SOLUBLE METAL RECOVERY IMPROVEMENT USING HIGH …

recovered in a countercurrentdecantation (CCD) circuit. Cu is extracted from the pregnant liquor using solvent extraction (SX). The loaded strip liquor from the SX plant is fed to the electrowinning circuit to produce Cu cathodes. The washing efficiency in the CCD circuit is important to the recovery and hence, the overall copper production.

Get Price

Counter current decantation Spanish translation – Linguee

Many translated example sentences containing "Counter current decantation" – SpanishEnglish dictionary and search engine for Spanish translations. Look up in Linguee; Suggest as a translation of "Counter current decantation" ... Countercurrent thermal drying of the solid fractions obtained in the decanting stage, along with salts from the ...

Get Price

NEW DEVELOPMENT MODEL FOR BAUXITE DEPOSITS …

where the bauxite residue (“red mud”) is settled and separated from the pregnant / green liquor. The settler underflow slurry with the bauxite residue is sent to a counter current decantation (CCD) wash system for the recovery of dissolved alumina and caustic soda values in the solution adhering to the solids, and the wash liquor stream is

Get Price

EKCP

Products Services. The equipment product line consists of Liquid Solid Separation products for the Mining, Mineral Metallurgical Process, Chemical Process, Food Process, Refinery, Pulp and Paper, Power Plant, FGD System, Municipal Industrial Waste and Water Treatment and with a wide range of related services.

Get Price

(PDF) DESIGN OF COUNTER CURRENT DECANTATION IN …

The counter current decantation had been used since 90 years ago in the hydrometallurgical plant. It is currently adopted by all new hydrometallurgical plants located in the Katanga Province of ...

Get Price

Control of countercurrent washing operation in alumina ...

Entrapped caustic liquor in the red mud residue, a byproduct of the Bayer Process used to produce alumina from bauxite ores, is recovered in a series of countercurrent, multistage washer trains using the process diluting liquor.

Get Price

US4043760A Counter current decantation apparatus ...

A counter current decantation system for the fluid separation of liquids or solids having different densities or absorptive capacities wherein the material to be separated is placed in an inclined separator having a series of decantation pipes, each of which is connected at the bottom thereof to a pump for pumping a fluid mixture upstream at varying pressures.

Get Price

Counter Current Decantation (CCD) SysCAD Documentation

The Counter Current Decantation (CCD) model is used in ProBal mode to quickly determine the concentration in the final over and under flow streams from a series of thickeners. The user is required to specify the number of stages in the system. The underflow from the model will have the same percentage solids as the feed to the system.

Get Price

Counter Current Decantation

Counter Current Washing and Leaching Calculations. Many processes in the hydrometallurgical and chemical industries require the separation of dissolved material from suspended solids. Counter current decantation (CCD) with thickeners is one of the methods generally used. The process engineer needs a quick and accurate CCD calculation method.

Get Price

HPAL Process — Precision Valve Engineering

Counter Current Decantation. The autoclaves discharge leached slurry to the countercurrent decantation (CCD) washing area, where it is mixed with flashsteam heated water, producing a clear solution of nickel and cobalt in preparation for hydrogen sulphide precipitation of mixed nickel/cobalt in the sulphide precipitation plant.

Get Price

Counter Current Decantation Process In Mining Encyclopedia

Counter current decantation bauxite ntgroupeu Counter Current Decantation Design Formula The principle of Counter Current Decantation is simply that when water or solution is to act upon solids both are made to pass in contact in opposite directions so that at each end the strongest or most potent portion of either is acting upon the weakest or ...

Get Price

counter current decantation arrangement

counter current decantation thickener. Counter Current Decantation (CCD) A system of multi stage settlers used in the Froth Treatment process. Bitumen froth and dilution solvent are introduced counter currently into the vessel arrangement such that solids free diluted bitumen is removed in the first stage and bitumen free solids (tailings) are removed from the last stage.

Get Price

US Patent for Red mud dewatering and washing process ...

Frequently, dram filters for red mud separation by filtration are used as an alternative or supplement to counter current decantation. Vacuum filtration is performed after 3 to 4 washing stages, permitting a residual moisture of 45% with a washing water requirement of 2 to 3 per ton of dried mud.

Get Price

Processing of Bauxite Ores Mine

Processing of Bauxite Ores To Obtain Aluminum Bauxite, the primary aluminum ore, uses the Bayer Process to extract alumina from the ore. The processing begins with crushing to 12 inch particles and wet screening, to remove some silica fines, which are generally present with bauxite.

Get Price

Major Mines Projects | Musselwhite Mine

The use of cyanide begins with the grinding area, which uses recirculated cyanide bearing solution from the counter current decantation (CCD) wash circuit as process water within the grinding mills, Knelson concentrators, Delkor linear screen and pump boxes.

Get Price

Counter Current Decantation Design Formula

The principle of Counter Current Decantation is simply that, when water or solution is to act upon solids, both are made to pass, in contact, in opposite directions, so that at each end the strongest or most potent portion of either is acting upon the weakest or most exhausted portion of the other. The recovery of dissolved gold and silver from slime pulp in the cyanide process, as first ...

Get Price

Red mud dewatering and washing process Andritz ...

Mar 07, 2000· The subsequent counter current decantation (CCD) consists of a series of washing stages. Usually, 5 to 7 stages, each one with 2 or more washers of at least 30 meters diameter, are used for the usual alumina capacities in the range of 1 million tons per year.

Get Price

CCD Definition: Counter Current Decantation | Abbreviation ...

Definition of CCD, what does CCD mean, meaning of CCD, Counter Current Decantation, CCD stands for Counter Current Decantation

Get Price

Countercurrent distribution Wikipedia

Countercurrent distribution (CCD, also spelled "counter current" distribution) is an analytical chemistry technique which was developed by Lyman C. Craig in the 1940s. Countercurrent distribution is a separation process that is founded on the principles of liquid–liquid extraction where a chemical compound is distributed (partitioned) between two immiscible liquid phases (oil and water for ...

Get Price

Equations for Calculating Recovery of Soluble Values in a ...

How to Cite. Scandrett, H. F. (2013) Equations for Calculating Recovery of Soluble Values in a Countercurrent Decantation Washing System, in Essential Readings in Light Metals: Alumina and Bauxite, Volume 1 (eds D. Donaldson and B. E. Raahauge), John Wiley Sons, Inc., Hoboken, NJ, USA. doi: /

Get Price

Kent McGrew CCD vs AFP Final Tons Per Hour

(AFP) and Counter Current Decantation (CCD) for Solution Recovery from Acid Leach Tailings Kent J. McGrew, , Tons Per Hour, Inc., 2016 ABSTRACT Comparisons of capital and operating costs are made between two copper leaching operations:

Get Price

counter current decantation process in mining encyclopedia

counter current decantation bauxiteShanghai Zenith … Welcome to the Shanghai Zenith Mining and Construction Machinery Co., ... The underflow, or red mud, then passes to a counter current decantation process...

Get Price

Countercurrent exchange Wikipedia

Countercurrent exchange along with cocurrent exchange and contracurrent exchange comprise the mechanisms used to transfer some property of a fluid from one flowing current of fluid to another across a barrier allowing one way flow of the property between them. The property transferred could be heat, concentration of a chemical substance, or other properties of the flow.

Get Price

Bauxite residue issues: I. Current management, disposal ...

Bauxite residue issues: I. Current management, disposal and storage practices. ... predesilication, digestion, clarification, and countercurrent decantation (CCD) washing (thickener series). A further thickening and/or filtration step prior to residue discharge (usually to a bauxite residue disposal area or BRDA) follows these unit processes ...

Get Price

Mineral Processing Solutions WesTech Engineering, Inc.

Mineral Processing. ... Bauxite ore is crushed and milled to reduce the particle size, making the extraction step more efficient. ... These processes include: sedimentation for concentrating ore slurry, counter current decantation for washing and recovery of pregnant solution from leached ore slurry, polishing of pregnant solution prior to ...

Get Price

Counter Current Decantation

Countercurrent decantation (CCD) and countercurrent washing (CCW) circuits can be significantly more efficient and costeffective with the right technology and process optimisation. We have over 130 years of experience providing solutions for liquidsolid separation.

Get Price

Design of counter current decantation in copper metallurgy ...

Foreword The counter current decantation had been used since 90 years ago in the hydrometallurgical plant. It is currently adopted by all new hydrometallurgical plants located in the Katanga ...

Get Price

Diffusion in the countercurrent dialysis circuit ...

The countercurrent method is the most efficient because it maintains the same concentration gradient along the entire length of the circuit. The difference in efficiency (in terms of urea clearance) is approximately 20% in modern filters, when comparing concurrent and countercurrent arrangements.

Get Price

Maximize Precious Metals Recovery with CCD Circuits and ...

Mar 28, 2017· Maximize Precious Metals Recovery with CCD Circuits and HighDensity Thickeners. Posted by Mick L. McCaslin, PE on March 28, 2017 ... Lixiviation is often followed by a Counter Current Decantation (CCD) circuit to recover the valuable mineral from the gangue.

Get Price

Major Mines Projects | Mutanda Mine

The slurry from the final leach tank will be washed, with cobalt effluent solution topped up with return dam solution, and then thickened in a series of five counter current decantation CCD thickeners. Alternate wash water will be sourced in order of preference from process water, raw water or raffinate.

Get Price

Heating Cooling Classification Steam The effect of ...

caustic from the process, attributable to certain mineral phases in the bauxite. Figure 1. At left, process flow diagram of Bayer Process illustrating its cyclic nature, and right, flows at each stage (n) in countercurrent decantation (O = overflow; U = underflow). Figure 3. Mineral transformations of bauxite ores due to weathering

Get Price

US6033579A Red mud dewatering and washing process ...

Frequently, dram filters for red mud separation by filtration are used as an alternative or supplement to counter current decantation. Vacuum filtration is performed after 3 to 4 washing stages, permitting a residual moisture of 45% with a washing water requirement of 2 to 3 m 3 per ton of dried mud. In this process too, pumps, particularly ...

Get Price

Countercurrent | Definition of Countercurrent by Merriam ...

Countercurrent definition is a current flowing in a direction opposite that of another current. How to use countercurrent in a sentence.

Get Price
Top