Thousands of Fox eductor systems have been provided to enable industrial users to inject or convey additives reliably with no maintenance, no blowback or leakage, and with no moving parts. Small 1"-2" Fox eductors driven with small Rotron blowers running at 2 - 3 psig provide highly reliable, maintenance-free, cost-effective additive injection. Typical applications include:

Flue Gas Conditioning - Activated carbon, Calcium carbonate
For more information, download Bulletin 305
Acid Neutralization - Limestone
For more information, download Bulletin 306
Pre-Coat; Filter Cake for dust collection filter media - talc, gypsum,
Inoculants - Foundry additives
Minor Food Ingredients - Spices, sugar, starch
Flow Additives - Acrawax, SiO2
Flue Gas Desulfurization - Hydrated lime, Limestone, CaCO3

Fox Valve can supply as much of your additive injection system as you require. At right is a pre-coat injection system, which includes a DP transducer, feeder, blower, and eductor. This system senses when the filter media needs pre-coat and directs to the feeder to dose material only when necessary.

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This photo shows a fully sanitary Fox eductor mounted with a sanitary feeder mounted on a skid suitable for washdown at a food plant.

This photo shows a skid-mounted additive injection system that includes a vacuum transporter, for sucking powder from a gaylord, a volumetric feeder, and a Fox/Rotron eductor transport system.

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Many of our Case Studies illustrate important additive injection applications with Fox eductors:

• Acid neutralization at incinerator, limestone Case Study #65
• Precoat injection, talc Case Study #64
• Additive injection into existing convey line at 8 psig Case Study #47
• FGD/ Sorbent injection; limestone Case Study #27
• Food additives to a blender Case Study #25
• Minor Ingredients, foods Case Study #17
• Hydrated Lime Case Study #52