57:, Germany, he developed a wet electrolytic method of extracting the metal, which he patented in 1894. He left BHP and in 1895 founded the Sulphide Corporation (Ashcroft Process) Limited with a capital of £1,100,000, with which it purchased Ashcroft's patents and the
65:, near Newcastle, New South Wales. The process failed to live up to expectations however. The problems involved in up-scaling had been minimized, and the benefits exaggerated. Despite major modifications under general managers
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Sulphide
Corporation Ltd. went into voluntary liquidation in 1950, and was taken over by Sulphide Corporation Pty. Ltd., created for the purpose, a wholly owned subsidiary of Consolidated Zinc.
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Ashcroft returned to
England amid controversy, and with James Swinburne continued experimentation, but despite being based on sound scientific principles, commercial success eluded them.
73:, the process was deemed a failure and the plant largely dismantled. The Sulphide Corporation continued in the business of refining zinc ore, but reverted to the roasting method.
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tailings at the mines, regarded as waste due to the expense and complexity of existing methods of extracting zinc metal from the ore. Collaborating with one Dr.
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34:, England, a son of George Ashcroft and his wife Sophia, née Davey. After qualifying as a mechanical and electrical he was brought out to Australia by
138:
J. W. Turner, 'Ashcroft, Edgar Arthur (1864–1938)', Australian
Dictionary of Biography, National Centre of Biography, Australian National University,
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22:(5 September 1864 – 24 August 1938) was an electrical engineer who developed an electrolytic process for extracting zinc metal from its sulphides.
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facilities. While there, he and John Howell developed a steam generator using slag from the smelters as a source of heat.
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61:. In 1897 Ashcroft and the corporation set up the world's first electrolytic zinc works at
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Several mining engineers in
Australia were closely associated with Clausthal: Schnabel,
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182:. No. 5568. New South Wales, Australia. 24 April 1897. p. 12
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142:, published first in hardcopy 1979, accessed online 3 January 2019.
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http://adb.anu.edu.au/biography/ashcroft-edgar-arthur-5067/text8449
210:. No. 8, 603. Queensland, Australia. 16 June 1900. p. 2
238:. No. 29594. Victoria, Australia. 3 March 1950. p. 9
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16:Electrical engineer and metallurgist (1864–1938)
45:He was impressed with the vast quantities of
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38:to instal an electric lighting plant at its
246:– via National Library of Australia.
218:– via National Library of Australia.
190:– via National Library of Australia.
109:Australasian Institute of Mining Engineers
91:, survived by his wife Irene, née Dulier.
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115:Institution of Mining and Metallurgy
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279:19th-century Australian inventors
289:Australian electrical engineers
230:"Sulphide Corp. Reconstruction"
87:, Scotland, and died in nearby
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284:Australian chemical engineers
179:The Daily Telegraph (Sydney)
36:Broken Hill Proprietary Ltd
310:
274:Australian metallurgists
207:The Telegraph (Brisbane)
174:"New South Wales Fields"
59:Broken Hill Central Mine
294:History of Broken Hill
30:Ashcroft was born in
20:Edgar Arthur Ashcroft
79:Ashcroft retired to
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240:. Retrieved
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212:. Retrieved
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184:. Retrieved
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81:Ancrum House
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63:Cockle Creek
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269:1938 deaths
264:1864 births
163:for example
103:Memberships
40:Broken Hill
258:Categories
157:GHF Ulrich
121:References
95:Postscript
32:Sunderland
242:3 January
214:3 January
202:"Patents"
186:3 January
113:(London)
55:Clausthal
235:The Age
26:History
89:Polton
244:2019
216:2019
188:2019
159:and
53:of
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176:.
155:,
129:^
83:,
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