world

Teledyne Wah Chang Corp., Huntsville, AL
Ammonium Paratungstate

Teledyne uses a TURBO-Dryer to dry ammonium paratungstate prior to its being converted to tungsten oxide in rotary furnaces. The TURBO-DRYER® serves perfectly because of its...

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Hoechst Celanese Corporation, Bishop, TX
Biological Sludge

Aerobic biological sludge blowdown from the clarifier in the wastewater treatment system previously had been discharged to solar ponds. However, this procedure became environmentally unsuitable....

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Aerojet Corporation, Sacramento, CA
Propellant Oxidizer

The plant needed to dry a fine, (3-5 micron), high energy oxidizer containing 1.5-2% moisture down to propellant grade «0.1 % moisture). The objective was to achieve discrete particl...

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Lithium Corporation, Bessemer City, NC
Lithium Carbonate

In 1955 a Wyssmont TURBO-DRYER® was installed to dry lithium carbonate. The dryer provided such reliable service that in 1968 another TURBO-DRYER®

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Sentury Reagents, Charlotte, NC
Pyrophoric Reagents

The plant regularly dries 2,000-3,000 Ibs/day of a pyrophoric crystalline product from about 2% moisture to near complete dryness. The product has the tendency to explode if not handl...

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Sandoz Crop Protection Corporation, Jefferson County, TX
Herbicide, Methazole

This was an entirely new process that yielded a very high purity product with extremely low toxicity. The herbicide is temperature sensitive. Temperature must be carefully controlled or ...

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Rogers Corporation, Manchester, CT
Glass-filled Phenolic Resin

This phenolic resin is thermally sensitive and the extruded intermediate is frangible. Particle size of the dryer feed ranges from 1/4" to 3/8". Moisture content is about 15%,...

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Lederle Laboratories division, American Cyanamid Company Pearl River, NY
Mycelia Cake

Mycelia cake, the byproduct of Aureomycin production, contains 60% volatile butanol solvent vapors that made Lederle's use of ovens for drying dangerous. The ovens also resulted i...

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Hydrocarbon Research, Inc., Trenton, NJ
Pulverized Coal

Crushed, pulverized, finely ground coal (-60 mesh) was required for a hydrogenation process. Because certain coals are explosive when dry and finely ground, transporting "outside...

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Lemon Products Division, Sunkist Growers, Inc., Corona, CA
Jelly-grade Pectin

Pectin, from lemon rinds, is both hygroscopic and heat sensitive. If heated over 150°F, there is loss of grade, and over 180°F, there is a loss of gelling strength. Over-dryin...

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Wyeth Laboratories, Paoli, PA
Penicillin

Drying problems include air pollution by solvents, product degradation and packaging difficulties due to lumping. Extensive evaluation of different types of dryers narrowed to two con...

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New Jersey Zinc Co., Depue, IL
Zinc Sulfide

Company needed to obtain pellets suitable for processing into slab zinc from zinc flotation concentrates. 450 tons/day of zinc concentrates are mixed with a binder, recirculated fines...

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Proprietary
Waste Sludge

This company developed a waste treatment process to dry municipal and industrial sludge. The operation had to be sized for an on-site demonstration facility on a low bed trailer. A 12 shelf, 6 f...

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Arapahoe Chemicals division, Syntex Corp., Boulder, CO
Organic Chemicals

Management at Arapahoe Chemicals estimated that over 1,200 man-hours normally needed for tray loading and handling have been saved in the three years that the Wyssmont TURBO-Dryer has been ...

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AMAX Base Metals Research & Development, Inc., Carteret, NJ
Pyrophoric Zinc Powder

AMAX wanted to dry a highly pyrophoric, water-wet, metallic zinc powder from 20% to less than 0.5%moisture as well as maintain 99.99% purity. Zinc, recovered electrolytically, require...

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American Cyanamid Co., Linden, NJ
Crystals that melt near 100°F

This company had to dry a fine crystalline solid from 8 to 10% moisture to less than 0.5% without melting it to an unusable fluid mass, plus there must be positive containment of the fu...

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United States Steel Corp., Clairton, PA
Prilled Pitch

Prilled pitch, used in making carbon electrodes and synthetic graphite, was introduced in 1965. It has become popular because the free-flowing prills are like buckshot which can be handled ...

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Proprietary
Phosphors

Electronic-grade phosphors for color TV tubes require precision processing to maintain high purity and uniformity. Phosphor "body slip" is a mixture of fine crystals with wa...

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Monsanto Industrial Chemicals Co., Nitro, WV
Solvent-wet Organic Solids

The drying problem was the removal of aromatic solvents from several different, heat-sensitive, granular, organic-solids products. Thorough cleaning of equipment at changeover is requ...

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United Catalysts, Inc., Louisville, KY
Zinc Oxide Pellets

The company wanted to utilize hot exhaust gas from a nearby kiln to uniformly dry and cure 1,500 to 2,000 lb/hr of moist, claylike pellets from 25% moisture down to less than 5% without pelle...

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GTE Sylvania, Towanda, PA
Calcium Carbonate

Calcium carbonate is used to make phosphor powder for lamps. Dryness of product is critical. The former method of drying was batch-type rotating vacuum dryers that required maintenanc...

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Dan River Chemical Productions, Danville, VA
Boric Acid

Boric acid is a dry, friable, white crystalline product that has to be dried from a crystalline solution. Ground-up newspaper, used in cellulose insulation, is impregnated with boric ...

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Nabisco, Naperville, IL
Fragile Cereal Products

Cereal production at this plant involves a wide range of particle sizes, shapes and moisture levels. Belt dryers, if used, would be 300 ft long in some cases to provide adequate...

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CIBA-GEIGY, Cranston , RI
Anti-oxidant

The process required a continuous, closed-circuit drying operation to upgrade quality and lower costs for proprietary, heat-sensitive agricultural chemicals. The former drying method us...

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Allied Chemical Co., Syracuse, NY
Calcium Chloride Flakes

Because of its high 94-97% assay, about 25% less "Superflake (R)" is generally required for the same application as the more conventional 78% assay calcium chloride. Thus, the...

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Certified Processing, Hillside, NJ
Caffeine

Caffeine, obtained from de-caffeination of coffee beans, is purified for use in soft drinks and pharmaceuticals. The process produces a centrifuge cake with about 35% moisture to be dri...

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Essex Chemical Co., Clifton, NJ
Fluoride Salt

The application required the drying of the corrosive salt from 6% down to 0.1% moisture without product degradation, dusting or air pollution. The Wyssmont dryer is 6 ft in dia. x 8 ft high, 12 tra...

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American Cholesterol Products, Inc., Edison, NJ
Barium Lanolate

Dried barium lanolate is an anti-rust additive, pigment dispersant and anti-caking agent for paints and coatings. It is also an intermediate used to make purified fatty acids of lanolin...

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Proprietary
Food Grade Crystals

Drying and cooling a very fragile food grade crystal. Problems: Highly corrosive. Wet crystals cake if left undisturbed. Requires minimum crystal disintegration. Results: Dried from 3.3...

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Proprietary
Filter Cake

Drying and solvent recovery of a very heat-sensitive material. Wet material forms balls. Dried lumps disintegrate readily to powder. Material very abrasive. Problems: No overheating. Recover ...

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Proprietary
Plastic Granules

Drying and heating. Will fuse into solid if not agitated. Highly hygroscopic. Problems: Remove last traces of moisture, heat uniformly. Granules must be free-flowing. No batch contamination. Plasti...

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Proprietary
Bleach, thick flake

Low temperature drying. Bleach material formerly dried in vacuum dryer. Problems: Very corrosive, very dusty. Readily ignitable. Produce non-dusting product with high chlorine assay. Re...

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Proprietary
Drug powder

Subliming. Refining an obnoxious drug formerly produced by batch sublimation. Problems: Change to continuous production, improve purity, eliminate bad working conditions. Results: Dust free operati...

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Proprietary
Deoxidizer powder

Drying with solvent recovery. Remove and recover alcohol from highly toxic and obnoxious deoxidizing agent that disintegrates readily into a fine powder. Problems: Dry without dust or f...

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Proprietary
Sewage sludge

Drying without backfeeding. Corrosive and abrasive sewage sludge with 84% water. Wet material highly plastic, balls readily. Problems: Eliminate backfeed. Only small space available outdoors for in...

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Proprietary
Filter cake paste

Drying without backfeeding. A thixotropic, highly plastic filter cake, 12% solids, corrosive, disintegrates into fine powder when dried in rotary with back feed. Problem: Dry without backfeed with ...

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Proprietary
Catalyst pellets

Curing and drying. Problems: Uniform drying with minimum breakage. Results: Breakage negligible. Very uniform drying provides high test values for dried product.

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Proprietary
Ceramic-Wax Mixtures

Major supplier of automotive electrical parts. The new dryer takes a wet feed with 10% free moisture and discharges a uniform granular mixture with less than 0.3% moisture. Drying temperatures are ...

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Sentury Reagents, Inc. Charlotte, NC
Pyrophoric Material

Regularly dries 2000-3000 lbs/day of pyrophoric crystalline product from about 2% moisture to near complete dryness. The product has the tendency to explode if not handled carefully. Vacuum tray dr...

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Sierra Aluminum Co., Riverside, CA
Aluminum Hydroxide

Many of the company's processes involve acid cleaning and etching of aluminum. The resulting waste solution is neutralized and precipitated out as aluminum hydroxide. After squeezin...

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Limtech, Shawinigan, Quebec
Lithium Carbonate

Produces high-purity lithium carbonate that's used for manufacturing lithium ion battery cathodes, electrolyte salts, and semi-conductors. One important process step - drying the lithium carbon...

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