A thickener has several basic components: a tank to contain the slurry, feed piping and a feed well to allow the feed stream to enter the tank, a rotating rake mechanism to assist in moving the concentrated solids to the withdrawal points, an underflow solids withdrawal system, and an overflow launder.
In thickening (also called sedimentation), the solids in a suspension settle under the influence of gravity in a tank and form a thick pulp. This pulp, and the clear …
Xinhai provides mineral processing technology, equipment manufacture and one-stop service for mineral processing plant, which solve many problems for mine investors. ... High-efficiency Thickener. Increase the efficient settlement area volume; Add the feed pipe under the liquid level, deaerating tank, inner over , and zigzag overflow ...
Thickeners in mineral processing can be monitored and improved by measuring density in the feed of the system, in the feedwell and in the underflow. Combined with a flow …
The thickened pulp is either pumped from the Thickener for further dewatering, blended with processed material or discharged to waste if the concentrated mineral has no value. The MEP Thickener Drive Mechanisms are centre drive types relying on the conventional basis of design which is a well made, heavy duty machine capable of handling arduous ...
Above-ground thickener tank s sometimes include a central cylindrical discharge boot, ... In mineral processing, dewatering and drying are critical aspects from the technical and economical ...
GNZ thickener is a new High-rate thickener with central-drive, automatic lifting rake that we have developed based on foreign technology .It is widely applicable to treatment of various industrial feed pulp, like coals, metal ore dressing water, metallurgy, chemical, tailings treatment, environmental protection etc.
Since 2008, ZJH begins to supply laboratory and pilot scale ore dressing equipment for Mines and Mineral beneficiation Plants, such as crushers, ball mills, classifiers, conditioning tanks, flotation cells, thickener tanks, …
We have fixed up a couple of diagrams on this page to show you the inside of one,and, as you see, the main elements are the tank, the rake arms, and the drive mechanism. In operation, the tank is full of …
Diefenbach thickeners are comprised of a tank, feed pipe feedwell, rake (and pickets, depending on the thickener style), a bridge containing the rake drive mechanism, and a chemical dosing system. The slurry feed enters …
The dense Thickener solids are raked to the thickener's underflow cone and are removed via a slurry pump through the underflow pipe. Underflow slurry densities can vary based on the type of material being processed, size distribution of solids being settled, or other process factors but as a general rule, range from 35-50% solids by weight.
The current phase of this work, the three year P266D Improving Thickener Technology project, has 27 sponsors comprising mineral processing companies, reagent suppliers and thickener …
In mineral processing, a gravity thickener is often used to concentrate tailings slurry due to its large capacity and ease of operation. Tailings slurry is generally fed through a central feedwell which dissipates the kinetic energy while enhancing mixing. ... The thickener consists of a conical body tank, a central feedwell with an annular ...
The term "conventional thickener" refers to those tanks with a shallow base slope and a relatively shallow depth of sediment, and is the type of equipment that is the focus of this study. ... whereas our focus here is on "conventional" thickeners that are used widely in minerals processing applications.
Thickeners — or Clarifiers, depending on the application — can be used to recover immediately reusable process water, as well as extract fines and other materials. …
The measurable parameters that can be used for thickener control include thickener feed flow rate, feed density, underflow density, overflow clarity, bed level, bed mass, rake torque, rake height, solids settling rate and underflow rehology.
Knowing how to size a thickener and determine the capacity required to handle a pre-determined tonnage of a certain pulp, by overflowing a clear solution and obtaining the desired pulp density of thickener discharge, depends upon the settling rate of that particular pulp. The settling rate of any pulp is easily determined by simple …
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 ...
Thickener troubleshooting in mineral processing plants involves identifying and resolving issues that hinder the efficient separation of solids from liquids. One common issue is poor flocculation, which can be caused by incorrect flocculant dosage, improper mixing, or changes in slurry characteristics. Conducting jar tests to determine the …
A thickener has several basic components: a tank to contain the slurry, feed piping and a feed well to allow the feed stream to enter the tank, a rotating rake mechanism to assist …
Mineral Processing Design and Operations (Second Edition) An Introduction. 2016, Pages 471-506. ... The thickener tanks are usually fabricated using steel sheets. But tanks with concrete sides are quite common. Some small tanks (usually < 30 m in diameter) are made of plastics. The whole assembly is installed either above ground …
Running a thickener properly isn't as easy as it looks. True enough, a thickener doesn't make a racket like a ball mill, or spew out froth like a flotation machine, or bounce up and down like a jig, but down inside that …
Starting with the basics of thickener theory, key elements of the sedimentation process and options for thickener selection are explored, as well as testwork requirements and the features of...
The pilot-scale thickener facility used in this study is a closed loop system and is shown schematically in Fig. 1.A sample of slurry is mixed continuously in a 4.5 m 3 mixing tank, and pumped out of the mixing tank underflow into the pilot thickener. The thickener tank is a 2 m diameter by 2 m high side wall tank with a 14° floor and a small …
The thickener is applicable to concentrate and tailings dewatering treatment in mining applications, widely used in metallurgy, the chemical industry, coal, non-metallic mineral processing plants, environmental protection, and other industries. The high-efficiency mining thickener is not a gravity separation equipment, but a piece of dewatering …
In mineral processing operations, water is very important and therefore water recovery plants have an important position. According to CRC Care 2013, every year more than 10 billion tonnes of tailings are …
Mining thickeners, also known as clarifiers or settlers, are large sedimentation tanks used in mineral processing operations. They are designed to separate solids from liquids, allowing for the efficient concentration of solids and the recovery of valuable minerals. Thickeners utilize gravity sedimentation to facilitate the …
Tailings processing is an important stage in the ore beneficiation process, which aims to treat the waste and residue generated in the beneficiation process to reduce environmental pollution or resource waste and maximize the recovery of valuable minerals. The tailings processing solutions mainly depends on the type of ore, beneficiation ...
Clarifiers are characterized by having larger diameter, shallow tanks with a more lightweight rake and drive system. How to size a clarifier. A starting point for sizing clarifiers for most sand and mineral processing applications is to take the volumetric overflow divided by settling area, often abbreviated to m/hr or gpm/ft2.
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Since 2008, ZJH begins to supply laboratory and pilot scale ore dressing equipment for Mines and Mineral beneficiation Plants, such as crushers, ball mills, classifiers, conditioning tanks, flotation cells, thickener tanks, filter press, leaching tanks, grinding balls and . We also design and engineer the whole froth flotation pilot plant for …
The overflow water of the thickener enters the sedimentation tank, and the water after sedimentation can be recycled. 4. Leaching process: The thickener's underflow will enter the mixing barrel with the height difference. Then, the stirred pulp is driven into the double impeller leaching tank with a sand pump, and sodium cyanide is added. 5.
Recognizing the value of refurbishing and retrofitting thickener technology, FL has been working closely with companies in the mining and mineral processing sectors. They have developed technologies such as the E-Volute feedwell, which increases retention time, reduces overflow solids, evens slurry and solid distribution, maximizes ...
Erratic thickener performance proves costly. Water is used in processing most minerals, from simply washing away waste solids, to leaching of target metals with acidic or basic solutions. The solids and liquids then …
Over the years, nomenclature has been adopted that is specific to thickener functions in the mineral processing industries. The solid-liquid mixture that is to be separated by sedimentation is known as the feed. ... The total height of the thickener tank can be determined by allowing 2-½ to 5 ft above the compression zone for the solution in ...
With a thorough understanding of the process, our applications engineers will provide a mixer with the optimum process result in a reliable, robust mechanical package. We have supplied large conditioning tank agitators and high-intensity conditioning agitators to projects worldwide.
The main equipment includes center drive thickener, periphery drive thickener, high-efficiency thickener, deep-cone thickener, and inclined-plate thickener. (2) Flocculation settling thickening: The pulp contains certain amount of fine particles during thickening process and the particle size can be less than 20 μm.
The thickener operator should properly, reasonably and timely lubricate the thickener, check the oil level of the tank every day, and replenish it when necessary. ... To guarantee the normal operation in mineral processing plant and keep a high working efficiency, the maintenance and check is essential. For the beneficiation plant, on the …
a conventional thickener tank with standard center drive rake mechanism •mechanism and rake lift Substantial reduction in TIC due to ... any minerals processing plant. Bridge & Mechanism Froth Management SCD Split Ring Feed System . 19. Corporation, Töölönlahdenkatu 2, FI-00100, Helsinki, Finland
