(PDF) Study on the clarification of a red mud …
M. Normandin et al., "Efficiency of the cylinder test for the evaluation of red mud slurry flocculation and residual turbidity" (Proceedings of the international symposium on Light Metals, Calgary ...
Performances of two flocculants and their …
This stone presents the results of rheological studies of flocculated red mud thickened under various conditions, including polymer mixtures as flocculant. The objective is to define the appropriate flocculant type and dosage in order to produce paste tailings and to promote an efficient solid-liquid separation allowing water reuse. 2. Experimental methodology . The red mud (RM) sample used in ...
RRA Red Mud Flocculants | Ecolab
Remaining red mud residue, which does not digest, is left suspended in the resulting saturated sodium aluminate solution. This red mud residue must be removed prior to further processing of the saturated solution to ultimately precipitate a purified alumina trihydrate product. Red mud removal requires the use of flocculants effective in bridging and entrapping fine red mud solids to rapidly ...
US5346628A - Polymers for flocculating red mud …
Red mud is flocculated from Bayer process liquors using a polymer which contains vinylamine and/or vinylformamide. ... red mud bayer process Prior art date 1993-10-29 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application ...
US5286391A - Red mud flocculation - Google …
Red mud flocculation Download PDF Info Publication number US5286391A. US5286391A US08/013,524 US1352493A US5286391A US 5286391 A US5286391 A US 5286391A US 1352493 A US1352493 A US 1352493A US 5286391 A US5286391 A US 5286391A Authority US United States Prior art keywords polymer primary settler method acrylic acid acid ester Prior art date 1993-02-04 Legal status (The …
(PDF) Red mud flocculation process in alumina …
PDF | The process of thickening and washing red mud is a gooseneck of alumina production. The existing automated systems of the thickening process... | Find, read and cite all the research you ...
Red Mud Settling Flocculants - Extraction Of …
Red mud settling requires using the efficient flocculants to bridge and entrap the find red mud solids to separate the solids from liquor rapidly. The more efficient of our flocculants in this process, the lower the cost of red mud separation. SINOFLOC red mud flocculants provides a unique advantage for alumina refinery industry refiners to address productivity improvement and total cost of ...
The developing of red mud utilization
Few of red mud storage area is reclamed in China, that is not friendly to the surrounding. The key point is to find or to acclimatize plants which are salt-tolerant and alkali-tolerant, but not alien species. (Most alumina refineries are local is the north of China, where is aried and semi-aried climate ) Long term monitoring on the ecologicalization of the land; The utilization of harvested ...
Production – Red Mud Project
Red Mud is produced during the Bayer Process. With this process, we can extract the aluminum (oxy)hydroxides from bauxites and get alumina, which eventually can be smelted and give aluminum. Bayer Process . In 1888, Karl Josef Bayer developed and patented a process, which has become the cornerstone of the aluminium production industry worldwide. The Bayer process, as it has become …
Red Mud Project – Site dedicated on the …
September 2, 2015 Comments Off on Red mud farming and more. Conference. Bauxite Residue Valorisation and Best Practices – BR2020. December 27, 2019 Leave a comment. The 3rd “Bauxite Residue Valorisation and Best Practices” conference will take place ... Read More » ETN. EU H2020 PROJECTS. March 1, 2016 Leave a comment. To tackle its (critical) raw material dependency, …
SETTLING CHARACTERISTICS OF QAL RED MUD
At QAL (Queensland Alumina Limited), the red mud is removed via flocculated gravitational separation. Although the digested slurry is naturally slightly flocculated, flocculent must be added to achieve a practical settling rate and compaction. The flocculents used are synthetic polymers and they are extremely costly. The mos common way of determining the correct flocculent dosage is to perform ...
Red mud – addressing the problem – Aluminium …
Red mud constitutes such a major environmental and wasted resource problem that leading aluminium companies and organisations are exploring various ways to alleviate the situation. Head of R&D and technical director at leading aluminium producer, Rusal, Viktor Mann revealed to Aluminium INSIDER some developments his company is undertaking. For Rusal, zero-waste alumina production is one of …
US Patent for Polymers for flocculating red mud …
Red mud is typically washed in a plurality of sequential wash stages. In each stage, the red mud is washed with a wash liquor flocculated with a flocculating agent and separated from the wash liquor. Flocculating agents are used to increase the rate of settling, improve the clarity of the supernatant liquor by reducing residual suspended solids, and/or increase the density of the settled solids.
Red Mud - an overview | ScienceDirect Topics
Red mud is composed of minerals such as hematite, gibbsite, calcite, quartz, goethite, diaspore, rutile, kaolinite, etc. (Wang and Liu, 2012) measured by using X-ray diffractometer.The specific gravity of red mud is 2.77 gcm −3 measured by gas picnometer. According to its particle size distribution, it is very fine material and has a high surface area (Wang and Liu, 2012).
Bauxite tailings - Wikipedia
Bauxite tailings, also known as bauxite residue, red mud, red sludge, or alumina refinery residues (ARR), is a highly alkaline waste product composed mainly of iron oxide that is generated in the industrial production of alumina (aluminium oxide, the principal raw material used in the manufacture of aluminium metal and also widely used in the manufacture of ceramics, abrasives and refractories).
Red mud flocculation - Nalco stone Company
15.02.1994 · The lower mud layer contains the flocculated material, and as discussed above is comprised of both red mud solids and some amount of pregnant liquor. The overlying supernatant is the liquor that is separated for secondary clarification, again as discussed above. This supernatant is "mud-clear" and the interface between it and the mud layer is clearly seen in some cases, but the …
MATERIAL COMPOSITION AND PROPERTIES OF RED MUD …
Red Mud coming from Tanrai Alumina Processing plant, Lamdong, Vietnam contains high excess alkaline component and many toxic heavy metals. The results showed that Red mud does not contain artificial radioactive isotopes such as 137Cs, 7Be; concentration of Uranium, Thorium in Red mud are less than the average concentration values of Uranium (2ppm) and Thorium (12ppm) in the earths …
Red Mud Lighting - Design Led Lamps and Shades
Welcome to Red Mud Red Mud manufacture and specialise in design led lighting, furniture and gifts. We believe in quality, originality, service and value. We offer a wide choice of table lamps, shades and home accessories with no minimums. We have been running our wholesale business, suppling the lighting industry, for many years. Building up invaluable experience in designing, creating and ...
USE OF SILICON-CONTAINING POLYMERS TO …
Justia Patents Utilizing Precipitant, Flocculant, Or Coagulant, Each With Accelerator Or With Each Other Or Plural Precipitants, Flocculants, Or Coagulants US Patent Application for USE OF SILICON-CONTAINING POLYMERS TO IMPROVE RED MUD FLOCCULATION IN THE BAYER PROCESS Patent Application (Application #20120125862)