Effect of mechanical-chemical modification on adsorption of beryllium by calcite.

The treatment of beryllium wastewater has become a major problem in industry. In this paper, CaCO is creatively proposed to treat beryllium-containing wastewater. Calcite was modified by an omnidirectional planetary ball mill by a mechanical-chemical method.

Delimiting radiation protection distance of underground uranium mining and metallurgy facilities: A case study in China.

Delimiting radiation protection distance of uranium mining and metallurgy facilities is an important radiation protection approach to control the effective public dose caused by radon and radon progeny. Ventilation shafts are the main radon release paths of underground uranium mines. It is of great importance to research the diffusion regularities and influence range of the radon around the ventilation shaft.

Case studies of radioactivity of drilling mud for in situ leaching uranium mining in China.

The drilling mud from in situ leaching uranium mining is a type of low-radioactivity waste that contains natural nuclides and other harmful substances. In order to determine whether the drilling mud can meet the requirements of radioactive exemption management standards, field investigations and data simulations were conducted in this study. Two typical uranium mines were selected for onsite investigations.

Estimation of radon release rate for an underground uranium mine ventilation shaft in China and radon distribution characteristics.

Radon, known to be a human carcinogen, is one of the most concerned radionuclides in uranium mining which need to be monitored and controlled. A large amount of radon is discharged to the atmosphere mainly through underground ventilation shafts for underground uranium mining. There are many studies on radon release of uranium mine, but the differences of the measured radon results are very big.