Experimental Research of Fluorite Flotation Separation

2013 ◽  
Vol 652-654 ◽  
pp. 2576-2579
Author(s):  
Yi Miao Nie ◽  
Li Mei Bai ◽  
Shu Xian Liu
Keyword(s):  
Oleic Acid ◽  
Sodium Silicate ◽  
Experimental Research ◽  
Optimum Conditions ◽  
Experiment Research ◽  
Test Agent

Grade of fluorite in this test is 30.95%,containing CaCO3 0.86%. On the base of much experiment research, such as grinding fineness test, pH test, agent dosage test and so on, the optimum conditions were: grinding fineness for first stage is -0.074mm 65%,pH=9, sodium silicate 0.8 kg/t and oleic acid 0.7 kg/t . The result of tests showed that the grade of CaF2 concentrate, recovery and productivity are 95.38%, 63.42% and31.20% by adopting a circuit of one rough flotation and seven concentrating with grinding fineness -0.043mm90.3%.

The Studies on the Esterification of Oleic Acid Using P2O5/CaCl2/Fe3O4 Composite Catalysts

2011 ◽  
Vol 354-355 ◽  
pp. 133-136
Author(s):  
Xiao Wei Di ◽  
Nalingaova Li ◽  
Jun Zhang
Keyword(s):  
Oleic Acid ◽  
Fatty Acid ◽  
Methyl Ester ◽  
Optimum Conditions ◽  
Composite Catalysts ◽  
Maximum Conversion ◽  
Time Of Reaction

P2O5/CaCl2/Fe3O4 composite catalysts for the esterification of oleic acid was proposed. Optimum conditions for the esterification of oleic acid to produce methyl ester of oleic acid were investigated which yielded a maximum conversion of oleic acid to the methyl ester. The variables were: 1) temperature and time of reaction; 2) amounts of catalyst and 3) ratio of alcohol to fatty acid.

Experimental Research on Modifier Optimization of Flotation Process in a Molybdenum Ore in Inner Mongolia

2011 ◽  
Vol 291-294 ◽  
pp. 3372-3376
Author(s):  
Lin Li ◽  
Xian Jun Lu ◽  
Jun Qiu
Keyword(s):  
Sodium Silicate ◽  
Experimental Research ◽  
Inner Mongolia ◽  
Sodium Hexametaphosphate ◽  
Flotation Process ◽  
Dispersing Agent ◽  
Better Than

The research has conducted a experimental research on the issues in modifier of flotation process in a molybdenum ore concentrating mill in Inner Mongolia. The results show that: when the raw ore is grinded into 61% -200 meshes, which is the same to the site production ore, the sorting index is optimum in neutral magma condition; and for dispersing agent, the sorting effect of sodium silicate is better than sodium hexametaphosphate, and the confirmed sufficient quality of sodium silicate is 300g/t.

The Experimental Research on the Sedimentation Performance of one Molybdenum Ore Flotation Tailings

2011 ◽  
Vol 361-363 ◽  
pp. 343-345
Author(s):  
Lin Li ◽  
Xian Jun Lu ◽  
Jun Qiu ◽  
Peng Li
Keyword(s):  
Sodium Silicate ◽  
Experimental Research ◽  
Ph Value ◽  
Flotation Tailings ◽  
Sedimentation Process ◽  
Layer Density

This paper adopts sedimentation experiment to study the sedimentation process of one molybdenum ore flotation tailings and to investigate the effects of lime and sodium silicate on sedimentation performance of tailings. Through the experiment on sedimentation speed and compressive layer density, it reveals the sedimentation performance rules of these tailings. Meanwhile, it explores the effects of lime and sodium silicate on sedimentation dry beach of tailings. The research shows that: lime could effectively ameliorate the non-easy sedimentation caused by sodium silicate; when the dosage of sodium silicate is 300～800g/t, the sedimentation performance can reach the best reasonable pH value 9-10. Besides, the study also indicates that both sodium silicate and lime are unfavorable to form sedimentation dry beach by tailings of concentrating mill.

Controlled Evaluation in a Diesel Engine of the Biofuel Obtained with Ni/γ-Al2O3 Nanoparticles in the Hydrodeoxygenation of Oleic Acid

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Manuel Sánchez-Cárdenas ◽  
Luis A. Sánchez-Olmos ◽  
K. Sathish-Kumar ◽  
Fernando Trejo-Zarraga ◽  
Víctor A. Maldonado-Ruelas ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Reaction Time ◽  
Diesel Engine ◽  
Atmospheric Pollutants ◽  
Al2o3 Nanoparticles ◽  
Temperature Reaction ◽  
Optimum Conditions ◽  
Weight Percentage ◽  
Hc Emissions ◽  
Controlled Evaluation

AbstractRenewable biodiesel with a high content of n-C17 alkanes was prepared through the catalytic hydrodeoxygenation of oleic acid under optimum conditions of temperature, reaction time and weight percentage of Ni deposited in γ-Al2O3. The hydrotreated vegetable oil (HVO) was blended with petrodiesel (20 % and 40 % of HVO) to evaluate its behaviour in a diesel engine. Comparative studies of power and emission of atmospheric pollutants such as NOx, CO, HC and smoke were evaluated under prepared blends and petrodiesel. The presence of HVO biodiesel at full load generated a slight decrease in power compared to petrodiesel; however, the decrease in emission of pollutants when using the blends containing HVO was significant. In the case of 40 % HVO were able to reduce more of 20 % of CO and HC emissions, and more than 40 % reduction in smoke when compared with petrodiesel. The NOx emissions of the blends with HVO had a significant slightly decrease. Further, the properties of Ni/γ-Al2O3 catalysts are justified by the results of EDS characterization, surface area (SBET), XRD, XPS, HR-TEM and it’s capacity to produce biodiesel.

Experimental Research on Recycling Phlogopite from Molybdenum Tailings

2014 ◽  
Vol 1010-1012 ◽  
pp. 1609-1612 ◽  
Author(s):  
Xiu Lan Wang ◽  
Jian Ming Wang ◽  
Zhi Jun Ma
Keyword(s):  
Sodium Silicate ◽  
Experimental Research ◽  
Sodium Oleate ◽  
Spindle Speed ◽  
Pulp Density ◽  
Experimental Basis ◽  
Foaming Agent ◽  
Alkyl Amine ◽  
Flotation Cell

Taking molybdenum tailings as the research object, the methods of recovering phlogopite on the base of comprehensive utilizations of other valuable minerals has been discussed. The best flotation condition includes that pulp density is 25%, the value of pH is 8.4, and the spindle speed of the batch flotation cell is 1850 r/min, sodium silicate is used as the silicate inhibitor, sodium oleate as collector, alkyl amine as the foaming agent. After cleaning and scavenging, the yield of the recovery and grade of concentrated phlogopite could be reached above 40% and 9.5%, and the yield of recovery and grade of scavenged phlogopite could be reached above 20% and 7.0%. The experimental research may provide the theoretical and experimental basis for phlogopite flotation from molybdenum tailings.

Research of the Low Grade Fluorite Flotation Orthogonal Test

2013 ◽  
Vol 734-737 ◽  
pp. 1068-1072 ◽  
Author(s):  
Jun Long Yang ◽  
Quan Jun Liu ◽  
Yan Hua Guo ◽  
Hong Xiao ◽  
Mei Guang Jiang
Keyword(s):  
Oleic Acid ◽  
Sodium Silicate ◽  
Sodium Carbonate ◽  
Aluminum Sulfate ◽  
Orthogonal Test ◽  
Closed Circuit ◽  
Sodium Hexametaphosphate ◽  
Low Grade ◽  
Acid Dosage

The run-of-mine ore samples which have been used in the study were taken from a fluorite ore. The grade of fluorite was 28.65%. From the condition test, the optimal grinding fineness was-0.074mm accounted for 79.5%. The final optimal reagent system was A1B3C3D3E3 with comprehensive consideration. That is, sodium carbonate was 2000 g/t, sodium silicate was 1000 g/t, aluminum sulfate was 200 g/t, sodium hexametaphosphate usage was 1000 g/t, oleic acid dosage for 2000 g/t. Through the closed-circuit test of flotation, the final index was the fluorite grade of the concentrate was 97.69% and the recovery was 48.07%.

Experimental Research on Ultra-Smooth Surface Polishing Based on Two-Dimensional Vibration of Liquid

2007 ◽  
Vol 329 ◽  
pp. 219-224 ◽  
Author(s):  
Zhong Ning Guo ◽  
X.Z. Huang ◽  
Zhi Gang Huang ◽  
Z.Q. Yu ◽  
T.M. Yue ◽  
...  
Keyword(s):  
Experimental Research ◽  
Quartz Glass ◽  
Smooth Surface ◽  
Sound Intensity ◽  
Input Voltage ◽  
Two Dimensional ◽  
Experiment Research ◽  
Fluid Field ◽  
Surface Polishing ◽  
Key Points

Experiment research of polishing based on liquid two-dimension vibration is carried out by a vibrating device which is driven by ultrasonic source and can produce coupling vibrations of liquid. Sound pressures of some key points in water are tested by hydrophone and translated into sound intensity to evaluate the effect of input voltage of transducer. It is analyzed which vibration state of fluid field and the way that workpiece is clamped is the best for the polishing. Polishing results of quartz glass are evaluated by the use of region-track measure method, and some polishing rules are presented.

scholarly journals EFEKTIVITAS PENDEKATAN INKUIRI DAN MODEL JIGSAW (PI-MJ) TERHADAP MINAT BELAJAR SISWA KELAS 4 SD

2018 ◽  
Vol 1 (1) ◽  
pp. 226
Author(s):  
Yohana Octavany ◽  
Naniek Sulistya Wardani ◽  
Tego Prasetyo
Keyword(s):  
Data Analysis ◽  
Experimental Research ◽  
T Test ◽  
Grade Student ◽  
Experiment Research ◽  
Significance Level ◽  
Data Analysis Technique ◽  
Inquiry Approach ◽  
Analysis Technique ◽  
Quasi Experiment

Abstrak:Tujuan dari penelitian ini adalah untuk mengetahui ada tidaknya efektivitas pendekatan inkuiri dan model jigsaw terhadap minat belajar siswa kelas 4 SD. Jenis penelitian ini adalah penelitian eksperimen dengan quasi experiment research. Teknik analisis data menggunakan uji-t dengan Independent Sample t-Test. Hasil uji-t yang telah diperoleh t-hitung sebesar 4,453 dan taraf signifikansi 0,000. Hasil analisis data untuk mengetahui t-tabel dapat diketahui bahwa t-tabel yang diperoleh sebesar 2,021. Karena t-hitung > t-tabel (4,453 > 2,021) dan signifikansi 0,000 < 0,05 maka Ha diterima yaitu terdapat efektivitas pendekatan inkuiri dan model jigsaw terhadap minat belajar tematik siswa kelas 4 SD.Abstract: The purpose of the study is to determine whether or not the effectiveness of inquiry approach and jigsaw model on the interest of 4th grade students. Type of research is experimental research with quasi experiment research. The data analysis technique uses t-test with Independent Sample t-Test. The result of t-test that has been obtained t-counted 4,453 and significance level 0,000. Result of data analysis to know t-table can be seen that t-table obtained equal to 2,021. Because of t-count>t-table (4,453>2,021) and significance 0,000<0,05 then Ha accepted, there is effectiveness of inquiry approach and jigsaw model on the interest of 4th grade student.

scholarly journals Flotation Studies on Scheelite Concentrate of Chitral, NWFP, Pakistan

1970 ◽  
Vol 46 (1) ◽  
pp. 123-126 ◽  
Author(s):  
KR Kazmi ◽  
MA Bhatti ◽  
A Mehmood ◽  
MS Anwar ◽  
ST Sheikh
Keyword(s):  
Oleic Acid ◽  
Key Words ◽  
Sodium Silicate ◽  
Froth Flotation ◽  
Pulp Density ◽  
High Quality ◽  
Scheelite Concentrate ◽  
Flotation Technique ◽  
Tungsten Metal ◽  
Optimum Grade

A scheelite concentrate, containing 32% WO3, obtained from an indigenous tungsten ore of Chitral, NWFP, Pakistan, has been beneficiated by froth flotation technique to produce high quality tungsten concentrate assaying 64.8% WO3 with 84.47% recovery. This paper presents results on the optimization of flotation parameters like pH, pulp density and reagents. The optimum grade and recovery have been obtained at a feed size of 80 % passing 74 μm, pulp pH of 10.5, pulp solids 25%, oleic acid 0.30 kg/t, polyglycol 0.02 kg/t and sodium silicate 0.125 kg/t of the feed. The obtained tungsten concentrate meets the specifications required to produce tungsten metal and tungsten based chemicals. Key words: Scheelite Concentrate; Beneficiation; Flotation; Grade; Recovery DOI: http://dx.doi.org/10.3329/bjsir.v46i1.8115 Bangladesh J. Sci. Ind. Res. 46(1), 123-126, 2011

Sign in / Sign up

Export Citation Format

Share Document