depressant in hydraulic washing of ores


Concentration of bauxite fines via froth flotation - SciELO

Quartz is floated and bauxite is depressed with cornstarch as a depressant and amines as promoters. The iron and titanium minerals present in the ore follow the bauxite. Therefore, the depressed product must be separated by magnetic separation to yield a bauxite concentrate and a magnetic product. 1.1 Literature review ...

Froth Floatation Process - YouTube

5 May 2010 ... Follow us at: https://plus.google.com/+tutorvista/ Check us out at http://chemistry.tutorvista.com/inorganic-chemistry/metallurgy.html Froth Floatation Proce...

Removal of Impurities from Tailing (Quartz) - International Journal of ...

In this study, the removal of impurities from tailing (quartz) obtained from Bitlis kyanite ore by flotation method and the production of ... The effects of pH, depressant amount, collector type, collector amount and frother type on the ... Keywords: Quartz, tailing, Bitlis kyanite ore, flotation, magnetic separation. 1. Introduction.

General Principles and processes of isolation of elements - Kendriya ...

It is possible to separate two Sulphide ore by using Depressants. Eg :-In ore containing ZnS and PbS , NaCN act as a Depressant & selectively prevents the ZnS from coming to the froth but allows PbS. 4. Leaching-A chemical method. • Used when the ore is soluble in some suitable solvent. (i) eg.- Leaching of Alumina From ...

General Principles and Processes of Isolation of Elements Section-A ...

For example, in case of an ore containing ZnS and PbS, the depressant used is NaCN. It electively prevents ZnS from coming to the froth but allows. PbS to come with the froth. V) Leaching: It is often used if the ore is soluble in some suitable solvent. It is chemical method used for purification of ore. The following examples ...

hydraulic washing general principles and process of isolation of ...

30 Dec 2016 ... hydraulic washing general principles and process of isolation of elements 12 chemistry cbse. Hydraulic washing general principles and process of isolation of elements Top most best online video lectures preparations notes for class 12 chemistry CBSE IIT-JEE NEET exam +2/12thstd standard intermediate ...

Patent US2423022 - Froth flotation of silica from iron ore by anionic ...

While different ores may require different amounts of anionic reagent to produce an effective silica concentration during the primary silica flotation and the ... However., it appears to act in such a manner as not only to serve as a depressant for the iron minerals but also to cause the selective otation of silica during the ...

concentration of barite and fluorite minerals of eskisehir-beylikahir ...

concentration equipment used for barite-fluorite concentration studies of Beylikahir complex ore. Magnetic separation tests were performed by using the Carpco ... NaQSiF6 as fluorite depressant, and 200 g/t of A845 as collector (Cyanamid company) ... Results of concentration of composite ore by gravity concentration,.

Selective froth flotation concentration of antimonite ore from a ...

concentration of antimonite at the expense of lead and arsenic by use of a depressant. Starting with an containing antimony. (5.89%), lead (0.34%) and arsenic (0.25%) a concentrate containing antimony 30.68%, lead 1.52% and arsenic 0.85% was obtained without an depressant in a Devnver flotation cell. The addition of a ...

Selective froth flotation concentration of antimonite ore from a ...

Mineral ore beneficiation and value addition has become a key factor for economic growth in Africa. Froth flotation process is used to concentrate relatively low grade ores. In Zimbabwe antimonite is mined together with lead and arsenic which are regarded as contaminants and hence the need to selectively remove them.

Principles And Processes Of Extraction - Sanskriti School

Two sulphide ores can be separated using depressants. For eg. NaCN is used to separate ZnS and PbS present in a ore. 4) Chemical Methods(Leaching): a) Leaching of Alumina from Bauxite: Bauxite contains SiO2, iron oxides and titanium oxide as impurities. Powdered ore is treated with concentrated solution ofNaOH at.

CBSE Class 12 Chemistry Notes : Principal and Processes of ...

KCN is an another depressant. Collectors It increasesthe non-wettability of ore particles by water, e.g., pine oils, xanthates and fatty acids. Electromagnetic Separation. This method of concentration is employed when either the ore or the lmpurities associated with it are magnetic in nature. e.g., chromite, FeCr2O4, containing ...

Concentration of Ores – Study Material for IIT JEE | askIITians

Master the concepts of concentration of ores including froth floatation method, magnetic separation, leaching and hydraulic washing with the help of study material for ... Activators and Depressants: Minerals similar in chemical composition, such as sulphides of copper, lead and zinc exhibit an almost equal ability to absorb ...

General Principles and rinciples and Processes o ocesses o ... - ncert

concentration of ores. After that we shall discuss the principles of some of the common metallurgical processes. Those principles shall include the thermodynamic and electrochemical aspects involved in the effective reduction of the concentrated ore to the metal. Elements vary in abundance. Among metals, aluminium is the ...

Metallurgy - Government College Kottayam

metal from its ores. The important steps involved in metallurgy are (i) Pulverization (ii) concentration of ore (iii) isolation of crude metal from its concentrated ore and. (iv) refining of metal. No. Metal. Mineral. 1. 2. 3 ... Two sulphide ores can be separated by using depressants (eg. NaCN). The response of many minerals to the ...

Mineral processing - Wikipedia

In the field of extractive metallurgy, mineral processing, also known as ore dressing, is the process of separating commercially valuable minerals from their ores. Contents. [hide]. 1 History; 2 Unit operations. 2.1 Comminution; 2.2 Sizing; 2.3 Concentration; 2.4 Gravity concentration; 2.5 Froth Flotation; 2.6 Electrostatic ...

Froth Floatation Process - CBSE

In some cases for example, sulphides ores of copper, zinc and lead concentration is brought by this method. ... Concentration of galena is carried out by passing potassium ethyl xanthate (Collector) along with sodium cynamide and alkali (depressants) where by the floatation property of ZnS and FeS2 is depressed. Mainly ...

1. Differentiate between “minerals” and “ores”. (e)Leaching ...

(e)Leaching (Recovery) of Silver/Gold from Silver/Gold Ore. 3. Explain the role of: (i) Pine oil(Collectors) in froth floatation method (ii) Stabilizers (e. g., cresols, aniline) in froth floatation method (iii) Depressant in froth flotation method (iii) NaCN in purification of ZnS & PbS ore (v) NaCN in the extraction of. Silver/Gold from ...

Froth Flotation of Iron Ores - Scientific & Academic Publishing

2 Jan 2012 ... The depressant of iron oxides that is widely used in the reverse cationic flotation is typically starch. starch is not soluble in .... At LKAB (Luossavaara-Kiirunavaara AB) in Kiruna, Sweden, the dephosphorization of a magnetite ore is conducted using magnetic separation and flotation. In the flotation ...