Powder Processing Technology: The Sturtevant Solution
Micronizer® Jet Mill
The Micronizer® jet mill is a fluid energy mill employing compressed air, steam or gas to produce particles less than one micron. High-speed rotation subjects the material to particle-on-particle impact, creating increasingly smaller fines. The Micronizer® advantage is in its very low particle size and narrow PSD (particle size distribution) making it the most popular lab jet mill available today. The Micronizer® is used in a wide variety of applications where small particle size, increased surface area and narrow PSD are critical. Typical applications include TiO2, cosmetics, pigments, pharmaceutical powders, carbon black, agricultural powders, lactose, precious metals, resins, heat sensitive materials, and toner.
The Infestroyer® is an impact mill specifically designed for the food industry. Nuisance insects entering food products must be eliminated with a 100% kill rate while preserving the particle size of the powder. The Infestroyer® delivers on this commitment by offering a rugged, impact mill design that effectively eliminates adults, larva and eggs from products such as flour and grain. The Infestroyer® combines easy cleaning with reduced maintenance since there are no screens to clog and impact areas offer quick access. The Infestroyer® and all Sturtevant food processing products are available in FDA / USDA type design, including 316 stainless construction, without certification which saves money while offering a feature rich design.
The Whirlwind® Air Classifier incorporates a self-contained fan and rejector blade classification system. Its internal fan design does not require cyclones, air locks or dedicated baghouse for product collection of particles in the range of 100 to 400 mesh. Offering a significantly smaller footprint than screening separation and much lower capital cost, the Whirlwind® is designed to process abrasive materials with long-lasting ceramic liners or standard materials with economical steel liners. Typical Whirlwind® applications include aggregates, poultry rendering, crushed stone, ceramics, diatomaceous earth, flyash, food products, gypsum, metals, silica sand, soda ash and more.
The Side Draft™ High Efficiency Air Classifier is a versatile, energy-efficient system for consistent separation of particles in the 100 to 400 mesh range offering a compact, retrofitable design and durable, wear-resistant materials. The Side Draft™ delivers consistent, high-quality product regardless of variations in feed material through user-friendly air flow and speed changes. The Side Draft™ is capable of processing both abrasive and non-abrasive materials with optional ceramic wear liners and typical applications include aggregates, crushed stone, cement, ceramics, chemicals, coal diatomaceous earth, flyash, food products, gypsum, hydrated lime, minerals, plastics, shredded fibers, silica sand and soda ash.
The Simpactor® pin mill is a centrifugal impact mill that reduces low to medium density materials to uniform, fine particle sizes of 50-200 mesh. The Simpactor® is used in milling applications where low maintenance and low wear are critical. Typical Simpactor® milling applications include food product processing such as corn fractionation, flours, starch densification, corn slurry, sugar and sweeteners. Semi-abrasive material applications including aluminum sulfate, fertilizer, gypsum, soda ash, deagglomerate powders (including tungsten), talc, clay and kaolin. The Simpactor® is also used for flue gas treatment to save up to 50% on materials such as trona, hydrated lime and sodium bicarbonate.
The Powderizer® is a classifying impact mill capable of reducing powders down to 5 microns. It is the workhorse in particle size reduction applications due to its combination of impact milling and air classification in a single unit. The flexibility of operation allows for easy processing of a wide range of products requiring efficient and economical particle size reduction. Typical Powderizer® applications include food products such as cocoa, defatted soy meal, corn starch, lactose, rice, sugar and sweeteners. The Powderizer® also handles a variety of industrial applications such as agricultural chemicals, boric acid, limestone, pre-calcined ceramics, soda ash, lithium, pharmaceutical powders, trona, sodium bicarbonate, talc, clay and kaolin.
The SuperFine® Air Classifier is designed to be used in combination with auxiliary equipment such as dust collection and fan systems. The SuperFine® advantage is the high degree of accuracy in the separation of particles from 3 to 45 microns with very tight particle size distribution and throughputs up to 30,000 lbs per hour. Its compact design makes it ideal for retrofitting to existing applications and is capable of both abrasive and non-abrasive materials. Typical SuperFine® applications include ceramics, chemicals, diatomaceous earth, food products, minerals, plastics, coal, metal oxides, iron ore, sodium bicarbonate, soda ash, shredded fibers, tobacco and more.
Roll Crushers constructed from heavy-duty cast iron and delivering uniform granular product with minimal fines, offering up to 4:1 material reduction ratio. Sizes available from 1/4 ton to 44 tons per hour. Designed for aggregates, ceramics, chemicals, minerals and sintered metals.
Jaw Crushers designed for decates of dependable service and efficient, non-choking operation with up to 8:1 material reduction ratio. Sizes available from 1/2 ton to 10 tons per hour. Designed for aggregates, ceramics, minerals and sintered metals.
Hammermills designed for the ultimate general size reduction of virtually any friable material. Materials are reduced to granular powder at a high rate through the use of swinging bar hammers. Sizes available from 1/2 ton to 6 tons per hour.
Sample grinders with open door, disc type construction are capable of very fine particle reduction, producing products as fine as 100 mesh. Sizes available from 50 lbs to 800 lbs per hour.
Rotary Crushers offer fine or coarse crushing capabilities for soft and moderately hard materials which are reduced by shear between rotating grinding nuts and the case wall liner. Sizes available from 1 ton to 10 tons per hour. Designed for coal, coke, chemical gypsum, limestone and salt applications.
