Flotation of sylvinite from Thakhek, Lao, P.D.R.
รหัสดีโอไอ
Creator 1. Chairoj Rattanakawin
2. Woraruethai Lakantha
3. Ittirit Kajai
Title Flotation of sylvinite from Thakhek, Lao, P.D.R.
Publisher Research and Development Office, Prince of Songkla University
Publication Year 2019
Journal Title Songklanakarin Journal of Science and Technology
Journal Vol. 41
Journal No. 3
Page no. 545-550
Keyword cationic flotation, chemical and operating factors, potash, sylvinite
URL Website http://rdo.psu.ac.th/sjstweb/index.php
ISSN 0125-3395
Abstract The purpose of this research is to study about sylvinite flotation. Both chemical and operating variables are main factors in this cationic flotation study. The chemical factors consist of mineralogy, solubility, amine dosages and types of frothers: pine oil and MIBC added. The operating factors, controlling flotation kinetics, compose of particle size, agitation intensity and conditioning time. Mineral characterization was carried out using XRD technique. From the XRD trace, both sylvite (KCl) and halite (NaCl) are major minerals. Therefore, a sampled potash ore from Thakhek, Lao, P.D.R. can be characterized as sylvinite. And ore solubility is 84.2 g/100 g water at 34oC. Chemical analysis of this ore was conducted using AAS technique. It is coincide with the mineralogical analysis that KCl and NaCl are the major components with some minor KCl?MgCl2?H2O. Both grade and recovery of the rougher concentrates were used to measure the flotation efficacy. Chemically, an optimum flotation of sylvinite in the saturated brine with amine and MIBC was found at the dosages of 150 and 50 g/ton ore respectively, yielding 41.5% K2O with 95.9% recovery. Operationally, an optimum flotation of 30-mesh sylvinite with the indicated amine and MIBC dosages at the agitation intensity of 1000 r.p.m and 9-minute conditioning time yields 39.1% K2O with 94.2% recovery. Furthermore, the flotation kinetics follows the first-order rate law with rate constant of 1.41 sec-1 . Suggested that direct cleaner and/or re-cleaner flotation with reagent combinations of both collector and frother, or reverse flotation of the retaining halite using alkyl morpholine as a collector could enhance the final concentrate grade up to 60% K2O complying with the fertilizer industry.
หน่วยงานเจ้าของบทความวารสาร

บรรณานุกรม

EndNote

APA

Chicago

MLA

ดิจิตอลไฟล์

Digital File
DOI Smart-Search
สวัสดีค่ะ ยินดีให้บริการสอบถาม และสืบค้นข้อมูลตัวระบุวัตถุดิจิทัล (ดีโอไอ) สำนักการวิจัยแห่งชาติ (วช.) ค่ะ