CFD simulation of tailings slurry thickening in a gravity thickener
Abstract. In the present study, the thickening process of tailings slurry in a gravity thickener is modelled using Computational Fluid Dynamics (CFD), with a focus on the effects of particle size and feed velocity. A Two-Fluid Model (TFM) is employed to describe the particle-fluid and particle-particle interactions while turbulence is described ...
CFD simulation of tailings slurry thickening in a gravity thickener
The sustainable development is facing a double challenge from the supply of natural resources and environmental capacity [1,2]. Cemented tailings backfill technology is to prepare the toothpaste-like high-concentration cemented tailings slurries by mixing binders with the underflow of the deep-cone thickener [3–5], and then to transport the …
Dynamic modeling and simulation of tailing thickener units …
Section snippets Model for a clarifier-thickeners fed by suspensions with time-dependent settling velocity. Bürger et al. (2005) considers a continuously operated axisymmetric clarifier-thickener with varying cross-section, like the one shown in Fig. 1, with a volumetric overflow or effluent rate Q e ⩾ 0, a volumetric discharge or underflow rate Q …
Real-time Thickener Optimization
Decision Intelligence for the Metals and Materials Value Chain. Real-time Thickener Optimization: How We are Driving Process Efficiency, Stability and Water Recovery. …
Numerical simulation of flocculation and settling behavior
Rapid dewatering and thickening of whole-tailings with ultrafine particles is one of the most important processes for the whole-tailings paste preparation. Deep-cone thickener, a kind of such process for the flocculation and settling of whole-tailings, is particularly necessary to study. However, there exist many problems in observing the …
Most common problems in thickener operations …
Figure 1. Conventional thickener. Depending on the configuration of the plant, the type of mineral and the thickener technology, the recovery of water can vary between 65% to 95% of the process water, as shown in …
Westech
WesTech Engineering has taken the next step in advancing thickener technology with our Thickener Optimization Package (TOP™). The TOP thickener design approach adds ten innovative features to the thickener to provide a better process solution. Most popular related searches. thickener optimization;
Thickener optimization to reduce your production costs
Our solution. For the best outcome in the thickening process, Endress+Hauser offers an integrated package that optimizes concentrator efficiency. The recommended combination of the main instruments (Prosonic T FMU30, Promass F 200, Cerabar M PMC51, Promag 55S, Liquiline CM44x, Turbimax CUS71D, Orbipac CPF81D, Indumax CLS50D and …
Techniques and methodologies for improving …
A number of Computational Fluid Dynamics (CFD) models have been developed to predict likely full-scale thickener performance under various process conditions, based upon a knowledge of...
Thickener technology for mineral processing – CSIROpedia
Most of the world's minerals pass through solid-liquid separation in a thickener at some point in their processing. Thickeners are used to either: concentrate mineral slurries prior to extraction of commodities. create a liquid free of solids for subsequent extraction of dissolved metals. wash contaminants from mineral solids.
Optimization of Design and Performance of Solid‐Liquid …
Chemical Engineering & Technology. Volume 38, Issue 2 p. 319-326. ... combined with an optimization algorithm and supported by a computational fluid dynamics complementary study. ... i.e., low Euler number, with a small underflow-to-throughput ratio and can be used as a thickener hydrocyclone. Citing Literature. Volume 38, Issue 2. …
Multi-objective optimization of some process parameters of …
Highlights The multi-objective optimization of a lab-scale thickener process was accomplished. The analytical data was generated by using Taguchi array design with four parameters. Optimal levels of process parameters were identified using grey relational analysis. The contribution of each parameter was weighted according to its importance.
Thickener Optimization Package
Thickener Optimization Package The geometry of the TOP™ dewatering cham-ber provides additional solids residence time and a larger inventory for compacted solids. Inclined scrapers are used for further dewater-ing within the chamber. Dewatering Chamber WesTech's approach to elevated tank design is unique. An algorithm has been developed
Optimization of Design and Performance of Solid-Liquid
Request PDF | Optimization of Design and Performance of Solid-Liquid Separators: A Thickener Hydrocyclone | Studies on hydrocyclones have evolved over recent years and various configurations of ...
Optimization of multi-stage thickening of biomass in a …
These technologies differ in several performance criteria, among them the solids concentration that can be achieved and the energy demand required for the thickening process. ... The biomass was directly pumped from the settler to a first thickener. In some of the optimization experiments the purge from the first thickener …
Thickeners – MIP Process Technologies (Pty) Ltd
Thickener development and general history. Sedimentation technology was originally developed in the mining industry. Prior to the development of the continuous thickener, batch gravitational settling was employed. In such batch operations, dilute feed was pumped into a tank continuously until a clear overflow was no longer obtained.
Disc Thickener
AKSE is a hydrostatic disc thickener to thicken different suspensions which we offer in two types. The AKSE F can be used for thickening of fibrous suspensions such as fibre stock from chemical and mechanical pulp, and waste paper as well as fine rejects. The AKSE S is used for thickening of sludge and fine reject by adding a flocculant.
Composition, Properties, and Structure of Low-Temperature …
The dependence of the colloidal stability, effective viscosity, penetration, and yield stress of low-temperature polymeric greases on the composition and characteristics of the dispersion medium was investigated. Various types of low-viscosity oil with known fractional and group composition were used as base oils. The effect of the concentration …
Optimization study of thickener hydrocyclones
Abstract. The hydrocyclone is a separation device that is widely used in the mineral industry for various applications, including classification, thickening, and …
Liquid–Solid Separation in Gold Processing
The approach in this chapter is to minimize details and outline the current state of technologies, including recent developments that may be of interest. ... performance trends, such as underflow density, overflow clarity, or throughput. An example of this type of plant-scale thickener optimization was discussed by Shaw and …
Hycor® ThickTech™
The Hycor ® ThickTech™ Rotary Drum Thickener (RDT) is the industry leading sludge thickener. Its performance is unmatched, with sludge volume reduction of 90% and a 98% capture rate. In addition, this superior performance is achieved with very low amounts of polymer. The RDT system is quite compact and requires less floor space than other ...
Beginners guide to thickeners
WesTech Engineering has taken the next step in advanc-ing thickener technology with our Thickener Optimization Package (TOP). The TOP thickener design approach adds …
Fact Sheet: Centrifuge Thickening and Dewatering | US EPA
Centrifugal thickening and dewatering of sewage sludge is a high speed process that uses the force from rapid rotation of a cylindrical bowl to separate wastewater solids from liquid to produce a non-liquid material referred to as "cake.". Dewatering wastewater solids reduces the volume of residuals, improves operation, and reduces …
Optimization study of thickener hydrocyclones
Abstract. The hydrocyclone is a separation device that is widely used in the mineral industry for various applications, including classification, thickening, and desliming. The design of this device differs depending on the application. Thus, for the use of hydrocyclone in thickening operations, an appropriate geometry is required.
Study on the optimization of silicone copolymer synthesis …
An enhanced yield trend was observed with increasing pressure and a temperature range of 35–55 °C. The application of CO 2 fracturing technology can help to reduce the greenhouse effect and the environmental pollution caused by fluoropolymers as thickeners when silicone polymer is deployed as a thickener for CO 2.
An intelligent control strategy for thickening process
The thickener model was created by the Model-Training Module using the data from the historical database. The control parameters were calculated by the Optimized Module and sent back to the control system. The designed modeling and optimization system takes into account the large number of data, and some modules also require …
Beginners guide to thickeners
Many thickener installations operate with water recovery below design limits largely through conservative control and low prioritization of thickener optimization. The operation of the thickener must accommodate fluctuations – control for disturbances – in the process feed stream to deliver a clear overflow and thickened underflow.
Thickener Optimization Spotlight | Mining Industry …
Thickener Optimization Spotlight | Mining Industry Software. Discover your Thickener's Minimum Settling Rate with our Hematite '21 release. Hematite is the very latest release …
Thickener technology publications – CSIROpedia
Usher SP, Scales PJ, 2005, 'Steady state thickener modelling from the compressive yield stress and hindered settling function', Chemical Engineering J., 111: 253-261. Hulston J, de Kretser RG, Scales PJ, 2004, 'Effect of temperature on the dewaterability of hematite suspensions', Int. J. Miner. Process, 73: 269-279.
Flocculation, dewatering and sedimentation behaviour of …
The optimization of DCT can be carried out from the following aspects: feed ratio and composition (whether to add coarse aggregate and its ratio, type and dosage of flocculant, etc.), optimization of thickener structural parameters (height to diameter ratio, whether to add rake frame, parameter setting of feed well, etc.), fault diagnosis and ...
