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 ...
The thickener could be "sliming" and will produce a dirty overflow combined with a low density underflow. If this is a problem, a reagent called a FLOCCULANT is added to the thickener feed. A …
In mineral processing, the mechanism of thickeners is a critical component for achieving efficient separation, concentration, and recovery of valuable minerals.
How a Continuous Thickener Works As a feed stream enters the thickener, the solids settle to the bottom. Clarified liquor overflows to the top and settled solids undeflow is removed from the bottom. The following illustration shows a cross section, schematically illustrating the operation of a continuous thickener.
Mineral processing in Australia and China - (papers selected from the second Australia-China Joint Symposium on Minerals and Metallurgy) Edited by Prof. Aibing Yu. 10 September 2015. Advances in comminution and classification of minerals - Best mineral processing papers from the European Symposium on Comminution and …
Thickeners are simple, reliable, effective and efficient-under the right conditions. For the rest of the time, however, thickener performance (or lack of it) seriously affects the rest of the...
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. Applications. Aggregates. Coal. …
Thickener Waste Management in Mineral Processing To Prevent Environmental Pollution Marzieh Hosseini Nasab1 1Department of Mining Engineering 1 University of Sistan and Baluchestan 1 Zahedan, Iran Abstract— Water plays a vital role in mineral processing and about 2-3 tons of water is used for the treatment of one ton of ore.
PROCESS FLOWSHEET DESCRIPTION: Continuous counter-current decantation cyanidation flowsheet. ORE TREATED: Gold and silver ores amenable to the cyanidation process and where economics justify plant outlay. ADVANTAGES: By producing the precious metals in bullion form, the highest net return is realized on many …
The mineral settling characteristics will change continuously under the influence of mineral processing reagent and pH. The settlement characteristics directly affect the settlement velocity. The faster the solid settlement rate is, the shorter the residence time of slurry in the thickener is and the faster the growth rate of mud layer is.
The thickening process is the primary method of producing high solids slurries for the minerals industry. Thickener outputs can …
Thickeners are important and widely used for mineral processing to make concentrate from ROM (raw ore) . Specifically, thickeners are used to increase the solid content of concentrate slurry ...
From a minerals processing point of view, there are many technologies that could benefit from auditing and/or optimisation. ... So, taking a thickener as an example, its inefficient operation can lead to excessive flocculant and reagent consumption, increased solids carry over in the overflow system, reduced underflow densities, increased ...
In mineral processing plants, thickening is intended to remove the water content of pulp so that the mineral processing products meet the requirements of the other processes. ... The main equipment includes center drive thickener, periphery drive thickener, high-efficiency thickener, deep-cone thickener, and inclined-plate …
Global minerals processing operations can reduce costs, increase productivity and lower health and safety risks thanks to our new energy- and water-efficient technologies and processes. ... Optimising thickener feedwells in minerals processing can enhance throughput, improve unit stability, reduce downtime and save companies costs, …
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 sedimented material having a solids content higher than that of the feed is the underflow. The clarified liquid from which solids ...
The development status and research progress of inclined plate sedimentation equipment, as well as the research progress of how to prevent the blockage of sedimentation channel were discussed. The main disadvantages of traditional inclined plate thickener were analyzed. A kind of new type lamella thickener which could …
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.
In the current ore dressing process, most mineral processing plant adopt wet separation process, so the concentrate has very high water content, which can't be smelted directly. ... After several improvements of Xinhai, this thickener is equipped with larger processing capacity, lower overflow turbidity and higher discharging concentration. It ...
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 ; ...
Our thickener is specifically designed for the mineral processing industry and tailing processing. How It Works. Get The Price. Products display. Overview. Introduction: Mineral thickeners are recognized as the most …
They must provide operating flexibility to meet process needs. Such factors multiply the decisions which must be made prior to the selection of a thickener. Most thickener designs, suitable to minerals applications, are based on the separation of -65 mesh, 2.7 specific gravity solids containing slimes.
The application of thickener modeling and optimization software in the wastewater treatment plant of mineral processing illustrates an optimal control operation with stable underflow concentration. ... it is possible to make the thickener overloaded and the mineral particle loss when the mud bed level is high enough. On the other hand, if …
Gravity thickeners generally retain 80−90% of the solids in the thickened product stream, depending on the sludge characteristics and the efficiency of the preceding conditioning stage. The sludge characteristics also govern the solids loading rate (SLR), which is the rate in kg/d at which the sludge dry solids enter the process per unit …
The simplest use of a thickener in a metal-mining operation is to get water out of a pulp; for example, in a desert country where water is too valuable to be thrown away with the tailings. There you have a …
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.
thickener tank EIMCO KCP Thickener tanks are constructed either from bolted / steel welded or concrete. Most of the chemical process industries prefer the steel tanks construction since they may be elevated above ground level, allow inspection of the tank's floor for leakages and bring the underflow slurry pumps nearer to the outlet of the ...
Tailings, the by-products of mineral processing, often contain fine particles and water. Thickeners are extensively used to dewater and thicken the tailings, reducing their volume and facilitating proper disposal or storage. ... It is recommended to involve experienced engineers, process experts, or thickener manufacturers during the design ...
Maximization of water recovery in thickeners is an essential step in the mineral processing industries. The Gol-E-Gohar iorn ore processing plant uses a center pier thickener with a diameter of 38 ...
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 …
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 big tank there is a lot going on just the same. ... Dewatering Tags thickener operation manual, thickening in metallurgy, thickening in mineral processing. Previous. Next ...
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 ...
Mineral Processing Design and Operations (Second Edition) An Introduction. 2016, Pages 471-506. Chapter 14 - Solid – Liquid Separation – Thickening. ... by thickeners. For further water removal, filters are used where in excess of 90% of the water can be removed. The thickener operation can be a batch or continuous process, with …
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 …
Increasing thickener profitability through integrated online monitoring Integrated online monitoring simplifies the convoluted process of monitoring data, which is central to precise process control in …