Engineering

Ph. +61 7 3245 4522

ENGINEERING

Recycling Design & Technologies (RDT) is a specialist engineering company that assists Waste Companies and Councils around the world to design, build and maintain their own Recycling Centres.

RDT can also provide Customised Design Solutions and Engineered Innovations to existing Recycling Facilities. RDT builds and maintains long relationships with its customers and suppliers. This ensures the successful delivery of projects and maintains the highest levels of service and support
during the crucial stages of Commissioning and Start Up and throughout the life of the Recycling Facility.

RDT has delivered numerous turn-key waste and recycling facilities since our inception. Our clients include major waste companies in the private sector as well as local and regional councils around the world.

Design

Feasibility studies on recycling and waste facilities.
Detailed operational analysis, product auditing and review of existing facilities.
Full engineering designs for proposed facilities including 3D modelling and 2D layout and sectional drawings.
Rendered 3D presentation videos of proposed facilities for marketing, investment and educational purposes.
Design engineering and drafting of existing facilities for plant surveys and refurbishments.
Equipment design, prototype development and manufacture.

RDT can offer its clients full engineering designs for all types of recycling and waste handling facilities. Our design team which encompasses civil and mechanical engineers as well as drafting personnel, use their extensive experience and intimate knowledge of the recycling industry to create solutions that are both practical and efficient.

We use the latest in three dimensional (3D) drafting software, structural analysis and conveyor calculations to ensure that our designs withstand the harsh environments they are constantly subjected to and stand up to the expectations of years of faultless operation.

Our detailed 3D design enables us to supply and install quality equipment safely and accurately assisting us to help keep projects on time and under budget.

The design team is conversant with standards in Australia, New Zealand and the United Kingdom, in particular those regarding OH&S, machinery guarding and maintenance access.

Management Systems

RDT has implemented a full management system in its operation covering a extensive list of areas:

Occupational Health & Safety

Environment

Quality Control

Project Scheduling

Procurement

Accounting

The Occupational Health & Safety system is one that RDT prides itself on. To maximize the level of safety of our employees, contractors and other parties we utilize a specific Workplace Plan for each project.

Our Workplace Plan includes the following information:

Company information
Project information
Document control
Project works & control
Public protection
Contractor management
Project consultation
Site rules
Site inspection
Common plant & equipment
Permit to work systems
Hazardous substances
Emergency response

We also include the following documents to be completed on each project:

Site Inspection Checklist
Contractor Register
Project Meeting
Site Attendance
Hot Work Procedure
Isolation Procedure
Isolation Log
Hazardous Subs Assessment
Hazardous Subs Register
Emergency Response

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C&I and C&D Facilities

RDT have been engaged as the lead design engineering and construction firm on several C&D waste recovery facilities within Australia, New Zealand and in Singapore.

These types of plants require rugged, reliable and efficient solutions in the design and the machinery. As with other RDT recycling facilities, all plants are tailored to each customers individual requirements.

RDT have a separate line of equipment designed specifically for this industry including:
• Shredders
• Density/ ballistic/size separation screens
• Magnets
• Eddy currents
• X-ray screens
• Optical separation
• Water baths
• Heavy duty conveyors
• Walking floors
• Trommels and much more.

Typical separation involves a range of end products including:
• Cardboard
• Aggregates
• Plastics
• Metals
• Various woods

Equipment

Having a full engineering design team, RDT can design and supply purpose built machinery to suit your specific needs.

We have extensive knowledge of recycling facilities and the latest sorting technologies, which we use to provide quality solutions that are cost effective,
energy efficient and suitable for the job. RDT has a close relationship with some of the best suppliers of state of the art sorting equipment in
the world. Through these close relationships, we are able to develop and utilise a collective knowledge base to provide integrated equipment based on the
customers product and throughput requirements.

RDT can supply the following equipment, either individually or as part of a complete new facility or existing plant upgrade:

Conveyors
Bounce Conveyors
Trommels
Product Storage Cages & Silos
Maintenance & Access Platforms
Paper Disc Screens
Glass Screens
Optical Sorting Technology
Perforator Flatteners & Densifiers
Palletising Conveyor Systems
Container Loading Systems

Conveyors

RDT design and supply trough and flat deck conveyors in a range of widths from 400mm to 2000mm wide. With the use of conveyor calculation software and our vast experience in conveyor design RDT ensures that the drives and bearings are sized according to the required duty.

RDT conveyors come complete with the following features:

Two piece or solid welded head and tail drums.
Lagged head drums for drive traction (Tail drums can be lagged for reversing conveyors.)
Tail drum belt tensioning device.
Hungry boards with skirting system.
Adjustable return rollers.
Head bearing adjustment for drum alignment.
Gearmotor on left or right hand side.
Guarding of nip points to Australian & European Standards.
Unique shaft protection guards for head drums.

RDT Can also supply the following optional extras:

Belt scrappers and ‘V’ ploughs.
Bearing grease lines.
Belt tracking devices.
Transition chutes.
Flat, Bullhorn and rough top conveyor belts with clipped or vulcanised joins.
Low speed sensors for belt tear monitoring

RDT can also provide Truck Unloading Conveyors which are a great way to store and feed incoming product into a recycling facility without the use of mobile plant. They allow trucks to be unloaded quickly and for the product to be stored in a neat and tidy manner.

Bounce Conveyors

RDT Bounce conveyors are an effective way to separate paper from containers and to increase separation efficiency within a MRF. Bounce conveyors are supplied 1800mm wide by 6000mm long but can be increased in size to accommodate higher product throughput. The pitch of the conveyor is 30 degrees and can be altered to suite different material compositions.

RDT conveyors come complete with the following features:

Two piece or solid welded head and tail drums.
Durable chain driven beater shafts
Lagged head drums for drive traction
Tail drum belt tensioning device.
High hungry boards with skirting system.
Adjustable return rollers.
Head bearing adjustment for drum alignment.
3 to 4 Gearmotors on left or right hand side.
Guarding of nip points to Australian & European Standards.
Unique shaft protection guards for head drums.
Adjustable pitch support frame.

Trommels

RDT’s Trommels have been designed specifically for the waste and recycling industry. Trommels are an efficient and cost effective method to size separate material. They form an integral part of MRFs and waste processing.

Key Features of our trommels include:

Fully Enclosed covers around the entire trommel barrel to reduce noise, dust and spillage
Heavy duty, solid rubber dual wheels for extra stability
Variable speed motor drive
Cone shaped inlet and internal product ring to eliminate spillage
Structural supports and bracing

TROMMEL SIZES

RDT can offer various sizes of trommels to suit every application. RDT can also supply several screen sizes in the one trommel to provide several screening processes.

Trommels can be manufactured to suit your individual needs. The width can be made from 1200mm diameter up to 3.4m diameter. The length of the trommel can be manufactured from 2.4m up to a length of 15m.

Product Storage Cages

RDT can provide storage cages and bunkers with baler feeding systems for OCC, paper, plastic and metal containers. The cages can either be conveyor bottom or gravity fed discharge and come complete with automatic slide gates for easy discharge.

Cages can be sized specifically to suite the customers storage requirements and can be designed to be integrated into existing recycling facilities.

Glass Storage Silos

RDT’s Glass Storage Silos solve the problems associated with storing glass.

The benefits of using glass storage silos over conventional bunkers are:

Fully enclosed structures which provide a
- Reduction in noise associated with breaking glass
- Reduction / Elimination of wind blown litter
A front end loader is not required.
The silos are aesthetically designed and built.

Key Features of the silos include:

Hydraulically operate slide gate for quick and easy discharge
Access platform and ladder for general maintenance
Level indicators for accurate storage capacity
Up to 50 tonne per hour discharge which allows for the loading of a semi tipper in 20 minutes
Strong Steel construction
The silos and associated unloading system comes complete with all safety guarding to meet Australian Standards.

Maintenance & Access Platforms

RDT can design and supply any platforms and stairways you may require to make your plant more accessible and easier to maintain. Our sorting platforms are ergonomically designed to ensure that the plant operators work in a comfortable environment. We can also provide enclosed sort cabins complete with air conditioning, lighting and viewing windows.

Our platforms and stairs are designed to conform with all relevant Australian Standards and also comply with the Egress and Access Provisions of the BCA.

Key Features of our platforms and stairs include:

Anti-slip nosing’s on all stair treads
Galvanised finish to all platforms and stairways
Painted or galvanised handrails to comply with Australian Standards
Checker plate flooring and toe boards to all stairs and platforms
Structural Engineering Certificates

Paper Disc Screens

RDT can supply disc screens to separate OCC (Old Corrugated Cardboard) from commingled product, ONP (Old News Print) from containers and Mixed paper from containers and fines less than 50mm. The screens utilize rubber discs of different diameters and spacing’s to maximize separation efficiency.

OCC SCREENS

OCC screens are usually positioned at the beginning of a recycling plant to remove large cardboard and objects greater than A3 size from the process. The screen uses large rotating discs to effectively transport the OCC over the top of the screen while the smaller paper and containers fall through.

ONP SCREENS

The ONP screens separate paper larger than A4 size from containers and small bits of paper. The screening deck can be adjusted between 45 & 38 degrees and uses rotating rubber stars to carry the paper over the top while the other objects fall through the screen.

When the discs begin to wear, the screen angle and the rotating speed of the stars can be adjusted to maintain an efficient material separation and helps to increase the life of the stars. Rubber stars can be replaced easily due to the quick removal of the star shafts using a unique shaft coupling system.

MIXED PAPER SCREENS

The Mixed paper screen works on the same principal as the ONP screen, but utilises a smaller spacing between the stars to create a three way product split. Paper is carried over the top of the screen, while containers roll off the bottom and product smaller than 50mm falls through. The screen comes with an air assist system which helps to increase the separation efficiency of the screen.

Mixed paper and ONP screens can be supplied as double deck screens for increased processing capacity.

Disc screens provide the following benefits to recycling systems:

High processing capacity of recyclables.
Small machine footprint to processing capacity
Easily replaceable shafts and stars
Low noise level
98% sorting efficiency with less than 2% contamination of paper stream

Glass Screens

Recycling Design & Technologies (RDT) can provide Glass screening systems to separate glass according to size and weight. The following equipment can be supplied to process glass to your requirements:

Glass Breaker Screens
Glass Fines Disc Screens
Light Fraction Separators
Vibratory Feeder Screens

BENEFITS OF INCORPORATING GLASS SCREENING

Effective when used prior to Glass Optical Sorting units to reduce the contamination of input material resulting in increased quality of output material.
Cleaner product stream following the glass screens reduces wear and operating cost of plant equipment.
Glass Screens automate the glass separation process and reduce or eliminate the need for manual sorting. This reduces the risk of workplace injury and allows better utilisation of staff.

COMMON FEATURES OF GLASS SCREENS

Intelligent design allowing quick removal of replaceable wear parts reduces maintenance cost and associated down time.
All wear parts designed to prolong life and reduce frequency of replacement.

GLASS BREAKER SCREEN FEATURES

Separates glass from comingled product stream by breaking and screening process.
Hardened steel breaking disks prolong life of these wear parts.

GLASS FINES DISC SCREEN FEATURES

Separates glass fines from comingled stream without breaking whole glass bottles. This allows glass bottles to be sorted manually.

LIGHT FRACTION SEPARATOR FEATURES

Removes organic and light material (small paper) from the glass fines stream.

VIBRATORY FEEDER SCREEN FEATURES

Size separates glass from a glass only stream.
Customisable screen sizing allows for optimisation of fines material separation.
Multiple sizing grades can be separated using a single Vibratory Feeder Screen.

Optical Sorting Technology

RDT can provide optical sorting solutions for a range of sorting tasks.We have vast experience in the use of optical sorting and have successfully implemented these technologies into MRF designs around the world from 5tph commingled to 18tph container processing facilities.

Optical sort units can be used to sort glass, paper including cardboard and organic material, all types of plastics and metals from recovered waste streams.

They have a high throughput capacity and can recover around 95% of processed material with a purity of up to 98%. The units can also be programmed to perform different sorting tasks providing you with flexibility within your MRF.

Perforator Flatteners

Our Perforator Flatteners are designed for use in Material Recovery Facilities (MRFs) optical container sort lines and for product destruction of full or empty beverage containers.

Perforator Flattener Benefits

Removes fluids trapped in beverage containers, minimising spillage on other conveyors and equipment throughout plant.
Improves accuracy of optical sorting equipment. Flattened containers are less susceptible to unpredictable movement on conveyor belt which reduces the accuracy of optical sorting.
Increased storage capacity of un-baled commodities.
Increased Bale density allowing larger quantities of material (by weight) to be transported.
Increased life and reliability of baler. Perforated containers require less force to compact resulting in less wear on the baler.

Perforator Flattener Features

Perforates and flattens plastic and aluminium containers.
Customised liquid capture system incorporated.
Overload Protection Mechanism for large and bulky items reduces wear on the machine.
Perforating shafts designed with high strength steel.
Low maintenance design with time saving maintenance features.

Densifiers

Densifiers are well suited to shredding plastics prior to bailing to increase bale densities. RDT Densifiers are small and cost effective which makes them suitable for use in regional Material Recovery Facilities or small scale plastics bailing operations.

Recycling Design & Technologies can supply Densifiers as a stand alone unit or as part of an integrated system including feed conveyor(s) and baler.

Densifier Benefits

Cost effective means of increasing bale densities, allowing larger quantities of material (by weight) to be transported.
Increased life and reliability of baler. Perforated containers require less force to compact resulting in less wear on the baler.
Increased storage capacity of un-baled plastics.

Densifier Features

Low cost replaceable cutting teeth.
Compact design allows installation above new or existing balers and product storage cages.
Spring loaded drum design to allow foreign objects to pass through without damaging the machine.

Palletising Conveyor Systems

Recycling Design & Technologies (RDT) design and supply palletising conveyor systems to any specification you require. Our Palletising conveyor system is well suited to packaging environments requiring large and/or heavy bags to be flattened for stacking onto pallets.

Palletising Conveyor System Benefits

Significantly reduced manual handling and the risk of workplace injury.
Increased palletizing/packaging throughput with a minimum of staff.
Uniformly flattened bags produce a more stable stacked pallet.

Palletising Conveyor System Features

Compaction adjustment is made with the push of a button. Linear actuators provide quick and easy adjustment.
RDT can customise each palletising conveyor system to accommodate any compaction requirements. (E.g.; Compaction percentage, material type/compaction force required).
A roller conveyor at the out feed the system allows transportation of flattened bags to pallet stacking area to minimise manual handling.

An optional pallet lifter can be supplied by RDT. The pallet lifter varies the height of the pallet to ensure the top layer is at an ideal height for stacking. This reduces the need to bend or reach with heavy loads.

RDT provides a wide range of design solutions for recycling, materials handling, and packaging industries. Our Palletizing Conveyor System is just one example of our diverse services.

Recycling Design & Technologies customised design solution for the Endeavour Foundation

The palletizing conveyor system was produced for the Endeavour Foundation – a not for profit company which provides employment for individuals with physical and intellectual disabilities.

RDT was asked to provide a solution to the physically demanding work required to flatten and lift large bags for palletizing.

Container Loading Systems

Recycling Design & Technologies (RDT) have designed and manufactured a number of shipping container loading systems. These systems are ideal for industries which require the rapid and efficient filling of shipping containers with loose material such as shredded steel, paper, or wood chip for example.

RDT design and supply shipping container loading systems to accommodate any specifications you require. This may include; pre screening of product, varying container sizes, type of material being loaded, site requirements, feed rate and feed location.

Shipping Container Loading System Benefits

Diverter chute allows switching between containers. This permits continuous loading as a full shipping container may be replaced as another is loaded.
Filling of containers in vertical position maximises utilisation of the volume within a shipping container.

Shipping Container Loading System Features

Fast acting diverter chute with option to be controlled by hydraulics or pneumatics.
Heavy duty customised conveyor and conveyor belt suitable for indoor or outdoor use. For more information please view our conveyors page.
Customised conveyor support structure to suit your access and material feed requirements.
All RDT machinery is designed to conform to relevant Australian and international standards.