THE METHOD OF CHOICE FOR CHEMICAL MANUFACTURERS!

Pastillation provides an efficient, cost effective process for the continuous converting of molten products into uniform, round and dust free granules ideal for bagging, transporting and bulk material handling systems.

The pastillation process has the flexibility to produce pastille sizes ranging from 1-25 mm in diameter and with viscosities ranging from 5 – 30,000 mPas (cP), based upon processing conditions and need.

From pastillator heads to complete turnkey units, up and down stream equipment, our group can provide customized solutions for your pastillation process.

The ZN system

The ZN system, predecessor the“DN,” from KAISER SBS originated in 1953 making it the first pastillation process invented.

The ZN system operates on a drop forming principle achieved through the up-and-down motion of the needle inside the nozzle.

The pastille size is primarily determined by the diameter of the needle and nozzle, the liquid level inside the tub and the number of needle strokes.

Benefits:

• Low cost solution for low to medium capacities
• Processing of extremely low viscosity products
• Electrical heating capabilities
• Gastight housing available
• Feeding temperatures up to 400° C (752º F)

Functional diagram:

Typical products:
Acetanilide, Bisphenol A, Caustic soda, Disodiumtetrasulfide, Fatty acids, Fatty alcohols, Laurinlactam, Maleic anhydride, Monoglyceride, Neopenthylglycole, Paraffins, Pet food, Potassium soda, Succinic anhydride, TMA, TNT, TPP, Waxes, etc.

The GS system

The GS system, originally developed in the 60ties by KAISER SBS, is designed for medium to high viscosity products.

Contrary to the ZN system, the needles are replaced by a cylinder and piston arrangement.

The up- and-down movement of the cylinder and piston allows the molten product to be deposited on to the belt creating uniform pastilles.

Benefits:

• Low cost solution for high viscosity products
• Only solution for products with a temperature over 300° C (572º F)

Functional diagram:

Typical products:

Antioxidants, Atactic polypropylene, Bitumen, Coal tar pitch, Depilatory wax, Gelantine, Hotmelts, Hydrocarbon resins, IC – resin, Novolac resins, Phenolic resins, Polyethylene wax, Sodium-alkylsulfonate, Softeners, TMQ, etc

Rolldrop^®

The Rolldrop system, developed by SBS Steel Belt Systems, was first introduced in 1996. 
The Rolldrop^® is the only rotating pastillator not requiring disassembly for cleaning or maintenance as it does not have inner parts containing product.

A further advantage when compared to other rotating pastillators is the ability to measure and control melt levels allowing for a controlled feed rate.The RollDrop^® consists of a product reservoir that is attached to a rotor equipped with rows of teeth.

Product is picked up by the teeth and deposited by a combination of gravitational and centrifugal forces onto the cooling belt, forming pastilles. The pastille size is determined by the shape and width of the teeth.

Without internal piping, the RollDrop^® allows for easy cleaning and maintenance. Due to the pivoting product reservoir, cleaning can be performed in place. By pivoting the reservoir one has complete access to the rotor which can be cleaned with a metal brush.

Benefits:

• Lower operating temperature
• Ideal for running products with higher melting points
• Wide range of product applications
• Increased output due to triangular depositing formation

Functional diagram:

Typical products:

Aluminium sulphate, Caprolactam, Castor oil, Chocolate, Chromic acid, Epoxy resin, Fertilizers, Ketonic resin, Modified stearic acid, Modified waxes, Phenolic resin, Polyamide resins, Polyester resins, Polyethylene waxes, Rosin resins, etc

Rollomat^®

The Rollomat^® system, initially developed in 1989 by KAISER SBS, covers the widest viscosity range of all rotating pastillators.
The Rollomat^® rotary depositor has an operating principle similar to a gear pump.

The heart of this system is an inner-geared, hollow cylinder with nozzles positioned, between the teeth. Along the lower portion of the hollow cylinder a pressing roll engages with the teeth of the hollow cylinder and the product is fed at the designated rate through the plug in lance.

From where it flows onto the rotating pressing roll and becomes sandwiched between the outer cylinder and inner pressing roll. Each time the teeth of the hollow cylinder engage with the teeth of the pressing roll product is forced through the nozzles and onto the cooling belt. The Rollomat^® has a heated product scraper (refeed bar) ensuring the outer surface of the cylinder is clean upon reaching the drop-off point.

Benefits:

• Ideal for running products with higher melting points
• Lower operating temperatures
• Wide range of product applications

Functional diagram:

Typical products:

Aluminium sulphate, Bitumen, Caprolactam, Castor oil, Chocolate, Chromic acid, Epoxy resin, Fertilizers, Ketonic resin, Modified stearic acid, Modified waxes, Petroleum resin, Phenolic resin, Polyamide resins, Polyester resins, Polyethylene waxes, PVC additives, Rosin resins, etc.

AccuDrop^®

The AccuDrop^® system, developed by Berndorf Belt Systems USA, is a rotary depositor operating through a stationary distribution system consisting of a stator and a rotating outer shell.

The stator and seal bar system provide a tight seal against the rotating shell and even product distribution along the shell.

The shell has a patented raised pyramid design eliminating product build up in between the holes and further allows the AccuDrop^® to operate without a re-feed bar.

The holes in the seal bar are aligned with the holes in the outer shell of the AccuDrop^® and product drops are dispersed onto the cooling belt forming pastilles. The rotational speed of the AccuDrop^® is synchronized with the speed of the cooling belt thus leading to uniform, round pastilles.

Pastille size is determined by the diameter of the holes in the AccuDrop^® shell, the product flow and speed of rotation.

Benefits:

• High production rates
• Consistent product quality
• Low maintenance

Functional diagram:

Typical products:

Antioxidant, Calcium chloride, Fatty alcohols, Hotmelts, Hydrocarbon Resins, Magnesium chloride, Waxes, Wax blend, etc.