João Rezende

KilnSimu – Solution for Rotary Kiln Simulation

KilnSimu is a standalone software that can be used for thermodynamic modelling rotary drum furnaces. It is a joint production by VTT and GTT. While it relies on the calculation routines of ChemApp, it is user-friendly and specialized to one specific application. The rotary kiln is concurrently used in several industries. The rotary drum provides …

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Congratulations to Gunnar Eriksson on the 50 years anniversary of his publication on SOLGAS

In Acta Chemica Scandinavica Gunnar Eriksson published a series of publications which culminated in 1971 in the third paper titled SOLGAS, a Computer Program for Calculating the Composition and Heat Condition of an Equilibrium Mixture. [1] In the abstract he stated: “A computer program named SOLGAS is described. SOLGAS is a program for calculating equilibrium …

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SimuSage at work

In connection with the Industry 4.0 initiative, tools for process simulation and process optimization are recently gaining in importance. In the context of metallurgy, its digitalization will work as an enabler of the „circular economy“ [1], by a combination of fundamentally-based process models, artificial intelligence, big data approaches and last by not least, guided by …

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A SimuSage Process Model for the Oxidative Stage of the TSL Process

In recent years, there has been a continuous societal and industrial effort to promote the so-called „circular economy“. According to this paradigm, for producing engineering materials in general, and metals and alloys in particular, the chemical elements which are presently necessary in our economy should not be extracted from the so-called primary ores but instead …

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FactSage online self-learning videos

Prof. In-Ho Jung from Seoul National University, our colleague and FactSage co-developer, gave a FactSage Workshop during the conference MOLTEN 2021. This workshop included self-learning videos which are freely available online via his website:  MOLTEN2021-FactSageWorkshop-HTTL The following topics were covered in the workshop: Thermodynamic Database Development Ferrous Pyrometallurgy Alloy Design Macro Processing It is an …

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From molar Gibbs energy functions to phase diagrams – Part II

In this blog post we will see how to interpret the phase activity of a phase which does not form in equilibrium for a given temperature and pressure. For this, we will consider an Al-Cu alloy containing 0.01 mol% Cu at a temperature of 500°C and at a pressure of 1 atm and we will …

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