效的有效途径。采用碳排放因子法核算钢锻及纳米陶瓷球生产及磨矿应用过程中的碳排放量。核算结果表明,钢锻碳排放强度为2.07 t CO_(2)/t,纳米陶瓷球碳排放强度为1.22 t CO_(2)/t。论证了纳米陶瓷球替换钢锻的效益,以该企业磨矿工序为例,每年将减少碳排放约1480.90 t,并节约磨矿成本147.85万元。纳米陶瓷球磨矿工艺技术是一种响应“双碳”战略的新型低碳技术。

Grinding process,as an important process for mineral dissociation,is characterized by high energy-consumption,low efficiency and huge carbon emissions.Improving the grinding process is an effective way to conserve energy,reduce emission and cost and increase efficiency at mineral processing plants.The emission factor approach is used to estimate the carbon emissions in the production of steel forging and nanoceramic ball and grinding process.The results show that the carbon emission intensity of steel forging is 2.07 t CO_(2)/t and that of nanoceramic ball is 1.22 t CO_(2)/t.With industrial application cases,the study demonstrates that nanoceramic balls can help mineral processing plants reduce carbon emissions by about 1,480.90 t annually and save grinding costs by 1.48 million yuan after replacing steel forgings.Applying nanoceramic ball to grinding process is a new low-carbon technology in response to the“dual-carbon”strategy.