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Zorrilla, B., (2017). Relación entre pH y esfuerzo de cedencia aplicado a relaves mineros [Tesis, Universidad Nacional de Ingeniería]. http://hdl.handle.net/20.500.14076/10372
Zorrilla, B., Relación entre pH y esfuerzo de cedencia aplicado a relaves mineros [Tesis]. : Universidad Nacional de Ingeniería; 2017. http://hdl.handle.net/20.500.14076/10372
@misc{renati/261561,
title = "Relación entre pH y esfuerzo de cedencia aplicado a relaves mineros",
author = "Zorrilla Aliaga, Bill Wild",
publisher = "Universidad Nacional de Ingeniería",
year = "2017"
}
Title: Relación entre pH y esfuerzo de cedencia aplicado a relaves mineros
Authors(s): Zorrilla Aliaga, Bill Wild
Advisor(s): Hidalgo García, Roger
Keywords: Granulometría; Relaves mineros
Issue Date: 2017
Institution: Universidad Nacional de Ingeniería
Abstract: En la presente investigación se enfocó al estudio de la influencia de propiedades físicas y químicas en el comportamiento reológico de flujo de relaves mineros incidiendo en la influencia del pH sobre el esfuerzo de cedencia. Para lograr el objetivo en esta investigación, se diseñó y fabricó una mesa de experimentación basado en el principio de la prueba de asentamiento o “slump”, como indicador de fluidez, midiéndose el asentamiento y esparcimiento de la muestra de relave minero ensayada.
Los ensayos experimentales fueron aplicados a muestras de relaves mineros de la Compañía Minera VOLCAN S.A.A (alimento y overflow); la variación del pH se llevó a cabo mediante la sal sulfato de aluminio (hacia el medio ácido) y la base cal nieve (hacia el medio básico); reactivos químicos que no comprometen incremento de agua.
El rango de concentración de sólidos en peso abarcado fue de 64 a 79% y la variación del pH fue de 3.0 a 11.9, obteniéndose la influencia del pH sobre el esfuerzo de cedencia tanto para las muestras de alimento como overflow.
En el medio básico se observa una tendencia de incremento del esfuerzo de cedencia, siendo ésta una condición desfavorable al escurrimiento de la mezcla; por otro lado en el medio ácido también se manifiesta una tendencia ascendente del esfuerzo de cedencia hasta el valor de pH de 4.1; sin embargo, para el pH=3.0 se resalta una reducción considerable de este indicador reológico y por consiguiente, una técnica o metodología para la reducción significativa de agua empleada en el transporte de dichas muestras.
The present research focused at the study of the influence of physical and chemical properties on the rheological behavior of mining tailings flow emphasizing in the influence of pH on yield stress. To achieve the objective in this research, an experimentation table based on the principle of test of settling or "slump" was designed and manufactured, as indicator of fluency, measuring the settling and spreading of the sample of mining tailing tested. The experimental tests were applied to samples of mine tailings of the Mining Company VOLCAN S.A.A (alimento and overflow); the variation of the pH was carried out through the aluminum sulphate salt (towards the acid medium) and the lime snow base (towards the basic medium); chemical reagents that do not compromise water increment. The concentration range of solids by weight covered was 64 to 79% and the pH variation was from 3.0 to 11.9, obtaining the influence of pH on the yield stress both for alimento and overflow samples. In the basic medium a tendency of increase of yield stress is observed, this being an unfavorable condition to the runoff of the mixture; on the other hand in the acidic medium an upward tendency of yield stress up to the pH value of 4.1 is also manifested; however, for the pH = 3.0 a considerable reduction of this rheological indicator is highlighted and therefore, a technique or methodology for the significant reduction of water used in the transport of such samples.
The present research focused at the study of the influence of physical and chemical properties on the rheological behavior of mining tailings flow emphasizing in the influence of pH on yield stress. To achieve the objective in this research, an experimentation table based on the principle of test of settling or "slump" was designed and manufactured, as indicator of fluency, measuring the settling and spreading of the sample of mining tailing tested. The experimental tests were applied to samples of mine tailings of the Mining Company VOLCAN S.A.A (alimento and overflow); the variation of the pH was carried out through the aluminum sulphate salt (towards the acid medium) and the lime snow base (towards the basic medium); chemical reagents that do not compromise water increment. The concentration range of solids by weight covered was 64 to 79% and the pH variation was from 3.0 to 11.9, obtaining the influence of pH on the yield stress both for alimento and overflow samples. In the basic medium a tendency of increase of yield stress is observed, this being an unfavorable condition to the runoff of the mixture; on the other hand in the acidic medium an upward tendency of yield stress up to the pH value of 4.1 is also manifested; however, for the pH = 3.0 a considerable reduction of this rheological indicator is highlighted and therefore, a technique or methodology for the significant reduction of water used in the transport of such samples.
Link to repository: http://hdl.handle.net/20.500.14076/10372
Discipline: Ingeniería Civil
Grade or title grantor: Universidad Nacional de Ingeniería. Facultad de Ingeniería Civil
Grade or title: Ingeniero Civil
Register date: 16-Apr-2018
This item is licensed under a Creative Commons License