High-Rate Thickeners, or Clarifiers, recover immediately reusable process water for mineral and aggregate producers, as well as environmental contractors. High-Rate Thickeners provide immediately reuseable process water and recover approximately 85% of the water from an effluent feed.
How is thickener diameter calculated?
A = Thickener area in square feet per ton of dry solids thickened in 24 hours. F = Initial density (Parts Water to Solids by weight). D = Final density to which pulp will settle or density at which you want to discharge pulp from thickener. R = Settling rate in feet per hour.
What are the errors may hamper the process of designing thickener area?
The main design errors include:
- Lack of capacity of the feeding launder.
- Less thickener area.
- Lower drive torque.
- Smaller feed-well diameter.
- Lower capacity pump discharge.
- Larger diameter of the discharge pipe (underflow). This produces mineral settling.
What is the difference between thickening and clarification?
Thickeners are used in continuous process applications where liquid-solid separation by sedimentation is involved. Concentration, or raising the density of a mixture of solids and liquids (feed slurry). Clarification, which involves removing solids from the mixture.
What is Torque in thickener?
Torque is nothing more than a rotary force being applied from the rake arms to the drive shaft. It is the degree of torque that indicates to the operator the load that is in the thickener and when the rake arms have to be lifted.
What are the types of thickening agents?
66 Types of Thickening Agents.
What is conventional thickener?
Description. Conventional Thickeners are generally incorporated in heavy duty applications when the underflow density is high and substantial torques are required to convey the settled solids from the periphery to the central outlet for pumping away.
What is artificial thickener?
These aqueous-based synthetic thickeners are high molecular weight polymers containing an acidic monomer as an essential component (e.g., acrylic acid, methacrylic acid, maleic acid). These monomers ionize on addition of a base to develop the desired viscosity.
What is thickener in mechanical operation?
A thickener is an equipment structure used for the continuous gravity settling (sedimentation) of solids in suspensions. Suspension is fed into one or more basins or chambers and, whilst it is passing through, the solids settle out. a mechanism to convey settled solids to a discharge point.
How does a thickener operate?
Thickeners are mechanically continuous process equipment which operates on a particle/floccule sedimentation principle where in simplest terms the solids settle to the bottom of the thickener tank and the water overflows the tank.
What are the different thickening agents?
What is thickening in mineral processing?
Thickening is a process where a slurry or solid-liquid mixture is separated to a dense slurry containing most of the solids and an overflow of essentially clear water (or liquor in leaching processes).
What is the size of a high rate thickener?
High-rate thickeners that are built as dedicated machines are available in sizes up to 40 meter diameter but retrofits of conventional thickeners are often larger in size.
How do McLanahan high-rate thickeners work?
Integration of McLanahan High-Rate Thickeners into a plant is simple. Control systems take care of most of the operation; however, McLanahan can train operators in the preparation and use of flocculants, as well as general Thickener operation. High-Rate Thickeners separate liquids from solids using hindered settling.
What is the main point in thickening?
Your last question is the main point in thickening. Under flowing solid concentration demand from the highest thickener. More high thickener will be more solid concentration. Now highest thickener has 20 meters that solid concentration is 65…70%.
Why choose Metso Outotec high rate thickeners?
Take advantage of our pioneering thickening and clarifying methods with the Metso Outotec High Rate Thickener, including advances such as our leading feedwell technology and low-drag rake arms. Metso Outotec High Rate Thickeners include a number of innovative features in design.
