tailings thickeners

McLanahan Thickeners

Thickeners — or Clarifiers, depending on the application — can be used to recover immediately reusable process water, as well as extract fines and other materials. Thickeners are used by mineral and aggregate producers, as well as by environmental contractors in

Tailings Management With Paste Thickening

Thickened tailings are a suspension of solids that are relatively non-settling and non- segregating and that have a higher concentration and viscosity than those of conventional tailings. Common applications

Thickeners or thickener plants – optimizing the

2017年12月19日 Dec 19, 2017 Thickeners or thickener plants – optimizing the performance and cost of thickened tailings Mine tailings have been a hot topic in recent times as a result of both the ongoing

Tailingsfo Thickened Tailings Storage - A discussion

Thickened tailings, as the name suggests, involves the mechanical process of dewatering low solids concentrated slurry (Fourie 2003). This is normally achieved by using compression (or high rate)

The geomechanics of thickened and paste tailings

In the context of thickened tailings, it is important to realise that all of the unhindered settling phase takes place in the thickener. The thickener underflow is already at the hindered

Paste and thickened tailings water benefits – case studies

Paste and Thickened Tailings, (PTT) technology has provided many benefits for tailings management. Using thickeners to produce this non-Newtonian suspension can be an

Canadian Experience in the Application of Paste and Thickened

thickened tailings slurry by combining thickener underflow with a portion that had been filtered. This initiative enabled the conversion of existing tailings ponds into a thickened

Commissioning and Operational Experience of a Thickened Tailing ...

The tailings product is characterized by an average particle size of about 30 µm with a maximum of about 500 µm and about 40 % passing 20 µm. Solids density about 3000

Most common problems in thickener operations

We have discussed in early articles the strategies to optimize water consumption (part 1 and part 2) and learned the vital role that thickeners play in the optimization of the water recovery process. In this blog, we

Thickener Optimisation in mineral processing

2021年4月7日 Thickener Optimisation in mineral processing. Integrated online monitoring simplifies the convoluted process of monitoring data, which is central to precise process control in thickeners, in key

(PDF) THICKENER DESIGN, CONTROL AND

2019年1月4日 The purpose of this paper is to present a generalised understanding of the various inputs that combine in the design, control and operation of a modern thickener. This paper does not seek to ...

Thickened tailings – a water and energy consumption perspective

Concentrate tailings thickener dry tonnage (maximum) 212.6 t/h Thickener feed solids concentration 11.2%m 3/h 3/h 2.3 Pumping desktop study process conditions This high-level study considered the basic layout shown in Figure 3, pumping thickened tailings 5 km from the process plant to the tailings storage facility. Plant tailings Tailings ...

Tailings - Wikipedia

In mining, tailings or tails are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are different from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.. The extraction of minerals from

Thickeners versus centrifuges – a coal tailings technical comparison

tailings thickeners to be sized on the rise rate of released water. The solids settling velocity has to be greater than the rise rate, or else the solid liquid separation will not occur. Clarifiers, which focus on the overflow liquid clarity, are always rise rate limited, however, thickeners, which focus on the underflow

Theory and Application of Thickener Design

desliming options on a tailings thickener underflow density and pumping requirements. G. = VsC I =Vp2 GF]I =Vs2 III L:J x::J iI" III 12 Gu 0 VI ill (1) BHP Central Research Laboratories, Vale St., Shortland, N.S.W. 2287, Australia The second important velocity is the upward velocity of propagation ofeach concentration in the sediment. This ...

Settling, consolidation and shear strength behaviour of coal tailings

2020年11月1日 3. Methodology3.1. Settling test. Slurry settling tests were conducted in graduated glass cylinders of 1 L capacities at a height of 34 cm and an internal cross-sectional area of 29.4 cm 2.Pulverised tailings dried at 60 °C were mixed with process water to achieve a thickened solids concentration of 25% by mass (i.e. the typical

Paste Thickeners

paste thickeners operate in higher solids concentrations within a yield stress range. This yield stress range produces the benefits of non-Newtonian suspensions for surface stacking, CCD, and backfill systems. Suspensions in the lower portion of this yield stress range are often referred to as “thickened tailings” and the higher

Treatment of coal tailings

2013年1月1日 Most thickeners operate with all three regimes present – certainly in any high rate thickener where feed dilution is used. One of the regimes will be the ‘rate determining step’ and this, together with the requirements of the process performance, will be the factor that determines the size and design of the equipment. 16.2.2.

Tailings filtration: risk reduction through understanding and

RG de Kretser Acclarium Tailings and Solid-Liquid Separation Consulting, Australia Abstract In the face of recent high-profile tailings dam failures there has been an increased focus on the consideration of tailings filtration and dry stacking systems as an alternative to conventional or thickened discharge-based tailings management systems.

Thickeners — Types, Working Principle Applications - Medium

2018年8月8日 The thickeners can be classified into two types depending on location of rake driving mechanism. They are known as either Centrally driven or Peripherally driven. Further, under centrally driven ...

Sustainable Management of Thickened Tailings in

2022年8月31日 The “Thickened Tailings Disposal” (TTD) technology produces a high density mine waste that allows for the storage of this material without the need to manage large slurry tailings storage

Conventional or High Capacity Thickeners - 911 Metallurgist

thickeners and staying away from the high capacity CONVENTIONAL OR HIGH CAPACITY TH *J.z. Lul, I WorleyParsons Suite 120, 50 Edmonton, Alberta ( *Corresponding author: je ... ndle iron ore tailings from a desliming process. The in Table 1 ed rate is 15200 m3/h containing 4095 t/h solids. A was selected by a Brazilian consulting finn.

Thickeners or thickener plants – optimizing the performance and

2017年12月19日 Thickeners are recognized as one of the more cost-effective technologies for recovering water from tailings streams. Significant energy savings can be achieved by maximizing the recovery of water close to the mill. In addition, a higher density of tailings deposited in the dam tends to reduce the footprint and produce a more stable

Dewatering: Thickening, Filtering, CCD, Water Treatment Tailings

To participate in the 911Metallurgist Forums, be sure to JOIN LOGIN; Use Add New Topic to ask a New Question/Discussion about Thickening, Filtering or Tailings and Water.; OR Select a Topic that Interests you.; Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent). Using Add Reply allows you to Attach Images or PDF

Improving flocculation and dewatering performance of iron tailings ...

2019年10月1日 The chemical and mineralogical compositions of the tailings thickeners feed are shown in Table 2, Table 3, respectively.The chemical analysis shows that the most important components are Fe 2 O 3, SiO 2, Al 2 O 3, CaO, MgO with a negligible amount of other oxides.The mineralogical analysis shows that the major iron-bearing minerals are

(PDF) Dewatering of Copper Flotation Tailings: Effect of Feed

2018年7月19日 Abstract and Figures. Aqueous slurries’ dewatering using gravity-driven thickeners is an essential unit operation in mineral processing. Thickener feed dilution is often used for enhanced ...

Introduction to Cyclones - AusIMM

the tailings dam wall. Again, the cyclone underflow is the required product, and the client usually wants the maximum tonnage split to the underflow. Typical Applications: Building tailings dams, Reinforcing dam walls. Location: Gold, Platinum, Base metals, Chrome, Minerals tailings.

Commissioning and Operational Experience of a Thickened

capacities were 115 and 275 tph (tons per hour) for the 18 m and 24 m thickeners, respectively, with solids flux rates of 0.45 and 0.6 ton/m 2h. Both are planned for common use for 390 tph within a few years. The tailings product is characterized by an average particle size of about 30 µm with a maximum of about 500 µm and about 40 % passing ...