Commercialization is set for a process that recovers zinc from galvanized steel
Article Abstract:
Metal Recovery Technologies Inc. of East Chicago, IN, will construct a zinc-recovery plant that will process galvanized-steel scrap. The plant will have a total capacity of 100,000 tons per year. It will be installed by an 8-feet in diameter, 60-by-60-feet revolving drum which will shred scrap galvanized metal products. Aside from being shredded, the scrap metals will be heated at a temperature of 500 deg Farenheit and will be simultaneously dipped in a chemical solution which is 40% sodium hydroxide. The treated substance then undergoes electrowinning to recover zinc, which will be in powdered form.
Comment:
To build a 100,000-tpy zinc-recovery plant that will process galvanized-steel scrap
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 1998
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Heat pump cuts energy needs in multistage distillation
Article Abstract:
Calfran International Inc., based in Springfield, MA, has developed a mutliflash distillation system, that would be commercially available by the end of 1998. The economical process, that could compete with reverse osmosis, is capable of recovering salt crystals from a waste stream. The process incorporates the heat pump-driven distiller, which was long marketed, with the multistage flash distillation. Calfran Chairman Frank Hoffman said the process could have as many as eight stages, which begin with the application of heat in the circuit's last stage.
Comment:
Develops a mutliflash distillation system, that would be commercially available by the end of 1998
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 1998
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Electrochemical oxidation recovers caustic from waste streams
Article Abstract:
Huron Tech Corp., based in Delco, NC, has produced an electrochemical cell, that is capable of oxidizing spent caustic solutions so that pure caustic can be recovered and reused. Large volumes of these solutions usually come from the pulp and paper industry while smaller quantities are produced in hydrocarbon processing. In the latter case, caustic solutions are utilized so that sour gas could be sweetened and sulfur compounds can be removed from exhaust streams. The inside portion of the electrochemical material is divided by a membrane.
Comment:
Has produced an electrochemical cell, that is capable of oxidizing spent caustic solutions so that pure caustic can be recovere
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 1998
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