Metallurgical industry of Kazakhstan take the second place in amounts of greenhouse gas emissions after power engineering industry. Every pyrometallurgic production is characterized by the definite emission factor that reflects amount of СО2 recalculated per unit of manufactured products.
It should be noted that in Kazakhstan there are opportunities of development and realization of projects on reduction of metallurgical production energy output. In this connection issues of greenhouse gas emissions are relevant for enterprises of metallurgical industry.
The objective of this work was the model evaluations of potential decrease in the consumption of carbon energy resources and СО2 emission into the atmosphere during reduction smelting of rich lead slags.
In order to perform evaluations, METSIM models of lead slag reduction smelting in the blast and bubbling furnaces were developed and adapted for the data of industrial smelting. Quite well correlation of model evaluations with industrial data allowed comparison of estimated options for the decrease in consumption of energy resources with changes in operating parameters or in the method of lead smelting. Evaluations have shown that all admissible options for changing the modes of slag blast smelting will not decrease the consumption of coke and concomitant СО2 emission by more than 24-30%, and further decrease in energy resources consumption requires changing to the bubbling smelting of hot liquid slag. In this case it is possible to use cheaper coals with decrease in their consumption for reduction smelting of lead slag by 60-62% per carbon with equivalent decrease in СО2 emission. There have been shown the feasibility of METSIM models application for predictive evaluations and optimization of energy resources consumption during reduction smelting of rich lead slags.
|Affiliation of speaker||Priority Department Centre «Veritas», D. Serikbayev East Kazakhstan State Technical University|
|Position of speaker||Head of 1Priority Department Centre «Veritas», D. Serikbayev East Kazakhstan State Technical University|
|Publication||Journal of Cleaner Production|