Download PDF by Leonard Unthank Salkield (auth.), Maurice J. Cahalan (eds.): A technical history of the Rio Tinto mines: some notes on

By Leonard Unthank Salkield (auth.), Maurice J. Cahalan (eds.)

ISBN-10: 9400933770

ISBN-13: 9789400933774

ISBN-10: 9401080178

ISBN-13: 9789401080170

Whether the Phoenicians and t he within the south-west of the Iberian Carthaginians ever truly labored Peninsula there's a tremendous pyritic the mines , or have been purely investors, is mineral ised sector, referred to as the now not yes , yet after 205 BC, while Andevallo, extending from close to they defeated the Carthagi nians, the Seville to south of Lisbon, a space Romans introduced their very own males expert a few one hundred fifty kilometres lengthy and 30 in mining and metallurgy. kilometres vast. The Romans occupied many of the The Rio Tinta Mines , that are the Iberian Peninsula for six hundred years , biggest of this "pyrites belt" , lie till approximately 425 advert - the newest within the zone referred to as Andalusia, Roman cash stumbled on at Rio Tinto express a few ninety kilometres north-west of the pinnacle of Honorius who was once emperor Seville and seventy five kilometres north-east from 395 to 423 advert. Mining needs to of Huelv8 . they've got a truly lengthy have declined with the invasion of historical past, relationship again to pre-Iberian Barbarians within the fifth century and the days; then got here the Iberians , a race next entr y of the Visigoths who of North African foundation (Turdetarian have been finally absorbed into the and Tartessian) , the Phoenicians , the folk of Spain. In 711 advert the Carthaginians , the Romans , the Moors, Moors invaded the Peninsula from the Spaniards and the British. It North Africa.

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Additional resources for A technical history of the Rio Tinto mines: some notes on exploitation from pre-Phoenician times to the 1950s

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The temperature of the bath was lo~ered to remove dissolved sulphur dioxide , slag ~as aga i n removed , and the surface ~a s covered with charcoal to reduce the copper ox i de . This method of refining was used up to the time of the RTC and was still used at a much later date in Germany and Hungary . Ho~ever , Escosura ~as not satisfied with the quality of refined copper produced at Rio Tinto; at that time it may have contained residual arsenic and was further refined at the armaments works in Seville .

More detailed information on production is contained in Appendix 10. Heap Roasting cir ca 1890 - 42 - I CHAPTER 8 I Early metallurgical operations ofRTC cover). Teleras were built 100 ft long, with a maximum width of 16 ft, between 10 and 15 ft high, and with hemispherical ends. In building a telera , rough flues were made on the levelled ground, using loose stones to give a cross section of about 15 in wide and 18 in high. These flues ran across the telera, at about 15 ft intervals, and connected to two chimneys, one at each end; the chimneys were raised in rough stones in the course of building the telera.

His claims were received with enthusiasm by the Treasury, although not necessarily by the Minister of Mines. Without any serious investigation of the claims, Cerda was granted a patent and began exploitation under the agreement entered into with the Treasury. Exploitation required the use of Prieto's slow roasting method; how he got over that difficulty is not known. Electrochemical decomposition!! in 1834. - 32 - The Treasury agreed to Cerda taking half the resid ual mined ore after the obligation to supply the Planes Company had been met and to leasing the Desamparados smelter.

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A technical history of the Rio Tinto mines: some notes on exploitation from pre-Phoenician times to the 1950s by Leonard Unthank Salkield (auth.), Maurice J. Cahalan (eds.)

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