Resumo

MAGANA-HAYNES, María Elena  e  SANCHEZ-GUILLEN, Crispín. Effects of cuban crude oil on the process of leach, sedimentation and distillation in Nicaro. RTQ [online]. 2015, vol.35, n.1, pp. 54-62. ISSN 2224-6185.

The effect of the use of Cuban crude in the process of leaching, sedimentation and distillation of the processed minerals at René Ramos Latour Company was evaluated. Two periods of tests were performed; one when oil was introduced into the furnace by spear and the other when it was introduced by spear and chamber. The results demonstrated the feasibility of using the Cuban crude in reduction and leaching process of mineral by the use of spear and chamber as well. Nickel and cobalt extractions achieved by stepwise exceed values found in the related literature. Deposition of mineral was good reaching values of 1,736 -1,745 Kg / m³ at the bottom of the sedimentation stage leach and 1,774 -1,807 Kg / m³ in the washing stage. The thickeners were maintained with high clear liquor level throughout the test with values between 28,0 -30,0 ppm. The sedimentation rate achieved low values both in the first and in the second leaching stage. Sedimentation unit area was 0,23 m² / T day, so that no sedimentation problems were presented. It was observed an increase in the sulfur content up to values of 6,52 g / L for a nickel content of 12,0g / L, which caused that the dissolved nickel in downloading stills were of 0,392 g / L and 2,58 g / L of ammonia. The sulfur content in the nickel carbonate was increased up to 6,30 %, which is 2,5% higher than conventional.

Palavras-chave : cuban Crude; liquor product; nickel extractions; nickel dissolved; nickel carbonate.

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