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discharge pressure in a thickener mining

Beginners guide to thickeners - Metso Outotec

Jun 16, 2017  Thickeners accumulate solids to allow both the residence time and the bed pressure necessary to achieve dewatering. To establish this solids inventory it is necessary to operate with the solids feed rate in excess of the solids withdrawal rate for some period during startup, then at steady state operation, the solids feed rate should match the ...

Thickening - Resource Book

Unlike conventional thickeners, high rate thickeners must use flocculants. The basic design of a high rate thickener is below. High rate thickener feed wells are designed to disperse flocculants thoroughly into the feed end to admit the flocculated slurry into the settling zone of the thickener without destruction of the newly formed floccules.

(PDF) THICKENER DESIGN, CONTROL AND DEVELOPMENT

In the current climate, there is a real need to bridge the gap between theory and the real world mining considerations, and develop viable, cost-effective, high performance thickeners.

Thickener optimization to reduce production costs ...

The underflow density is important in maintaining stable operation and avoiding tailings block in the thickener discharge outlet. Underflow rate: A volumetric in-line flow meter can interact with a density meter and the flow meter presents a dry solids mass flow

Pumping thickener underflow - WatsonMarlow

Hose pump performance is far less impacted by paste density, viscosity, suction conditions and discharge pressure and are not affected by the abrasive/aggressive nature of paste and chemicals. There are no moving parts in the product zone to obstruct the flow. The hose is the only component that comes into contact with the product. back to mining

MINING - CMO Valves

high concentration of high pressure sol-ids such as slurry pipelines, tailing pipe-lines, high pressure pulp pump impulses, drainage in high pressure lines, etc. DIMENSIONS: DN80 to DN900 (bigger under request). ( P) PRESSURE: DN80 to DN900 (3” – 36”) 21 kg/cm2 – 300 psi. >300 psi under request up to 750 psi. FLANGES DRILLING:

Maintenance Guide of Thickener-xinhai

Thickener is the common mineral processing equipment in mineral processing plant, which is widely used in the concentration and dewatering of mineral processing plant. However, in the practical operation, the fault rate of thickener is up to 37%. Therefore, daily maintenance is the key point to reduce the fault rate of thickener.

Cyclones - Resource Book

discharge hopper or speeding up the cyclone feed pump) will also change the pressure. Within limits, an increase in operating pressure will cause the cut point to drop (finer overflow). This is because the centrifugal force on the particles is increased, forcing more fine particles to the cyclone wall and hence reporting to the underflow.

How a Thickener Works - 911metallurgist

Mar 17, 2017  The Workings of a Thickener. The invention of the Dorr thickener made possible the continuous dewatering of a dilute pulp whereby a regular discharge of a thick pulp of uniform density took place concurrently with an overflow of clarified solution. Scraper blades or rakes, driven by a suitable mechanism, rotating slowly over the bottom of the ...

Most common problems in thickener operations (part 2)

The main issues that mining plants face in thickener operations have their origin in three main sources: design, mineral variations and mechanical or instrumentation and control problems. 1.- The design stage is the most relevant aspect to determine the diameter (area) and the torque of the thickener.

TAILINGS DISPOSAL: AN APPROACH TO OPTIMIZE WATER

The Southern African Institute of Mining and Metallurgy Platinum 2012 768 Low-, medium-, and high-density tailings disposal ... piping would be required to handle higher pressure requirements. Paste thickeners would be ... 4 000 kPa pump discharge pressure, the

Uses and Benefits of Flow Measurement in the Operation

underflow discharge, and in the clear water outlet in the overflow. ... Thickeners are used to increase the percentage of particle solids in the tailings to maximize water recovery for reuse. The need to efficiently recover water in minerals processing is a priority because ... pressure and length of frequencies to determine the distance, speed ...

Stacking practices of high density tailings

700~900 m³/h, with their outlet pressure within 300~400 kpa. The control of the outlet flow rate o directly affects the control of the underflow density. The balance between the underflow discharge and the feed of the thickener is the precondition for the controlling of

Pumping thickener underflow Mining WMFTG Mining

Pumping thickener underflow in the mining industry. Our pumps are designed to handle high-solids content fluids, such as concentrated ore paste with a solids content of 40-80%. ... Hose pump performance is far less impacted by paste density, viscosity, suction conditions and discharge pressure and are not affected by the abrasive/aggressive ...

Treatment of coal tailings - ScienceDirect

Jan 01, 2013  In order to meet discharge constraints, it is usual to treat process water, either overflow from the tailings thickener or supernatant decanted from the tailings dam, through a water treatment plant. The water treatment process will be dependent on the plant water chemistry and the discharge permit but will typically include pH adjustment ...

Mine Thickeners, Thickener Mineral Processing, Thickener ...

Peripheral Transmission Thickener simple equipment structure, large processing capacity. Peripheral transmission covers peripheral roller transmission and peripheral gear transmission two forms that has advantages of high safety factor, stable and reliable running, easy to operation, convenient maintenance and long-range control.

Conventional Thickeners - Solid Liquid Separation

Historically thickeners were introduced to the mining industry in 1905 when the beneficiation of ores by froth flotation was invented in Australia. In 1964 there was a project to reprocess the huge piles of tailings that accumulated over the years and recover the remaining copper .

US4226714A - Thickener control system - Google Patents

The present invention is directed to a method and apparatus for maintaining steady state conditions in a separator. Steady state is maintained by controlling mass flow rates of influent to, and underflow from the separator. Specifically, an influent specific gravity and flow

Peristaltic Hose Pump Tech Modern Pumping Today

Mining companies sustain losses up to $3,000 per hour for every equipment failure incident. Bredel 80 hose pump in thickener underflow application CASE STUDY #1: NIOBIUM EXTRACTION. Niobium (Nb) is a rare earth mineral with impressive anti-corrosive properties, making it very resistant to heat and wear.

Dewatering Equipments for Mineral Sludge MC

The high-pressure steam contacts with the material or takes away the moisture through heat exchange Each types of dewatering equipments are designed with different structures and working principle, that is suitable for different materials. in this article, will introduct 11 types most popular dewatering equipments that designed for mineral and ...

High Efficiency Deep Cone Thickener,Flocculant Thickener ...

When the block happens, must shut down the gate on the concentrate pump and then feed the high-pressure water into the discharge bucket to solve the block problem. If foreign matters falling into the thickener, should discharge the pulp completely then clean

High density slurry and paste tailings, transport systems

High pipeline pressure gradients The exponential increase in yield stress and viscosity as solids, concentration increases is a common feature of high density systems. This means that these slurries will have higher pipeline pressure gradients than conventional tailings slurries and pump station discharge

How to Conduct Right Maintenance for the Sludge Thickener ...

Sludge thickener is the most widely used equipment in the mineral processing plant, in which every concentration and dewatering process need sludge thickeners. However, during the actual operation process, the failure rate of sludge thickener can reach 37%, so in order to reduce the failure rate of sludge thickener, daily maintenance is the key ...

Most common problems in thickener operations (part 2)

The main issues that mining plants face in thickener operations have their origin in three main sources: design, mineral variations and mechanical or instrumentation and control problems. 1.- The design stage is the most relevant aspect to determine the diameter (area) and the torque of the thickener.

(PDF) Metalliferous Mining -Processing Juan Giglio ...

A differential pressure transmitter is installed in the thickener cone and the pressure signal input to a PLC controller. This signal is then used to configure a control loop as shown in fig. 2, with the underflow valve regulation being controlled as a function of static pressure (i.e. solids mass in thickener).

Thickener optimization to reduce production costs ...

The underflow density is important in maintaining stable operation and avoiding tailings block in the thickener discharge outlet. Underflow rate: A volumetric in-line flow meter can interact with a density meter and the flow meter presents a dry solids mass flow

Thickener optimization to reduce your production costs ...

the thickener is done with a pressure transmitter that senses the rising bed mass. The sensor is fitted in the discharge cone and can control the underflow slurry pump speed to achieve a constant bed mass. The surface of any sensor in contact with the slurry medium must be resilient to abrasive particles and be cleaned regularly due to sticky

High density slurry and paste tailings, transport systems

High pipeline pressure gradients The exponential increase in yield stress and viscosity as solids, concentration increases is a common feature of high density systems. This means that these slurries will have higher pipeline pressure gradients than conventional tailings slurries and pump station discharge

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 industries such as wastewater management, to separate solids from liquid in a slurry.

Paste Thickening and Backfill Mineral Industry Solutions

In underground mining, the WesTech Deep Bed™ Paste Thickener is an emerging option to the conventional solution of high-rate thickener/vacuum filter for paste backfill applications. There can be a number of factors which make paste thickening an attractive alternative.

High Capacity Thickeners / Clarifiers Enviro-Clear ...

Enviro-Clear - Manufacturer of clarifiers, thickeners, horizontal belt vacuum filters, pronto pressure filters, linear screens, and replacement drives. High capacity, high rate, and conventional thickeners / clarifiers provided for liquid solid separation for mining, chemical processing and industrial applications.

MudMax™ Bed-Level Monitoring System

Patented Bed-Level Instrument That Brings Thickener Control Within Reach. MudMax™ uses advanced technology to deliver a first-of-its-kind bed-level monitoring system that provides 360-degree bed-level measurement inside thickeners and clarifiers. Multiple sensors located in the active bed-level area directly detect and accurately measure bed ...

Dewatering: An Increasingly Important Mineral Process E MJ

Using a HiFlo thickener can greatly reduce the volume reporting to a slurry pond, the company stated, or properly condition the slurry for press dewatering to a stackable, solid-phase discharge cake. Other Phoenix products include recessed-chamber and membrane filter presses and piston-membrane pumps which, it noted, can provide alternatives to ...

50zjh High Pressure Centrifugal Pump For Coal Mining ...

50zjh High Pressure Centrifugal Pump For Coal Mining Equipment , Find Complete Details about 50zjh High Pressure Centrifugal Pump For Coal Mining Equipment,Centrifugal Discharge Pump,Thickener Slurry Pump,Slurry Pump To Feed Filter Press from Pumps Supplier or Manufacturer-Shijiazhuang Naipu Pump Co., Ltd.

NEWSLETTER - University of Western Australia

comparable pump discharge pressure. The implementation of paste and thickened tailings (PTT) technology on any mining operation can only be justified if it is the most cost-effective solution available. The cost of the plant required to thicken tailings, transport and then discharge

High Efficiency Deep Cone Thickener,Flocculant Thickener ...

When the block happens, must shut down the gate on the concentrate pump and then feed the high-pressure water into the discharge bucket to solve the block problem. If foreign matters falling into the thickener, should discharge the pulp completely then clean

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

Jul 19, 2018  Thickener discharge solid loading versus feed solid loading based on ... for evaluating the potential of paste thickeners in dewatering mining tailings. ... in thickeners and select pressure and ...