process of continuous sedimentation. It is employed mainly in design calculations to determine the required thickener area, the most important design parameter, and ultimately the maximum steady state underflow concentration that is possible for a given solids throughput. In addition, the capital cost ofa thickener will
Design Procedure The thickener area is also required for this calculation. Guess the thickener area for the first iteration. Several iterations of area may be required to achieve a practical thickener size and pumping rate. For a circular thickener with a 15.24 m (50 f t) dia.: A= Pi r 2 = 182.4 m 2 (7)
The authors review the literature and discuss the application of methods to the design of thickeners for ilocculated metallurgical pulps. The use and evaluation of flocculents is described. Experimental data show that design based upon oratory settling data is acceptable. The economic aspect of design is also discussed. INTRODUCTION For many years there has been
THICKENER DESIGN A continuous thickener is to be designed to deal with the effluent from the last question. It will treat 1000 m3 per day of suspension fed at 3% v/v solids concentration and is to discharge underflow at 13.8% v/v solids. Use the settling curve and the following relation: CHA CHA00 11ρρss= to complete the following table.
Most thickener design is based on a combination of batch and continuous bench-top testing. The f irst step is typically the small scale “j ar test”, where a slurry is allowed to settle over
Aug 08, 2018· In very simple words, a thickener is a machine that separates liquid from solids. It is defined as a method of continuous dewatering of a dilute pulp, wherein a regular discharge of a thick pulp
Jan 01, 2016· 14.4. Thickener Design-Continuous Thickeners. For designing continuous thickeners, the three most important parameters that need to be established are 1. cross sectional area of the tank, 2. depth of thickened layer, 3. depth of the clarifying zone.
Jan 01, 1993· DESIGN OF CONTINUOUS THICKENERS Consider a suspension with an initial volume frac- tion of solids ~ In Fig. 1(a) and (b), a possible location and variation of the discontinuity heights in batch testing and in continuous thickeners can be observed. The significance of some variables can be 2039 2040 R. Fot rr and F. Ruiz Fig. 1.
THICKENER DESIGN A continuous thickener is to be designed to deal with the effluent from the last question. It will treat 1000 m3 per day of suspension fed at 3% v/v solids concentration and is to discharge underflow at 13.8% v/v solids. Use the settling curve and the following relation:
PDF On Apr 18, 2004, Fernando Concha published SOFTWARE FOR THE DESIGN AND SIMULATION OF BATCH AND CONTINUOUS THICKENERS Find, read and cite all the research you need on ResearchGate
Improved design and performance of continuous thickeners should be achieved through a better understanding of the sludge transport processes involved and the variability of sludge thickenability. A software package called PHOENICS was used to model the three-dimensional flow of sludge in the transport zone of a 20m diameter thickener.
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Likewise, thickeners are often used for storage to facilitate the continuous feeding of downstream filters or centrifuges. Historically thickeners were introduced to the mining industry in 1905 when the beneficiation of ores by froth flotation was invented in Australia.
Continuous thickening by an operation called sedimentation is the separation of suspended solid particles They differ from conventional thickeners in feed well design, size and control. Unlike conventional thickeners, high rate thickeners must use flocculants. The basic design
continuous types of thickener fmsbarodain equations on continuous thickeners- continuous types of thickener ,Simulation of batch and continuous thickeners The design of continuous thickeners from batch tests is considered on the basis of numerical simulations corresponding to both operations The method proposed i Published in How many.
The Design and Commissioning of a Scale Thickener Test Laboratory for Measurement and Control Testing, Paste 2007 Conference, AGC Perth. Scales, P, Crust, A, and Usher,S, 2016, Thickener Modelling from oratory experiments to full-scale prediction of what comes out the bottom and how fast,Proceedings of the 18th International Seminar on