bulk solids handling Journal Technical Article Roll-On/Roll-Off by Krupp Fördertechnik During the past few years, there has been an increasing request by clients for the delivery of fully-assembled and tes ed ship un loaders. read more
bulk solids handling Journal Technical Article The Increased Use of Belt Conveyor Self-Unloading Vessels - A Coming Development in Ocean Bulk Shipping The author underlines the importance of self-unloading vessels for Great Lakes shipping and explains the reasons why and how belt conveyor type self-unloading bulk carriers are being used or planned to be used to an ever increasing extent for bulk movements on ocean routes. A survey of major shippin…read more
Case Study BHS-Sonthofen delivers six twin-shaft Batch Mixers to Pakistan The Chinese-Pakistani consortium CEC-POWERCHINA and the Pakistan Frontier Works Office is building the Diamer-Basha Dam near the Chinese border in northern Pakistan. The construction project will require 18.6 million cubic meters of mainly roller-compacted concrete over the next few years. BHS-Sonth…read more
bulk solids handling Journal Research Paper Segregation of Particulate Solids in a Horizontal Drum Mixer Investigation of the mixing of two sieve fractions of sea sand in a horizontal drum mixer have been carried out. An appearance of the distinct axial segregation has been found and the final equilibrium state did not depend on the initial state of mixture. An absence of the radial segregation has bee…read more
bulk solids handling Journal Case Study Control and Management of Bristol Port Company's New Bulk Handling Terminal Concol Systems Limited, Chesterfield, U.K., are proud to have provided the comprehensive automation and manage ment information system for the new bulk handling facility at Royal Portbury Dock, Bristol, U.K., as subcontractors to the Balfour Beatty/Birtley Joint Venture. read more
bulk solids handling Journal White Paper A New Dust-Free Spout for Barge Loading After a thorough discussion of the causes for dust emission and ways and means to reduce dust emission during he loading of barges, details on a new speed regulating device incorporated in the loading spout are given. In practical operations this new loading device showed excellent results. read more
White Paper Direct Heat or Indirect Heat for Rotary Dryers One of the most important factors in determining the type of rotary dryer that is most appropriate for a certain process is the usage of direct or indirect heat. Rotary dryers are capable of utilizing either direct convection style heat transfer or indirect heat transfer, in which hot sur…read more
bulk solids handling Journal Technical Article Continuous Versus Discontinuous Shipunloading This paper compares the advantages, disadvantages, and status of grab and continuous coal unloading systems for ocean-going ships. read more
bulk solids handling Journal Technical Article Comparison of Stockpile Systems: Bucket Wheel Reclaimer versus Underground Reclaimer The paper highlights some of the aspects in recent developments in the basic design of open and enclosed stockpile systems in the USA. Comparison and evaluation of solutions with different systems, such as silos, slot bins lowering tower, bucket wheel reclaimer, etc. are described Some applicat…read more
bulk solids handling Journal White Paper The Siwertell Bulk Discharger Siwertell of Bjuv, Sweden, have for several years been manufacturing ship dischargers using the principle of transmission of bulk materials by totally enclosed screw conveyors. The paper centres on the assessment of the 350 t/h screw type discharger ordered from Siwertell by the Forth Ports Aut…read more
Case Study Calizamar uses Crushing Technology from BHS-Sonthofen to produce Sand The Dominican building materials manufacturer Calizamar, S.A. relies on crushing technology from BHS-Sonthofen. The company has commissioned the BHS rotor impact mill of type RPM 1513 to produce high-quality crushed sand. With this machine, there are now three crushing plants from BHS-Sonthofen in o…read more
bulk solids handling Journal White Paper Digital Weighing in Bulk Handling A general introduction to weighing in bulk handling is given with particular reference to the various methods of weighing bulk materials during and after loading. Several case studies are outlined. read more
bulk solids handling Journal White Paper Development of Scraper Reclaimers on the North American Continent The author describes the economic background to the choice of scraper reclaimers for reclaiming and homogenizing operations. Recent applications of such machines in the USA are mentioned. It is concluded that the economic advantages of these machines will lead to an increased awareness of this techn…read more
bulk solids handling Journal Case Study The Siwertell Coal Unloader at Kingsnorth The Siwertell ship unloader is a continuous bulk unloader, that has been used extensively to unload cement, grain and feedstocks, and minerals. More recently, it has been used for unloading coal, and two Siwertells have been purchased by the Central Electricity Generating Board (CEGB) in Great Bri…read more
bulk solids handling Journal Case Study Basic Design of the Bucket Wheel Excavator for the Goonyella Mine Overburden stripping at Goonyella Mine has already reached the stage where drag lines alone cannot handle the depth or achieve the production targets required without the aid of additional (pre-stripping) equipment. Currently, a fleet of twelve scrapers is being used for this purpose but long term p…read more
bulk solids handling Journal White Paper Pneumatic Plant for Discharging Ship's Cargo Some special techniques in the field of pneumatic conveying are described and general operational and technological aspects for unloading bulk ships are discussed in detail. Machinery for unloading ships has been known for as long as goods have been conveyed on rivers and canals. One of the mos…read more
bulk solids handling Journal Technical Article Self-Unloaders - Evaluating the Economic Advantages Too often the economic evaluation of self-unloading ships is done by comparing their rates with those of conventional ships. The objective of this article is to show that the economic evaluation of a self-unloader relative to conventional ships requires that all relevant costs be considered, not jus…read more
bulk solids handling Journal Case Study Port Kembla - A State of the Art Coal Port The new Port Kembla coal loader, dedicated on November 22, 1982, was developed to satisfy the following criteria: superior environmental protection, capacity, one hour train tum-around time, environmentally acceptable unloading of 200,000 trucks a year, high reliability, ease of maintenance and clea…read more
bulk solids handling Journal White Paper Climate Adaption: Extreme Weather Events and the Mining Industry The damage caused by recent flooding across eastern Australia highlights the vulnerability of the built environment to extreme weather events. Flooding is part of the natural cycle of climate variability everywhere so the current discussion about whether the recent floods were caused by climate chan…read more
bulk solids handling Journal Technical Article Plant Expansion: Materials Handling U.S. Borax & Chemical Corporation, a member of the RTZ Group is the leading producer of Boric Acid U.S. Borax has its mining operation at Boron, Call- forma, and refining facilities at both Boron and Wilmington, California. read more
bulk solids handling Journal Case Study Recent Developments in Great Lakes Self-Unloading Bulk Carriers Technical data and design features are given for the first full size ocean-going self-unloading bulk carrier, M.V. "Atlantic Superior", built by Collingwood Shipyards and to be commissioned in 1982. This ship will be Canada Steamship Lines' link between the Great Lakes system and worldwide trading, …read more
bulk solids handling Journal White Paper Static Electricity Hazards – Dust Cloud Ignition caused by Static Electricity After emptying a powder from a plastic drum into a metal hopper, a spark occurred when the operator removed the drum, igniting the dust distributed in the air. The following paper presents an explanation about the “why” and “how not” of this accident. read more
bulk solids handling Journal Technical Article Determination of Sample Size for Estimation of the Mean Grade Particular guidelines for the accurate assessment of the requisite sample size for the mean grade of a quantity or volume of mineralized bulk material are presented, and an illustrative numerical example is given. read more
bulk solids handling Journal White Paper Dust Control Techniques in the Canadian Asbestos Mines After a discussion of the varieties of asbestos produced commercially with special reference to the Canadian abestos mining industry, the different grades the classification system, the health risks inherent to asbestos mining and processing, and the elements of environmental control at the workplac…read more