News items

The new waste sorting plant built by Bezner has a major impact on the energy production, important for the goal of carbon neutral energy production in 2035 Bezner built a recycling installation for the waste to energy plant of Oulun Energia, one of the major energy companies in Finland. The new waste sorting plant has a major impact on the energy production at Oulun Energia, which has a goal to have carbon neutral energy production in 2035. It is a good example of the possibilities of the circular economy. Commercial, construction, demoliation and industrial waste At Oulun Energia the recycling installation sorts different types of waste: commercial and industrial waste, construction and demolition waste. Materials are separated from waste flows and used as follows: * for the energy supply (plastic with the exception of PVC, paper and wood) * some separated materials are sold, such as: Stone, Glass, etc. (inert); Ferrous metal; Steel and iron; Non-Ferrous metal; E.g. copper, aluminum, zinc, brass lead; and PVC Everything is done by the machines, no human work required.

In an official announcement, the Australian graphite producer BassMetals Ltd. recently announced the latest developments of the company to its shareholders. Among them were the convincing results from the RHEWUM technical center. Currently, BassMetals Ltd. uses three screening machines for producing five different (graphite) products. This procedure is very time-consuming and is to be simplified in the future by producing all separating cuts on only one machine. The company commissioned RHEWUM GmbH to deal with this problem and to find a solution. Whether as a pencil lead, solid lubricant, material for self-lubricating bearings and seals, or even as the shaft of a golf racket - graphite has many uses. In nature, the mineral occurs in the form of isolated flakes and grains in carbon-rich metamorphic rock and as veins in pegmatite. The company BassMetals Ltd. owns the Graphmada Large Flake Graphite Mining Complex in eastern Madagascar, in the immediate vicinity of the country’s only export port in Toamasina. From there, the mined and processed graphite is shipped primarily to the USA, Europe and India. The mining area has a unique graphite deposit in soft rock (regolith), which is characterized

Solution for the food & beverage industry UWT supply level limit and continuous measurement sensors for bulk solids and liquids. Different measurement techniques are used depending on the medium and application in question. A distinction is made between continuous level measurement and point level detection. Furthermore, we offer complete systems for level monitoring and visualisation, working together with our customers to set up the installation and commissioning of our products. Customers around the world value us for our tailor-made solutions. Accordingly, we can manufacture complete system solutions to individual customer requirements. Our level sensors are characterised by their reliability, easy handling and long service life.

Precision with Maximum Efficiency The way a twin-shaft shredding unit works is fairly simple: two tools moving in opposite directions draw in the collected waste material for shredding and crush it all together into smaller pieces. If it is purely about volume reduction, for example for easier transport, this can be achieved with conventionally designed shafts. Some applications, however, require specific particle sizes for their processes. Plants that recover energy from waste wood, for example, are usually designed with a standardised particle size in mind. Oversized particles in the material stream can block the conveyors or safety systems such as rotary valves. In addition, too many fines negatively affect combustion and very small particles might lead to lumps jamming the facility. Therefore, if the required size is not obtained in the first shredding step, the material must be treated further. The crux of the matter is that additional processing is costly, reduces the recycler’s profit margins

Continuous level measurement in cooling water with H2 gas. There occur process-related low levels of vibration and steamin the atmosphere. Level sensors that work according to the capacitive measuring principle are used in different liquids, pastes, foams and slurries and can be implemented in all types and shapes of tanks, metallic or non-metallic. They have a very high level of precision in both conductive and non-conductive media. If you look at the whole thing in practice, it becomes clear how versatile the capacitive measuring principle is in very different process conditions. For a steel-producing plant, a continuous level measurement, which works unaffected by steam or pressure fluctuations within a very small measuring range, was implemented with the NivoCapa® NC 8000 in water for gas cooling. The proven technology with active buildup compensation and a tunable oscillator was a flexible solution for optimizing the manufacturing process. Measurement accuracy & corrosion-resistant design including PFA shielding. One of the top 10 steel producers worldwide was looking for an insensitive and

Measurement technology Rotonivo® and NivoBob® combined with data visualisation NivoTec® Modern, high-quality technologies ensure a continuous stress-free manufacturing process in plants. When it comes to detecting fill levels in silos and material processing operations, sensors with a high level of compatibility for different process containers provide the optimum support for a smooth process. Depending on the processing stage, the material to be controlled can be of very different nature and place different demands on the measurement technology to be used. Users from different industries with a number of scattered storage silos consider it increasingly necessary for their plants to be equipped with automated visualisation and monitoring of the data in addition to continuous measurement of the fill levels. Modern solutions for efficient storage processes In order to guarantee a professional solution in terms of precision and process reliability for content measurement during the various stations in the manufacturing process to support a production

Point level detection with RFnivo® and the coating PPT with innovative corrosion protection In power plants, the demands made on the fill level sensors can be very high due to the fact that the sensors come into contact with aggressive media such as sulphur oxides, heavy metals or even acids. Where limit switches are used for dust detection in flue gas cleaning, they need to be robust enough in order to deliver reliable and consistent performance. Often maintenance costs or replacement of these sensors can be very high due to their quality not being adequate to meet the demands and so they achieve only a short operating life. This is particularly evident in measurement tasks in flue gas cleaning within waste incineration plants. Longer service life due to increased corrosion resistance UWT has further developed the RFnivo® 3100 capacitive level limit switch for this type of measurement task in the dust extraction of flue gases so that it meets and withstands the demanding conditions. All process-contacting parts of the sensor have been designed to be completely

In the production of sodium carbonate with fluctuating feed rates and finest separations in the range of 200 µm, many manufacturers rely on the proven screening quality of the RHEWUM WA vibration screening machine to achieve optimum quality of their produ Sodium carbonate has been used by humans for a long time and is considered one of the most versatile chemical products. Its applications include the glass industry, the chemical industry, the pulp and paper industry as well as the detergent and soap industry. The screening task usually consists of screening out the existing dust content from the actual soda product. Recent screening tests with sodium carbonate at the RHEWUM technical center confirm that the type WA screening machine is perfectly suited for finest separations at high capacities. The screen cloth is excited to high-frequency vibrations by means of beater bars directly applied to the screen cloth. Outside of the screen housing rugged electromagnetic drives rock the knocker shafts, conveying the high frequency oscillation directly into the screen mesh. Accelerations of up to 15 g and more are thus achieved on the screen cloth. The power of the electromagnets can be adjusted during operation via an electronic

Silos store large quantities of valuable material, often in the form of bulk goods or other heavy-flowing raw materials. In order to ensure a continuous production process without interruptions, it is necessary to have an exact view of material quantity. Unlike low-viscosity liquids and gases, bulk solids are heavy-flowing materials that make level monitoring difficult, e.g. when bridges form in the material or the material is unevenly distributed in the silo. Some materials also have a fluctuating density, which makes it even more difficult to determine the mass of raw material via fill level. In such cases, weighing the silo is a particularly good way of ensuring accurate fill level control. Here, the silo stands on load cells and thus records the mass of the material regardless of its position and distribution in the silo. Since the weighing is integrated into the structure of the silo, the question is how this can be done safely. The scale becomes part of the structure and therefore also consideration of its static integrity needs to be taken into account. In order to simplify this process, Scaime has developed solutions that make it easier construct and operate silo weighing in all steps of the project.