Separation of dark-colored minerals from feldspar by selective flocculation using starch

Date

2004-01-26

Author

Dogu, I
Arol, Ali İhsan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

248
views

0
downloads

Feldspar ores usually contain some amounts of impurity dark-colored minerals (DCM), rich in iron. Such ores must be comminuted for the liberation and separation of the said impurities. Ultra-fine particles which are generated during comminution are difficult to treat by conventional mineral processing methods. It is known that iron minerals have a specific affinity for starch. This phenomenon has been successfully exploited in the selective flocculation and flotation of iron ores. In this study, the possibility of separation of DCM from feldspar by selective flocculation using starch was investigated. It was found that DCM also had a specific affinity for starch. Flocculation tests revealed that DCM alone could be flocculated with starch, while feldspar alone could not. Selective flocculation tests of the mixture of DCM and feldspar indicated that selective separation of DCM from feldspar using starch as a flocculant could be possible.

Subject Keywords

General Chemical Engineering

URI

https://hdl.handle.net/11511/45123

Journal

POWDER TECHNOLOGY

DOI

https://doi.org/10.1016/j.powtec.2003.11.009

Collections

Department of Mining Engineering, Article

Suggestions

OpenMETU
Core

Study of adsorption characteristics of long chain alkyl amine and petroleum sulfonate on silicates by electrokinetic potential, microflotation, FTIR, and AFM analyses ÖZÜN, Savaş; Atalay, M. Umit; Demirci, Şahinde (Informa UK Limited, 2019-05-19) The long-chain alkyl amines and petroleum sulfonates are mostly used to remove unwanted minerals from feldspar ores in acidic pHs. In this study, their adsorption characteristics on pure albite and quartz were investigated by electrokinetic potential measurements, microflotation tests, Fourier transform infrared spectroscopy, and atomic force microscopy studies. According to the results, amine had strong influence on zeta potentials of both albite and quartz turning them positive and resulting over 90% flot...
Characterization of zeolite membranes by gas permeation Soydaş, Belma; Kalıpçılar, Halil; Department of Chemical Engineering (2009) Zeolite membranes are attractive materials to separate gas and liquid mixtures. MFI is a widely studied zeolite type due to its ease of preparation and comparable pore size with the molecular size of many substances. In this study MFI type membranes were synthesized over porous α-Al2O3 supports and characterized with XRD, SEM and gas permeation measurements. In the first part of this study the effect of soda concentration of the synthesis solution on the membrane morphology and crystal orientation was inves...
Dissolution of colemanite and crystallization of gypsum during boric acid production in a batch reactor Erdoğdu, Anıl; Eroğlu, İnci; Department of Chemical Engineering (2004) One of the most commonly used boron compounds, boric acid, is produced by dissolving colemanite (2CaO₉3B2O3₉5H2O) in aqueous sulfuric acid whereby gypsum (CaSO4₉2H2O) is formed as a byproduct and must be separated from the main product. This process consists of two steps, dissolution of colemanite and formation of gypsum. The amount of boric acid formed depends on the first step, dissolution of colemanite. In the latter step, gypsum crystals are formed and stay in the reaction mixture to grow up to a size l...
Synthesis and Characterization of Aluminum Containing Silica Aerogel Catalysts for Degradation of PLA Sivri, Seda; Dilek Hacıhabiboğlu, Çerağ; Sezgi, Naime Aslı (Walter de Gruyter GmbH, 2019-05-01) Aluminum loaded silica aerogel based catalysts were synthesized by impregnation of aluminum into silica aerogel produced using sol-gel method in different aluminum loadings (2.5-15 wt%) to investigate their performances in degradation of polylactic acid (PLA).
Production of nano alumoxane from aluminum hydroxide Sezgiker, Korhan; Gündüz, Güngör; Department of Chemical Engineering (2010) Alumina (Al2O3) is one of the most widely used engineering ceramic. It can be used in a wide range of applications like electrical/thermal insulation, wear resistance, structural refractories, cutting tools, abrasives, catalyst carriers and coatings. A traditional ceramic process has several steps (i.e. powder synthesis and processing, shape forming, drying, organic burnout and densification). Accessing powders with sizes in the range of a couple of micrometers down to several tens of nanometers is consider...

Citation Formats

I. Dogu and A. İ. Arol, “Separation of dark-colored minerals from feldspar by selective flocculation using starch,” POWDER TECHNOLOGY, pp. 258–263, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/45123.