CHARACTERISTICS OF PARAMETERS VARIABILITY OF COPPER ORE DEPOSIT ON THE EXAMPLE OF SELECTED PART OF LEGNICKO-GLOGOWSKI COPPER DISTRICT (POLAND)

2017 ◽  
Author(s):  
Katarzyna Pactwa
Keyword(s):  
Copper Ore ◽  
Ore Deposit

Major and minor element lithogeochemical anomalies surrounding the Louvem copper deposit, Val d'Or, Quebec

1978 ◽  
Vol 15 (7) ◽  
pp. 1161-1169 ◽  
Author(s):  
Guy Spitz ◽  
Richard Darling
Keyword(s):  
Major Element ◽  
Copper Deposit ◽  
Longitudinal Direction ◽  
Minor Element ◽  
Copper Ore ◽  
Ore Deposit ◽  
Chemical Zoning ◽  
Practical Tool ◽  
Volcanogenic Deposits ◽  
Alteration Pattern

Major element distributions in meta-rhyodacitic flows and fragmental rocks surrounding the Louvem volcanogenic copper deposit show a broad linear anomaly parallel to the local strike. At least 420 m long and up to 210 m wide, this altered area contains rocks that have high Fe+2, S, and low Na2O, CaO, and CO2 values. Included in the central portion of this large anomaly is a 100 m by 50 m highly altered area that contains rocks with high H2O and MgO values and crudely outlines the ore deposit.Element-ratio maps and a map showing percentage peraluminous character all display easily recognizable anomalies that mark the zone of altered rocks enclosing the ore deposit. Of the element ratios investigated at Louvem, Al2O3/Na2O appears to offer the most practical tool for mineral exploration.The chemical zoning of the altered fragmental layer that includes the copper ore is symmetrical about the long axis of the stratigraphically concordant orebody, but in a longitudinal direction this symmetry is absent. Instead, the alteration changes progressively from dominantly chloritic at the western end to pyritic at the eastern end of the study area. This alteration pattern seems to suggest that ore deposition was effected by hydrothermal solutions moving along the layer of now-altered fragmental rocks. By analogy with the chloritic alteration pipes underlying pyritic volcanogenic deposits, it seems probable that the direction of fluid flow was from west to east.

scholarly journals Optimal Extraction Methods Selection for Kakosa South Copper Ore Deposit Applying Modified Technique for Order of Preference by Similarity to Idea Solution Model

2019 ◽  
Vol 9 (1) ◽  
pp. 127-132
Keyword(s):  
Fuzzy Numbers ◽  
Underground Mining ◽  
Open Pit ◽  
Open Pit Mining ◽  
Extraction Techniques ◽  
Modified Technique ◽  
Copper Ore ◽  
Ore Deposit ◽  
Transition Depth ◽  
Sublevel Stoping

Kakosa South copper deposit is located about 450km northwest of Lusaka between Chingola and Chililabombwe. A comprehensive study of Kakosa South deposit was carried out. In Kakosa area the footwall aquifer rocks comprising sandstone and conglomerates which are thin and as such are not expected to represent major aquifers. Copper mineralisation is found in the upper quartzite and ore-shale. The inclination of the deposit ranges from 250 up to 350 . The hangingwall formations above the upper quartzite are represented by a sequence of dolomite and shale formations. Based on Kakosa geotechnical analysis and rock mass classification, fuzzy TOPSIS approach was employed for the selection of optimal extraction techniques. FTOPSIS approach has precise and specific quantities which are used in order to establish criteria and option weights. Triangular fuzzy numbers were determined to represent semantic variables. The fuzzy numbers for Kakosa South parameters were used as input data in the decision making model and matched against the criteria required for the mining method. Applying FDM model, extraction techniques were ranked. The results indicated that open pit extraction technique was ranked first with 78.90 scores followed by sublevel stoping with 66.88 scores. It is concluded that the Kakosa South copper ore deposit can optimally be extracted by open pit mining up to transition depth and transit from open pit mining to underground mining employing sublevel stoping.

scholarly journals The Comparison of Main Copper Sulphide Minerals Beneficiation Under Laboratory and Industrial Conditions at the KGHM Concentration Plant

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Paweł KURZYDŁO ◽  
Witold PAWLOS
Keyword(s):  
Laboratory Tests ◽  
Geological Structure ◽  
Copper Sulphide ◽  
Copper Ore ◽  
Ore Deposit ◽  
Sulphide Minerals ◽  
Concentration Plant ◽  
Complex Geological Structure ◽  
Process Line

The Zechstein copper ore deposit located on the Foresudetic monocline has a complex geological structure both in lithological and mineralogical aspects. The significant variability in quantity and quality of minerals deposited in the ore bed is one of the factors determining the susceptibility of copper ore to beneficiation based on flotation, which is carried out in the KGHM Concentration Plant. Based on the algorithm developed, flotation experiments on a laboratory scale have been conducted to predict the upgrade rates under industrial conditions. This paper provides the results of the mineralogical examination of the flotation products performed by one of the KGHM Concentration process lines and compares the beneficiation of various copper sulphide minerals. The results of the laboratory tests have been compared with the results of sampling carried out simultaneously at the process line. A procedure has been proposed to develop equations defining the industrial upgradability curves for copper sulphide minerals under the KGHM Concentration Plant conditions.

scholarly journals Effectiveness of reducing seismic hazard by means of group winning blasting - case study from a copper ore mine in Poland

2018 ◽  
Vol 66 ◽  
pp. 01010
Author(s):  
Anna Barbara Gogolewska ◽  
Natalia Czajkowska
Keyword(s):  
Seismic Event ◽  
Seismic Energy ◽  
Underground Mines ◽  
Copper Ore ◽  
Ore Deposit ◽  
South West ◽  
Effective Operation ◽  
Before And After

The copper ore deposit situated in the south-west of Poland is mined by three underground mines owned by KGHM Polish Copper JSC. Exploitation has been accompanied by rock burst hazard since the beginning. Thus, numerous different preventing measures have been developed such as temporary, organizational and long-term ones. However, no one has been able to predict the time, place and energy of a seismic event. The group winning blasting, with maximum number of blasted faces, is the most effective operation to reduce seismic threat. The more faces are blasted the more seismic energy should be reduced. The study aims at assessing the blasting effectiveness in inducing rock bursts and tremors. For this purpose, the seismic activity induced by mining and blasting were investigated. The number of blasting works and blasted faces as well as length of time between subsequent blasting works were analysed and related to provocation effectiveness. The linear correlation and different regressions were calculated to determine these relations. Moreover, the seismic energy reduction in the rock mass was evaluated by means of SRMS Index, which is a factor measured directly before and after blasting. The analyses covered one mine panel in the Polkowice-Sieroszowice copper mine over four-year period.

scholarly journals Effects of Pyrite Texture on Flotation Performance of Copper Sulfide Ores

Minerals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1218
Author(s):  
İlkay B. Can ◽  
Seda Özçelik ◽  
Zafir Ekmekçi
Keyword(s):  
Copper Sulfide ◽  
Surface Cleaning ◽  
Copper Recovery ◽  
Sulfide Ores ◽  
Copper Ore ◽  
Ore Deposit ◽  
Framboidal Pyrite ◽  
Process Plant ◽  
Flotation Performance ◽  
Flotation Behavior

Pyrite particles, having framboidal/altered texture, are known to significantly affect pulp chemistry and adversely affect flotation performance. Therefore, the main objectives of this study were to demonstrate influence of pyrite mineralogy on the flotation of copper (sulphidic) ores and develop alternative conditions to improve the performance. Two copper ore samples (Ore A and Ore B) having different textural/modal mineralogy and flotation characteristics were taken from different zones of the same ore deposit. Ore B contained framboidal pyrite and altered pyrite/marcasite, which is considered the main reason for the low flotation performance in both copper and pyrite flotation sections of the process plant. Flotation tests were conducted under different conditions using the two ore samples and a 50:50 blend. The results showed that Ore A could be concentrated under the base conditions, as applied in the existing flotation plant. On the other hand, Ore B did not respond to the base conditions and a copper recovery of only 5% could be obtained. Besides, blending Ore B with Ore A negatively affected the flotation behavior of Ore A. An alternative flotation chemistry was applied on Ore B using Na2S for surface cleaning and Na-Metabisulfite (MBS) for pyrite depression in the copper flotation stage. The surface cleaning reduced the rate of oxidation of the framboidal pyrite in Ore B. As a result, the copper recovery could be increased to 52% Cu for Ore B, and 65% for the mixed ore sample.

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