Towards large scale microwave treatment of ores: Part 1 – Basis of design, construction and commissioning

Despite over thirty years of work, microwave pre-treatment processes for beneficiation of ores have not progressed much further than laboratory testing. In this paper we present a scaleable pilot-scale system for the microwave treatment of ores capable of operating at throughputs of up to 150tph. This has been achieved by confining the electric field produced from two 100kW generators operating at 896MHz in a gravity fed vertical flow system using circular choking structures yielding power densities of at least 6x108 W/m3 in the heated mineral phases. Measured S11 scattering parameters for a quartzite ore (-3.69±0.4dB) in the as-built applicator correlated well with the simulation (-3.25dB), thereby validating our design approach. We then show that by fully integrating the applicator with a materials handling system based on the concept of mass flow, we achieve a reliable, continuous process. The system was used to treat a range of porphyry copper ores

E.W. Godwin Secular furniture and interior design

SIGLEAvailable from British Library Document Supply Centre-DSC:DXN020117 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Old farm buildings in a new countryside Redundancy, conservation and conversion in the 1990s

Papers presented to the Historic Farm Buildings Group one day conference, held London (GB), 29 Nov 1990Available from British Library Document Supply Centre- DSC:q92/00838(Old) / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

Discourse studies of scientific popularisation: questioning the boundaries.

This article critiques the `dominant view' of the popularization of science that takes it as a one-way process of simplification, one in which scientific articles are the originals of knowledge that is then debased by translation for a public that is ignorant of such matters, a blank slate. Recent work is surveyed in several disciplines that questions the boundaries of scientific discourse and genres of popularization: who the actors are, how the discourses interact, what modes are involved, and what is communicated. Implications are drawn from these studies for discourse analysis

MERLIN observations of 4C29.6 (3C59) and 4C35.37: Two radio structures misidentified with Seyfert galaxies

SIGLEAvailable from TIB Hannover: RA 234:ET(204) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman