Germany: HeidelbergCement has decided to modernise its Burglengenfeld cement plant in Germany with parts and services from IKN and Gebr. Pfeiffer.
IKN won the contract for the engineering, supply and installation of a complete 4000t/day pyro line, from raw meal feeding to clinker discharge. Included in the scope of supply are integration engineering, supply and installation of add-on components for the raw meal grinding plant. The upgraded plant will feature state-of-the-art technology to comply with the targeted production level and future emission limits.
The new line will consist of a two-string, five-stage preheater tower with inline calciner. IKN's preheater and calciner design will ensure minimum pressure drop at maximum performance and high efficiency. The kiln line will be optimised to use of a variety of alternative fuels. Among several innovative features will be a tertiary air duct damper, which has proven successful in operation for more than three years with outstanding reliability and performance. Another essential component of the plant is IKN's Pendulum Cooler, which is highly reliable and has low maintenance and operational costs. Its design allows recirculating bypass gas into the recuperation zone to boost cooler efficiency.
As part of the modernisation of the kiln line, the four existing MPS vertical roller mills will be replaced after forty years of successful operation. HeidelbergCement has ordered two new Gebr. Pfeiffer MPS 4250 B roller mills as replacements. Each mill is designed to achieve a capacity of 200t/hr of cement raw material ground to a fineness of 12% R90µm. The drive power per mill is 2250kW. Gebr. Pfeiffer will also supply the complete equipment for the external material circulation system as well as the cyclone collectors and mill fans. The supply of the mechanical equipment will be completed by engineering services covering the plant layout and the integration of the process-related ductwork within the existing, complex plant. Raw mill 1 is scheduled to go on stream at the end of 2016 and raw mill 2 is scheduled to start operations in 2017.