Displaying items by tag: BHSSonthofen

Pakistan: BHS-Sonthofen (Tianjan) has reported the successful delivery of two of a total of six twin-shaft batch mixers to the site of CEC-PowerChina and Pakistan Frontier Works’ upcoming Diamer-Basha dam. The Chinese division of the Germany-based company is supplying four DKX 7.00 7m³/batch precast concrete mixers and two DKX 6.00 6m³/batch precast concrete mixers as part of the project. The mixers will contribute towards the 18.6Mm³ of mainly roller-compacted concrete required for the dam’s construction.

General manager Ronny Laux said “The hydraulically bound base layers required for the dam (also known as roller-compacted concrete) must withstand the heaviest of loads. Our mixers are designed to handle demanding mixing tasks. The twin-shaft batch mixers meet the highest demands for mix homogeneity and reproducibility, even with large quantities – ensuring optimum concrete quality.”

Dominican Republic: Germany-based BHS-Sonthofen has supplied an RPM 1513 rotor impact mill to building materials producer Calizamar. The mill consists of a vertical shaft and will produce crushed sand of a consistent fineness and cubic particle shape. Calizamar produces and sells aggregates, natural stone, pre-cast concrete and paper bags.

Sweden: Germany-based BHS-Sonthofen has announced its supply of a twin-shaft DKXS 4.0 batch mixer for Tecwill as part of the 1100-turbine Markbygden Wind Farm in Norrbotten County. The mixer produces 4m³ of fibre concrete per batch and allows for casting up to three windmill bases per day. Tecwill has supplied a mobile concrete batching plant to the project consisting of five aggregate bins, four cement silos, a fibre dosing module and turbo-heating container including a buffer tank for cold water.

Germany/Portugal: Talleres Alquezar has been using two BHS mixers in a modular plant to produce a total volume of 400,000m³ of hydro dam concrete in Portugal since 2017. Two DKX 4.5 type twin-shaft batch mixers, each with a capacity of 4.5m³, have been integrated into the plant. Germany’s BHS says that using twin-shaft batch mixers has shown that can be utilised successfully to produce this kind of specialised concrete.

Three hydro dams are being built on the Tâmega River that are expected to generate 1760GWh for the Iberian market once they have been commissioned as part of Spanish energy group Iberdrola’s large-scale hydroelectric project in Portugal. 242,000m³ of concrete is needed in Daivões for the dam wall alone, which is planned to be 78m high and 265m long. Spain’s Talleres Alquezar is the project partner for this hydro dam. Once built, the construction in Daivões is expected to dam up to 56,200,000m³ of water.

Germany: BHS-Sonthofen and MSW Mineralstoffwerke Südwest have been awarded the German Resources Efficiency Award 2016 for their Combimix process. The German Federal Minister for Economic Affairs and Energy awarded the prize to the two companies in mid-February 2017. The process uses lime to improve raw materials yields in quarries contaminated with clay.

BHS developed the Combimix process based on their twin-shaft batch mixers and implemented it together with MSW. It uses lime to mix with clay that then undergoes a chemical reaction and this allows it to be separated from the rock in a subsequent processing step. The process allows more materials, such as limestone, to be extracted from quarries and extends the usable lifespans of such sites. In addition, previously dumped materials considered unprofitable can now be reassessed.

MSW introduced the process at its Mönsheim quarry in the summer of 2016. It allowed the company to increase its repository’s yield by 25%. To produce the same volume of the final product, it was previously necessary to extract about 620,000t/yr of limestone. At present the total is around 188,000t less, which corresponds to a relative reduction of around 30%. It helped to increase raw material efficiency from the previous level of 65 – 70% to around 93%.

“Our Combimix process holds a vast potential as it enables companies across the globe and throughout various industries to utilise resources more efficiently. In the context of rehabilitating contaminated soil, Combimix can be used to remove oil and other harmful substances. As a result, only a small fraction of the feed material needs to be dumped in hazardous waste landfills. The process is also viable for the cement industry. Here, it can be applied to processing limestone, a key ingredient that improves the burning process in rotary kilns and thus contributes to reducing fuel consumption,” said Dennis Kemmann, the managing director of BHS-Sonthofen.