scholarly journals Combined Magnetic, Transient Electromagnetic, and Magnetotelluric Methods to Detect a BIF-Type Concealed Iron Ore Body: A Case Study in Gongchangling Iron Ore Concentration Area, Southern Liaoning Province, China

Minerals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1044
Author(s):  
Jianfei Fu ◽  
Sanshi Jia ◽  
Ende Wang
Keyword(s):  
Data Collection ◽  
Iron Ore ◽  
Survey Methods ◽  
Survey Method ◽  
Magnetic Survey ◽  
Iron Ores ◽  
Transient Electromagnetic ◽  
Ore Bodies ◽  
Geophysical Surveys ◽  
Iron Bearing

The detection and evaluation of concealed mineral resources deep in metallic mines and in the surrounding areas remain technically difficult. In particular, due to the complex topographic and geomorphic conditions on the surface, the detection environments in these areas limit the choices of detection equipment and data collection devices. In this study, based on metallogenic theory and the metallogenic geological characteristics of banded iron formation (BIF)-type iron ores, equipment for surface geophysical surveys (i.e., the high-precision ground magnetic survey method, the transient electromagnetic method, and the magnetotelluric method) and data collection devices capable of taking single-point continuous measurements were employed to detect the concealed iron ore bodies in the transition zone CID-1 between the Hejia and Dumu iron deposits in the Gongchangling iron ore concentration area in the Anshan-Benxi area (Liaoyang, China), a representative area of BIF-type iron ores. The results showed that an optimal combination of these geophysical survey methods accurately determined the anomalous planar spatial locations and anomalous profile morphologies of the concealed iron ore bodies. On this basis, we determined their locations, burial depths, and scales. Two anomalous zones induced by concealed iron ore bodies, YC-1 and YC-2, were discovered in zone CID-1. Two concealed iron-bearing zones, one shallow (0–150 m) and one deep (300–450 m), were found in YC-1. A 100 m scale drilling test showed that the cumulative thickness of the shallow iron-bearing zone was over 23.6 m.

scholarly journals Analisis Finansial Pembesaran Ikan Bandeng (Chanos chanos) pada Tambak Tradisional dengan Sistem Monokultur dan Polikultur di Kecamatan Mulyorejo, Surabaya, Jawa Timur [ Financial Analysis of Fish Enlargement Milkfish (Chanos chanos) in Pond with Traditional Farming and Monoculture Polyculture System in Mulyorejo, Surabaya, East Java]

2019 ◽  
Vol 7 (2) ◽  
pp. 169 ◽  
Author(s):  
Asmaul Huniyah ◽  
Moch Amin Alamsjah ◽  
Kustiawan Tri Pursetyo
Keyword(s):  
Data Collection ◽  
Financial Analysis ◽  
Raw Materials ◽  
Survey Methods ◽  
National Development ◽  
Survey Method ◽  
Economic Sectors ◽  
Chanos Chanos ◽  
Average Value ◽  
The Relationship

Abstract Fishing is one of the economic sectors that have potential and an important role for the Indonesian economy. The fisheries sector also have contributed to the national development can be seen from its function as a provider of raw materials driving agro-industries, increase the supply of foreign exchange through the export of fishery products, providers of employment opportunities, increase the income of fishermen or fish farmers and regional development, as well as increasing the sustainability of fishery resources and the environment. The method used in this research is descriptive method. The process of data collection was conducted by questionnaire survey method with existing guidelines. Survey methods not only to create a description of a situation, but also to explain the relationship between the various variables studied. Data collection can use a questionnaire or survey questionnaires, interviews or observation in accordance with the needs of researchers (Moleong, 2009). This study aims to determine the potential for cultivation of fish rearing milkfish (Chanos C.) were performed on traditional pond polyculture and monoculture systems by farmers in districts Mulyorejo. Potential cultivation can be known through a financial analysis that determines a feasible endeavor or not to do business development. Results from this study indicate that milkfish fish rearing business conducted in the region, including in businesses that are not feasible, because the percentage of farmers who obtained a profit of 20% and the loss of 80% .. The average value of B / C Ratio obtained by farmers ie -0.17, the average value obtained by farmers Payback Period at 0 and the average value obtained Return on Investment farmers amounted to -22%. The third data indicate that milkfish fish rearing business is done in traditional ponds in the districts Mulyorejo not in accordance with the standards of good business and profitable .

GEOPHYSICAL SURVEY OF THE ARKANSAS BAUXITE REGION

Geophysics ◽  
1944 ◽  
Vol 9 (3) ◽  
pp. 324-366 ◽  
Author(s):  
Mark C. Malamphy ◽  
James L. Vallely
Keyword(s):  
Hot Spring ◽  
Geophysical Survey ◽  
Geophysical Data ◽  
Magnetic Survey ◽  
Large Area ◽  
Clark County ◽  
Ore Bodies ◽  
Geophysical Surveys ◽  
Bauxite Ore ◽  
Geophysical Anomalies

Magnetic and gravimetric surveys were conducted over an area of approximately 1400 square miles in the bauxite district of central Arkansas. The primary purpose of these surveys was to discover any possible buried and hitherto unknown syenite masses favorable for the occurrence of bauxite and to determine the approximate position of the buried flanks of the known syenite masses which might offer conditions favorable for the discovery of new ore bodies. These surveys indicated that the various syenite outcrops are domes or bosses on a large batholith and that other similar domes occur on the batholith but do not outcrop. Drilling on the local geophysical anomalies proved the presence of 10 buried domes, but only 2 were found to project above the upper surface of the Midway clays, a requisite of conditions favorable for the occurrence of bauxite ore bodies. The geophysical data indicated the approximate configuration of the buried flanks of the known syenite outcrops, and the portions of these flanks that project above the Midway have now been outlined more accurately by drilling. The geophysical surveys have produced evidence permitting the elimination of a large area as unfavorable for the occurrence of bauxite. Magnetic surveys extending along the Midway‐Wilcox contact from Gurdon in Clark County on the southwest to Searcy in White County on the northeast have proved the improbability of the existence of other syenite masses similar to those found in Pulaski and Saline Counties. A detailed magnetic survey of the Magnet Cove area in Hot Spring County has proved that the syenite mass exposed in that locality is an isolated intrusion and entirely unrelated to those of Pulaski and Saline Counties. This syenite mass does not occur under conditions believed to be favorable for the occurrence of bauxite.

Airborne geophysical surveys in central West Greenland and central East Greenland in 1997

1998 ◽  
pp. 63-66
Author(s):  
Leif Thorning ◽  
Robert W. Stemp
Keyword(s):  
Digital Data ◽  
Magnetic Survey ◽  
The European Union ◽  
Aeromagnetic Survey ◽  
East Greenland ◽  
West Greenland ◽  
Transient Electromagnetic ◽  
Geophysical Surveys ◽  
The Government ◽  
North Greenland

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Thorning, L., & Stemp, R. W. (1998). Airborne geophysical surveys in central West Greenland and central East Greenland in 1997. Geology of Greenland Survey Bulletin, 180, 63-66. https://doi.org/10.34194/ggub.v180.5087 _______________ In order to stimulate mining exploration activity in Greenland the Government of Greenland decided in 1993 to finance a five-year programme of airborne electromagnetic surveys over selected regions of Greenland, Project AEM Greenland 1994–1998. By the end of 1996 three surveys had been undertaken in various parts of Greenland (Stemp & Thorning 1995a, b; Stemp 1996a, b; Stemp 1997a, b). In 1992 the Danish Government financed a small aeromagnetic survey (Project Aeromag 1992; Thorning 1993). Regional aeromagnetic surveying was taken up again when the governments of Denmark and Greenland jointly financed two aeromagnetic surveys in 1995 and 1996 – the projects Aeromag 1995 and Aeromag 1996 (Thorning & Stemp 1997). To this suite of airborne geophysical surveys of selected regions in Greenland were added two surveys in 1997, both financed by the Government of Greenland. The fourth year of Project AEM Greenland 1994–1998 encompassed a transient electromagnetic (GEOTEM) and magnetic survey over northern Jameson Land, central East Greenland, while Project Aeromag 97 added a regional aeromagnetic survey over Disko Bugt – Nuussuaq, central West Greenland. As in previous years, commercial geophysical contractors carried out the survey operations in Greenland according to an agreement with the Geological Survey of Denmark and Greenland (GEUS) entered into after international tendering following rules of the European Union. GEUS manages the projects and organises the distribution and use of the results. The new maps and digital data from the two 1997 surveys, a total of 85 252 line kilometres of data covering 51 414 km2, were released to the public on 1 March 1998. This note provides some introductory information about the two surveys. Further information can be found in reports by Stemp (1998) and Thorning (in press); both include a number of full-page colour anomaly maps from the survey areas. The airborne geophysical programme will continue in 1998, and the areas to be surveyed have already been selected. The final year of Project AEM Greenland 1994–1998 will include combined GEOTEM and magnetic surveys over two regions in North Greenland: Washington Land in western North Greenland, where operations are expected to start in May 1998 operating out of Alert in Canada, and later in the season over J.C. Christensen Land in central North Greenland operating out of Station Nord in eastern North Greenland. Project Aeromag 1998 will continue the regional aeromagnetic survey programme in West Greenland, extending the coverage by including most of the region from 63°45′N to 66°N in southern West Greenland. This project will be based at Nuuk and start in March 1998. The Government of Greenland will finance all surveys in 1998. Figure 1 shows all survey areas for the electromagnetic and magnetic surveys of Project AEM Greenland 1994–1998 and the aeromagnetic survey areas of Project Aeromag 1992, 1995, 1996, 1997 and 1998.

scholarly journals Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review

Minerals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 681
Author(s):  
Guixia Fan ◽  
Liguang Wang ◽  
Yijun Cao ◽  
Chao Li
Keyword(s):  
Iron Oxides ◽  
Iron Ore ◽  
Froth Flotation ◽  
Surface Characteristics ◽  
Iron Ores ◽  
Reverse Flotation ◽  
Adsorption Mechanisms ◽  
Collecting Agents ◽  
Different Types ◽  
Iron Bearing

Froth flotation has been widely used in upgrading iron ores. Iron ore flotation can be performed in two technical routes: direct flotation of iron oxides and reverse flotation of gangue minerals with depression of iron oxides. Nowadays, reverse flotation is the most commonly used route in iron ore flotation. This review is focused on the reverse flotation of iron ores, consisting of reverse cationic flotation and reverse anionic flotation. It covers different types of collecting agents used in reverse iron ore flotation, the surface characteristics of minerals commonly present in iron ores (e.g., iron oxides, quartz, alumina-bearing minerals, phosphorus-bearing minerals, iron-bearing carbonates, and iron-bearing silicates), and the adsorption mechanisms of the collecting agents at the mineral surface. The implications of collecting agent–mineral interactions for improving iron ore flotation are discussed.

scholarly journals Evaluation of Mesh of Liberation of Zard Koh and Kulli Koh Iron Ores of Pakistan

2018 ◽  
Vol 37 (4) ◽  
pp. 569-580 ◽  
Author(s):  
Sultan Ahmed Khoso ◽  
Muhammad Ishaque Abro ◽  
Muhammad Hassan Agheem
Keyword(s):  
Iron Ore ◽  
Iron Ores ◽  
Size Fractions ◽  
X Ray ◽  
Concentration Method ◽  
Natural Iron ◽  
Energy Dispersive Spectroscope ◽  
Iron Bearing ◽  
Representative Samples ◽  
Scanning Electron

Liberation size plays a significant role to select a correct and successful concentration method for natural iron ores. This paper aims to evaluate the liberation size of two newly discovered iron ores, namely Zard Koh and Kulli Koh, existing in Chagai region of Pakistan. Zard Koh iron ore is mainly composed of maghemite along with the pyrite, chlorite, grossular and admontite as gangue minerals, whereas, Kulli Koh iron ore is comprised of hematite mostly with quartz, dravite and kaolinite as the gangue minerals. The representative samples of ores were pulverized and sieved to different size fractions. The liberation size of iron bearing minerals and gangues was investigated by analyzing the different size fractions of each ore using XRF (X-Ray Fluorescence), SEM (Scanning Electron Microscope) attached with EDS (Energy Dispersive Spectroscope). The XRF results revealed that the most probable liberation size of Zard Koh and Kulli Koh ores is most likely existing at -75+45 and -150+106 m, respectively. In order to confirm this liberation size, further evidences were collected using SEM and EDS examinations. It is interesting to note that the results obtained from SEM and EDS were quite in agreement with XRF results.

scholarly journals Production of pellet feed from slimes

2013 ◽  
Vol 66 (3) ◽  
pp. 391-395 ◽  
Author(s):  
Elias Fonseca Castro ◽  
Antonio Eduardo Clark Peres
Keyword(s):  
Representative Sample ◽  
Iron Ore ◽  
Silica Content ◽  
Iron Ores ◽  
Reverse Flotation ◽  
Iron And Steel ◽  
Steel Making ◽  
Pellet Feed ◽  
Iron Bearing ◽  
Iron Ore Concentrate

The recovery of iron bearing minerals from the reject products of the beneficiation of iron ores is a challenge concerning the sustainability of the preliminary stage of iron and steel making. This investigation addressed the production of iron ore concentrate within the specifications of Samarco's pellet feed from a representative sample of the concentrator I desliming cyclone's (101.6 mm, 4") overflow. The experiments included stages of microdesliming and flotation. The developed microdesliming method was efficient and the concentrate produced via cationic reverse flotation presented silica content compatible with pellet feed requirements.

MOTIVASI KERJA PERAWAT DI RUANG RAWAT INAP RSUD MAJALAYA KABUPATEN BANDUNG

2020 ◽  
Author(s):  
Andria Pragholapati
Keyword(s):  
Data Collection ◽  
Work Environment ◽  
Sampling Method ◽  
Work Motivation ◽  
Survey Methods ◽  
Sampling Technique ◽  
Total Sample ◽  
Regional Hospital ◽  
High Work

Work motivation is an influential condition for arousing, directing, and maintaining behavior related to the work environment including nurse work motivation. The purpose of this study was to edit the Nurses' Work Motivation in the Inpatient Room of Majalaya Regional Hospital. This type of research uses analytic survey methods. The sampling method uses a total sampling technique with a total sample of 55 nurses in 6 inpatients. Data collection techniques using a work motivation questionnaire. The analysis used is univariate. The results of the study 28 people (50.9%) have high work motivation. The conclusion of the results of this study some nurses have work motivation of nurses in the inpatient room of Majalaya Regional Hospital. Based on the results of the study are expected to require motivation support to increase work motivation of nurses.

MODEL KEPUTUSAN PEMBELIAN MELALUI IMPLEMENTASI STRATEGI BAURAN PROMOSI PADA BISNIS ONLINE (STUDI KASUS: PADA TRANSPORTASI PT GOJEK INDONESIA)

2018 ◽  
Vol 16 (1) ◽  
pp. 85-92
Author(s):  
Eddy Soeryanto Soegoto
Keyword(s):  
Data Analysis ◽  
Data Collection ◽  
Analysis Procedure ◽  
Sales Promotion ◽  
Survey Method ◽  
Purchase Decision ◽  
Transportation Service ◽  
Analysis Technique ◽  
Community Relationship ◽  
Personal Sale

The goals of the research are to divulge the implementation of promotion mix strategy and its impact on the purchase decision towards the Go-jek online transportation service. The research-er uses a quantitative approach, descriptive and verified design, and survey method. As much as 100 respondents have been drawn using the purposive approach from the population of the Go-jek consumers. The data collection employs questionnaire and the path analysis procedure has been used as the data analysis technique. The findings of this research are as follows: the varia-bles of advertising, sales promotion, personal sale, publicity and community relationship fall into moderate – good category; moreover both partially and simultaneously the variables of advertis-ing, sales promotion, personal sale, publicity and community relationship, as well as direct mar-keting affect the purchase decision.

Airborne geophysical surveys in Greenland in 1998

1999 ◽  
pp. 34-38 ◽  
Author(s):  
Thorkild M. Rasmussen ◽  
Leif Thorning
Keyword(s):  
High Resolution ◽  
Geophysical Data ◽  
Digital Data ◽  
Geological Survey ◽  
Magnetic Data ◽  
Magnetic Survey ◽  
Original Series ◽  
Geophysical Surveys ◽  
The Government

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Rasmussen, T. M., & Thorning, L. (1999). Airborne geophysical surveys in Greenland in 1998. Geology of Greenland Survey Bulletin, 183, 34-38. https://doi.org/10.34194/ggub.v183.5202 _______________ Airborne geophysical surveying in Greenland during 1998 consisted of a magnetic project referred to as ‘Aeromag 1998’ and a combined electromagnetic and magnetic project referred to as ‘AEM Greenland 1998’. The Government of Greenland financed both with administration managed by the Geological Survey of Denmark and Greenland (GEUS). With the completion of the two projects, approximately 305 000 line km of regional high-resolution magnetic data and approximately 75 000 line km of detailed multiparameter data (electromagnetic, magnetic and partly radiometric) are now available from government financed projects. Figure 1 shows the location of the surveyed areas with highresolution geophysical data together with the area selected for a magnetic survey in 1999. Completion of the two projects was marked by the release of data on 1 March, 1999. The data are included in the geoscientific databases at the Survey for public use; digital data and maps may be purchased from the Survey.

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