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A froth flotation process for the separation of silica or siliceous ganguie from mineral values wherein the silica or siliceous gangue and mineral values In particulate form in an aqueous slurry are subjected to froth flotation in the presence of an amine collector and an alkanol amine corresponding to the formula NH(3x) wherein x is from 1 to 3 and R is separately in each occurrence a C 1 6
A separation process is provided for treating a feed material comprising silica, feldspar, and metal impurities, including at least one of mica, iron impurities, or refractory heavy minerals, to form one or more products for use in making glass. In the process, the feed material is floated in the presence of a depressant to inhibit the flotation of feldspar and thereby form a concentrate
1/3/2009#0183;#32;Liu et al., 2007, Wang et al., 2004, Xu et al., 2004 related the viability of increasing the Al 2 O 3 /SiO 2 ratio of Chinese diasporic bauxites by removing quartz silica through a flotation process. These papers constitute the only literature found about reverse bauxite flotation, for producing gibbsitic or diasporic bauxite concentrates.
Flotation is widely used to concentrate copper, lead, and zinc minerals, which commonly accompany one another in their ores. Many complex ore mixtures formerly of little value have become major sources of certain metals by means of the flotation process. This article was most recently revised and updated by Chelsey ParrottSheffer, Research Editor.
A bulk of silica sand was taken from KowliKosh silica sand mine to reduce its hematite content by reverse flotation. The raw sample consisted of % SiO 2 and % Fe 2 O 3 and traces of Al 2 O 3, CaO, MgO, Na 2 O, K 2 O, TiO 2. Fig. 1 illustrates a general block diagram for the hematite removal process from silica sand. The sample was first fine crushed using milling machines and washed
Schematic of flotation process. Depending on the type of collector, either iron oxide or silica particles can be floated. An anionic collector is added to float the iron
1/7/2010#0183;#32;The silica surface was treated in the same way as Kern and Puotinen . Before use in the flotation experiments, the silica sample was immersed in 28% by weight ammonia, 30% by weight hydrogen peroxide and deionised water at a ratio of 1:1:5. The mixture was heated at 80 #176;C for 30 min.
In general, common mineral impurities in silica sand such as feldspar, mica and other silicate minerals, more adopt flotation process for separation, in order to remove the majority of mineral particles outside quartz sand, and enrichment quartz. Due to the difference of water wettability of different mineral surfaces, hydrophobic particles tend to stick to bubbles and rise to the liquid level
Depression of the flotation of silica or siliceous gangue in mineral Patent... A flotation process is disclosed wherein the selectivity to the valuable mineral is improved by the depression of silica or siliceous gangue by the use of a hydroxycontaining compound such as an alkanol amine. Read more
A separation process is provided for treating a feed material comprising silica, feldspar, and metal impurities, including at least one of mica, iron impurities, or refractory heavy minerals, to...
Silica sand flotation There are some impurities such as iron oxide, aluminum oxide and mica in the quartz sand after washing. At this time, the impurities can be effectively removed by adding appropriate flotation agents through flotation process, so as to obtain higher purity quartz sand. Further washing and dewatering After flotation, quartz sand concentrate can be dewatered by screw sand
Patent US Flotation process for separating silica from A separation process is provided for treating a feed material comprising silica, feldspar, and metal impurities, including at least one of mica, iron impurities,... Lecture 24: quot;Froth Flotationquot; nptel. 16 Jun 2012 Froth flotation is a method to separate or enrich an ore from which metal has. Calcium ions adsorbs on
Beneficiation by Flotation of feldspar is well established. It is a simple matter by flotation to remove the contaminating impurities and keep the alumina (Al2O3) content at 19% even on low grade feldspar ores. Dry recovery methods are economically limited to about 17% Al2O3. The problem in feldspar flotation is to recover slime free granular products, all minus 20 mesh, usually with not over
Flotation | ore dressing | Britannica
to remove silica from iron minerals. The flotation routes of iron ore can be classified into f ive major groups, cationic flotation of iron oxide, cationic flotation of quartz, anionic flotation of iron oxide, anionic flotation of quartz, and combination[2]. Despite the variety of flotation routes
As the majority of the silica sandstones extant in the world contain appreciable mounts of ferroaluminous impurities which generally remain as strongly adhered stains on the surface of the silica grains, the process of Coke is absolutely inadequate for the treatment of such sand particles, because said silica particles would be carried away by the flotation froth together with the silico
flotation for silica reduction. Column flotation is being favoured for this service due to the low capital and operating cost of the equipment, as well as, improved metallurgical performance when compared to conventional flotation cells. CPT Inc. has developed a flotation process for the production of Direct Reduction (DR) as well as Blast Furnace (BF) grade concentrates utilising column
A flotation process for the separation of silica or siliceous gangue from mineral values wherein the silica or siliceous gangue and mineral values in particulate from in an aqueous slurry are subjected to froth flotation in the presence of an amine collector and an alkanol amine corresponding to
Flotation is one of the commonly used methods for silica sand beneficiation. It is mainly used to remove mica and feldspar minerals that are symbiotic with silica sand. However, in the actual production process, the flotation process will be affected by many factors, including: feed size, slurry temperature, slurry liquid chemical composition, flotation reagents and other flotation conditions.
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