The Weldon process is a process developed in 1866 by Walter Weldon for recovering manganese dioxide for re-use in chlorine manufacture. Commercial operations started at the Gamble works in St. Helens in 1869. The process is described in considerable detail in the book, The Alkali Industry, by J.R. Partington,D.Sc.
The common method to manufacture chlorine at the time, was to react manganese dioxide (and related oxides) with hydrochloric acid to give chlorine:
MnO2 + 4 HCl → MnCl2 + Cl2 + 2H2O
Weldon's contribution was to develop a process to recycle the manganese. The waste manganese(II) chloride solution is treated with lime, steam and oxygen, producing calcium manganite(IV):
The Weldonprocess is a process developed in 1866 by Walter Weldon for recovering manganese dioxide for re-use in chlorine manufacture. Commercial operations...
California Weldon, Illinois Weldon, Iowa Weldon, North Carolina Weldon Township, Michigan Weldon, Texas Weldon Spring, a city in Missouri People named Weldon, Welldon...
hydrochloric acid from the Leblanc process was used and the manganese dioxide was recycled by the Weldonprocess. The production of chlorine and hypochlorite...
this process, chemist Carl Wilhelm Scheele was the first to isolate chlorine in a laboratory. The manganese can be recovered by the Weldonprocess. Small...
October 1832, the son of Reuben Weldon and his wife, Esther Fowke. Weldon was brother to Ernest James Weldon, founder of Weldon & Wilkinson Ltd. In 1854 he...
Weldon Spring Ordnance Works (WSOW) was a 17,323-acre (70.10 km2) U.S. Government-owned, contractor-operated (GOCO) facility in St. Charles County, Missouri...
Walter Weldon developed a process in the chlorine production process for reuse of manganese by treating the manganese chloride with milk of lime and blowing...
Sir Anthony Weldon (1583–1648) was an English 17th-century courtier and politician. He is also the purported author of The Court and Character of King...
Kevin Ernest Weldon AO (1933 – 9 November 2023) was an Australian book publisher, businessman, philanthropist and supporter of the lifesaving movement...
Weldon 1996, p. 484. "Linda Blair Biography (1959–)". Film Reference. Retrieved September 28, 2017. Young 2000, p. 541. Weldon 1996, p. 395. Weldon 1996...
Martin 1990, p. 88. Weldon 1996, p. 37. Weldon 1996, p. 131. Weldon 1996, p. 189. Weldon 1996, p. 482. Weldon 1996, p. 297. Weldon 1996, p. 294. Hinson...
Archived from the original on December 1, 2010. Retrieved January 7, 2011. Weldon, R. "An Introduction to Synthetic Gem Materials" (PDF). Archived (PDF) from...
Weldon Lamar Mathis (April 2, 1926 – October 20, 2001) was an American labor leader. He was secretary-treasurer of the Teamsters from 1985 to 1991. After...
Navy Petty Officer Felix de Weldon. De Weldon was an Austrian immigrant schooled in European painting and sculpture. De Weldon could not take his eyes off...
depth of mental processing. More analysis produce more elaborate and stronger memory than lower levels of processing. Depth of processing falls on a shallow...
the North American box office in 1953. The supporting cast includes Joan Weldon, George Macready, Alfonso Bedoya, Lee Marvin, and Ernest Borgnine. Jeff...
Wizards of the Coast's own Dungeons & Dragons podcast—Dragon Talk. Glen Weldon, in a review of Dimension 20 for NPR, commented that "Mulligan is such a...
James Version), and the 1604 revision of the Book of Common Prayer. Anthony Weldon claimed that James had been termed "the wisest fool in Christendom", an...
PMC 2595867. Petzal, David E. (2014), The Total Gun Manual (Canadian edition), WeldonOwen. Phillips, Henry Prataps (2016), The History and Chronology of Gunpowder...
Adrian), Barbara Eden (Carla Adrian), Paul Fix (District Attorney), Joan Weldon (Marion Keats): 91–92 8 8 "The Case of the Crimson Kiss" Christian Nyby...
(1696) Weldon, K. B., Taubert, J., Smith, C. L., & Parr, L. A. (2013). 'How the Thatcher illusion reveals evolutionary differences in the face processing of...
in a mass stabbing at 13 locations on the James Smith Cree Nation and in Weldon, Saskatchewan, Canada. Some of the victims are believed to have been targeted...
processes, including increased commitment to the group, thorough planning and quality-monitoring of group work, and improved effort exertion (Weldon,...
29, 1933. p. 1. Retrieved October 3, 2022 – via Newspapers.com. Whisler, Weldon (November 14, 1959). "Bares Secret Kept 26 Years". Chicago Tribune. pp. 1...
easily and can be retrieved from symbolic mode, while the dual coding process using words is more difficult for both coding and retrieval. Another explanation...
Louis, Mo: Saunders/Elsevier. pp. 15–16. ISBN 978-1-4160-2888-8. Brown, Weldon G. (15 March 2011), John Wiley & Sons, Inc. (ed.), "Reductions by Lithium...
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