CHEMICAL & PHARMA INDUSTRY Silicon conveying with JOEST For the screening and conveying of silicon, JOEST has developed a system consisting of three machine types from the JOEST product portfolio for ALZTEC GmbH. With the help of a JOEST Lifting and Tipping Device from the MA series, a container with material is lifted to a…
This JOEST tipping machine with special design enables a low dust tipping of a 200 litre drum with 7400 mm dumping height.
To perfectly match the customer’s needs, the machine is equipped with a pneumatic system for lowering and docking to the customer’s plant.
In recent years, JOEST Australia has increased its footprint within the Australian battery metals industry. JOEST Australia has delivered a package of 20 new machines comprising 18 different sizes and configurations, from dry scalping and sizing through to wet screening applications, to process the spodumene ore used in the conversion process to yield lithium hydroxide for the expanding battery industry. Due to the project‘s specific requirements, JOEST Australia personnel worked in close collaboration with the customer’s process design team to optimise the feeding and screening equipment used in this latest landmark greenfield project.
Recently, JOEST Australia has successfully supplied and commissioned its largest single package of machines, under contract to a major iron ore supplier. This contract comprised seven double deck multi-slope screens and vibrating feeders. The customer’s iron ore processing facility is purported to be one of the most technically advanced iron ore mines in operation. The collaboration of JOEST Australia personnel with the customer’s Engineering Procurement Contract Managers (EPCM) enabled the condition monitoring for the equipment package to be integrated into the plant process control.
To dose dry ice pellets from their transportation boxes into special isolation containers, JOEST delivered a system solution to the global specialist ASCO Carbon Dioxide this year. Realistic tests at the JOEST Test Center gave insight to the handling of dry ice at extremely low temperatures – at standard pressure -78°C – and the effects it has on the equipment. This data was analyzed by product specialists at JOEST and implemented in the details of the engineering design. The client’s demand was to dose the dry ice pellets with high precision, but without destroying them. A big challenge was the large difference in temperature between the product and the environment. Varying transportation boxes on the feed end, adjustable batch sizes and intermediate storage of the box volume were additional features demanded for the system solution.
For several years, JOEST has been working on the optimization of thermal treatment plants with regard to energy consumption.The optimization of energy consumption is the main focus in thermal treatment. The JOEST Fluidized Bed Dryer is already equipped with an exhaust air heat exchanger to preheat the process air. In specific cases, the drying systems can be designed with exhaust air recirculation. In this case, the exhaust air is partially returned to the drying system after being cleaned by a filter or cyclone. This reduces the energy consumption by more than 40 %. Such measures were previously not available for the JOEST Fluidized Bed Cooler, as the warm exhaust air cannot be recycled in the cooling process itself.
In conventional applications, the Lifting and Tipping Device empties the bulk material in one gush, e.g. into downstream feeders. During the tipping process, blockages or damage to sensitive products can occur, due to the drop height. The latest Lifting and Tipping Devices can be fitted with an integrated dosing feeder. The feeder acts as a load pickup for the container. During the tipping process, the container empties its content slowly onto the feeder. Once the discharge position is reached, the vibratory drive is turned on to gently convey the bulk material into the downstream process. This type of feeding technique can be used for galvanized drums, sand blasting plants, packaging machines and many other applications.
We look back on successful days at the POWTECH trade fair in Nuremberg. Interesting conversations, many new contacts and a good atmosphere. Our #JOESTteam is already looking forward to POWTECH 2023!
In collaboration with the subsidiary JOEST China based in Peking, JOEST designed and manufactured a Vibrating Fluidized Bed Heater and Cooler for thermal processing of highly pure plastic granulate this year. Both machines fulfil different tasks and are located at different stages of the overall process. In the production process from LDPE to XLPE, granules must be heated in one processing step and cooled down in another. The Vibrating Fluidized Bed Heater with 6 m² of surface area is discontinuously operated (batch operation) and is equipped with an energy-efficient Recirculating Air Processing System. The recirculated air is tempered by an electric heater, freed from dust after running through the Fluidized Bed Heater and recirculated in the process. The product is brought to a temperature of 80-85°C at a throughput rate of 4.000 kg per hour in two batches, before being passed on to the next processing step.
After several vigorous meetings with the client from the Netherlands, JOEST was given the order to manufacture a large drying system. Extruded Cereal Products B.V. is a large producer of extruded cereal and protein products for the food- and animal feed industries. The client was looking for a plant to dry wheat-based extrudates which vary in size and shape, composition, moisture and temperature. The existing factory offered very little room for the plant. As a solution, JOEST delivered an extremely compact plant that was based on previous deliveries and optimizations in 2004 and 2014. The system covers four levels of the factory and uses a sophisticated pipeline layout to make the most of the available space. Its main components are a JOEST Fluidized Bed Dryer, a downstream screen, the required processing technology, ventilation equipment and the electronic control featuring a process visualization. The ventilation equipment includes fans, a steam air heater, cyclones, pipelines and an exhaust air heat exchanger.
Last year, JOEST got the order for the third cooling line of the Melos GmbH in Osnabrueck, a manufacturerof EPDM-granulates and cable compounds. The first order of this sequel was placed back in 2016. Melos is a leading manufacturer of plastics for sport- and playground surfaces. They use their know-how to develop custom solutions for various plastic applications including the cable industry and many more. The core of the plant is a JOEST Fluidized Bed Dryer, a Markus Dieckmann, Project Engineer, Melos GmbH GERMANY. Third order in a row for JOEST. Large plant for cooling and screening of EPDM-granulates processing and exhaust air system including pipelines, and a JOEST Feeder. For the demanded cooling of EPDMand EVA-granulates as well as PE-compounds, JOEST designed and manufactured a Fluidized Bed Dryer that is tailored to the application.
JOEST delivered two Lifting and Tipping Devices from the MD series with specially designed load handling attachments to a client in Germany. The machines run on rail tracks so they can easily change between different feeding points. This customized solution that is tailored to the client’s needs, meets highest standards in quality and reliability. The client was searching for a solution to empty 200-liter steel barrels filled toxic bulk material of various grain sizes into a ball mill and a mixer. The main criterion was for the process to run as dust-free as possible. JOEST’s solution was to equip two Lifting and Tipping Devices from the series MD-6 with specially developed load handling attachments. The new design prevents most of the toxic dust from escaping the system. The entire load handling attachment is in a dust-tight enclosure and features a stainless-steel funnel with a pneumatic cover flap.
For the second time, JOEST built a highly pure tube-type feeder for plastic pellets, which are used as base material in the production of electric cables. The challenge in building such a machine is the extremely high demand towards the surface quality and overall cleanness of all of the components. Foreign particles could lead to imperfections in the cables.
Australia JOEST assists in the assembly of a complete drying plant with classification for an Australian agricultural company…
Great teamwork – satisfied customer. Hexion GmbH, one of the world’s leading specialty chemicals companies, ordered a JOEST cooling conveyor to cool duroplastic molding compound…
JOEST supplies a spiral elevator for active carbon with a feed temperature of up to 300° C. In June 2018, JOEST sold an approximately 7 meter high spiral conveyor to a customer in the Netherlands…