Browsing by Subject "Computer software"
Now showing 1 - 3 of 3
- Results Per Page
- Sort Options
Item Iron Ore Processing Improvements through Process Modeling and Computer Simulation(University of Minnesota Duluth, 2001-06-15) Ersayin, SalihIn 1997, under the auspices of the Iron Ore Cooperative Research Program, iron ore mining companies operating on the Iron Range decided to work as a consortium in establishing expertise in the development of math models of individual taconite concentration operations and their use to simulate portions of the integrated concentration process. This led to the establishment in 1998 of the Concentrator Modeling Center within the Coleraine Minerals Research Laboratory (CMRL) of the University of Minnesota - Duluth. Following discussions on the type of software to be used by the Center, Usim Pac, mineral processing software developed by BRGM of France was selected due to the availability of a larger number of models, and model incorporation capability to add those to be developed in the future. The Center became fully operational when Dr. Salih Ersayin started to work as the program director on Nov. 1, 1999. While the application of modeling and simulation has provided significant benefits in the processing of base metal ores, its application to the processing of magnetic taconite has been hindered. This was caused by the need to incorporate the modeling of mineral liberation into the comminution models for size reduction steps, which occur between several stages of magnetic separation. An initial effort at integrating the modeling of size reduction, mineral liberation was carried out by Wiegel1 for the Erie Mining Company process in 1976. Plant scale implementation of the combined use process modeling and plant testing was reported for the National Steel Company secondary grinding section modifications 2 . Recently, Schneider 3 developed a mineral liberation model based on liberation characterization by scanning electron microscopy measurements. He validated his model using plant data obtained from the Fairlane Plant of Eveleth Taconite. For simulation purposes, he integrated his liberation approach into a ball mill grinding model. He also presented magnetic separator and hydrocyclone model structures compatible with the type of data produced by the liberation model. Despite of these developments, there still was a need to develop a simplified approach to the integrated size reduction/liberation model for taconite processing, models for magnetic separators, hydroseparators and fine screens, which would take into account the significant operating and design parameters. Therefore, the initial efforts of the Center were concentrated on development of simplified integrated mineral liberation/size reduction and magnetic separator models using funds allocated by the Permanent University Trust Fund (PUF), while providing a simulation service to taconite plant operators with the available software. Data from four plants in the Range taken as a part of an earlier Iron Ore Coop project was analyzed using the existing capabilities of the software. The data was first mass balanced and performance of individual pieces of equipment was examined. Results were presented to the plant engineers; their implications and potential improvements were discussed. To illustrate the capabilities of the software and potential benefits from the use of simulation, some modifications in plant flow sheets and operating/design conditions were simulated using the same data as a basis. These simulation results were also presented to the relevant engineers.Item Oral history interview with Bobby A. Creech(Charles Babbage Institute, 1987-06-27) Creech, Bobby A.Creech, manager of Product Technology Operations at Unisys' Pasadena plant at the time of the interview, discusses his career at the Burroughs Corporation since 1962. Subjects discussed include: his management of software and programming on the B 6500; coding for data communications on the B 5500; his responsibilities as the Terminal Systems Group director; and his management of the Medium Systems Group at Pasadena.Item Oral history interview with Phyliss Murphy(Charles Babbage Institute, 2008-12-18) Murphy, PhylissThis oral history details the career of computer services entrepreneur Phyliss Murphy and offers an important perspective on the history of the supplemental IT staffing industry. She discusses her early training and work in accounting, shifting to programming and direction of IT operations, move to managing projects and IT services operations at Consumer Systems (headquartered in Chicago), forming her own IT staffing firm in Southern California (Phyliss Murphy and Associates), and running this firm for the past twenty-eight years. She also provides perspective on the significance of trade associations for the IT supplemental staffing industry—including SC-SCBA and the NACCB.