00000nam 2200000zi 4500 9.870111 CaOODSP 20221107163031 m o d f cr nn||||||||| 190318t19731973oncd obt f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- M38-1/262-1973E-PDF M38-1/262 Kerby, R. C., author. Thermal decomposition of hydrated sodium sulphide / R.C. Kerby and M.R. Hughson, Extraction Metallurgy Division. Ottawa : Department of Energy, Mines and Resources, Mines Branch, April 1973. ©1973 1 online resource (iv, 16 pages) : charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier Research report ; R 262 Cover title. Digitized edition from print [produced by Natural Resources Canada]. "April 1973." Includes bibliographical references (pages 15-16). "In two previous reports (1, 2), a process was outlined for the recovery of sodium sulphite solution from waste sulphite pulping liquors. The reports also contained a detailed study of the kinetics of the solid state carbonation of sodium sulphide smelts. The study indicated that the state of hydration of the sodium sulphide smelts had a substantial effect on their rate of carbonation. In particular, sodium sulphide monohydrate was found to undergo carbonation much faster than either the higher hydrates or anhydrous sodium sulphide. It was necessary, therefore, to characterize the conditions of temperature and water vapour partial pressure under which the various hydrates and the anhydrous form of sodium sulphide were formed"--Introduction, page 1. Includes abstract in French. Sodium sulphide Hughson, Michael R., author. Canada. Department of Energy, Mines and Resources. Canada. Mines Branch. Canada. Extraction Metallurgy Division. Research report (Canada. Mines Branch) R 262. (CaOODSP)9.855660 PDF 1.33 MB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-262-1973-eng.pdf