In vitro activity is important when considering the choice of a multiphasic bioceramic scaffold as phases can dissolve or transform at different rates. The aim this study focused on synthesis and in analysis ceramics obtained from melt by directional solidification. Depending growth rate new composition bioactive coexist same sample: akermanite, monticellite, tricalcium phosphate Nurse's A phas...

Spent Foundry Sand is one of the largest industrial solid wastes generated by foundries in production iron and steel components. Currently, millions tons molten sands are discarded worldwide. Therefore, this work aims to reuse for glass-ceramic materials, since minimizes environmental impacts related its discarding. The Sand, composed >60% SiO2, was mixed with limestone melted at 1500 °C produc...

mold powders used in the continuous casting of steel contain the harmful caf2 as a main substance developing toxic gases such as sif4 and hf at elevated temperatures. in this study, three samples of i1, i2 and i3, which contained gypsum free portland cement clinker with different percentages of fe2o3 (5.68, 6.83, 8.02 ) and f- (2.09, 1.06, 0), were prepared and their main characteristics were c...

The paper presents the blast furnace slag properties at different grinding times by dry method. process of fine is prepared (10 minutes, 20 30 40 minutes). results indicated that main component in BFS amorphous structure defined about 25÷35 degrees (with appearance Akermanite 31.1, Calcite 29.2 and Aragonite 26.4). also showed compressive strength activity index increased significantly after ex...

Mold powders used in the continuous casting of steel contain the harmful CaF2 as a main substance developing toxic gases such as SiF4 and HF at elevated temperatures. In this study, three samples of I1, I2 and I3, which contained gypsum free Portland cement clinker with different percentages of Fe2O3 (5.68, 6.83, 8.02 ...