How to move more bulk material

Five years after the delivery of a first bridge scraper for the cement plant at Sobradinho in the State of ­Bahia, Eastern Brazil, Schade Lagertechnik GmbH from Gelsenkirchen/Germany was able to carry out ano­th-er contract by the Brazilian cement producer Ciplan ­Cimento Planalto S/A. Schade delivered a circular column equipped spreader with a flow rate of 1800 t/h (max. 2000 t/h) and a 23 m beam as well as a belt width of 1400 mm. Besides, the scope of delivery included a Schade bridge scraper equipped with a harrow covering the entire area of the stockpile’s profile. The bridge scraper can be operated with a flow rate of 700 t/h.

The structural steelwork was sourced by A­umund Brazil based in Sao Paulo through ­Aumund Asia in Hong Kong and delivered to Brazil. With its in-house quality control Aumund Hong Kong guaranteed the meticulous selection of the parts. The supervision of construction was provided by Aumund Brazil in close cooperation with Schade alignment supervisors.

During planning of the project, Schade built a circular stockyard with two belt conveyor bridges. The second belt bridge transports the material directly to the mill’s pre-hopper on demand. The raw mill was not equipped with a larger storage hopper. Instead a passage straightener permits the passage directly to the mill.

The control mechanism of the reloader was constructed in such a way, that the central outlet hopper will always contain raw material. Below the central outlet hopper a controlled feed belt weighing unit has been installed, transporting the demanded material flow directly to the raw mill.

Initial operation at Sobradinho is planned for fall 2014. The plant produces about 1.6 million tons of cement per year.

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