Industrial Flotation Process Modelling : Rtd Measurement by Radioactive Tracer Technique
نویسندگان
چکیده
The residence time of liquid and solid was determined in flotation banks of mechanical cells and flotation columns at Salvador Division, Codelco-Chile. The estimation was developed from residence time distribution (RTD) measurements using radioactive tracers. Results allowed the estimation of effective pulp volumes in flotation banks and columns. It was found that industrial flotation banks are properly modeled by a number of perfect mixers in series equivalent to the number of cells in the bank. However, large size flotation columns are closer to a perfect mixer. Measurement of RTD also allowed the identification of operating control problems such as solid sedimentation and excessive tailing valves manipulation. Copyright © 2002 IFAC
منابع مشابه
Flotation stabilization and optimization
It is possible to obtain good performance from a flotation plant but it has proved difficult to maintain such performance. Recovery rates on a flotation plant can be around 90% and often lower, making flotation one of the least efficient processes in the concentration path. Hence, over the last few decades much research and development has gone into the stabilization and optimization of flotati...
متن کاملA new methodology for measurement of sludge residence time distribution in a paddle dryer using X-ray fluorescence analysis.
Drying is a necessary step before sewage sludge energetic valorization. Paddle dryers allow working with such a complex material. However, little is known about sludge flow in this kind of processes. This study intends to set up an original methodology for sludge residence time distribution (RTD) measurement in a continuous paddle dryer, based on the detection of mineral tracers by X-ray fluore...
متن کامل“Dry Flotation”: A Novel Electrostatic Separation by Modifying Particle Surface with Surfactant and Electrolyte
Electrostatic and/or high tension separation has been used for the separation of rare metal bearing minerals, foods, industrial wastes, and so on. Since the separation is achieved by the difference mainly in surface conductivity of materials, the efficiency in humid circumstances is very low and the applicability is considerably limited. We applied the following two-stages pretreatment techniqu...
متن کاملIndustrial Wastewater, Recycle and Reuse, Using Hybrid Process
Industrial wastewater contains a lot of pollutants and therefore needs special treatment processes. The treatment process may contain mechanical, biological, chemical, physical and physiochemical such as Coagulation – Flocculation process. The goal of this experimental work was to investigate the effects of coagulationflocculation and dissolved air flotation as a hybrid process of industrial wa...
متن کاملCalibration curves for on-line leakage detection using radiotracer injection method
One of the most important requirements for industrial pipelines is the leakage detection. In this paper, detection of leak and determination of its amount using radioactive tracer injection method has been simulated by Monte Carlo MCNP code. The detector array included two NaI (Tl) detectors which were located before and after the considered position, measure emitted gamma from radioactive trac...
متن کامل