Reactions of anhydrous sodium carbonate during the preparation of potassium chloride pressed disks

1967 ◽  
Vol 23 (12) ◽  
pp. 2885-2892 ◽  
Author(s):  
R.A. Durie ◽  
J.W. Milne
Keyword(s):  
Potassium Chloride ◽  
Sodium Carbonate ◽  
Anhydrous Sodium Carbonate

scholarly journals Sodium carbonate revisited

2003 ◽  
Vol 59 (3) ◽  
pp. 337-352 ◽  
Author(s):  
Michal Dusek ◽  
Gervais Chapuis ◽  
Mathias Meyer ◽  
Vaclav Petricek
Keyword(s):  
Sodium Carbonate ◽  
Harmonic Approximation ◽  
Temperature Phase ◽  
X Ray Diffraction ◽  
Anhydrous Sodium Carbonate ◽  
First Order ◽  
Commensurate Phase ◽  
Na Ions ◽  
Fifth Order ◽  
First Time

We present the structure of anhydrous sodium carbonate at room temperature (phase γ) and 110 K (phase δ) based on single-crystal X-ray diffraction data. The incommensurate phase γ was determined almost 30 years ago in the harmonic approximation using one modulation wave and first-order satellites. In our work we use satellites up to fifth order and additional harmonic waves to model the anharmonic features of the structure. The commensurate phase δ is presented for the first time. Using the superspace approach, both phases are compared in order to find common trends in the whole range of the sodium carbonate phases. We present arguments supporting the hypothesis that the driving force of the phase transitions may originate in the unsaturated bonding potential of one of the Na ions.

Analysis of Physical and Chemical Features of Sintering Dust and Study of Recycling Treatment

2015 ◽  
Vol 768 ◽  
pp. 350-362
Author(s):  
Bin Pei ◽  
Guang Zhan ◽  
Zhan Cheng Guo ◽  
Jin Tao Gao
Keyword(s):  
Calcium Carbonate ◽  
Potassium Chloride ◽  
Sodium Carbonate ◽  
Calcium Sulfate ◽  
Sodium Carbonate Solution ◽  
Potassium Sulfate ◽  
Water Leaching ◽  
Leaching Experiment ◽  
Leaching Solution ◽  
Physical And Chemical

Several physical and chemical detection methods were used to study the basic properties of sintering dust collected from Baogang Steel Corporation. The result shows that the major constituents of the electrostatic precipitator dust (ESP dust) were KCl, NaCl, Fe2O3 and Fe3O4. Water leaching experiment on the sintering dust had shown that the KCl in the ESP dust could be separated and recovered by water leaching and fractional crystallization. Component analysis of leaching solution showed that the massive calcium sulfate in the leaching solution should be removed first in order to obtain the pure potassium salt. In order to provide theoretical guidance to inhibit the dissolution of calcium ions from the sintering dust, the water leaching experiment of ESP dust and the dissolution behavior of CaSO4 in the potassium chloride, sodium chloride, potassium sulfate and their mixed salt solution were studied. Result showed that, a lower liquid-solid ratio should be chosen in the leaching process to inhibit the dissolution of calcium sulfate dehydrate. Using sodium carbonate solution as a precipitating agent, the influences of the concentration of sodium carbonate solution, reaction temperature, stirring speed on the preparation of the spherical calcium carbonate were studied. Spherical calcium carbonate with good dispersing performance and grain size distribution in nanometer range of less than 10μm was obtained. The production technology of potassium sulfate by double decomposition was sutdied, the results showed that over 80% and 12.76% of the recovery rate of potassium sulfate and potassium chloride ammonium compound fertilizer could be obtained. Furthermore, a potassium recovery process with joint production of spherical calcium carbonate and potassium sulfate was designed. This process is technically viable and considerable in economic benefit.

Anhydrous sodium carbonate as an acidimetric standard

The Analyst ◽  
1961 ◽  
Vol 86 (1024) ◽  
pp. 464 ◽  
Author(s):  
S. J. Cox ◽  
W. C. Johnson ◽  
E. J. Newman ◽  
J. T. Yardley
Keyword(s):  
Sodium Carbonate ◽  
Anhydrous Sodium Carbonate

scholarly journals Fungitoxic effect of inorganic salts for the management of seed borne Macrophomina phaseolina and Fusarium sp. causing charcoal rot and wilt disease in blackgram

2019 ◽  
Author(s):  
N. Indra ◽  
A. S. Kauvyashree ◽  
D. S. Swetha ◽  
M. Asmina ◽  
. Shalini
Keyword(s):  
Sodium Bicarbonate ◽  
Potassium Chloride ◽  
Sodium Carbonate ◽  
Mycelial Growth ◽  
Potassium Phosphate ◽  
Ammonium Molybdate ◽  
Charcoal Rot ◽  
Potassium Phosphate Dibasic ◽  
Fusarium Sp

The laboratory experiments were carried out to study the effect of different salts viz., potassium chloride (KCl), potassium phosphate dibasic (K2HPO4), sodium carbonate (Na2CO3), sodium bicarbonate (NaHCO3) and ammonium molybdate (NH4)6 Mo7O24) on seed borne M. phaseolina and Fusarium sp. as an alternative to synthetic fungicides for the control of charcoal rot and wilt diseases in blackgram. The evaluation of different salts was performed in vitro using various concentrations viz., 0.5, 1.0, 2.0, 4.0 and 8.0 per cent (w/v). Among the salts tested against M. phaseolina, sodium carbonate, sodium bicarbonate and ammonium molybdate at 0.5, 2.0 and 4.0 per cent respectively inhibited the fungal growth. Among the salts tested against Fusarium sp. sodium carbonate (Na2CO3) at 4.0 per cent concentration recorded complete inhibition of the mycelial growth compared to the other salts. Also seed priming of these salts significantly reduced the seed borne infection due to M. phaseolina and Fusarium sp. under standard blotter test. The salts like potassium chloride and potassium phosphate dibasic (K2HPO4) at all concentrations did not inhibit M. phaseolina and Fusarium sp. which recorded 100 per cent mycelial growth as that of control.

Preparation of Novel Terbium Complexes Using Anhydrous Sodium Carbonate as Base and Nanometer Core

2015 ◽  
Vol 36 (7) ◽  
pp. 782-787
Author(s):  
金 凤 JIN Feng ◽  
张文军 ZHANG Wen-jun ◽  
陶栋梁 TAO Dong-liang ◽  
蒋雪月 JIANG Xue-yue ◽  
张 宏 ZHANG Hong ◽  
...  
Keyword(s):  
Sodium Carbonate ◽  
Anhydrous Sodium Carbonate ◽  
Terbium Complexes

Study on Direct Reduction of Vanadium Slag

2015 ◽  
Vol 815 ◽  
pp. 254-262
Author(s):  
Neng Wei Wang ◽  
Guo Wei Li ◽  
Min Xian Fang
Keyword(s):  
Sodium Carbonate ◽  
Direct Reduction ◽  
Process Condition ◽  
Optimum Process ◽  
Process Conditions ◽  
Vanadium Slag ◽  
Anhydrous Sodium Carbonate ◽  
Factors Affecting ◽  
Roasting Temperature ◽  
Slag Reduction

In this paper the process of direct reduction of vanadium slag was adopted. The main factor was determined by uniform experimental design and single factor analysis, and then the optimum process condition was drawn by the test. The test results showed that the regression equation curve fitting of the experiment data was very significant, the main factors affecting the vanadium slag reduction (according to the primary and secondary order) was the content of anhydrous sodium carbonate, roasting temperature, roasting time and reduction of carbon content. The factors for the reduction of the optimum process conditions are the carbon coefficient 1.04, roasting temperature 1100°C, roasting reduction time 4h, 4% mass percent of anhydrous sodium carbonate and slag. Under the optimum conditions, the actual rate of weight loss and theory rate of weight were close to 0, the results could be reproduced, and the vanadium slag metallization rate was 75%~83%.

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