Cane juice Extraction

The main purpose of cane juice extraction is to extract the juice from the sugarcane stalks in a certain way so as to obtain as much juice as possible effectively and efficiently. To extract sugarcane stalks there are 2 stages including sugarcane preparation and milling.

1. Cane Handling & Preparation

Cane handling and preparation is the first treatment after sugar cane is harvested from the fields and enters the factory. The purpose of handling and preparation is to properly feeding the sugarcane raw materials by open up the sugar cane cells so that they can be extracted optimally and steadily at the milling station with minimal losses.

The cane handling and preparation process includes sugarcane unloading, cutting, and shredding the sugar cane becomes fiber and ready to be extracted at mills.

SUTECH Thailand and PT Indo Sutech Sejahtera are fully equipped to supply all cane handling and preparation equipment such as cane unloader, feeding table, cane kicker, cane cutter, hammer/shredder and cane carrier with adaptive variable drive and delivery system.

The benefits of our design features in cane handling &preparation equipment system:

• Efficient power and energy consumption
• The most suitable and effective cane delivery system to mill station
• Optimum achievement of Preparation Index (PI)

Cane Handling & Preparation Equipments :

Truck Tipper

Truck tippers equipped with hydraulic system which tilts the truck body to slides down the load of sugarcane in the tailgate falls to the receiving conveyor or the feeding table. The faster cycle per unloading process leads to time and energy efficiency.

Cane Kicker

Cane kicker/leveller is an equipment which ensurethecanefalls on thecarrierin constant lots or height of cane to avoidaheavyfallof large masses and unsteady load which wouldbeable to provoke chokesat the cane knifes.

Cane Cutter

Cane cutter or cane knife is used to cut the sugar cane into small pieces. It helps the hammer/shredder performance to shred the sugar cane into fiber.

CaneShredder/Hammer

Cane shredder is used to turn the sugarcane stalks into fiber by crushing the sugarcane cells to make them open and more easily to extract.

Electromagnet Separator

The function of electromagnet separator is to remove the pieces of iron which get in the sugarcane fiber feed by pulling it using a magnetic force. The pieces of iron in feed is quite harmful for mills because it can damage the mill roller groove, and causing a severe loss. The commonest objects are pieces of knife blades, broken pieces of slings, bolt and nut, sling-hooks, monkey wrenches, etc.

Cane Carrier/ Conveyor

In cane preparation, the carrier/conveyor serves to transport sugarcane and fiber from one equipment to another. For example, from the feed table to the cane cutter,then cane cutter to hammer, and then from the hammer to the tandem mill.

2. Juice Extraction (Mill Tandem and Diffuser)

The objective of milling is to separate the sucrose-containing juice from the remainder of the cane maximally with efficient cost and energy.

With our best consideration which involved on farm aspect capacity, we like to provide juice extraction system which most suitable for client. The sugar cane milling tandem can be supplied with 3 roller, 5 roller, 6 roller mill with shaft mounted and foot mounted planetary gear drive systems,  including  bagasse carrier and return bagasse carrier.

In 2013 Sutech signed a technology agreement with the Company Tongaat Hulett of South Africa. Under this agreement Sutech have the license for Tongaat design of diffuser for both cane and bagasse applications. SUTECH sugar mill machinery provides cost effective solution and bring state of art of technology, proven maximum efficiency that lead to high reliability

The advantages :

• Low power consumption
• Less re-absorption
• High extraction of juice with low operational cost
• Less maintenance
• High throughput
• Low bagasse moisture
• Low sugar loss in milling
• Flexibility for further expansion

Intermediate Carrier

The function of intermediate carrier to deliver the remaining sugar cane fiber or bagasse that have been extracted from one mill tandem to another for repetitive extraction. The intermediate carrier can be driven by the mill using sprockets and chains or by individual actuation using an electric motor.

Cane Mill No. 1, 2, 3 & 4

Mill Roller 

PT Indo Sutech Sejahtera are able to supply any configuration of mills, three roller, four roller and six roller units. All mills consist of heavy cast steel head frames, high quality forged steel shafts and consistent quality cast iron roller shells. The shell can be customize to any individual clients specification. Each mill unit is commonly driven by separate motor power either electric motor which is commonly used in modern sugar mills, or steam engine/turbine in the old sugar mills.

Diffuser

In addition to the milling, another method of sugarcane extraction is diffusion. Basically, diffusion is an extraction of juice by leaching of prepared cane with the aid of hot water. There are two types of diffusion technology used in sugar industry:

• Cane diffusion, where prepared sugarcane is made to pass through the diffuser for juice extraction followed by one or two de-watering mills to reduce the bagasse moisture for suitable condition of combustion in the boiler
• Bagasse diffusion, it is preceded by a mill where primary juice extraction takes place and the bagasse coming out of the pre-extraction mill, then pass through the diffuser followed by de-watering mills as above

Rotary screen for Juice

The juice from the extraction plant contains a significant quantity of small pieces of bagasse which leads to a blockage in equipment like heaters. Juice screening is commonly used to remove this matter. Generally, there are several types of screen, including cush cush screen, DSM screen and rotary screen.

The rotating cylindrical juice screen are becoming more common in new installations. They differ from all the old designs in that wedge wire screen is used and the juice is introduced inside the rotating screen, with the separated bagasse falling out of the end of the sloping screen. This type of screen has a higher performance achieved than other types and easier to clean since a single set of steam nozzles can clean the whole drum, but a well maintenance is needed.