Active Lime Production System Evaluating And Optimizing For Changcheng Special Steel Ltd

The lime is an important raw material in steel-making. It is a inexorable trend that the active lime will replace general quicklime in the process of metallurgy. This paper gives a summary about the manufacturing technique's progress of the active lime, while the relationship are illuminated between the limestone's calcinations time and its lumpiness, the quality to the temperature, the activity degree to the character. The testing manner of activity degree used in our country are also compared and analysed. After that, the manufacturing facility used in the world are described including technical parameter, using scope and its merits and faults. An evaluation about its using in our country has also been given.The reactivity in examination reached to 400ml(10min, 4NHCL); This result, with the conclusion after the analysis to lime stone's composition and foreign company's sample, indicate the lime stone can be used to produce active lime.The production system structure and the evaluation system model were built with system evaluation theory and method. The programme was optimized with fuzzy mathematic model when it was applied to evaluation system.MAERZ kiln, one of the advanced procesing in the active lime production in the world up to date, is selected to calcine lime after evaluation. Because it has the lowest fuel consumption. The further research were done to its production, running cost, interest on investment, sources of fund, environmental protection, fire control and labor organizing while a score was made to project's comprehesion benefit. Those show that it yields good economic returns.The paper also have a preliminary investigation about critical factor in the management of this systemThe research work result in the technique preparing for active lime's product system and make a stability base for the system putting in effect.