thickener underflow in miningthickener working details

Improve Clarifier and Thickener Design and Operation

Corrections. In Table I of the July article, "improve Clarifier and Thickener Design and Operation," by Joel Christian (pp. 50-56), the titles Vi and TSS are reversed. The first TSS is 3.1 and the first Vi is 6.045. In the overloaded case on p. 55, the underflow c oncentration should be …

Mining Concentrate Thickener | Red Meters

2021-8-11 · As the slurry moves from the Concentrate Thickener, the Red Meter Toro measures the density of the underflow to validate that the correct concentration has been achieved. DISRUPTION Without the measurement of slurry feed density, there is no method by which to optimize the addition of thickening agents.

Thickeners

2016-6-1 · Figure 18.5 depicts underflow produced by the thickener compared with the relative yield stress of the material. High-rate thickeners produce the lowest density and yield stress (<20 Pa). The highest yield stress underflow is …

Flow visualisation and computational prediction in ...

2003-2-1 · Abstract. Although thickener rakes are essential in the transport of bed material to the underflow, few details of the flow resulting from rake action in thickeners have been published. In this investigation, flow visualisation and velocity measurements in a small-scale thickener rake model were undertaken along with computational modelling in ...

High-rate Thickener | FL

EIMCO and Dorr-Oliver thickeners are available in both bridge-supported and column-supported designs. We offer beam- or truss-type bridges, depending on thickener diameter. In the bridge-supported design, suitable for thickeners up to …

(PDF) THICKENER DESIGN, CONTROL AND DEVELOPMENT

combine in the design, contr ol and operation of a modern thick ener. This paper does not seek to. provide all the answers in thi ckener design and control, but hopes to give the reader a greater ...

The solids concentration distribution in the deep cone ...

2013-2-28 · 1. Pilot Scale Deep Cone Thickener The height of the pilot thickener was 2 m and the diameter was 1.375 m. More details are shown in Fig. 1 and Table 1. Feed is in-jected in a feedwell at the top of the tank. Overflow is collected by a deposition pool. The schematic of the pilot thickener flow cycle is shown in Fig. 2. Fig. 1. Pilot scale deep ...

Changes in underflow solid fraction and yield stress in ...

2021-2-11 · The trouble-free and efficient operation of paste thickeners requires an optimal design and the cooperation of each component. When underflow discharging is suspended, alleviating the vast torque that the remaining solids within the thickeners may place on rakes mainly lies in the circulation unit. The mechanism of this unit was analyzed, and a mathematical model was …

The Application of Thickener in Mining Industry

2021-9-12 · The application of thickener in the mining industry. 1. Dewatering operation of concentrates of red ore minerals such as hematite. For the red ore that is beneficiated by the flotation process, the use of a high-efficiency thickener can obtain a higher underflow concentration and increase the dehydration rate of the concentrate. 2.

Bridge-Supported Mechanisms for Tank Diameters to 50 …

Table 2 Thickener Floor Loading Percent Waste Floor Typical Activated Sludge Loading % Solids in Thickener Feed Lbs/F12/Day Underflow 0% 22 10 25% 15 6 35/50% 10 5 75% 6 3 4 2 BST thickener with basin cover constructed beneath mechanism support bridge

Khumani Iron Ore Mine paste disposal

2012-7-13 · thickener underflow densities ranging from conventional thickening through to paste thickening. The data assumes 30% recovery of water from the tailings dam up to 50% solids by mass in the thickener underflow, decreasing to zero at 65% solids by mass in the thickener underflow. Characterization bench-scale thickener test work commenced in July ...

Thickner Underflow Pump,Centrifugal High Chrome Pumps ...

Thickner Underflow Pumps are the most comprehensive range of Centrifugal Slurry Pumps for use in mining, chemical and general industry applications. It is including Centrifugal Thickner Underflow Pump, Horizontal Thickner Underflow Pump and Heavy Duty Thickner Underflow Pump. They are designed for heavy duty applications such as mill discharge, power sector …

Thickener Torque -Rakes & Drive

2015-8-13 · As the load in the thickener settles to the bed, the Torque on the rake arms will be climbing. Torque is nothing more than a rotary force being applied from the rake arms to the drive shaft. It is the degree of torque that indicates to the operator the load that is in the thickener …

Assessment of on-line rheology as a control tool for ...

In this work, we look at the underflow of a paste thickener used to thicken the tailings from a mine to the desired underflow solids density to enable easy pumping to the reject conveyer that ultimately sends the tailings for disposal. A schematic of the process studied is shown in Figure 1, with the inset on the bottom

Beginners guide to thickeners

2017-6-16 · Beginners guide to thickeners. Thickening is a process where a slurry or solid-liquid mixture is separated to a dense slurry containing most of the solids and an overflow of essentially clear water (or liquor in leaching processes). The driving force for the separation is gravitational, where the differences in phase densities drive the ...

(PDF) Advanced thickener control

The paper details the implementation of a thickener expert control system at Cortez Gold in Nevada using KnowledgeScapeTM expert control software. ... (e.g. underflow density) and fewer ...

Thickener

The thickener was applied at various concentrations (0, 4, 8, or 12 g/l) in the pretreatment bath to determine the effect of cationization on the optimal level of thickener. The concentrations of soda ash and urea in the pre-treatment were 40 and 100 g/l respectively.The fabrics, untreated cotton and cotton cationized with 100 g/l reactant, were printed with the cyan ink at 360 and 720 dpi ...

Thickener mechanism

A thickener mechanism for a settling tank is provided in which separate rake arms with scraper blades sweep an outer and an inner annular area respectively of the tank. Connected with the rake arms for the outer annular area are cone scraper blades which keep the underflow solids in the centre of the tank in motion for ease of withdrawal.

operating principle of thickeners pdf

Working principle of thickener and characteristics in mineral processing plant. Thickener is used in mineral processing plant concentrate and tailings dehydration treatment the 20-30 pulp increased to about 40-70 widely used in metallurgy chemical industry coal non-metallic mineral processing environmental protection and other industries.

Thickeners

2016-6-1 · Figure 18.5 depicts underflow produced by the thickener compared with the relative yield stress of the material. High-rate thickeners produce the lowest density and yield stress (<20 Pa). The highest yield stress underflow is produced by deep-cone thickeners …

Commonly Used Mining Thickener Types and Selection

2020-12-31 · Thickener is a continuous working thickening and clarification equipment, mainly used for the dewatering of concentrates and tailings slurry in wet beneficiation operations, and also widely used for thickening of solid-containing slurry such as coal, steel, chemicals, building materials, water sources, sewage treatment, etc.

The Conventional Thickener

2017-10-30 · Thickener tanks may be constructed either from steel or concrete and may reach diameters of 120 meters and in earthen basins up to 180 meters. Most of the chemical process industries prefer the steel tanks construction since they may be elevated above ground level, allow inspection of the tank''s floor for leakages and bring the underflow slurry ...

How to Operate a Thickener

2016-4-25 · Metallurgical ContentThickening In CyanidationSlime LayersThickener SegregationFollow OrdersA Few Other PointsIsland FormationHow to Operate a Grinding CircuitHow to Operate a Flotation CircuitThickener Operating …

Thickeners – MIP Process Technologies (Pty) Ltd

Thickeners and clarifiers are operating in the minerals processing, chemical water treatment, industrial and effluent treatment throughout the world. In addition to this existing technology, MIP Indusries (Pty) Ltd brings customized and tailor-made process solutions. In our design, we consider not only your process data, but also the long-term ...

Thickener performance optimized with upgrade, service …

2019-7-16 · Thickener performance optimized with upgrade, service and support. Strong partnership, services and support delivers optimised thickener performance, on-time and on-budget. A gold mine was experiencing ongoing problems with …

thickeners & clarifiers

2012-2-13 · tHiCkener design MIP Thickeners and Clarifiers are designed to operate continuously for 24 hours per day. Process selections are based on test work coupled with our vast experience in the field of thickening. It is our belief that a thickener should not be designed on the limit since metallurgical operations are dynamic.

Measuring the density and solids content in the thickener ...

Measuring the solids content in the thickener. The solids content in the underflow is monitored continuously by the radiometric density measurement. The robust device provides reliable measurements with excellent accuracy and reproducibility over many years. The integrated control panel allows for easy and quick start-up.

3 Common Problems and Solutions of Mining Thickeners ...

2021-4-25 · The processing capacity of the thickener should refer to the related parameters of the cyclone, because the overflow amount of the cyclone is the ore supply capacity of the thickener. In addition, the thick underflow in production should not be adjusted too small, so as to avoid ore accumulation and turbidity, causing the rake to "sitting dead ".