Five Reasons for Measuring Density in Thickening Processes
End-users in the mineral processing industry are striving for optimal thickener operation, which results in saving water and collecting the highest amount of valuable material for processing. ... This whitepaper describes the purposes and benefits of measuring density at different points at thickener tanks. The paper starts with a short ...
Thickener technology for mineral processing – …
Thickener technology for mineral processing. A multi-disciplinary CSIRO research team was recognised for their development of a comprehensive set of tools and techniques for improving the …
Dewatering & Tailings Disposal Winter 2020.docx
MI1004 – Mineral Processing I: Winter 2020 Module #5, Unit #1, 2 – Thickening/Filtering and Tailings Disposal Assignment #8 – Due Friday April 9, 2020 Name:_____ For multiple choice or True/False questions, please highlight your answers in yellow. In the short answer questions, please use complete sentences or paragraphs.
Most common problems in thickener operations (part 1)
Thickener design errors; In thickener design, there are two specifications that will define the tank efficiency to process minerals: thickener area and drive torque. These specifications commonly have high variability and are required to adjust to the programmed processing tonnages during the life of the mining project. Thickener area
Solid – Liquid Separation – Thickening
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 sitting on ...
Thickener
The thickener is applicable to concentrate and tailings dewatering treatment in the mining application, widely used in metallurgy, chemical industry, coal, non-metallic mineral processing plant, environmental protection, and other industries. In fact, the high-efficiency mining thickener is not a gravity separation equipment, but a piece of ...
Difference Between Clarifier and Thickener
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.
Mineral Processing, Equipment Manufacturers, Ball Mills, …
Here, you can have a deeper and more comprehensive understanding of Xinhai Mining. Xinhai provides mineral processing technology, equipment manufacture and one-stop service for mineral processing plant, which solve many problems for mine investors. Xinhai equipment mainly include: ball mills, flotation, thickeners, and so on.
Mining Thickener
24m thickener installed in Russia. Mining thickener is mainly used for dewatering the wet concentrate during the ore dressing process. Our thickener is mostly located between cleaning beneficiation process and filtration equipment. Thickener is applied to both the concentrate and tailings to recover water. The thickener could be …
Desliming
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 ...
Thickener Technology Refurbishment and Retrofitting
Thickeners are used in mining operations and mineral processing facilities to separate water from tailings or concentrates. Aside from recovering valuable minerals, …
McLanahan | Thickener vs. Clarifier: What's the …
A thickener, in contrast, is designed to do just that – thicken! While a part of this process by definition releases the liquid, the quality of the overflow liquor is secondary. Suspended solids clarities of up to …
Mineral Processing Solutions
This process uses starch (depressant) and amine (quartz collector) as reagents to promote the separation of the contaminant mineral (quartz) from the iron-bearing mineral. The floated material from the flotation …
Thickening of Mineral Processing Products | SpringerLink
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 …
SEPARATION RECOVERY OF HIGHLY CLARIFIED LIQUID …
ANDRITZ EcoSET is a cost-efficient thickener range that handles light- to medium-duty solid-liquid separation. With its plug-and-play control system, the ANDRITZ EcoSET thickener is a modular and standardized unit that reduces engineering requirements and delivery time. ANDRITZ GeoSET THICKENER ANDRITZ GeoSET is our standard …
Raking in gravity thickeners
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 …
Improve thickener operations by measuring density
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 produced by mining activity.. Thickeners can be used as a water recovery system, to meet requirements in the recovery and reprocessing of …
Measuring Settling Rates and Calculating Thickener Capacity
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 ...
Measurement and Control for Solid-Liquid Separation Process
In mineral processing production, solid-liquid separation process includes concentration process and filtration process, and the common equipment is mainly thickener and filter. Thickener generally applies to the concentration of concentrate pulp, middlings pulp, and tailings pulp, in which low concentration pulp is concentrated into …
Copper Processing | Multotec
A wide range of mineral processing equipment is used in converting the copper ore to the final copper product, our solutions range includes: ... After secondary flotation the concentrate is sampled and sent to a thickener, where froth bubbles break and the copper minerals settle to the bottom of the tank.
CCD Filtration System
CCD Filtration System. Slime treatment, as commonly used by metallurgical engineers, includes thickening, agitation, and filtering and as applied, to cyanidation also includes washing by continuous countercurrent decantation (C.C.D.) and/or filters. "Slime" is the general term used to describe the finer portion of pulp in a combination sand ...
How to Size a Thickener
Place a measured quantity of pulp at a known density in a beaker or glass cylinder. Fix a narrow strip of paper on one side of the container. Mix pulp thoroughly. Draw a line on the paper at the top of the pulp and mark "0" minutes. For five minutes, at one-minute intervals, mark the point to which the solids have settled.
Removal of Froth from Thickener
The big misconception is that the thickener produces froth, which couldn't be further from the truth and typically comes from slurry being jetted into feed tanks prior to the concentrate thickener. Most suppliers have a boom type arrangememt on the long rake arms that floats on the surface and pushes the froth on top of the thickener aroud and ...
Thickener
Beginners guide to thickeners 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 …
Circular Clarifiers and Thickeners
The Monroe Circular Clarifiers and Thickeners are available in self-supporting prefabricated steel units or they can be designed for installation in a concrete tank. Existing structures and systems can sometimes be …
Minerals | Free Full-Text | Improving Nickel Recovery in Froth
The pressure for saving water by closing the water loops in mineral processing is increasing continuously. The drivers for higher recirculating rates include water scarcity in dry areas, environmental legislation that is becoming stricter in most countries, limitations set for wet tailings management and the increased demands for …
How to Operate a Thickener
Keep the worm chamber on the drive mechanism full of oil, and take care of the grease fittings daily. The lifting screw gear ought to be greased well, and it is a good idea to keep grease on the central shaft for about a foot below the worm gear. And don't fall into the thickener; it doesn't look well.
Thickening
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 …
Raking in gravity thickeners
Thickener rakes fulfil three main functions: 1) to move sediment to the underflow, 2) to assist in dewatering sediment that settles onto the thickener bed and 3) to scrape deposits away from the base, and sometimes the walls, of the tank. It is the first of these functions that is the focus of this paper. Although thickener rakes are essential ...
thickeners in mineral processing
Thickeners in mineral processing are continuously monitoring and improving by measuring density in the feed of the system, in the feedwell and in the underflow. …