DRYERS and CALCINERS
In 1993 IDRECO S.p.A. acquired Del Monego a company designing and supplying dryers, calciners and incinerators since 1935. These industrial equipment and complete plants have been therefore sold in the recent years as part of the IDRECO line of products named “IDRECO-Del Monego”.
The wide production of dryers of IDRECO-Del Monego technology allows to propose, for each type of product to be treated, the most suitable thermal dryer such as :
- Direct Rotary Dryers which can use as heating media: flue gases, for sand, clay, mineral products treatment; hot air, produced by heat exchangers, for the drying of plastic material and heat sensible products and which cannot come in direct contact with flue gases.
- Indirect Rotary Dryers which are internally contained to a refractory furnace which is crossed by flue gases, for carbon black drying.
- Steam Tube Rotary Dryers for melamine and soya bean.
- Flue Gas Tube Rotary Dryers for drying of dusty materials with initial low moisture, such as talcum and carbon.
When it is requested to heat material up to high temperatures, also higher than 1000 °C, rotary calciners are used. They are classified as:
- Direct Calciners where the material, in direct contact with combustion gases, normally in counter-current way, is brought up to 1200 – 1300 °C. The main applications are: clay calcining, metal catalyst production, activated carbon regeneration.
- Indirect Calciners where the material is heated up to 1100 °C by combustion gases which cross a furnace. Indirect calciners are used when the product cannot come in direct contact with combustion gases and when it is requested to operate in a controlled atmosphere. The main applications are: molecular sieve, alumina, silica gel.
