Preguntas Frecuentes - Frequently Asked Questions
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Littleford Day

When should I run some tests?






How can we set-up a fast preliminary test, to check some equipment(s) feasability?






How about if I want to run tests at my plant?




How about confidentiallity?



In which cases should I use a simple, non-expensive mixing device?







I need to mix some powders with various densities: from very light to very heavy. What equipment should I use?



When mixing, due to some moisture in my product, I get some undesirable lumps. Which is the best way to get rid of them?


I have a rather Temperature-Sensitive material or either I need to keept the particle size of my material during either mixing or drying operations. What equipment should I use?



Need to instantanize my powders, adding a low amount of lecithine. Keep having problems using a low-speed mixer. What´s the best option?




Need to dry, but at a low temperature, to avoid material degradation. What´s the best way to accomplish this?





Have a rather heavy paste which needs to be mixed. Which options do I have?


Need a highly efficient dispersion of pastes, but at the same time have to control temperature. How can I accomplish this?


Need to dry my paste, but it becomes very sticky at certain drying step. What options do I have?



After mixing some dry powders, I need a granular final product, without fine powders. How can I accomplis this?




My Cowless-Type dispersers don´t seem to be able to disperse certain pigments. What´s an option?


My operation requires widely different batch sizes to be handled in the same vessel. What mixer should I use?


Need high-pressure operation in my process. What type of reactor should I have?



What types of seals should I use in my equipment?




What´s the delivery time for your equipment?







How about your Service & Spare-Parts Departments?






Unless your application is a simple dry-powders mixing operation, in which previous experience will tell us batch times and final product quality, it is generally suggested to perform either In-Plant or Lab. tests, to optimize the process and set-up the right specifications of production equipment.

If your application is a mixing and/or drying operation, we can probably run a preliminary feasability test with only 5 Lts. of product. For proper scales-up, we usually would require an additional one with 90 Lts. batchs. For pastes dispersing, reactions or other applications, required amounts for testing will vary.


We have a wide array of rental units which could help you run your own In-Plant tests, run Market-Tests or even use them for production requirements.


We sign Confidentiallity Agreements to keep the secrecy of your process and application.


Low-Speed mixers, such as Ribbon Blenders or some tumbling units, are recommended for simple mixing of materials with similar densities, since those are the cheapest mixers. These types of mixing devices are not efficient for mixing products with different densities, dispersing any liquid into powders or for heat-exchange operations.


Either our "Mechanically-Fluidized-Bed" FKM mixers or the Nauta-Type, depending on your production requirements.


For lumps deagglomerating we use the high-speed choppers of our FKM/DVT mixers, designed to avoid lumping while performing high-efficiency mixing, drying or reacting operations.

The Nauta-Type units are designed to provide accurate mixing or/and drying while keeping the integrity of the particles at low temperatures, due to it´s slow motion. Batch times are usually larger than on the FKM types, with the same accuracy.


Proper lecithinization requires coating of each powder particle with the right amount of lecithine, while avoiding formation of lumps. High-Speed choppers, combined with suitable lecithine spraying systems will perform the very best operation and high solubility of final product.


Vacuum Drying. If required final product requires to keep original particle size, either a Nauta-Type dryer or an FKM unit without chopper and at proper speed. If particle size is not a main concern, an FKM will probably perform faster drying times.


If it´s a really heavy paste, not many. Sigma mixers are about the only option for theses cases.


The Daymax liquid dispersers have Std. jackets, to control paste temperature during the high-speed dispersion, while lowering evaporating losses due to it´s closed-vessel design.

There are several drying procedures that can be tested in order to avoid sticking problems. Only a few of applications will finally require expensive or complicated drying options, such as tower dryers.

By means of proper use of plows or blades mixing elements with intermitent utilization of chopper action and addition of aglomerating liquids, final required granule size can be achieved in several instances. Testing is usually required.

Faster Blade Tip-Speed. The Daymax dispersers provides a much faster tip speed, which is required to properly disperse certain tough solid particles.

Only if the batch sizes goes down to less than 35% of the vessel size, a Nauta-Type unit would be considered, since an FKM-Type is generally a faster, more effcient device.

Vessels cost are greatly affected by it´s pressure rating, therefor, production equipment has to be manufactured for the specific required internal pressure, for cost optimization.

Lots of options, from Std. packing designs to air-seals and double-face mechanical types. Totally depending on your specific application.


From inventory (Rental or Guaranteed In-Stock Units), all the way to long manufacturing periods for High-Inernal-Pressure Reactors (up to 36-40 weeks). Generally, equipment is built for the specific application, with the proper accesories and manufacturing requirements, to optimize both your process and the equipment cost.


We maintain a direct sales force (not Reps.), to provide the very best direct support to our equipments, so as a fully stocked warehouse, providing parts to all our line of equipments. Our service technicians have years of experience providing state-of-the-art support.

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Littleford Day

Where Processing Ideas Become Reality.  Donde las ideas de proceso se hacen realidad.