Community Research and Development Information Service - CORDIS


Hulleras de Sabero y Anexas, S.A. has tested a new method, evolved from horizontal hollow plants, using a hydraulic transport system to carry coal horizontally for 1500 metres and vertically for 507 metres. Output has been improved and costs reduced over conventional transport methods. The new method allows reductions in auxiliary personnel and increases production at coal face level by faster removal of coal, better adaptation to the irregularities of the coal layer and improved frequency of transport availability. Reserves, however, must be high for the cost of mounting and dismounting the equipment to be profitable. Both horizontal and vertical transport were very satisfactory. A good automatic system, capable of detecting flow variations, made the use of pulp density gauges unnecessary. Possible future improvements to the method include smaller-sized equipment, better sealing, and design changes to give less wear and tear in the tubular feeding system and improved security in the system.

Additional information

Authors: HULLERAS DE SABERO Y ANEXAS, Hulleras de Sabero y anexas, S.A., Sabero, Léon (ES);S.A., Hulleras de Sabero y anexas, S.A., Sabero, Léon (ES)
Bibliographic Reference: EUR 13120 ES (1991) 72 pp., MF, ECU 10
Availability: (2)
Record Number: 199110494 / Last updated on: 1994-12-02
Original language: es
Available languages: es
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