Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : hydrochloric acid

Separation of Aluminum Chloride from White Kaolinite by Slime Leaching Process

Sami Abualnoun Ajeel; Faeza Ali Sameer; Nawal Izat AbdulLatif

Engineering and Technology Journal, 2014, Volume 32, Issue 7, Pages 1707-1719

White kaolinite materials are available raw materials in the western desert in Iraq which exist in Al-Amige region within sediments near the surface. White kaolinite is a high grade raw material which is rich in alumina and its reserve is about 20 million Ton .and because of its locality and its ability of economical investment so the idea of separation of the alumina from it is appeared. The white kaolinite is calcinated at 6000Cfor one hour .The slime leaching for it was applied using hydrochloric acid at different variable conditions (time, molarity ,and particle sizes ) to produce aluminum chloride .The product material can be used as paint manufacturing , antiperspirants ,petroleum refining , product of synthetic rubber and making detergents. The best results were obtained at particle size of-106+75micron, 3 molarity ,3 hour and at 800C, 80 r.p.m. and solid: liquid (1:3). The alumina grade in the powder after separation was reduced from 28% to 5.069 %, and the absorption degree of the Aluminum Chloride was 2.91 and the separation percentage was 82.34 %.

Phosphate Rock Treatment with Hydrochloric Acid for Increasing P2O5 Content

Adel Sharif Hamadi; Shurooq Talib Remedhan; Haider Abd Ali

Engineering and Technology Journal, 2012, Volume 30, Issue 1, Pages 67-76

The present paper deals with the treatment of phosphate obtained from a commercial
sample of Akashat phosphate ore in hydrochloric acid. The factors studied are effects
of the temperature of dissolution, acid concentration, and the time required for mixing
phases. The experiments were performed with 100 kg/m3 of solid/liquid ratio, the size
of the particles ranged 125-140 μm, the initial acid concentrations were 20, 30 and 40
wt% HCl, and the temperature of dissolution was kept constant at 30, 40, 50, 60 and 70
oC. The results indicated that the percentage of P2O5 increases as the HCl concentration
increased using different time and temperatures. Also, the results showed that the best
conditions for P2O5 recovery process according were acid concentration 40%, reaction
time of 90 min, and temperature 30 oC.