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
Case Study North Incinerator Finds Solution to Excessive Sweep Elbow Wear At Montgomery County's North Incinerator plant, there was a problem several years ago. The Dayton, OH, area trash-to-energy plant was experiencing repeated shutdowns due to sweep elbow failure in its dense phase pneumatic conveying system, a component of the lime injection system in operation there.…read more
bulk solids handling Journal Technical Article Evaluation of Basic Slurry Properties as Design Criteria for the Marconaflo System In developing a means of slurry handling iron ore pellet feed to and from ocean vessels, Marconaflo found it necessary to establish a slurry laboratory to develop the technology and hardware. This paper is a review of the principles involved in such developments and the importance of testing the pri…read more
bulk solids handling Journal Technical Article The Filling, Closing and Handling of Sacks Following a reference to the types of sacks available the considerations affecting the choice of sack packaging equipment are examined. Descriptions of basic open mouth and valve sack packing installations are given. The principles of operation of the various types of packers and their applications…read more
bulk solids handling Journal Research Paper Principles of Hydraulic and Pneumatic Conveying in Pipes The principles for the calculation and the design of pneumatic and hydraulic conveying plants cannot be fully treated within the space available here. Only some essential points will be discussed which are related directly to the pipe flow of solid-fluid mixtures and which relate to the actual conve…read more
Case Study Metso: The first GP330 Cone Crusher in Germany proves its Reliability at BAG Rammelsbach Quarry “Reliability of operation is clearly the number one target for us. With our new Nordberg® GP330 cone crusher we have secured a trouble-free, continuous secondary crushing process that enables us to produce daily some 4,000 tons of high-quality aggregates.” This is how Production manager Kurt S…read more
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 Pipe Behaviour in Bottom Ash Slurry Systems This study presents the results of an 18-year long investigation of pipe deterioration in cyclone stag slurry transport. The goal was to study pipe behaviour in this extremely abrasive service and select an optimum piping material. Comparisons are given for high quality alloy cast steel pipes and pi…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 Circular Blending System for Coal PHB Weserhütte (PWH) have built and recently commissioned two circular stockpile systems which are used to stack, homogenize and reclaim raw coal for Gewerkschaft Sophia Jacoba in Hückelhoven, Germany. The total system is the first circular stockpile blending plant of its kind in the world and bec…read more
bulk solids handling Journal Case Study Fast and Dust-free Delivery: Dust Control at Buxton Cement’s Rail Depots To reduce the environmental impact of its cement transport operations, Buxton Cement has transferred regular load from road to rail. Dust abatement systems installed at silos and road tanker loading facilities keep environment pollution to a minimum. read more
bulk solids handling Journal Technical Article Truck Dispatching by Computer Simulation This paper describes the results of a digital computer simulation study in which the impact of the proposed truck dispatching on the overall mine productivity was investigated for an operating open pit mine. In the study the existing operation was first simulated for a one-month period using both t…read more
bulk solids handling Journal Technical Article Feeding of Bulk Solids: A Review The benefits of mass flow have long been recognized: elimination of ratholing, controlled flow of fine powders without flooding, minimization of segregation, defined and predictable residence time for processing applications, no stagnant regions where particles can degrade, etc. Design techniq…read more
bulk solids handling Journal White Paper Self-Unloading Vessel Equipped With Bucket Wheel A novel self-discharging system is helping to ensure rapid turnaround and maximum utilisation of the MV Cambourne for her owners, Civil & Marine Ltd. of Greenhithe, Kent. The system is based on a bucket wheel designed and manufactured by Strachan & Henshaw, which discharges dredged sand…read more
bulk solids handling Journal Research Paper Reclaim Power and Geometry of Bin Interfaces in Belt and Apron Feeders Based on common sense measures and a simplified physical model, some design criteria are given for achieving proper dimensioning of bin interfaces in the case of belt and apron feeders. How the reclaim power closely related to wear, depends on the geometry of the interface between silo and feeder is…read more
bulk solids handling Journal White Paper Stacking, Blending and Reclaiming of Coal In many parts of the world, partly due to hard weather conditions, development has in many cases led to stockpiling and reclaiming methods in which more conventional boom stackers and bucket wheel reclaimers have been replaced by stacking conveyors and underground feeders and conveyors. read more
bulk solids handling Journal Technical Article A Computer Simulation Model for a Surface Coal Mine This paper describes the application of the open pit materials handling simulator (OPMHS) to a surface coal mine in Illinois. The mining method practiced is classified under the general heading Area Mining. The overburden is removed by a bucket wheel excavator (BWE) and a stripping shovel operating …read more
bulk solids handling Journal White Paper 'Lean' Sample Preparation: Saving Money with your own Sample Preparation With a new and efficient system for sample preparation in the steel industry less material is needed to be sent out for external analysis providing a mayor saving in material costs. The mechanised preparation process results in more samples enabling a quality improvement in the actual production pro…read more
bulk solids handling Journal White Paper Baking Powder from Coke – New Process for Eco-friendly Conversion of Process Gases In a new process developed in cooperation between ThyssenKrupp and Berlin Technical University coke oven gas, a by-product from the production of coke, can be converted into marketable products such as fertilizers or chemical propellants. 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 Computer Assisted Terminal Operations Management Systems This paper describes an integrated computer facility supporting the functions and responsibilities of shift operations scheduling maintenance and management using real-time interactive techniques. The functions and responsibilities as related to coal export terminals are specifically addressed altho…read more
bulk solids handling Journal Case Study “Clean” Recycling – Concrete & Asphalt Recycler utilizes Atomized Dust Suppression Reducing the need to landfill huge amounts of reusable debris from road repair includes the processing of these materials during which a greaat amount of dust is produced. A California company solved its dust problems with an special water mist generator. 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 Canadian Grain Facility Undergoes Major Transformation Historic and beautiful Quebec City the capital of Quebec Province which was founded in 1608, is Canada's oldest city. It is strategically located at the intersection of the St. Lawrence and St. Charles Rivers. The junction of these two waterways provided a geographic ' natural' for the development o…read more