scholarly journals Geological Reserve Estimation of Limestone Deposit: A Comparative Study Between ISDW and OK

2020 ◽  
Vol 81 (1-4) ◽  
pp. 72-77
Author(s):  
Manas K. Mallick ◽  
Bhanwar S. Choudhary ◽  
Gnananandh Budi
Keyword(s):  
Linear Method ◽  
Mining Industry ◽  
Mine Planning ◽  
Reserve Estimation ◽  
Time Saving ◽  
Ore Deposit ◽  
Grade Estimation ◽  
Planning Software ◽  
Distance Weighting ◽  
High Degree

Geostatistics plays an important role for reserve estimation in mining industry. Geostatistical tools became popular because of its high degree of accuracy and time saving process for estimation. The uncertainty of geological deposit can be populated by geo-statistical tools. The limestone ore deposit was studied in this paper. The assay value of individual constituents of limestone ore i.e CaO, SiO2, Al2O3 and Fe2O3 were determined for a block by using Inverse Square Distance Weighting (ISDW) method. The average assay value of those individual constituents were 45.85, 15.94, 1.56 and 0.82 percentage respectively. The assay value of CaO was also estimated by two linear method of estimation i.e ISDW and Ordinary Kriging (OK). The assay value of CaO were determined 45.85 and 44.67 percentage respectively. The assay values were properly validated and concluded accordingly. The application of ISDW and OK were implemented to build the resource model together in order to assess the uncertainty of the deposit. Grade estimation by using different geo-statistical techniques are done by SURPAC mine planning software.

Application of Concentration-Number and Concentration-Volume Fractal Models to Recognize Mineralized Zones in North Anomaly Iron Ore Deposit, Central Iran / Zastosowanie Modeli Fraktalnych Typu K-L (Koncentracja-Liczba), Oraz K-O (Koncentracja Objętość) Do Rozpoznawania Stref Występowania Surowców Mineralnych W Regionie Złóż Rud Żelaza North Anomaly, W Środkowym Iranie

2015 ◽  
Vol 60 (3) ◽  
pp. 777-789 ◽  
Author(s):  
Peyman Afzal ◽  
Reza Ghasempour ◽  
Ahmad Reza Mokhtari ◽  
Hooshang Asadi Haroni
Keyword(s):  
Iron Ore ◽  
Wall Rock ◽  
Fractal Model ◽  
Mine Planning ◽  
Central Iran ◽  
Ore Deposit ◽  
Planning And Design ◽  
Fractal Models ◽  
Mineralized Zone ◽  
Iron Ore Deposit

Abstract Identification of various mineralized zones in an ore deposit is essential for mine planning and design. This study aims to distinguish the different mineralized zones and the wall rock in the Central block of North Anomaly iron ore deposit situated in Bafq (Central Iran) utilizing the concentration-number (C-N) and concentration-volume (C-V) fractal models. The C-N model indicates four mineralized zones described by Fe thresholds of 8%, 21%, and 50%, with zones <8% and >50% Fe representing wall rocks and highly mineralized zone, respectively. The C-V model reveals geochemical zones defined by Fe thresholds of 12%, 21%, 43% and 57%, with zones <12% Fe demonstrating wall rocks. Both the C-N and C-V models show that highly mineralized zones are situated in the central and western parts of the ore deposit. The results of validation of the fractal models with the geological model show that the C-N fractal model of highly mineralized zones is better than the C-V fractal model of highly mineralized zones based on logratio matrix.

scholarly journals Continuous preparation of carbon-nanotube-supported platinum catalysts in a flow reactor directly heated by electric current

2011 ◽  
Vol 7 ◽  
pp. 1412-1420 ◽  
Author(s):  
Alicja Schlange ◽  
Antonio Rodolfo dos Santos ◽  
Ulrich Kunz ◽  
Thomas Turek
Keyword(s):  
Large Scale ◽  
Flow Reactor ◽  
Continuous Process ◽  
Tubular Reactor ◽  
Carbon Support ◽  
Time Saving ◽  
Highly Active ◽  
Supported Platinum Catalysts ◽  
Cost Efficient ◽  
High Degree

In this contribution we present for the first time a continuous process for the production of highly active Pt catalysts supported by carbon nanotubes by use of an electrically heated tubular reactor. The synthesized catalysts show a high degree of dispersion and narrow distributions of cluster sizes. In comparison to catalysts synthesized by the conventional oil-bath method a significantly higher electrocatalytic activity was reached, which can be attributed to the higher metal loading and smaller and more uniformly distributed Pt particles on the carbon support. Our approach introduces a simple, time-saving and cost-efficient method for fuel cell catalyst preparation in a flow reactor which could be used at a large scale.

scholarly journals Primary Research of Mine Waters from the Chrustenice Iron-Ore Deposit/ Prvotní Průzkum Důlních Vod Železorudného Ložiska Chrustenice

2012 ◽  
Vol 58 (4) ◽  
pp. 23-27
Author(s):  
Tomáš Bouchal ◽  
Jaroslav Závada ◽  
Hana Vojtková ◽  
Silvie Langarová ◽  
Radim Havelek
Keyword(s):  
Iron Ore ◽  
Mining Industry ◽  
Point Of View ◽  
Primary Study ◽  
Primary Research ◽  
Mine Waters ◽  
Ore Deposit ◽  
History Museum ◽  
Mining History ◽  
Iron Ore Deposit

Abstract This paper describes the primary research of mine waters in the Chrustenice Iron-ore Deposit. A particular attention is paid here to the research of microorganisms living in that environment. The goal of the research is to analyse mine waters in the area which was abandoned by people more than 45 years ago and to investigate microorganisms and representatives of species present there in the mine waters. The Chrustenice Mine ranked among the biggest and most important iron ore mines in Barrandien. This mine along with the mines in Nučice, Zdice, Nový Jáchymov and Mníšek pod Brdy contributed to the fame of the regional mining industry. Sedimentary oolitic iron ore in Chrustenice consists mostly of red iron ore based on Černín layers, siderite and, to a lesser extent, of haematite and chamosite. In exceptional cases, magnetite is present there. The Černín shale is black clay shale with sandy ingredients and many potash-mica scales. Now, the mine is flooded up to the 8th level. In the remaining area, there is a mining history museum with dozens of exhibits. In samples of the mining water taken on the site, mostly iron, manganese and sulphur microorganisms were identified. The primary study of the mine waters in the iron-ore deposit shows that, from the microbiological point of view, this site is very interesting and many chemolithotrophic species of bacteria are present there.

Sign in / Sign up

Export Citation Format

Share Document