scholarly journals Influence of the "pumping wells" technology on the indicators of in situ leaching of uranium

2021 ◽  
Vol 317 (2) ◽  
pp. 30-36
Author(s):  
S. B. Aliev ◽  
◽  
Omarbekov Ye.U. ◽  
◽  
Keyword(s):  
High Pressure ◽  
Experimental Research ◽  
Production Cost ◽  
Uranium Deposits ◽  
Ph Values ◽  
Pumping Wells ◽  
Experimental Works ◽  
The Cost

This paper presents the results of experimental research applications "pumping wells" when the mining of uranium deposits by the method of In-Situ Leach Mining ISL in mine "Karatau". Analyzed the experience results of uranium deposits development in the conditions of high-pressure nature of groundwater. The experimental works have been conducted using proposed “pumping wells” technology. The implementation of the proposed "pumping well" technology did not affect the Me and pH values in comparison with the actual technology, but it did reduce the production cost. It is proved that by using the proposed technology and schemes in conditions of high-pressure nature of groundwater reduces the cost of procurement of cables, significantly reducing the cost of acquisition of submersible pumps, savings in the end cap.

scholarly journals The effect of «pumping wells» procedure on the flow rate of extraction wells

2020 ◽  
Vol 2 (313) ◽  
pp. 14-18
Author(s):  
Kh. A. Yusupov ◽  
◽  
E.U. Omarbekov ◽  
Keyword(s):  
Flow Rate ◽  
Production Costs ◽  
Uranium Deposits ◽  
Labor Costs ◽  
Populated Area ◽  
Southwestern Part ◽  
Pumping Wells ◽  
Statistical Level ◽  
Rate Of Extraction

Study of application of «pumping wells» when mining of uranium deposits by in-situ leaching (ISL) to the mine "Karatau" under conditions of high pressure of groundwater character was performed. The operating «Karatau» mine is located in a deserted, inaccessible, sparsely populated area in the southwestern part of the Shu-Sarysuy depression in the territory of the Suzaksky district, Turkestan oblast. The «Karatau» deposit differs from other deposits in that self-pouring of geotechnological wells with a statistical level of +20 m is observed at all sites. The use of traditional technology for such deposit leads to excessive material and labor costs. Therefore, the technology of "pumping wells" is proposed. It is shown that the use of "pumping wells" procedure leads to achieving a uniform flow rate of extraction wells, reduction in the purchase of the cable production costs for the purchase of submersible pumps and wells in the end cap.

scholarly journals Technological improvement of the scheme unit reception and distribution of solution under conditions of high-pressure nature of groundwater

2021 ◽  
Vol 316 (1) ◽  
pp. 40-45
Author(s):  
S. B. Aliev ◽  
◽  
Ye.U. Omarbekov ◽  
◽  
Keyword(s):  
Leach Solution ◽  
Processing Unit ◽  
Injection Wells ◽  
Pumping Wells ◽  
Acid Consumption ◽  
Bypass Line ◽  
Leaching Solution ◽  
Mine Development ◽  
The Cost

This paper analyses the experience uranium deposits mine development under conditions of highpressure nature of groundwater proposed technology "pumping wells" and upgrading technological scheme unit receiving and distribution of the solution. The results of experimental study of the use of "pumping wells" in mining deposits of uranium by in-situ leaching mine "Karatau". It is proved that by using the proposed technology and circuits under conditions of the high groundwater pressure reduces the cost of procurement of cables, significantly reduced the cost of acquisition of submersible pumps, savings in the end cap. In practice, one processing unit is equipped with one unit for receiving and distributing the solution, therefore, a leaching solution with the same acidity is supplied to all injection wells. To avoid such cases requires selective supply of different concentrations of acid with the different indicators pH. The modernization of the scheme of the unit for receiving and distributing the solution was carried out by connecting two bypass lines, where one bypass line is designed to transfer the injection wells to the pumping one, and the second one is to transfer the pumping wells to the pumping one. By connecting the two bypass lines, it will be possible to supply a leach solution with a higher acid concentration, selectively to any injection well. As a result, acid consumption will decrease due to its selective supply and pH values in wells will be balanced.

IMPLEMENTASI JOB ORDER COSTING METHOD DALAM PERHITUNGAN HARGA POKOK PRODUKSI MAP

2018 ◽  
Vol 4 (2) ◽  
pp. 43-55
Author(s):  
Ika Yulianti ◽  
Endah Masrunik ◽  
Anam Miftakhul Huda ◽  
Diana Elvianita
Keyword(s):  
Production Process ◽  
Quantitative Data ◽  
Production Cost ◽  
Qualitative Data ◽  
Cost Data ◽  
Method Calculation ◽  
Cost Of Production ◽  
The Right ◽  
The Cost

This study aims to find a comparison of the calculation of the cost of goods manufactured in the CV. Mitra Setia Blitar uses the company's method and uses the Job Order Costing (JOC) method. The method used in this study is quantitative. The types of data used are quantitative and qualitative. Quantitative data is in the form of map production cost data while qualitative data is in the form of information about map production process. The result of calculating the cost of production of the map between the two methods results in a difference of Rp. 306. Calculation using the company method is more expensive than using the Job Order Costing method. Calculation of cost of goods manufactured using the company method is Rp. 2,205,000, - or Rp. 2,205, - each unit. While using the Job Order Costing (JOC) method is Rp. 1,899,000, - or Rp 1,899, - each unit. So that the right method used in calculating the cost of production is the Job Order Costing (JOC) method

Single Crystal Growth of High-Pressure Phases of Ice and Salt Hydrate Far Below the Original Melting Point by Mixing Alcohol: Crystal Structure Determination of Magnesium Chloride Heptahydrate

2020 ◽  
Author(s):  
Keishiro Yamashita ◽  
Kazuki Komatsu ◽  
Hiroyuki Kagi
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Crystal Growth ◽  
Single Crystal ◽  
Room Temperature ◽  
Growth Technique ◽  
Salt Hydrate ◽  
X Ray

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl<sub>2</sub>·7H<sub>2</sub>O at 2.50 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.

scholarly journals Cover Picture: A Versatile Ambient‐to‐High‐Pressure Reaction Transmission Cell for in situ/operando Infrared Spectroscopic Investigations (Chemistry ‐ Methods 7/2021)

2021 ◽  
Vol 1 (7) ◽  
pp. 305-305
Author(s):  
Jana Weiß ◽  
Christine Rautenberg ◽  
Thomas Rall ◽  
Christoph Kubis ◽  
Evgenii Kondratenko ◽  
...  
Keyword(s):  
High Pressure ◽  
Spectroscopic Investigations ◽  
Infrared Spectroscopic ◽  
High Pressure Reaction

scholarly journals Seawater Absorption and Adhesion Properties of Hydrophobic and Superhydrophobic Thermoset Epoxy Nanocomposite Coatings

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 272
Author(s):  
Ayman M. Atta ◽  
Mohamed H. El-Newehy ◽  
Meera Moydeen Abdulhameed ◽  
Mohamed H. Wahby ◽  
Ahmed I. Hashem
Keyword(s):  
Thermal Stability ◽  
Oleic Acid ◽  
Salt Spray ◽  
Adhesion Properties ◽  
In Situ Modification ◽  
Long Time ◽  
Seawater Environment ◽  
Thermoset Epoxy ◽  
The Cost

The enhancement of both thermal and mechanical properties of epoxy materials using nanomaterials becomes a target in coating of the steel to protect it from aggressive environmental conditions for a long time, with reducing the cost. In this respect, the adhesion properties of the epoxy with the steel surfaces, and its proper superhyrophobicity to repel the seawater humidity, can be optimized via addition of green nanoparticles (NPs). In-situ modification of silver (Ag) and calcium carbonate (CaCO3) NPs with oleic acid (OA) was carried out during the formation of Ag−OA and CaCO3−OA, respectively. The epoxide oleic acid (EOA) was also used as capping for Ca−O3 NPs by in-situ method and epoxidation of Ag−OA NPs, too. The morphology, thermal stability, and the diameters of NPs, as well as their dispersion in organic solvent, were investigated. The effects of the prepared NPs on the exothermic curing of the epoxy resins in the presence of polyamines, flexibility or rigidity of epoxy coatings, wettability, and coatings durability in aggressive seawater environment were studied. The obtained results confirmed that the proper superhyrophobicity, coating adhesion, and thermal stability of the epoxy were improved after exposure to salt spray fog for 2000 h at 36 °C.

scholarly journals A Versatile Ambient‐to‐High‐Pressure Reaction Transmission Cell for in situ/operando Infrared Spectroscopic Investigations

2021 ◽  
Vol 1 (7) ◽  
pp. 308-314
Author(s):  
Jana Weiß ◽  
Christine Rautenberg ◽  
Thomas Rall ◽  
Christoph Kubis ◽  
Evgenii Kondratenko ◽  
...  
Keyword(s):  
High Pressure ◽  
Spectroscopic Investigations ◽  
Infrared Spectroscopic ◽  
High Pressure Reaction

scholarly journals Pressure-induced Jahn-Teller Switch in the Homoleptic Hybrid Perovskite [(CH3)2NH2]Cu(HCOO)3: Orbital Reordering by Unconventional Degrees of Freedom

2021 ◽  
Author(s):  
Rebecca Scatena ◽  
Michał Andrzejewski ◽  
Roger D Johnson ◽  
Piero Macchi
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Coordination Polymer ◽  
Degrees Of Freedom ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hybrid Perovskite ◽  
Jahn Teller

Through in-situ, high-pressure x-ray diffraction experiments we have shown that the homoleptic perovskite-like coordination polymer [(CH3)2NH2]Cu(HCOO)3 undergoes a pressure-induced orbital reordering phase transition above 5.20 GPa. This transition is distinct...

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