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dewatering thickening sizing a high rate thickener

Sizing a high rate thickener - Thickening, Filtering, CCD ...

To my mind in a high rate thickener, solids concentration during flocculation is a powerful tool and we have to choose the solids concentration to achieve maximum

How to Size a High-Rate Thickener - Thickening, Filtering ...

The size of the basic thickener, and feed well dimensions like diameter & depth, even the rake torque and drive sizing is not the hard part. The hard part is getting the full scale unit to deposit the thickened slurry evenly and uniformly and ensure that there are no

Concentrate Dewatering & Thickening

Oct 21, 2016 · The size of a concentrate thickener is determined by the tonnage of solid material to be dewatered, the amount of water in the pulp, and the settling rate of the solids. In the absence of specific data, it is usual, for the purposes of rough calculations, to allow 10-15 sq. ft. of tank area per ton of dry concentrate produced per 24 hours.

Ultra High Rate Thickeners – AltaFlo™ – PHOENIX Process ...

AltaFlo™ Ultra High-Rate Thickeners / Clarifiers. The PHOENIX AltaFlo™ Thickener is a rake-less thickener that provides ultra high-rate mixing, flocculation, and internal dilution followed by clarification and positive sludge collection and removal in a single tank. The Thickener's unique internal geometry, a deep sidewall and steep conical ...

Dewatering: Thickening, Filtering, CCD, Water Treatment ...

Hi. I want to know the design considerations for a High Rate Thickener that will be used to separate platinum solids from used mining water which forms a slurry with an inlet slurry velocity of 75 [l/s] and a solids percentage of 0.5 [%&...

Thickening and Dewatering - WEF Home

• Disc thickeners • Volute thickeners The advantages and disadvantages of thickener types should be considered when selecting equipment. Table 1 gives an overview of the most common mechanical thickening devices and their relative operational parameters. (See note at end of fact sheet.) Parameter Drum Thickener Gravity Belt Thickener Thickening

Designing for Paste Thickening Testwork and Sizing for ...

Figure 7: High rate thickener tests. Below Figure 8 shows laboratory-scale units with a diameter of 190 mm and a height of up to 4 m. It has been established, after numerous comparative lab tests, that with the 190 mm diameter unit, the “wall effects” are negligible, and results equivalent to pilot scale are achieved. High Rate Thickener ...

高速率增稠剂-增稠,过滤,CCD和水处理,尾矿处理-冶金和矿物

During the last decade, various methods have been utilized in sizing a thickener such as Coe and Clevenger, Talmage and Fitch and Wilhem-Naide. Which method is superior (recommended) in sizing a high rate thickener? Which value of impact factor is recommended in sizing a high rate thickener?

Designing for Paste Thickening Testwork and Sizing for ...

Figure 7: High rate thickener tests. Below Figure 8 shows laboratory-scale units with a diameter of 190 mm and a height of up to 4 m. It has been established, after numerous comparative lab tests, that with the 190 mm diameter unit, the “wall effects” are negligible, and results equivalent to pilot scale are achieved. High Rate Thickener ...

Dewatering, thickening, liquid-solids separation, fines ...

6. Dewatering, thickening, liquid-solids separation, fines recovery, classification, water clarification and reuse technologies. The art and science of analyzing and improving your dewatering, classification or thickening process is deeply rooted in PHOENIX’s DNA. We are a dewatering, thickening and classification process technology provider ...

Biosolids Technology Fact Sheet Gravity Thickening

Gravity thickener designs usually include circular tanks, 3-4 m (10-13 ft) deep and up to 25 m (82 ft) in diameter. The dimensions are based on prediction of settling due to gravity alone. To assist solids transport, gravity thickener bottoms are constructed with a floor slope between 1:6 and 1:3.

Tailings Mineral Industry Solution

Copper Thickening / Dewatering. A high rate thickener thickens the copper concentrate. A vacuum drum (or other) filter dewaters the copper concentrate further before refining or storing until sale. Moly Thickening / Dewatering. A high rate thickener thickens the moly concentrate.

Beginners guide to thickeners - Outotec

Jun 16, 2017 · 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.

Measuring Settling Rates and Calculating Thickener Capacity

Mar 03, 2016 · The required depth of the thickener may be ascertained by computing the capacity of the thickening zone to contain a supply of solids equal to the total capacity of the tank for the number of hours required to thicken the pulp to the density required in the discharge, and to this depth adding an allowance for the lost space due to the pitch of ...

Challenges and opportunities of hydrocyclone-thickener ...

Jun 15, 2018 · Suppose a shallow bed thickener (e.g. conventional or high rate) with the throughput of 1000 t/h with 28 and 40 wt.% solids concentrations in the feed and discharge, respectively. Thus, 42% of thickener feed water content is recycled and 58% is lost. Suppose a dewatering hydrocyclone was employed prior to the thickener.

Thickeners | McLanahan

McLanahan offers a range of thickener types, including High-Rate , Ultra Rakeless , High-Density and Paste, that are tailored to an individual application. They can be used as stand-alone solutions or in conjunction with other equipment. High-Rate Thickeners are used by the aggregate and mining industries, as well as environmental contractors ...

(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 ...

Sludge thickening and dewatering - Ontario.ca

Mar 29, 2019 · A summary of the thickening and dewatering performance expectations for conventional processes is provided in Appendix V, which should be used in conjunction with the details in this chapter. 17.1 General. The sludge solids concentrations that are listed in Section 16.1.1 - Sludge Quantities and Characteristics and Table 16-1 are the ...

Stimulation of Thickening and Dewatering of Tailings Slime ...

Mar 04, 2021 · Abstract The article presents a case-study of thickening and dewatering of tailings slimes from Zhezkazgan Concentrating Plant using UltraflocTester machine and different Kemira’s Superfloc series flocculants. From among the test flocculants containing various polar groups, the anion-type A-150 flocculant has demonstrated the highest efficiency towards tailings slimes. Relatively

CHAPTER 3 SLUDGE THICKENING - Marmara

Location of the thickener in a wastewater treatment plant is important. If sludge is to be digested, thickening a blend of primary and waste activated sludge is a good practice. If these sludges are to be dewatered, then they should be thickened separately and mixed immediately before dewatering [3]. Sludge Thickening vs. Dewatering

Gravity Belt Thickener | Komline-Sanderson

Gravity belt thickener model selection is a function of hydraulic feed rate; the Model G-25 thickening system is generally appropriate for 0.5% to 1.0% waste activated sludge feed rates up to 125 GPM (7.9 liters/sec or 28 M3/h) and the GSC and GSCE series machines are appropriate for higher feed rates.

Dewatering to higher densities - an industry review

Dewatering to higher densities ... High Rate thickeners were pioneered in the sugar industry by Enviroclear in the 1980s and operated with a deep ... This technology started as an extension of high rate thickening, utilising a deeper mud bed to augment the thickening capacity. High density or high compression thickeners

CHAPTER 12 Sludge Processing and Disposal

12.3 Thickening 12.3.1 General 12.3.2 Gravity Thickeners ... The size of valve and piping should be at least 1-1/2 inches. 12.1.6 Sludge Piping ... Thickener solids loading rates vary with the type of sludge. Some typical solids loading rates are given below in Table 12-2. These values shall be

Thickening and Dewatering Chemicals – PHOENIX Process ...

Proper selection, mixing and delivery of thickening and dewatering chemicals such as flocculants and coagulants as well as coagulant aids are integral to thickening and dewatering processes. Working together with PHOENIX ensures the right mix of application knowledge and cost-effective polymers to reduce your operating costs.

Chapter 5 Solids Thickening Dewatering Jan 2005

Chapter 5 – Solids Thickening and Dewatering ... The solids loading rate of a DAF thickener is generally 0.4 to 1.0 lb/hr/sqft to produce a thickened WAS of 3 to 5 percent TS. Adding polymer increases the solids loading rate to ... They are well suited for the thickening of high

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

Jul 19, 2018 · Several dewatering techniques were investigated, including settling by using two different thickeners (high rate thickening and paste thickening),

UNDERSTANDING POLYMER FOR THICKENING AND

THICKENING AND DEWATERING PROCESSES . ... Polymers that have a positive charge (otherwise known as cationic) and a high molecular weight are typically used for thickening and dewatering solids separation processes. Figure 3. A Depiction of a Floc Formed by a Cationic Polymer Chain Bridging the ... drum thickener (Solids Flow Rate) is 350 gpm ...

CHAPTER 3 SLUDGE THICKENING - Marmara

Location of the thickener in a wastewater treatment plant is important. If sludge is to be digested, thickening a blend of primary and waste activated sludge is a good practice. If these sludges are to be dewatered, then they should be thickened separately and mixed immediately before dewatering [3]. Sludge Thickening vs. Dewatering

(PDF) THICKENER DESIGN, CONTROL AND DEVELOPMENT

Like the High Rate thickener, ... for which gravity thickening provides a partial or preliminary solution. ... Errors in sizing thickeners for highly flocculated slurries by the standard methods ...

THE ROLE OF ORE PROPERTIES IN THICKENING PROCESS

densification rate and bed compression. Also, the relationship between aggregate size and thickening time was obtained (Usher and Scales 2005). As mentioned above, the role of ore properties has not been studied by researchers, and most of them have focused on the effect of suspension properties in dewatering process.

High Rate Thickener - Outotec

Benefits. Outotec High Rate Thickeners include a number of innovative features in design. Our Directional Autodil™ and Turbodil™ systems auto-dilute feed while optimizing performance and flocculant consumption. Our innovative Outotec Vane Feedwell™ incorporates interconnected upper and lower zones to further improve performance.

(PDF) Reconstructed rheometer for direct monitoring of ...

[11], the conventional gravity high-rate thickener and filter, in addition to being costly, will result in a low solid mass fraction of underflow. Compared with other thickeners, the

Tailings management Sustainable and complete dewatering ...

May 03, 2019 · thickening equipment includes bridge-supported and column-supported designs to suit both smaller and larger throughput mines. Tanks can be in-ground, on-ground or elevated. High-rate thickeners are designed to provide roughly 12 times the throughput of conventional machines of similar size. — Maximum capacity — Improved control

Process Equipment – Products – PHOENIX Process Equipment

PHOENIX products have proven reliable and efficient since 1984. With proven, reliable and efficient processing equipment ranging from belt filter presses and bucket wheel dewatering systems, to sludge thickeners and dewatering chemicals preparation and delivery systems, we are dedicated to understanding the needs of operators across a variety of markets and recommending the right system

Stochastic chance-constrained optimization framework for ...

Sep 01, 2021 · The dewatering equipment of the thickening-dewatering process is a paste thickener with a diameter of 30 m and a height of 5.3 m and a plate and frame filter-press.The overflow pulp of the cleaning is the feed quantity of the thickener, the feed quantity is thickened by gravity and the underflow concentration increases gradually.