manual of high rate thickeners

Outotec® High Rate Thickener. Take advantage of our pioneering thickening and clarifying methods with the Outotec High Rate Thickener, including advances such as low-profile triangular rake arms to reduce rake torque. Outotec Directional Autodil™ and Outotec Turbodil™ are the first thickening systems to auto-dilute feed while optimizing ...

Description. The High-Rate thickeners became popular in the mid 1980's and are relatively newcomers to the sedimentation line of equipment. As already discussed previously Thickeners are a major component in a plant layout and occupy large spaces which may be saved by introducing high-rate machines. Furthermore, they are normally positioned far away from the center of the plant so to allow ...

In high rate thickener (HRT) designs the rise rate or solids loading will dictate the required tank diameter for any given throughput. In high compression (HCT) and paste (PT) applications the bed depth or the mass of solids in the thickener must also be selected to ensure the desired underflow density from the thickener is achieved.

Mclanahan high-rate thickeners, or clarifiers,.Thickener installation manual pdf - binq mining.Jun 15, 2013 thickener installation manual pdf.

High-Rate Thickeners, or Clarifiers, recover immediately reusable process water for mineral and aggregate producers, as well as environmental contractors. Thickeners are beneficial in a variety of applications, including areas where water is in short supply or very expensive, re-circulated water is not suitable for reuse in a plant, ponds are located on minable reserves, or ponds must be ...

PHOENIX HiFlo™ High Rate Thickeners clarify wash plant effluent water while thickening the slurry to 40-45% solids, greatly reducing the underflow slurry rate to the slurry pond. PHOENIX Thickeners use sedimentation technology to maximize the water recovery rate, providing clarified overflow water that can be recycled and reused in the process.

Like the High Rate thickener, the Paste thickener uses high floccu lant dosage and optimised feed . ... installed, its “control” consists o f the number of turns on a manual v alve.

• 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,

The temperature of tests must be uniform and the same as will be maintained in practice. High temperature increases the settling rates in most pulps and it is not rare to find the rate altered from 30 per cent, to 50 per cent, by a few degrees change of temperature. The condition of the pulp tested is of utmost importance.

• 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,

If it is a tailings thickener, you are wasting water, which is unforgiveable in the desert. If it is a concentrate thickener, you . may be handing the filter operator a headache, which he may return with interest. If it is a C.C.D. thickener, you are only making trouble for yourself farther along the line.

High Rate Thickeners Perhaps the most significant design optimisation effort in thickening in the last twenty years has been in developing ways to more effectively use the horizontal cross sectional area of the thickener. The introduction of polymeric flocculants gave an impetus to development of High Rate Thickeners.

In Handbook of Nucleating Agents, 2016. 9.2 BLOWN FILM EXTRUSION. Millad 3988 clarifier is used to produce coextruded blown PP film at 15% lower cost. 1 In comparison with BOPP, blown PP film has improved haze values, gloss, stiffness, and moisture transmission rates. 1 Ingenia Polymers manufactures a high-clarity antiblock masterbatch for PE blown film that produces lower haze than ...

Jan 26, 2015· The most common solids-liquid (S/L) unit operation is thickening. A wide variety of thickeners are used including conventional, deep well, paste, high rate and clarifiers which is a thickener subclass used for removing solids from turbid or very low % solids waters.

The high time for thickeners was in the 60's when the metallurgical industries were booming and sizes of up to 150 m diameter were constructed. Such jumbo thickeners, when centrally driven, require for most demanding applications extra heavy duty drive heads some of which reach a continuous operating torque of 3.300.000 Nm.

2. Rise rate based on the fl ow rate (cubic meters per hour) entering the thickener including dilution water Both solids loading and rise rate are expressed as unit rates (tph or m3/hr) per square meter of thickener surface area. For existing thickeners, these two parameters are effectively predetermined as the available surface area

Thickening or dewatering may be defined as the removal of a portion of the liquid from a pulp or slime made up of a mixture of finely divided solids and liquids. The early methods of thickening employed plain, flat-bottomed tanks into which the pulp was fed until the tank was full. The solids were then allowed to settle as long as required, the top liquid was decanted, the settled solids were ...

high volume low head operation. The ETAQ™ draws supernatant from the Thickener surface and pumps into the RADFLOW™ feed stream to achieve the perfect level of feed dilution for optimal focculation. Deflector plate feedwell Radflow™ feedwell Perturbed Area Feedwell type comparison in scale model thickeners both running at 3m/hr rise rate.

----- TABLE 1 PERFORMANCE OF CONVENTIONAL GRAVITY THICKENING Type of Solids Primary (PRI) Trickling Filter (TF) Rotating Biological Feed (%TS) 2-7 1-4 1-3.5 Thickened Solids (%TS) 5-10 3-6 2-5 Contactor (RBC) Waste Activated Solids (WAS) PRI + WAS PRI + TF PRI + RBC PRI + Lime PRI + (WAS+ Iron) PRI + (WAS+ Aluminum salts) Anaerobically digested PRI + WAS 0.2-1 0.5-4 2-6 2-6 3 …

EIMCO-K.C.P. High rate thickeners are designed to provide high underflow concentration with smaller diameter. The high velocity feed is split to two compartments with opposite tangential inlets that are positioned in two levels, an upper and a lower one. Between those compartments there is a narrow gap through which the flocculent solution is ...

The thickener was a 22.86 meter (m) diameter, high-density thickener with a 3.66 m tank sidewall, producing 40-60 Pa yield stress underflow. ... These bed readings were used to control the underflow discharge rate. Additional manual readings were taken at …

The Gravity Belt Thickener is used to thicken sludge prior to centrifuge or digestion processes. A mix of primary or secondary sludge can easily be thickened to +7% wt, pure secondary to over 5%. The GBT offers: • High unit capacity per floor space • Low residence time eliminates septicity and float scum • Superior thickening • Low ...

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The thickener was a 22.86 meter (m) diameter, high-density thickener with a 3.66 m tank sidewall, producing 40-60 Pa yield stress underflow. ... These bed readings were used to control the underflow discharge rate. Additional manual readings were taken at …

EIMCO-K.C.P. High rate thickeners are designed to provide high underflow concentration with smaller diameter. The high velocity feed is split to two compartments with opposite tangential inlets that are positioned in two levels, an upper and a lower one. Between those compartments there is a narrow gap through which the flocculent solution is ...

The high time for thickeners was in the 60's when the metallurgical industries were booming and sizes of up to 150 m diameter were constructed. Such jumbo thickeners, when centrally driven, require for most demanding applications extra heavy duty drive heads some of which reach a continuous operating torque of 3.300.000 Nm.

2. Rise rate based on the fl ow rate (cubic meters per hour) entering the thickener including dilution water Both solids loading and rise rate are expressed as unit rates (tph or m3/hr) per square meter of thickener surface area. For existing thickeners, these two parameters are effectively predetermined as the available surface area

US4226714A US05/973,758 US97375878A US4226714A US 4226714 A US4226714 A US 4226714A US 97375878 A US97375878 A US 97375878A US 4226714 A US4226714 A US 4226714A Authority US United States Prior art keywords separator influent underflow mass flow flow rate Prior art date 1978-12-27 Legal status (The legal status is an assumption and is not a legal conclusion.

high volume low head operation. The ETAQ™ draws supernatant from the Thickener surface and pumps into the RADFLOW™ feed stream to achieve the perfect level of feed dilution for optimal focculation. Deflector plate feedwell Radflow™ feedwell Perturbed Area Feedwell type comparison in scale model thickeners both running at 3m/hr rise rate.

----- TABLE 1 PERFORMANCE OF CONVENTIONAL GRAVITY THICKENING Type of Solids Primary (PRI) Trickling Filter (TF) Rotating Biological Feed (%TS) 2-7 1-4 1-3.5 Thickened Solids (%TS) 5-10 3-6 2-5 Contactor (RBC) Waste Activated Solids (WAS) PRI + WAS PRI + TF PRI + RBC PRI + Lime PRI + (WAS+ Iron) PRI + (WAS+ Aluminum salts) Anaerobically digested PRI + WAS 0.2-1 0.5-4 2-6 2-6 3 …

thickening operations are carried out. Actually, the thickening of the sludge is a concern to the operator where he desires a high underflow solids concentration. So it is the general practice to design these processes for both thickening and clarification performance.

used to agglomerate the solids to increase the settling rate and improve the overflow clarity. Thickeners generally operate continuously with very high on-line availability. They are used in a wide variety of industries, and in numerous applications. Thickener control has a number of complexities such as varying feed characteristics. Changes in

The Gravity Belt Thickener is used to thicken sludge prior to centrifuge or digestion processes. A mix of primary or secondary sludge can easily be thickened to +7% wt, pure secondary to over 5%. The GBT offers: • High unit capacity per floor space • Low residence time eliminates septicity and float scum • Superior thickening • Low ...

high enough to activate the High Level Sensor in the sight glass. Once the level at this point is achieved, turn the recycle pump OFF. 10. OPEN the manual air inlet by-pass valve and start to introduce pressurized air into the system. Continue to let air into the system until a pressure of ~ 60 psi is reached on the sight glass pressure gauge.

The following is a short cut to designing your own thickener: (a) Size of Thickener As a first stab we can either use the thickener flux (m. 2 /tpd) or the rise rate, depending if solids loading is the dominant (eg. Platinum Tailings) or feed flow rate (e.g. Clarification or low feed solids).

thickening (6-12% solids by mass) is performed to increase the pulp density to about 50% solids by mass. This reduces the size of the leaching plant that would be required as well as reduces the amount of leaching reagents required. Many gold plants use conventional thickening with flocculant addition. High rate thickeners, as well as de-watering

LZZG thickener is a thickener tank that based on gravity and sedimentation which makes solidseparate from liquid well. The concentration of pulp waste water could be enhanced from 2% ~ 15% to 60%~ 70% by the paste thickener, the clear water is overflow from the upper part of the paste thickener , so as to achieve the purpose of sewage ...

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