Formación de Hematita a Partir de Desechos Sólidos Producidos en la Extracción de Oro, Mediante Tratamientos Térmicos
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Resumen
Se detectó la presencia del mineral hematita, luegode tratamientos térmicos en residuos sólidos producidos en el proceso deextracción de oro, las muestras provienen de la planta SODIREC, ubicada en lazona de Portovelo. Se tomaron 10 muestras provenientes de piscinas delixiviación, de relaves finos y gruesos. Se realizaron calcinaciones de lasmuestras con temperaturas entre 150 y 1000ºC. Se realizó el estudio cualitativo y cuantitativo de las muestrascalcinadas mediante Difracción de Rayos X utilizando la base de datos PDF-2 ylos métodos de Hanawalt y RIR . Se encontróla presencia de hematita en las muestras calcinadas a temperaturas mayores a600ºC, excepto en la muestra de relaves finos.
: Hematite was detectedafter heat treatments performed on leaching products that are obtained during gold extraction process; the samples were obtained from the mining factory SODIREC, which is located in Portovelo. Ten samples were taken from lixiviation pools, fine and coarse leaching samples. Heat treatments were performedto the samples with temperatures from 150 to 1000ºC. Qualitative and quantitative analysis were done by X-ray diffraction;the PDF-2 database,Hanawalt and RIR methods were applied. Hematite was found in the samples that were heated over 600ºC, but not in fine leaching samples.
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