4 results about "Uranium" patented technology

The invention belongs to the technical field of uranium enrichment and discloses a heating and evaporation device for the feeding of a uranium enrichment plant. According to the heating and evaporation device of the invention, air in an air duct is heated through an electric heater; being stirred by a circulation fan, the hot air is blown into a box body through the air outlet of the air duct, sothat to a feeding container can be uniformly heated; a material in the feeding container is heated and sublimated into a gaseous-state material, and then the gaseous-state material is fed to a cascaded system, and at the same time, the air in the box body enters through the air inlet of the air duct; and therefore, the heating cycle of the hot air can be completed. The device of the invention hasthe advantages of simplicity, low manufacturing cost and convenient operation. With the heating and evaporation device adopted, the area of the plant and equipment investment can be saved.

The invention relates to an extraction and separation method of a trace uranium element in a liquid sample and belongs to the technical field of trace analysis sample pretreatment. The method primarily utilizes a mixture of di-iso-amyl pentylphosphonate and trioctylphosphine oxide as an extraction agent, strictly controls a concentration of a nitric acid leaching solution, allows the uranium element to have a higher distribution coefficient and better adsorptive capacity, and therefore, achieves a better extraction and separation effect; and an ammonium carbonate solution with a specific concentration is used as an eluent to allow the uranium element to have a higher recovery rate. The extraction and separation method can achieve concentration of the trace uranium element in the liquid sample simply, conveniently and rapidly and separation of some interference heavy metal ions at the same time, and improves stability and reliability of a determination result of the trace uranium element in the liquid sample.

The invention belongs to the technical field of metal ion detection in mine and environment and particularly relates to an on-line detector for molybdenum concentration in a water solution. The detector is used for detecting the molybdenum concentration in a uranium and molybdenum mine hydrometallurgy process in our country. The detector includes a circuit system and a chemical flow path system. The circuit system is disposed in the upper part of a machine case and includes a power supply, a microcomputer system, a control and driving circuit, a photometric detection circuit, and a signal output circuit; the chemical flow path system is disposed in the lower part of the machine case and includes a peristaltic pump and an electromagnetic valve. The microcomputer system outputs a control signal for driving the peristaltic pump and the electromagnetic valve to work by means of the control and driving circuit; a to-be-tested solution generates a light absorption signal through the photometric detection circuit; the microcomputer system collects the signal and calculates and converts the signal into a light absorbance value; and on the basis of the light absorbance value, the concentration of a to-be-tested substance in the sample is calculated; finally the signal output circuit sends a detection result and an operating state signal to an external device so as to achieve remote monitoring. The on-line detector can satisfy detection demand and long-term monitoring demand in a complex environment such as mine and the like.