Study on the Ore-forming condition and occurrence of uranium minerals in sandstone-type uranium deposits from Ordos basin, Northwest China

2006 ◽  
Vol 70 (18) ◽  
pp. A720 ◽  
Author(s):  
X.Y. Yang ◽  
M.X. Ling ◽  
W. Sun ◽  
C.Y. Liu
Keyword(s):  
Ordos Basin ◽  
Northwest China ◽  
Uranium Deposits ◽  
Forming Condition ◽  
Uranium Minerals

The Relationship between Jurassic Coal Measures and Sandstone-type Uranium Deposits in the Northeastern Ordos Basin, China

2016 ◽  
Vol 90 (6) ◽  
pp. 2117-2132 ◽  
Author(s):  
Yangquan JIAO ◽  
Liqun WU ◽  
Hui RONG ◽  
Yunbiao PENG ◽  
Aisheng MIAO ◽  
...  
Keyword(s):  
Ordos Basin ◽  
Uranium Deposits ◽  
Jurassic Coal ◽  
Coal Measures ◽  
The Relationship

scholarly journals Relationship between sandstone-type uranium deposits and hydrocarbon in the northern ordos basin

2017 ◽  
Vol 64 ◽  
pp. 012027
Author(s):  
Feifei Wang ◽  
Jianqiang Wang ◽  
Pei Guo ◽  
Xianghu Cheng ◽  
Bei Li ◽  
...  
Keyword(s):  
Ordos Basin ◽  
Uranium Deposits

Establishment of Models for Tight Sandstone Formation Evaluation in the Ordos Basin of Northwest China

2014 ◽  
Vol 989-994 ◽  
pp. 1372-1375 ◽  
Author(s):  
Xiao Lei Wei ◽  
Jun Li ◽  
Rui Xu ◽  
Ling Ling Zhi
Keyword(s):  
Ordos Basin ◽  
Northwest China ◽  
Tight Sandstone ◽  
Reserve Estimation ◽  
Formation Evaluation ◽  
Porosity And Permeability ◽  
Important Input ◽  
The Ordos Basin ◽  
Sandstone Formation ◽  
Relative Errors

Porosity and permeability are two important input parameters in formation evaluation. However, It faces a great challenge for formation porosity and permeability estimation in tight sandstone reservoirs in the Ordos basin of northwest China due to the greater contribution of rock matrix and complicated pore structure. In this paper, based on the analysis of conventional log responses and 324 core samples drilled from the target formations in different wells, the estimation models of reservoir porosity and permeability are established, and the reliability of these models are verified by comparing the calculated porosity and permeability by using the established models with core analyzed results. The absolute errors between these two kinds of porosities are all lower than 0.64%, and the relative errors between them are lower than 7.1%, these are coincided with the requirement of reserve estimation.

Synergetic Oxidation in Alkaline In-Situ Leaching Uranium: A Preliminary Case Study

2020 ◽  
Author(s):  
Wensheng Liao ◽  
Weimin Que ◽  
Liming Wang ◽  
Zhiming Du
Keyword(s):  
Hydrogen Peroxide ◽  
Potassium Permanganate ◽  
Early Stage ◽  
No Oxidation ◽  
Complexing Agent ◽  
Uranium Deposits ◽  
Sodium Dichloroisocyanurate ◽  
Uranium Minerals ◽  
Low Efficiency

Abstract In alkaline in-situ leaching uranium, oxygen is the most common oxidizer with bicarbonate as a complexing agent. For those sandstone uranium deposits with strongly reductive capacity or complicated hydrogeological environment, the oxidation by oxygen is low efficiency. An efficient leaching method, therefore, is needed for these uranium deposits. In this study, a typical sandstone uranium deposit which characterizes with high TDS and high chloride content in groundwater and intractable uranium leach is selected to investigate the effects of synergetic oxidation by a strong oxidant with oxygen. Based on the research on batch leach, pressure leach and field trials, the oxidants such as hydrogen peroxide, potassium permanganate and sodium dichloroisocyanurate (NaDCC) are tested. The results of pressure batch leach indicate that synergetic oxidization is achieved by NaDCC in oxygen leaching process. Leaching tests indicate that a minor oxidizer of NaDCC shows good synergetic oxidization with oxygen and leaching effects on uranium minerals. The results also demonstrate that hydrogen peroxide shows no oxidation effects when it is used as a single oxidant. While potassium permanganate shows good oxidation on uranium when it is used as a single oxidant, however, it leads inhibiting effects on oxygen oxidation on uranium minerals. The further field tests are conducted to study the synergetic effects of oxygen with and without sodium dichloroisocyanurate. The preliminary results indicate that a fast leach is observed by the composite oxidants in early stage while no synergetic leach is found after 200 days. Further studies should be conducted in laboratory experiments and pilot scale tests for its potential applications.

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