article·1970-01-01

Fabricación de tubo de vidrio al plomo

Vicente Elías Martinena

Abstract

espanolSe describen los resultados de una campana de fabricacion de tubo de vidrio al plomo en un pequeno horno de cuba de 400 mm, de profundidad, doble boveda y recuperador ceramico, provisto de burbujeadores de aire y antehorno comunicado por garganta sumergida. La campana duro tres meses. No hubo dificultades especiales para la fabricacion del tubo, salvo las procedentes de las estrechas tolerancias en diametro y espesor, y los rendimientos fueron aceptables. Se senalan las siguientes observaciones: a) Perdida al fuego muy superior a la prevista en el oxido de plomo, con notables deposiciones en zonas mas frias de superestructura y canales de humos; b) enriquecimiento superficial en silice del vidrio del antehorno; c) gran corrosividad de los humos enriquecidos en oxido de plomo, frente a los materiales refractarios de la superestructura, bovedas, canales de humo y principalmente las piezas del recuperador, no obstante el eficaz funcionamiento del poche a verre instalado en su entrada; d) buen comportamiento de los materiales electrofundidos en la cuba y del silicoaluminoso en el fondo. EnglishThe results are described of a lead glass tube manufacturing campaign in a small melting tank, 400 m?n. deep, provided with double arch, ceramic recuperator, air bubblers and working chamber connected by a submerged neck. The campaign lasted three months. There were no special difficulties for manufacturing the tube, except those proceeding from the narrow tolerances in diameter and thickness. The yield was acceptable. The following observations were made: a) Fire loss much higher than that anticipated for lead oxide, with abundant deposition in the coldest zones of the superstructure and flues; b) Superficial enrichment in silica of the glass in the working chamber; c) High corrosiveness of the smoke enriched with lead oxide towards the refractory materials of the superstructure, arches, flues and main parts of the recuperator, in spite of the efficient functioning of the poche a verre installed at its entranice; d) Good performance of the electrofused refractories in the melting tank and of the fireclay refractories in the bottom.
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Research context

OpenAlex topics: Occupational Health and Safety in Workplaces · Environmental and Ecological Studies · Chemical and Environmental Engineering Research

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