debottlenecking of thickeners in a changing environment - Outotec

Thickeners, like most processing technology utilized in minerals processing, are fixed geometry equipment designed for a specific ... Key words. Thickener, modernization, dewatering, upgrade, tailings thickening, concentrate thickening, feedwell ..... automation has demonstrated remarkable improvements in thickener...

Characterization and flocculation studies of fine coal tailings

Thickeners are the most commonly used equipment for dewatering of slurry; the design considerations are based on the settling rates of the slowest settling particles and conditions for minimum disturbance of the medium (water) through which the solid particles are allowed to settle. Characterization and flocculation studies...

A landmark paper on tailings dams, entitled Design and ... - InfoMine

tailings dam design projects. Closure strategies to prevent long-term geochemical impact to receiving environments are often the driving factors in design of tailings impoundments. The other significant trend over the last 30 years has been the considerable number of highly publicised failures of tailings dams that have...

A new approach for obtaining settling velocity in a thickener using ...

hazardous minerals in the waste water of thickeners, recycling is an inseparable part of the mineral processing, which prevents environmental impacts [1-3]. .... particles; and 3- to facilitate the escape of liquid from the settling bed of solids [29]. 2.2. Experimental design. The settling tests were carried out on the samples.

Current and New Water Management Solutions at ... - GTK - Projects

Based on literature sources, water management has not been commonly integrated in the design of the enrichment ... instead of the long circuit provided by a conventional tailings pond system, will influence the process ... process water of a certain quality, but these processes do not remove remarkable amounts of water.

Flocculation and Dewatering of Mature Fine Tailings Using ...

May 17, 2017 ... (21-24) As a result, particles in tailings suspension are rapidly flocculated and settled due to those strong hydrophobic interactions. Li et al. studied the adhesion force between kaolin particles and polyNIPAm by atomic force microscopy. The results showed that the adhesion force increased from almost zero...

A review of binders used in cemented paste tailings for underground ...

Oct 24, 2013 ... the impetus for comprehensive engineering design and effective management ... slurries of tailings by dewatering it with conventional thickening or filtering. ..... This effect is inti- mately related to the sulphate concentration, curing time and the amount and chemical composition of the cement. Sulphates can.

123835019-Theory-and-application-of-thickener-design.pdf - Scribd

A case study shows the effect of various fine coal desXinhai options on a tailings thickener underflow density and pumping requirements. 0 the process is one-dimensional and so there is no radial variation in concentration for any horizontal layer Cl the slurry can be treated as a continuum, with a continuous liquid and solid...

Tailings Dam Performance - DiVA portal

Nov 27, 2015 ... In the design of tailings dams, a certain value of the factor of safety for slopes of the dams is normally striven for to ..... influence on dam performance is the conventional methodology of sampling on site and .... thickening technology is applied and works successfully, it does not automatically mean that the.

Assessment of on-line rheology as a control tool for thickened tails

the mining and mineral processing operations. While remarkable improvement in disposal techniques have been achieved, inefficiencies still exist in the operation of these facilities. Tailing spills, dam failures, seepage, un-rehabilitated sites, and cases of direct discharge into waterways can result in severe and long-term.

R. Verdugo CMGI Ltda., Chile J. Echevarría Codelco, Chile G ...

In summary, the high seismic activity of Chile requires that the geotechnical design of tailings deposits ... 1971 (Codelco Chile) Chuquicamata have had a remarkable growth throughout time, involving a large .... initial tailings slurry is reduced as much as possible, prior to discharge, by means of high-density thickeners,.

SMALL MOLECULE ASSOCIATIVE CO2 THICKENERS FOR ...

May 3, 2016 ... effects that promote linear supramolecular structures. CO2-phobic groups are also included to promote self-assembly. This work primarily focuses on molecular designs based on highly CO2-. SMALL MOLECULE ASSOCIATIVE CO2 THICKENERS FOR IMPROVED. MOBILITY CONTROL. Jason Jiwoo Lee...

Xinhai: Cases of Non-metal Mineral Processing Project - Xinhai

Jul 17, 2017 ... In order to protect the graphite flake, Xinhai adopted “rough grinding and discarding tailings, multi-stage grinding and multi-stage processing, middling partial concentrated returning” process, which obtained good effect and high quality graphite concentrates. Relying on advanced design concept, Xinhai...

Electromagnetic Iron Remover, Principle of Electromagnetic Iron ...

Iron mover is suitable for thick materials because of the reasonable magnetic circuit design, magnetic field intensity and large magnetic penetration depth. ... and strong suction, which can resist wind erosion, has good abrasion resistance and long service life, reduce the cost, getting remarkable effect in the application.

Iron - Yantai Jinpeng Mining equipment, ore dressing process ...

Before, the flotation and roasting-magnetic separating process are mainly used. For the past few years, due to the application of strong magnetic separator, undersize sieve etc new equipment and gravity separation equipment, reverse flotation process, hematite (week magnetic ore) dressing have got remarkable effect.

Characterisation of a thickened tailings beach - Australian Centre for ...

The deposited tailings will achieve a relatively high in situ density under the effects of evaporative drying. ... thickener operation and management of deposition have resulted in a higher stack, and steeper slopes. From Fig 4 it is .... The remarkable uniformity of the results, with only the two probes from close to the bottom of.

Performance optimization of paste thickening

is their inability to handle the slow response dynamics and cross action between controlled variables. This .... High levels of rake torque are required in modern thickeners due to design and operational improvements .... The model above was parameterized to match the presumed dynamics of the tailings paste thickener.

Paste Thickener Design to Achieve Downstream Requirements

Jul 11, 2016 ... Compared to conventional thickening that produces settling slurry, paste tailings technology requires an approach that integrates the thickening, pumping, ... Response of the paste rheology (changes in viscosity and yield stress to shear) as a result of pumping and pipe flow must be factored into design.

Tailings Central Thickened Discharge; challenges ... - SRK Consulting

Aug 2, 2016 ... significantly more water to manage and reduced storage capacity compared to that designed. The paper also proposes key areas to focus on to mitigate against and lessen the impact of significant variations in the thickening process and tailings product sent to the TSF. Introduction. Owners and designers...

PRE Post:zirconium extraction by spiral concentrators
NEXT Post:sand iron ore dewatering spiral classifier