National Repository of Grey Literature 9 records found  Search took 0.01 seconds. 
Preparation of the alpha plaster by a non-pressure method in H2SO4 solution
Zájeda, Lukáš ; Gazdič, Dominik (referee) ; Dvořák, Karel (advisor)
This bachelor thesis deals with the production of alpha gypsum by a non-pressure method in H2SO4 solution. The theoretical part focuses on the current knowledge in the field of preparation of alpha plaster by a pressureless method. The practical part focuses on the possibility of preparing alpha gypsum in sulfuric acid solution of different concentrations.
Use of energetic by-products and other secondary raw materials for the alpha gypsum production
Moldrzyk, Jan ; Jiroušková, Kateřina (referee) ; Dvořák, Karel (advisor)
Thesis focus on the longterm research in an area of alpha gypsum production by non pressure method in chloride salt solutions production, which is researched by Institute od technology of building materials and components, Faculty of civil engineering for many years. The result of given research is non pressure equipment for alpha gypsum production. The scope of this research was to make a production of alpha gypsum more efficient through modification of the facility itself and through an optimalization of dehydration process. The scientific aim of this process was to compare an influence of dehydratation solutions of CaCl2, NaCl and KCl on the final product provided that molarity of solutions was at the same level.
Alfa Gypsum Production Using Chloride Dust
Kalivoda, Karel ; Rovnaníková, Pavla (referee) ; Palou, Martin (referee) ; Kolář,, Karel (referee) ; Fridrichová, Marcela (advisor)
The aim of this doctoral thesis is to verify, using previously developed laboratory instruments, the possibility of a complete or partial substitution of currently used dehydration solutions of sodium chloride and calcium chloride by potassium chloride solution extracted from chloride dusts coming from cement production, using non-pressure method to produce alpha gypsum.
Preparation of high performance sulphate binder by nonpressure method
Urban, Karel ; Novák, Jan (referee) ; Dvořák, Karel (advisor)
Institut of Technology building materials and components in FAST VUT Brno is for several years engageding by research of unpressurized production of high sulphate binders and also by developing a dehydrating apparatus. This work follows on this research. The main aim of this work is to prepare the alpha calcium sulfate hemihydrate by method of dehydration in the various solutions the chloride salts of the same molal concentration in an innovative dehydration apparatus. Another aim is monitoring the influence dehydrating solutions on the basis of KCl, NaCl and CaCl2 on the properities of made gypsum.
Study of the process of dehydration of gypsum in acid solutions
Zájeda, Lukáš ; Moldrzyk, Jan (referee) ; Dvořák, Karel (advisor)
The diploma thesis deals with the production of alpha gypsum by the non-pressure method in a solution of concentrated H2SO4. The theoretical part summarizes the present knowledge of the non-pressure method of alpha gypsum. In the practical part there is performed reproducibility of achieved results and optimization of apparatus with verification of functionality.
Preparation of the alpha plaster by a non-pressure method in H2SO4 solution
Zájeda, Lukáš ; Gazdič, Dominik (referee) ; Dvořák, Karel (advisor)
This bachelor thesis deals with the production of alpha gypsum by a non-pressure method in H2SO4 solution. The theoretical part focuses on the current knowledge in the field of preparation of alpha plaster by a pressureless method. The practical part focuses on the possibility of preparing alpha gypsum in sulfuric acid solution of different concentrations.
Alfa Gypsum Production Using Chloride Dust
Kalivoda, Karel ; Rovnaníková, Pavla (referee) ; Palou, Martin (referee) ; Kolář,, Karel (referee) ; Fridrichová, Marcela (advisor)
The aim of this doctoral thesis is to verify, using previously developed laboratory instruments, the possibility of a complete or partial substitution of currently used dehydration solutions of sodium chloride and calcium chloride by potassium chloride solution extracted from chloride dusts coming from cement production, using non-pressure method to produce alpha gypsum.
Use of energetic by-products and other secondary raw materials for the alpha gypsum production
Moldrzyk, Jan ; Jiroušková, Kateřina (referee) ; Dvořák, Karel (advisor)
Thesis focus on the longterm research in an area of alpha gypsum production by non pressure method in chloride salt solutions production, which is researched by Institute od technology of building materials and components, Faculty of civil engineering for many years. The result of given research is non pressure equipment for alpha gypsum production. The scope of this research was to make a production of alpha gypsum more efficient through modification of the facility itself and through an optimalization of dehydration process. The scientific aim of this process was to compare an influence of dehydratation solutions of CaCl2, NaCl and KCl on the final product provided that molarity of solutions was at the same level.
Preparation of high performance sulphate binder by nonpressure method
Urban, Karel ; Novák, Jan (referee) ; Dvořák, Karel (advisor)
Institut of Technology building materials and components in FAST VUT Brno is for several years engageding by research of unpressurized production of high sulphate binders and also by developing a dehydrating apparatus. This work follows on this research. The main aim of this work is to prepare the alpha calcium sulfate hemihydrate by method of dehydration in the various solutions the chloride salts of the same molal concentration in an innovative dehydration apparatus. Another aim is monitoring the influence dehydrating solutions on the basis of KCl, NaCl and CaCl2 on the properities of made gypsum.

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