Minerals | Free Full-Text | The Correlation of Roasting ...

Apr 01, 2018· The low temperature molten salt method was used to extract potassium from K-feldspar ore, and some related factors including mass ratio between NaNO 3, NaOH, H 2 O and K-feldspar ore, particle size of K-feldspar ore, reaction temperature and time were investigated, respectively. In addition, the optimum condition for this method was determined by a series of condition experiments.

The Extraction of Potassium from Feldspar by Molten Salt ...

Production of potassium fertilizer (potash) from ultrapotassic syenites as a potential alternative to limited soluble salt deposits is receiving growing attention due to their potential to reduce the cost of potash, improve agriculture sustainability, and mitigate complex mining operations. Potassium feldspar (K-feldspar), which occurs in ultrapotassic syenite in high concentration (∼85 wt ...

The extraction of potassium from K-feldspar ore by low ...

Dec 21, 2016· Extraction of Potassium from Potash Feldspar by Ion-exchange[J]. Chinese Journal of Applied Chemistry, 2003, 20(4): 373–375. Google Scholar [10] Hu TX, Yu JG. Experimental Study on Decomposition of K-feldspar with CaCl 2 and NaCl for Extraction of Potassium[J]. The Chinese ...

EXTRACTION OF POTASSIUM FROM FELDSPAR AND …

As much as approximately 41% of the potassium was volatilized in 40 min at 1100 ℃. The mass ratio of CaCl 2 / K-feldspar ore significantly affected the extraction. At a mass ratio of 1.15 and 900 ℃, the potassium extraction reached 91% in 40 min, while the extractionwas reduced to only 22% at the theoreticalmass ratio of 0.2.

Extraction of potassium from K-feldspar through potassium ...

Extraction of potassium from the feldspar was proposed for agricultural application. Potassium perchlorate has very little solubility in water; it is necessary to alter the insoluble salt into water-soluble salt of potassium. Therefore, potassium perchlorate was subjected to thermal decomposition at temperature around 600 °C in the furnace for ...

The Extraction of Potassium from Feldspar by Molten Salt ...

When the feldspar sample was roasted at 900°C with sodium chloride alone, the extraction of potassium was limited to 61%. The extraction could go up to 92.5% by the addition of phosphogypsum along with sodium chloride. The optimum conditions of potassium extraction …

Microwave-assisted extraction of potassium from K-feldspar ...

Nov 11, 2015· Ciceri studied potassium-bearing feldspar obtained from syenite, a natural rock. The sample was from Brazil. Syenite can be ground into a fine …

Potassium Extraction from K-Feldspar Ore

Feldspar is a kind of silicate minerals that contains calcium, sodium and potassium, there are many categories of Feldspar including albite, anorthite, etc. Feldspar mining process mainly applying the flotation process, and Feldspar mining machines mainly including jaw crusher, ball mill, spiral chute, and concentrating table, etc.

Research finds feldspar releases potassium at a higher ...

Keywords: potassium, feldspar, leucite, extraction, activation method, milling, roasting INTRODUCTION Fertilizer is an important commodity in supporting national food security. One of the main elements of fertilizer needed in large quantities by plants as a macro element is potassium (K) but it still relies on imports. Data regarding potassium ...

Extraction of potassium from K-feldspar via the CaCl 2 ...

The extraction of potassium from K-feldspar via a calcium chloride calcination route was studied with a focus on the effects of the calcination atmosphere, calcination temperature and time, mass ...

Studies on Extraction of Potassium from Feldspar by Roast ...

Sep 01, 2015· The extraction of potassium from K-feldspar via a calcium chloride calcination route was studied with a focus on the effects of the calcination atmosphere, calcination temperature and time, mass ratio of CaCl 2 to K-feldspar ore and particle size of the K-feldspar ore. The results demonstrated that a competing high-temperature hydrolysis reaction of calcium chloride with moisture in a damp ...

EXTRACTION OF POTASSIUM FROM FELDSPAR AND …

Production of potassium fertilizer (potash) from ultrapotassic syenites as a potential alternative to limited soluble salt deposits is receiving growing attention due to their potential to reduce the cost of potash, improve agriculture sustainability, and mitigate complex mining operations. Potassium feldspar (K-feldspar), which occurs in ultrapotassic syenite in high concentration (∼85 wt ...

Studies on Extraction of Potassium from Feldspar by Roast ...

May 01, 2002· Preparation of potassium sulfate and zeolite NaA from K-feldspar by a novel hydrothermal process. International Journal of Mineral Processing 2016, 155, . DOI: 10.1016/j.minpro.2016.08.017. S. K. Jena, P. K. Misra, B. Das. Studies on Extraction of Potassium from Feldspar by Roast-leach Method Using Phosphogypsum and Sodium Chloride.

The Extraction of Potassium from Feldspar by Molten Salt ...

Wang Z, Zhang Q, Yao Y et al 2017 The extraction of potassium from K-feldspar ore by low temperature molten salt method Chinese Journal of Chemical Engineering S. Google Scholar. Yu X, Zhao L, ...

Extraction of potassium from K-feldspar via the CaCl2 ...

The extraction of potassium from K-feldspar via a calcium chloride calcination route was studied with a focus on the effects of the calcination atmosphere, calcination temperature and time, mass ratio of CaCl 2 to K-feldspar ore and particle size of the K-feldspar ore. The results demonstrated that a competing high-temperature hydrolysis reaction of calcium chloride with moisture in a damp ...

Experimental Kinetic Analysis of Potassium Extraction from ...

leaching of feldspar resulted in production of slow releasing potassium compounds.2,10 In order to overcome low and slow release of potassium from acid and base leaching, respectively, researchers employed salt roasting of the aluminosilicate matrix followed by water leaching of …

Sustainable Process for the Extraction of Potassium from ...

Studies on Extraction of Potassium from Feldspar by Roast-leach Method Using Phosphogypsum and Sodium Chloride. Mineral Processing and Extractive Metallurgy Review 2016, 37 (5), .

Studies on Extraction of Potassium from Feldspar by Roast ...

Ca(OH)2 on potassium extraction from feldspar ore that was ground to a grain size below 74 microns. The roasting temperature and duration were selected as 900 C and 1 hour, respectively. They achieved 36% and 28% potassium recovery from 9.8% K2O bearing feldspar …

Minerals | Free Full-Text | Extraction of Potassium from ...

Jul 25, 2017· Potassium feldspar can also be obtained from pegmatites or underground pockets that are rich in vapor allowing the growth or huge mineral crystals. Its mining has little negative impacts on the environment. Summing Up. These are the main properties, uses, and facts you need to know about potassium feldspar mineral. Being a profoundly abundant ...

Feldspar Extraction, Feldspar Processing, Process of ...

The invention discloses a method for decomposing potassium feldspar to extract soluble potassium, comprising the following steps of: crushing and grinding potassium feldspar used as a raw material; mixing with the ground potassium feldspar, calcium chloride and sodium chloride which are used as a combined assistant, and fully stirring, wherein the ratio by mass part of the potassium feldspar ...

A PROCESS FOR EXTRACTION OF POTASSIUM FROM FELDSPAR

When the feldspar sample was roasted at 900°C with sodium chloride alone, the extraction of potassium was limited to 61%. The extraction could go up to 92.5% by the addition of phosphogypsum along with sodium chloride. The optimum conditions of potassium extraction were found to be, particle size 100 µm, roasting temperature 900°C and ...

The Extraction of Potash and Alumina from Feldspar ...

A pyrometallurgical route for the extraction of potassium from microcline was investigated. The reagents used were microcline, calcite and chlorine gas. Isothermal and non-isothermal chlorination assays were performed using experimental equipment adapted for working in corrosive atmospheres. The effects of temperature and reaction time on the chlorination reaction of the microcline-calcite ...