In:
Ministry of Science and Technology, Vietnam, Ministry of Science and Technology, Vietnam (VMOST), Vol. 65, No. 2 ( 2023-6-15), p. 15-19
Abstract:
TiO2 pigment production from an ilmenite concentrate via a molten alkaline process was investigated. The ilmenite concentrate (54.19% TiO2) was first roasted in the molten NaOH system at various temperatures ranging from 600 to 800°C while the mass ratio of NaOH/ilmenite was varied within the range of 0.8-1.2 for 1 hour. The achieved roasted efficiency was up to 93.93% at a temperature of 700°C and NaOH/ilmenite ratio of 1:1. The roasted product was first leached in water and then in a solution of HCl 20% at 50ºC for 2 hours. The TiOCl2 solution was hydrolysed at 95oC for 2 hours. Precipitation of the hydrolysis process was then calcinated at 800oC. The final obtained product contained up to 96.37% of TiO2. Ilmenite can be used as a raw material in a molten alkaline process. It is obvious that not only high purities of TiO2 could be achieved, but also the reduction of waste materials, raw materials, energy, and time.
Type of Medium:
Online Resource
ISSN:
2525-2461
DOI:
10.31276/VJSTE.65(2)
DOI:
10.31276/VJSTE.vol(number).page
DOI:
10.31276/VJSTE.65(2).15-19
Language:
Unknown
Publisher:
Ministry of Science and Technology, Vietnam (VMOST)
Publication Date:
2023
detail.hit.zdb_id:
3145662-5