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Sustainability

Sustainability

Driving the “Green Steel” cycle

In 2021 the European Union presented the "Fit for 55" climate package. It is intended to achieve the objective laid down in the European Climate Law of reducing greenhouse gas emissions in the EU by at least 55% by 2030 in comparison to 1990 levels, and to make Europe climate-neutral by 2050.

Increasing numbers of steel companies are banishing blast furnaces and replacing them with electric arc furnaces. Instead of coke and iron ore, scrap metal is melted down. Compared with the use of a blast furnace, steel production from scrap produces around 80% less greenhouse gases. The conversion to so-called "electric steel" is one of many new paths the industry is taking.

  • 400 bar Hydraulic Technology

    • Numerous LINDEMANN machines are equipped with a hydraulic drive system with up to 400 bar pressure, which is still in a class of its own. The complete system, including the components, is designed to achieve maximum performance with the lowest possible energy requirements.
  • Green Steel Cycle

    • When looking at the large shredder plants from LINDEMANN, it also quickly becomes clear that the company has long since assumed a leading role in terms of environmental protection. From the material preparation of the scrap, separation of the fractions, and the proven reduction of emissions right up to results analyses for determining the purity level of the processed material: LINDEMANN is committed to the whole green steel cycle.
  • CO2 REDUCTION SCRAP

    • All LINDEMANN machines are equipped with the quality and technology relevant to steel processing in compliance with the green steel cycle. Here, amongst others, LINDEMANN enters into targeted strategic partnerships with companies that upgrade our machines with useful and valuable technologies, enabling us to optimally contribute to the green steel cycle. 
  • economically and ecologically efficient

    • Preservation, enhancement, and increased efficiency of our existing machinery base, with upgrades to electrical and hydraulic controls and drives
    • Reduction of pollutant emissions by 20 to 50%
  • Variable Frequency Drive (VFD)

    • Load peaks are reduced to a few small peaks via intelligent and fast motor current control, depending on the infeed of material to the rotor
    • Uniform power grid utilization
    • Up to 10% lower specific energy costs per metric ton of production
  • Shredder Drive Assistant (SDA)

    • Production increase of up to 20%
    • Homogenized material input
    • Significantly lower load peaks
    • 80% lower peak amplitudes
    • Operator support and relief (worker health and safety)

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Solutions

Sustainable Solutions for the Metal Recycling Industry

Digitization and Sustainability

Digitalization and sustainability are gradually picking up speed in our sector and, for us, both have strategic priority. We are transforming ourselves from an engineering company to a full service- and solution provider for our customers, investing even more in new and more efficient technologies, and increasingly devoting ourselves to environmental issues such as the reduction of emission values through the latest dedusting systems – 360° along the metal recycling value chain.

All LINDEMANN machines are equipped with quality and technology relevant to steel processing and compliant with the green steel cycle. With a look at the large shredder systems from LINDEMANN, it also quickly becomes clear that the company has long since assumed a leading role in terms of environmental protection. From material preparation of scrap, separation of fractions, and proven reduction of emissions to results analysis which evaluates the purity level of the processed material:

400 bar hydraulic technology

Efficient and powerful drive power

LINDEMANN hydraulic drive technology is still unique in the market. This is no wonder, because the system benefits from more than 110 years of expertise. The complete system, including the components, is designed to achieve maximum performance with the lowest possible energy requirements. In other words, the energy required for the hydraulics is converted into production output with maximum efficiency instead of being unnecessarily dissipated as heat.

Dr. Krischan Wolters
LINDEMANN Product Manager responsible for the shear portfolio states:

"You can compare it figuratively to a small electric-powered car that has the performance of a 400-horsepower gasoline engine but is much more compact, lighter, more energy efficient, and cost-effective."

LINDEMANN NxtCut

The latest coup from LINDEMANN is the NxtCut – LINDEMANN's new generation of hydraulic scrap shears with side compression bed (bed length 6.2 - 8 m). The machine is specially designed for processing various light to medium-heavy scrap materials of medium volumes. Small, fast, strong, and flexible, with original LINDEMANN quality engineered in Germany, equipped with an energy-efficient and sustainable 400 bar hydraulic power unit, up to 1,000 t shearing force, and improved maintainability.

LINDEMANN NxtCut

VFD –
Variable Frequency Drive

New Medium Voltage Concept

The shredder rotor must cope with constantly changing performance demands due to discontinuous material feeding of the machine. If the shredder rotor is loaded with process material, the rotor speed decreases briefly. The motor then tries to accelerate the large inert mass of the rotor back to nominal speed as quickly as possible. This constant change between acceleration and deceleration of the shredder rotor places high demands on thermal management and speed control of the motor. The efficiency of shredder operation is thus largely determined by the quality of motor load monitoring and speed control. The aim is to return to nominal motor speed as quickly as possible.
Our solution: A robust and high-performance medium voltage variable frequency drive (VFD) that makes the shredder drive highly consistent.

Advantages compared to conventional drive systems:


  • Fast and accurate motor control over a wide speed range. Active deceleration and regenerative braking as possible options.
  • Energy efficient system with lower electrical energy losses (energy wasted as heat in conventional drive systems).
  • No gearbox and no hydrodynamic coupling required, thus effectively reducing the number of components that need periodic maintenance or can fail and cause production stops.
  • Intelligent material feeding due to interaction of the Shredder Drive Assistant (SDA) and the VFD, resulting in optimal motor utilization, damping of load peaks, and leveling of production, saving of energy, increased productivity, and potentially reduced wear of mechanical components.

Advantages compared to low voltage drive concepts:


  • Excellent performance in terms of network disturbances (voltage sags, flicker, harmonic emissions etc.) as caused by load peaks. The plant can be operated on full capacity even while connected to a relatively weak electrical network, and potential penalty costs for excess energy drain and network disturbances are greatly reduced.
  • High reliability, robustness, and efficiency of the VFD.
  • High input power factor with very low input harmonic distortion.
  • High starting torque without inrush currents and starting current peaks.
  • Lower motor and drive electrical energy losses during operation.
  • Low VFD maintenance requirements.

SDA –
Shredder Drive Assistant

Maximize your productivity, performance and profitability

The Shredder Drive Assistant (SDA) ensures that the shredder is fed with material in such a way that it operates at optimal capacity without exceeding the breakdown torque, and that the shredder driver’s workload is reduced through efficient support. These measures enable a constantly high throughput rate in t/h while at the same time minimizing the number of standstills. In addition, the SDA enhances the shredder’s production output by increasing the limits of the driving pulley stop (material feed stop) within a reasonable range. The main motor current and the temperature values of the drive train components are captured and evaluated. The higher the shredder loading, the higher the main motor temperatures. The lower the loading, the lower the temperatures.

YOUR BENEFITS
  • Higher Outcomes:

    • Constant throughput at a high level
    • Reduction of expensive current peaks
  • Supports the Shredder Operator:

    • Technological optimization monitors and controls operating parameters
    • Operator role shifts to a supervisory function, monitoring and interacting with critical material feeds
  • Efficiency:

    • Permanently filled shredder chamber
    • Lower cost per ton due to reduced wear.
InDEx – SYSTEM

Operating and production data acquisition system

InDEx – INTELLIGENT DATA EXTRUCTION

Data evaluation with one click

All machine data can be visualized and analyzed in the InDEx web portal and app. The data can be transferred to programs and systems designed for controlling purposes, if required. Directly to the end device.

Perfect basis for evaluating the various key performance indicators (KPIs). InDEx enables the workflow and performance of one or several machines to be optimally monitored and evaluated. Free from unpleasant, expensive, or unproductive surprises. Whether on a business trip, via mobile app, or from the dashboard: One click is all it takes to immediately determine how high the current capacity utilization is, which material is currently being processed, how many operating hours the system has been running and the general condition of the machine.

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Advantages

LINDEMANN advantages –

A decisive WIN for you

Working with LINDEMANN Metal Recycling makes your business successful.

PREMIUM METAL RECYCLING MACHINES AND PLANTS


  • Top Engineering Quality “made in Germany” keeps your metal recycling machine durable and more resistant.
  • Unique 400 bar Hydraulic Systems for higher performance and efficiency: Many LINDEMANN machines are equipped with a hydraulic drive system with pressures of up to 400 bar, which is still in a class of its own. The complete system, including the components, is designed to achieve maximum performance with the lowest possible energy requirements.
  • Outstanding performance: With LINDEMANN you can expect maximum output per installed drive power, no wastage of power reserves, and low operational expenditures (OpEx) thanks to minimized downtimes as a result of intelligent maintenance approaches.

RELIABLE CUSTOMER SERVICE ONSITE AND 24/7 REMOTE 


  • Competent and concentrated advice from query to offer, also beyond the product: Full-service support at your location for all your machine and plant requirements.
  • Professional inspection, repair, and optimizing  of your machine. Directly at the customer site or remotely via telephone, online by means of PLC telediagnosis or digitally via Smart Glass technology.
  • Optimized cost management: No additional travel costs and travel times, up to 20% discount possible on your individual service package, and billing by the minute

ORIGINAL EQUIPMENT MANUFACTURER FOR SPARE AND WEAR PARTS


  • Original only: We have been developing and testing original LINDEMANN recycling spare and wear parts since 1913.
  • Quality made in Germany: The durability, efficiency, reliability, and costs of our parts are considered as early as the product development phase, influencing both choice of materials and manufacturing processes.
  • More than 300.000 parts on stock: Our worldwide inventory of over 300,000 parts, including most wear parts as well as critical spare parts, allows us to service both current and former machine generations.

INNOVATIVE AND SUSTAINABLE SOLUTIONS FOR THE METAL RECYCLING INDUSTRY


  • InDex: Web portal with app for data analysis. All data from your machine can be visualized and analyzed in the InDEx web portal and the app. The data can be transferred to programs and systems designed for controlling purposes, if required. This ensures improved performance, maintenance optimization, higher productivity, and transparent controlling.
  • SDA Concept: Maximize your productivity, performance, and profitability with the Shredder Drive Assistant (SDA). Constant throughput at high levels and reduction of costly current peaks (check) VFD (variable frequency drive) concept: Shredder drive consisting of a robust and high-quality medium voltage squirrel cage motor (6 or 6.6 kV) fed by a medium voltage VFD, energy-efficient system with lower electrical energy losses (energy wasted as heat in conventional drive systems).
  • VFD (variable frequency drive) Concept: Shredder drive consisting of a robust and high-quality medium-voltage squirrel-cage motor (6 or 6.6 kV) fed by a medium-voltage VFD, Energy-efficient system with lower electrical energy losses (energy wasted as heat in conventional drive systems)

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History

110 YEARS OF LINDEMANN – 100 YEARS METAL RECYCLING SOLUTIONS

History

Waldemar Lindemann founded his own trading company of the same name in Düsseldorf on October 1st, 1913, at the age of 27. The idea struck him during a traineeship at an Antwerp export house, where he was responsible for logistics. He noticed that the more bulky and voluminous the goods, such as cotton, sisal or hemp, were, the more expensive it was to transport them. Waldemar conducted a market analysis and discovered that there were hardly any machines that could compact these goods and reduce their volume in a way that was economically attractive. He seized this opportunity and launched his own business designing and producing baling presses. His father Robert, who was already a renowned hydraulic engineer at the end of the 18th century, was a great help to him in this venture.

  • How the LINDEMANN story began

    1913

    The founding years

    Waldemar's father Robert Lindemann was granted permission to build a mechanical workshop as far back as 1893. The apple did not fall far from the tree: For his Lindemann company, Waldemar worked together with his father to develop various baling presses for paper and cardboard, both mechanically and electrically driven, from 1913 onwards. In 1919, Waldemar began the development and construction of baling presses independently of his father.

  • Industrialization demands metal recycling

    1920

    The world’s first metal recycling machine entered the market

    Waldemar tried to gain a foothold in the scrap processing industry a few years later. His father's hydraulics expertise was invaluable in this respect. This expertise was successfully put to use when the world's first hydraulically operated scrap press was developed. Lindemann delivered it to a customer in England in 1923, five years following the death of Robert Lindemann. It helped the company make its international breakthrough. With the rise of industrialization, the volume of scrap metal that needed to be packaged for transport to the smelting furnace also increased. This was followed by the first mobile scrap press in 1926 and the first end press. Lindemann began building its first large machines at the end of 1928. The "Asper" hydraulic scrap press already measured six meters at the time.

  • Leading the Metal Recycling Industry

    1930

    LINDEMANN represented on each Scrap Yard Europe-wide

    LINDEMANN machines could be found in all the scrap yards of Europe in the 1930s.

    Among other things, Lindemann built and supplied "chip mills" as well as various sized scrap baling presses - for scrap yards as well as for steel mills or small, metal processing companies. These were used, for example, for briquetting sheet metal strips and metal chips. Furthermore, the first scrap shears came into the market. Alligator shears, as they were called, constituted the first model of shears, of which 1,200 were sold worldwide over the next 30 years. 1931 saw Lindemann move production from Osnabrück to Düsseldorf to the premises of Oeking AG, on Erkrather Strasse.

  • After the Second World War

    1940

    Old drawings made a new start possible

    The time shortly before and particularly during World War II was traumatic, as it had been for many manufacturing companies in Germany. The company in the form that Waldemar founded it no longer existed. The LINDEMANN factory found itself being misused for the production of munitions. It was closed by the Allies at the beginning of 1946. It was initially supposed to be dismantled, a decision that was abandoned. Instead, all construction drawings were confiscated. Thankfully, Waldemar's brother Kurt Lindemann's company in Cologne still had drawings that made a new start possible. They founded the Gesellschaft zur Konstruktion Bau Hydraulischer Pressenanlage Lindemann mbH between 1947 and 1948, which was renamed Lindemann Pressenbau GmbH Köln in 1949.

  • LINDEMANN expand to the USA

    1950

    Pioneering cooperation with Lake Erie

    Operations finally returned to Düsseldorf in 1952. Waldemar once again changed the company's name, to Lindemann Maschinenfabrik GmbH Düsseldorf and, together with his daughter Ingelore, cranked up the business in earnest. The demand for large scrap baling presses increased tremendously after World War II. Waldemar founded Lindemann KG seven years later, starting in 1959 as a pure sales company, paving the way for international trade, including in the USA. Their pioneering cooperation with Lake Erie, a hydraulics company based in Buffalo, was a milestone at the time. Meanwhile, the great era of scrap shears was taking off at the end of the 1950s. In 1958, the world's first hydraulically operated scrap shear, with a shear force of 1,200 t, was delivered to Luria Brothers, the largest scrap company in the USA at the time. Many other special shears followed.

  • The great age of scrap shears

    1960

    LINDEMANN presence in more than 50 countries worldwide

    The scrap shear business was flourishing in the 1960s. During the same period, LINDEMANN was working on the first shredder tests for crushing metal scrap, at first with a hammer mill, then later with a newly designed automotive shredder. The success was clear to see: Scrap metal processors practically snatched the first automotive shredders out of LINDEMANN's hands. Waldemar Lindemann passed away in 1964 and his daughter Ingelore became the sole owner. As of this date, the operational business was managed by a management team that included Ingelore's husband, General Consul Schoeme. LINDEMANN purchased the Düsseldorf-based company Hartung Kuhn & Co in 1965, boosting the company's own production capacity in the process. The company continued to grow steadily. LINDEMANN already employed 1,000 people by the mid-1960s and had a presence in more than 50 countries worldwide. England's first large-scale shredder lines were installed by LINDEMANN in 1967.

  • LINDEMANN production for Deutsche Bahn

    1970

    Demand for pressing metal scrap increased

    The scrap presses grew larger and more powerful - the largest hydraulic press of the time was already powered at 750 hp. The demand for pressing new sheet metal scrap increased, especially in automotive factories. LINDEMANN further developed the wheel mounting and dismounting presses for Deutsche Bahn and DÜWAG in Düsseldorf. The shredder business boomed during the same period.

  • Shredder business grows

    1980

    LINDEMANN extended to further countries

    The license agreement with Newell expired in the 1980s, and from that point on LINDEMANN marketed its shredders without a license, continuously developing them, and significantly expanding its international business. Besides the USA, LINDEMANN established additional sites in Switzerland, England, Spain, Brazil, France, and Japan.

  • LINDEMANN was sold to Svedala Industries

    1990

    New opportunities opened up in the USA

    LINDEMANN was sold for the first time to Svedala Industries AB from Sweden in 1997. The company name was changed to Svedala Lindemann GmbH. This gave the company financial reinforcement and helped it to secure and further expand its market position. New opportunities opened up in the USA during the same period: Svedala Universal Engineering from Cedar Rapids, which manufactured the Hammersmill shredders, was already part of the Svedala Group, something that was an advantage for the future shredder business. Svedala also contributed valuable expertise in wear casting technology thanks to the construpction of mineral processing machines.

  • From Metso back to LINDEMANN

    2000

    21st century is LINDEMANNs most successful business period

    Just four years after Svedala Industries bought Lindemann, Svedala itself, including Svedala Lindemann GmbH, was taken over by Metso in 2001 and continued as Metso Lindemann GmbH. Metso initially consolidated Svedala's and Metso's existing metal and recyclables processing segments into Metso Minerals. The business was later spun off into a newly formed division as Metso Recycling. Metso added San Antonio-based Texas Shredder to its portfolio in 2005, thereby expanding its shredding expertise. There was an enormous demand for scrap processing facilities especially between the years 2004 to 2010. It was the most successful business period in the "Lindemann history" so far, next to the formative and strong 1960s. The pre-shredder was launched in 2013 and installed for the first time in France as a shredding element upstream of the shredding process to reduce deflagrations and wear in the expensive main shredder. Today's further enhanced EtaRip is regarded as the most sought-after pre-shredder in the market. The portfolio was expanded to include the N-series in 2016 - for processing smaller and medium scrap volumes. The first delivery was made to the USA in 2017. LINDEMANN returned to being LINDEMANN in 2022. Backed by the investor Mimir, the core values of the founder Waldemar Lindemann “Quality, Performance, and Innovation” will once again be brought into sharper focus and further developed. In doing so, the company is concentrating on relevant topics such as digitalization and sustainability, optimizing internal structures and work processes, and investing in new personnel. The growth curve continues to rise more steeply than expected.

  • Happy Birthday

    2023

    LINDEMANN celebrates double anniversary: its establishment and its first steps into the metal recycling industry

    January 12, 2023: LINDEMANN started into its centennial with a stunning Metal Recycling Day, held at its production partner Severt, with special guest Tom Bird, President of BIR. Two hundred invited guests from all over the world as well as international trade media press came to see the flagship machines EtaCut II and EtaPress, joined a factory tour, listened to interesting speeches from Daniela Entzian (BDSV), Philippe Russo (ArcelorMittal), Dr. Walter Hilgert (R&R Beth), Klemens Häusler (Software Management), Karl Hoffmann (STEINERT), Markus Döbbelt (Spaleck), and enjoyed the evening with a gorgeous dinner.

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