The short-circuit flow, which is discharged from the vortex finder without separation, seriously affects the processing efficiency of the hydrocyclone. In this paper, the experimental test and numerical simulation methods are used to study the effect of the vortex finder and feed parameters on the short-circuit flow and separation performance. …
principle and basic design of the solid/liquid hydrocyclone was first patented in Bretney (1891) (US 453,105). As a unit process, cyclones have the highest throughput/size ratio …
The design and optimization of the hydrocyclone inlet are an effective way to improve the overall performance of the hydrocyclone. In this paper, a set of novel hydrocyclones are designed by changing single to multiple inlets and narrowing the inlet width. ... Bretney E. Water purifier [P]:US, 453105. 1891-03-26. Jinyi T, Long N, Tao S …
Designed hydrocyclone separates 40% oil-in-water mixture with 93% total efficiency. ... The first patent dates from the late nineteenth century (Bretney, 1891) and its use has been intensified in the mid 1940s in the mining industry. According to Young et al. (1994), in the 1980s, hydrocyclones were first used to clean oil from offshore ...
Yet as this Volume clearly shows, the hydrocyclone can do so many things and do them well, whether the application is in solid-liquid, liquid-liquid or liquid-gas separation. Similar content being viewed by others. Analysis …
The hydrocyclone is a simple piece of equipment that uses fluid pressure to generate centrifugal force and a flow pattern which can separate particles or droplets from a liquid medium. These particles or droplets must have a sufficiently different density relative to the medium in order to achieve separation.
Hydrocyclone ZWNLUN002 Inaccurate estimations of the cut size by the Rao and Lynch model Despite the fact that the model predicted the trend in cut size with a change in the feed solids concentration really well, it cannot be used to predict the hydrocyclone performance since it makes really large underestimations of the cut size. Different ...
5 Things that cyclones can and cannot do. The hydrocyclone design has been with us since 1891 when E. Bretney patented the first hydrocyclone. Over the years the design of the hydrocyclone has not changed much …
Hydrocyclone separation is based on the generation of centrifugal sedimentation that can reach a maximum of several thousand times the force of gravity, which is similar in magnitude to the centrifugal forces …
The hydrocyclone is a widely used classifier in the mineral-processing industry. It is installed in close circuit between the grinding and conditioning paths for flotation of complex base metal ore. It consists of a cylindrical section at the top connected to a feed chamber for continuous inflow of pulp, which is then expelled through an ...
Based on hydrocyclone separation technology, this paper presents a new near-bit hydrocyclone (NBHC) installed with guide vanes for downhole solid–liquid …
The flow field of a hydrocyclone was investigated using both computational fluid dynamics (CFD) and particle image velocimetry (PIV). A refractive index matching method was employed to improve the precision of the PIV measurements. The CFD results are in good agreement with PIV measurements. Detailed analysis reveals significant …
In the nineteenth century, Bretney [3], patented the first hydrocyclone and it was composed of a cylindrical section, a cone, overflow outlet and underflow outlet. The function of the cylindrical section is to stabilize the fluid flow when the fluid enters the cyclone; the cone, to enhance the centrifugal force which helps in separating the ...
Cyclone research dates back to 1891, when E. Bretney (Bretney, 1891; Jiang, 2010) filed the first hydrocyclone patents in the United States. It was not until 1939 that Driessen (Bradley and Danckwerts, 1965) used a hydrocyclone in a coal mine for coal slurry water clarification, marking the first industrial usage of the device. The exploration ...
The flow behavior in hydrocyclones is quite complex. In this study, the computational fluid dynamics (CFD) method was used to simulate the flow fields inside a hydrocyclone in order to investigate its separation efficiency. In the computational fluid dynamics study of hydrocyclones, the air-core dimension is a key to predicting the mass …
A novel hydrocyclone with internal spiral rib is designed and developed. ... Water purifier later named as hydrocyclone was first patented by Bretney [23]. In a hydrocyclone lighter particles flow toward the inner spiral and collected from the overflow and the coarse or heavy particles move toward the wall of the hydrocyclone separator …
Wang and co-workers9,10 demonstrated that once the diameter ofthevortexfinderexceedsacriticalvalue,theaircorediameter would be larger than that of the underflow ...
Hence, the flow field of the hydrocyclone is generally considered as a multiphase flow system. Hydrocyclones have been used in numerous industries including oil, drilling, metalworking, and mineral processing since 1891 when E. Bretney obtained the first patent for the predecessor of all contemporary hydrocyclones.
Hydrocyclones, otherwise referred to as cyclones, are mechanical separation devices that utilize centripetal or centrifugal forces within a vortex in order to sort particles present within a liquid suspension.
A hydrocyclone is an effective separation device wherein water is mixed with sands. It can be used to classify or filter specific solid and liquid components in a feed stream. ... [14]; the cyclone chamber was patented in the USA in 1891 by Bretney. At the time, the use of the cyclone had been limited to separating particles from the carrier ...
A hydrocyclone is an effective separation device wherein water is mixed with sands. It can be used to classify or filter specific solid and liquid components in a feed stream. This study...
Comminution and classification technologies of iron ore. Aleksandar Jankovic, in Iron Ore (Second Edition), 2022. 8.3.3.1 Hydrocyclone separators. The hydrocyclone, also referred to as cyclone, is a classifying device that utilizes centrifugal force to accelerate the settling rate of slurry particles and separate particles according to size, shape and …
TABLE 1 Geometric proportions of two well-known families of hydroeyclones Hydrocyclone Bradley Rietema D,/Oc Do/De 1/7 0.28 1/5 0.34 L/Dc 5 LJD¢ 1/2 - t/D~ 1/3 0.40 e 9° 20° BradleyandRieternahydroclones 185 TABLE 2 Parameters of Equation (4) according to Medronho (1984) and Antunes and Medronho (1992) Hydrocyclone Bradley Rietema kI …
Bretney (189 1). Enormous works of experimental, theoretical and ... The hydrocyclone is designed to handle high throughputs of a 12" desander but is able to achieve lower cutpoints and efficiency ...
Basis for the first commercial use of hydrocyclone separators for deoiling produced water on offshore platforms. double cone, fine taper.
The first hydrocyclone patent was granted in 1891 for a "water purifier" designed to remove impurities from drinking water, see Figure 2 (Bretney 1891). Figure 2: The "water purifier" invented by Bretney (1891). Following that, most applications of hydrocyclones were in the coal and mining industries.
The performance of a hydrocyclone for 1 L/min of flow rate is analyzed for the first time. ... (Bretney, 1891; Bradley, 1965). The following examples are research cases by experiment. By making various changes to the configuration of the hydrocyclone, Chu et al. researched the effect of these changes on the performance (Chu et al., 2000).
Eugene Bretney, 1891 "Water Purifier", U.S. Patent 453,105 C. A. Petty. Liquid/Liquid Separation 25th Annual Produced Water Seminars 3 ... Photographic Fluid Velocity Measurement in a Hydrocyclone Masters Thesis, McMaster University March 1971 American Iron and Steel Institute
In the nineteenth century, Bretney [3], patented the first hydrocyclone and it was composed of a cylindrical section, a cone, overflow outlet and underflow outlet.
To the best of authors' knowledge, although the first patent on the hydrocyclone is about 128 years old, to date, there are just a few reviews on hydrocyclones (Table 1), and marginal effort has been attempted to comprehensively review and summarize enhanced-separation hydrocyclone technologies developed by …