دراسة تاثير المعالجة الكيميائية على الخصائص الفيزيوكيميائية لمادة الكوراتز

Abstract

خالٍ ٛزج جُؼَٔ هٔ٘ح أٝال ذذسجعس ذ٘٤ٞ٣س ًٝ٤ٔ٤حت٤س ُٔحدز جُشَٓ جُطر٤ؼ٤س ٝرُي ذحعطؼٔحٍ ذؼل جُطشم جُط٤ل٤س ٝجُٔطٔػِس ك٢ٓ ط٤حك٤س جألؽؼس جُغ٤٘٤س (XRDٓٝ (ط٤حك٤س جألؽؼس جُطكص قٔشجء ذطكٞ٣ َكٞس٤٣( ٚFTIRٝ )ضو٘٤س جُٔؿٜش جالٌُطشٝٗ٢ جُٔحعف (EDX/MEB .(جًذش ٛحضٚ جُطشم جٕ جُشَٓ جُٔذسٝط ٣طٌٕٞ أعحعح ٖٓ ٓؼذٕ جٌُٞجسضض )SiO2 )هٞسα ذ٘غرس 81 ،% ذحإلمحكس جُ٠ٗ غرس هِ٤ِس ٖٓ ٓحدز جٌُحُغ٤ص )CaCO3ٝ )جًغ٤ذ جالُٔ٘٤ ّٞAl2O3 .جُٔؼحُؿس جٌُ٤ٔ٤حت٤س ُٜحضٚ جُؼ٤٘س ذكٔل جُٜ٤ذسًِٝٞس٣ي جغرص جٕ ًال ٖٓ ضشً٤ض جُكٔل، دسؾس جُكشجسز ٝجُٔذز جُضٓ٘٤س ُِٔؼحُؿس ُٜح ضأغ٤ش ٓرحؽش ػِ٠ دسؾس ٗوحٝز ٓؼذٕ جٌُٞجسضض جُٔؾٌَ ُٔحدز جُشَٓ. ًٝزُي ٖٓ خالٍ قغحخ دُ٤ َجُطرِٞس)CI )ضر٤ ٖضكغٖ دسؾس ضرِٞس ٓحدز جٌُٞجسضض.During this work, we first studied the structural and chemical characteristics of the natural sand material by using some spectroscopic methods such as X-ray spectroscopy (XRD), Fourier transforms infrared spectroscopy (FTIR), and scanning electron microscopy (MEB/EDX) techniques. These methods confirmed that the studied sand consisted mainly of α-phase quartz (SiO2) by 81%, in addition to a small percentage of calcite (CaCO3) and aluminum oxide Al2O3. Chemical treatment of this sample with hydrochloric acid proved that the acid concentration, temperature, and treatment time had a direct effect on the purity of the quartz mineral-forming sand. Also, through the Crystallization Index (CI) it was found that the degree of crystallization of quartz was improved