new soiutions to pyroI
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from our research and test laboratories
18“ one hearth Skinner Furnace f o r batch
18” f o u r hearth Skinner Furnace f o r continuous p i i o t plant work.
laboratory tests.
Extensive use for many years has proven the Skinner Multiple Hearth Furnace to be an efficient, flexible unit for drying, roasting, calcining, decomposing and incinerating. The following list includes typical applications and may suggest uses on other materials. Acid Sludge Activated Carbon Aluminum Chloride Aluminum Fluoride Aluminum Pot Linings Alunite Ammonium Vanadate Ammonium Sulphate Antimony Ores Arsenical Ores Barites Barium Sulphate Bauxite Beryl Ii u m Bone Char Carbon Carnotite Ores Catalysts Charcoal Clay Cobalt Ores
Colomite Copper Ores Copper Oxide Copper Sulphate Copper Sulphide Cry o I i te Diatomite Oicalcium Phosphate Electrolytic Refinery Slimes Ferro.Phosphorous. Vanadium Slag Fluorspar Foundry Sand Fuller’s Earth Gold Ore Gypsum I r o n Chloride iron Oxide I r o n Sulphate Kaolin
Lead Ores Lime Mud Limestone Litharge Magnesite Magnesium Chloride Manganese Ores Mercury Ores Mineral Pigments Molybdenite Concentrates Molybdic Oxide Nickel Catalyst Nickel Oxide Ore Nickel Suiphide Ore Pyrites Pyrrhotite Rare Earths Resin Roofing Granules Sewage Sludge
Shell Molding Sand Sodium Carbonate Sodium Vanadate Tin Concentrates Tungsten Ore Uranium Uranium Concentrates Uranium Ores Van ad ium Concentrates Vanadium Ores Zinc Ores Zircon Sand
Services available to you
, , Increased research and test work by M. & S. has resulted in many new applications and improved processes for its customers.
Mine and Smelter’s experience and research facilities are available to help you solve your specific pyro-processing problems. H
I&EC REPORTS
polarized light synchronized with the acoustic vibration through the crystal and into a camera. This procedure provides an almost continuous picture of the crystal’s acoustic strain at intervals as short as a fraction of a microsecond. I n other words, they see how the crystal changes as a sound wave passes through it or when it is made to oscillate at high frequencies. Peterson and Bridenbaugh feel the information so obtained can help to develop improved transducers, filters, and frequency control devices. However, catalyzing, inducing, or directing chemical reactions by means of ultrasonic energy seems as far away from practicality as ever. The reason for this is apparently that these chemical effects depend on cavitation within the liquid phase of the reacting system, and the yields of these effects are very low. Pierre Renaud has recently summarized what little has been determined in this area [Chim. Ind. 94 (3), 241 (1965)]. Renaud does point out, among his negative facts, the possibility that ultrasound might provide a practical answer to the unpleasant aging of certain wines. He treated a 1963 mirabelle which was almost “nonpotable” and made it comparable to that of a good summer and a (‘disagreeable’’ kirsch, which was rendered “a bit more potable.” Other wines, though, did not respond to the treatment-or were made worse by formation of aldehydes-and the energy input to accomplish improvement cost about as much as the wine itself.
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con Dept. IES-4 3800 Race Street Denver, Colorado 80216
ERRATUM American Cyanamid Co. corrects our statement in Trends, page 9, December 1965, that “Typical costs for photochromic chernicals are as low as $3.98 per pound,” states instead that “costs of an acetate compound with a 2% loading of photochromic chemical are as low as $3.98 per pound.” I
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