In the 1970s and 1980s, machines known as High Capacity or High Rate Thickeners were introduced in the mining industry. The distinguish feature of these equipment was that the feed was injected into the sediment bed. EIMCO HI-CAP Thickener (Webpage)High Capacity Thickeners. Enviro-Clear High Capacity CT (Web page)
Description. The High-Rate thickeners became popular in the mid 1980's and are relatively newcomers to the sedimentation line of equipment. As already discussed previously Thickeners are a major component in a plant layout and occupy large spaces which may be saved by introducing high-rate machines. Furthermore, they are normally positioned far away from the center of the plant so to allow
Thickener design configuration s usually consider the high rate or paste thickener options, with a tradeoff between capital cost and process performance. Design s that assume a lower settling flux
Why McLanahan High-Rate Thickeners. Integration of McLanahan High-Rate Thickeners into a plant is simple. Control systems take care of most of the operation; however, McLanahan can train operators in the preparation and use of flocculants, as well as general Thickener operation
Part B: Operation and Maintenance 5 - 3 CHAPTER 5: SLUDGE TREATMENT FACILITIES 5.2.1.1 Process Control Greater attention to the thickener is required when thickening waste activated sludge because it has a large surface area per unit mass, resulting in low settling rates
High Rate Thickeners Perhaps the most significant design optimisation effort in thickening in the last twenty years has been in developing ways to more effectively use the horizontal cross sectional area of the thickener. The introduction of polymeric flocculants gave an impetus to development of High Rate Thickeners
Jun 02, 2017 Various operating points are shown in Figure 18 to illustrate concepts of operation of the thickener. Table 1 is a summary of the operating conditions at each of the points illustrated. For this example, the following relationships apply: Feed rate x unit area = 40 m . Underflow rate x underflow conc./1000 = feed rate
HiFlo™ High-rate Thickeners Overview: WesTech HiFlo™ high-rate thickeners are used in many types of process circuits to separate liquids and solids at very high rates. They are highly effective in coal refuse thickening, gold recovery, CCD circuits, copper leaching, molybdenum processing and other mining and chemical flowsheets
selection of the solids flux that will limit the operation of the thickener in other words, the maximum solids loading. The thickener given here will operate successfully as long as the rate of solids applied to the top does not exceed the rate at which solids are transmitted to the bottom. There are two ways the solids can move to the bottom: 1
Thickener solids loading rates vary with the type of sludge. Some typical solids loading rates are given below in Table 12-2. These values shall be used for design unless other acceptable data are submitted. For loading rates of other type sludges, refer to Table 5.2 of the EPA Process Design Manual-Sludge Treatment and Disposal. Table 12-2
Thickener operations work to recover clear water and to generate thickened tailings. In the thickener, the solids separate from the water by means of decantation, and they descend to the bottom of the ... the implementation of modern high rate thickeners, which achieve higher settling rates and work
The control parameters used to together with multivariable and decoupling techniques in a maintain stable operation in high rate thickeners are gold plant. The control system was maintaining a higher underflow solids density, underflow withdrawal rate, 87 88 L. Bergh et al. / IFAC-PapersOnLine 48-17 (2015) 086–091 Fig.2 Thickener P&ID
Optimised for performance and operating cost. High-rate Thickeners are designed to provide roughly 12 times the throughput of conventional machines of similar size. The key features for high-capacity thickeners are the feedwell design and the feed slurry dilution method. Our patented E-Volute™ feedwell offers Computational Fluid Dynamics (CFD
High Rate Thickeners. Perhaps the most significant design optimisation effort in thickening in the last twenty years has been in developing ways to more effectively use the horizontal cross sectional area of the thickener. The introduction of polymeric flocculants gave an impetus to development of High Rate Thickeners
Are You Looking for A Consultant?
Office Add: High and New Technology Industrial Development Zone, Zhengzhou, China
Email: [email protected]
Chat Online
Leave Message