Investigation of the usability of granite quarry remains as raw material in ceramic production

In recent years, the amount of natural stone residues has been increasing due to the increasing demand for natural stone. The collection, temporary storage, transportation and disposal of these residues in the places where they are produced is environmentally important. It is important to reduce the costs and environmental impacts of the wastes that can be recycled and evaluated, by passing them through various physical or chemical processes and converting them into raw materials and reintroducing them to the production process. The acquisition of natural resources is very important for the balance of nature. In the Isahocalı region of Kırşehir province, granite block production is carried out by Ece Mermer, whose commercial name is Kırçiçek. After the geochemical analysis carried out on the residues, it was found to have high Na2O+K2O (6.03-9.67) content. It has been widely used in the ceramic industry due to its high Na2O+K2O ratio, lowering the firing temperature, low viscosity, rapid development of the glassy phase and high reactivity against quartz. Within the scope of this thesis, granite block residues containing high levels of Na2O+K2O and Buzluk Mountain syenites containing high levels of Na2O+K2O, which are used as ceramic raw materials today, are used in different proportions (10-20%- 30-40-50-60-70-80-90) was replaced by weight. Afterwards, ceramic raw material tests (firing, shrinkage in size and volume, color analysis) were carried out and the usability of granite quarry residues together with Buzluk Mountain syenite as ceramic raw material was investigated and it was aimed to create an industrial symbiosis example between natural stone and ceramic sectors. The Fe2O3 ratio of the raw material used in the ceramic industry adversely affects the firing color of the ceramic. For this reason, first of all, granite quarry residues and Buzluk Mountain syenite samples obtained within the scope of field studies were subjected to size reduction processes and magnetic separation processes were carried out in a dry magnetic separator in order to remove the liberated Fe2O3. After the enrichment process, an increase was observed in the Na2O+K2O values of the samples from both regions and it was determined that the Fe2O3 ratio decreased. At the end of the study, it is thought that the granite quarry residues (foidsyenite) of the Isahocalı region rich in sodium and potassium can be mixed with Buzluk Mountain syenites at a weight of 10% to 30% and used as industrial raw materials in the ceramic industry.