hi density tailings thickener

thickeners & clarifiers - MIP Process Corp

• High Density thickeners (deeper sidewall and more robust drive) • Paste thickeners • Ultra high rate thickeners Our units are available in a variety of sizes starting from 3ft diameter pilot scale to 300ft diameter. We have standard "off the shelf" designs available. Thickener tanks, rakes and feedwell's are custom designed,

Tailings.info Laboratory and Pilot Plant Testing Programmes

Pilot Thickening Trials: Limit Testing – Onsite pilot thickener trials using a truck mounted or small scale thickener (typically up to 5 tonnes per day) operating for a short period of time, primarily to determine limitations of thickening an existing tailings feed. These styles of trials are driven by thickener vendors to adopt high rate, high compression or paste thickening technology.

WesTech - Thickeners - HiDensity™ Paste Thickener by ...

The HiDensity™ Thickener offers the advantages of paste and thickened tailings for very large tonnages. Water savings and tailings deposition can be accomplished with fewer tanks and at a lower capital cost than with the equivalent number of Deep Bed™ paste thickeners.

Deep Bed™ Paste Thickeners - westech-inc.com

The WesTech Deep Bed Paste Thickener can thicken a tailings stream to non-settling paste at solids concentrations approaching that of a filter cake. Design characteristics of the Deep Bed™ result in maximum water recovery, maximum underflow density, and paste with minimal slump. An extra heavy-duty high torque drive powers the raking ...

Application of the FL Deep Cone Technology to the ...

Jan 01, 2016· High density thickeners can typically achieve 5 â€" 10 wt% higher underflow densities compared with a high rate thickener, achieving densities that can still be moved with centrifugal pumps and pumped to the tailings impoundment without positive displacement pumps.

Uses and Benefits of Flow Measurement in the Operation of ...

Figure 2: Entrained air measurement used to correct density measurement errors Thickener operations Thickener operations work to recover clear water and to generate thickened tailings. In the thickener, the solids separate from the water by means of decantation, and they descend to the bottom of the tank.

KROHNE successfully applies non-radiometric density ...

Sep 21, 2011· Thickener underflow density measurement allows optimized tailings disposal schemes, minimized tailings areas and regulatory compliance OPTIMASS 7300 installed in tailings thickener underflow line KROHNE successfully applies an OPTIMASS Coriolis mass flowmeter to a tailings thickener underflow line to provide a non-radiometric density solution ...

Non-radiometric density measurement of tailings thickener ...

An efficient tailings disposal facility is highly dependent on a reliable thickener underflow density measurement. Only if the required underflow density is obtained can the rate of underflow withdrawal be efficiently regulated and the amount of water in the underflow is kept as low as is practical.

Treatment of coal tailings - ScienceDirect

Jan 01, 2013· The necessity to dewater tailings beyond the consistency of thickener underflow usually arises when environmental legislation, or lack of available space, dictates that the tailings must be discharged as a high solids waste. Occasionally, if insufficient instantaneous make-up water is available, or if operating in a sub-zero temperature climate ...

Mining Tailings Process Mineral Thickener Underflow ...

Aug 27, 2014· the mining industry both locally and abroad, driven by environmental and . thickened tailings. High density tailings. Paste tailings. Cake. PD pumps. Centrifugal pumps. Filters . the density and rheology of the thickener underflow within a fairly narrow operating range. . new mineral processing plants will be controlled by a.

High-Density Thickeners | McLanahan

High-Density Thickeners can be considered an intermediate case between High-Rate Thickeners and Paste Thickeners. They are commonly characterized by: Having a higher sidewall tank (to provide enhanced compression effects) A steeper floor slope …

High-density thickening for large production rates: main ...

technology was observed with the development and application of high-density tailings thickening technologies being applied. High-density thickening technology commenced its development focusing on small operations of no more than 2,000 tpd of production and quickly grew, thanks to its positive results. There are several high-density thickening ...

Tailings Management Systems | Westpro Machinery

Westpro Machinery's solution is a combination of a High Capacity Thickener and a Backfill plant to discharge tailings and backfill to underground stopes. Westpro Paste Backfill plant is able to dewater 7000 t/d and produce paste backfills up to 85% solids. Solution # 3 would be used with either Solution # 1 or Solution # 2 when backfill ...

DENSITY IN THE THICKENING PROCESS WHITEPAPER

force for the thickening process. Thickening by sedimentation is applied in the mineral processing industry for product and tailings streams. For tailings, water recovery is required and underflow will be targeted, while in concentrate applications the overflow measurement is essential. Figure 1: Example of measurement locations at the thickener

TAILINGS DISPOSAL: AN APPROACH TO OPTIMIZE WATER …

High-density tailings disposal The high-density tailings disposal system is shown in Figure 4. The thickening requirements include a single 17 m diameter paste thickener and a flocculant make-up and dosing plant capable of dosing at a rate of 50 g/t. Thickened tailings is transported to the TSF at a flow rate of 111 m3/h and is deposited by

The high density thickened discharge tailings storage ...

The high iron content of the tailings causes the particle specific gravity to be 3.4 to 3.6. 2.2 Particle size distribution Figure 2 shows typical particle size distributions for the tailings measured using a sieve and hydrometer. From Figure 2 it is evident that: • 60% of the tailings is finer than 75 microns.

Tailings management Sustainable and complete dewatering ...

May 03, 2019· Our thickened tailings solution uses a high-rate or high-density thickener, resulting in 50 to 65% solids, to recover water in tailings prior to disposal. With this option, you will recover higher volumes of water and reduce losses to seepage and evaporation. Advantages Higher water reclamation for …

tailings thickening Archives - International Mining

Outotec has introduced the 2nd Generation Paste Thickener to, it says, maximise underflow density regardless of challenging mineralogy and tailings feed-rate variation. The thickener enables consistent and efficient dewatering performance – even with changing process conditions, according to …

Chile Tailings Seminar 2012 -Thickening

Thickener Type Feedwell & Underflow Avg Tank Torque Flocculation Yield Stress Slope Conventional Non-Diluting o< 50 Pa 0o-9 K <30 Hi-Rate Diluting < 50 Pa 8o- 10o K >25 Hi-Density Diluting 50 – 125 Pa 10o- 20o K >75 Paste Diluting 100 – 400 Pa 30o- 45o K >200 TORQUE = K * Diameter2

Mastering dry tailings management in challenging conditions

Oct 14, 2020· With E-Disc filters, the high-density thicker operates in a unique closed-loop design, ensuring high water recovery and overflow clarity. Meanwhile, our P-Duc auto-dilution technology for high-density thickeners ensures a 50% turndown target ratio is met – …

Treatment of Gold Tailings in High Rate Thickeners

Sep 22, 2018· Since most CIP tailings pulps are at a density of about 40% solids, it is necessary to dilute them in order to achieve good flocculation in the thickener feedwell. In the above example, a capital cost of $54,000 and power cost of $32,000 p.a. was incurred by the installation of overflow recirculation pumps, piping and instruments.

(PDF) Understanding the Thickening Process

The thickening process is the primary method of producing high solids slurries for the minerals industry. Thickener outputs can accommodate a range of tailings disposal options from low yield ...

Thickeners and Clarifiers - TAKRAF

Thickeners and Clarifiers. DELKOR's thickener is a proven performer across a variety of applications ranging from the mining and minerals industry to industrial, chemical, water treatment and wastewater industries. With units of up to 100 m in diameter having been installed, the benefits of our DELKOR conventional, high-rate, high-density and ...

High Rate Thickener - Outotec

The Outotec FrothBuster™ deaerator reduces the amount of froth forming on the surface of thickeners and our innovative Outotec Vane Feedwell™ incorporates interconnected upper and lower zones to further improve performance. Uses flocculation chemistry to dramatically increase settling rates (0.35-1.5 t/m2h) Offers consistent and high ...

Thickener evolution a testament to customer commitment

Jun 11, 2021· It features a floor slope that is typically used in high-density thickeners (3:12), which gives it a depth of almost 20m in the centre. Again, the thickener has a diameter of 125m, an installed torque of 10 M lb-ft and rake mechanism of 20 M lb-ft. It uses the forced-dilution P-DUC system, and is designed to process 3,750 tph of tailings.

Most common problems in thickener operations (part 1)

Figure 2. Water balance of a high-density thickener in an iron ore concentrator plant. The most common problems in thickener operations include the presence of suspended solids in the recovered water and the density or percentage of solids of the thickener discharge outside the set targets.

Flocculant Dosage - Thickening, Filtering, CCD & Water ...

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 files and provide a more complete input.

High Density Thickened Tailings (HDTT) Storage

Water savings and tailings deposition can be accomplished with fewer tanks and at a lower capital cost than with the equivalent number of Deep Bed paste thickeners. Reduced viscosity associated with the underflow concentrations of the HiDensity Thickener results in lower pumping costs — an important factor for deposition areas far from the plant.