US3355212A

In addition `to known bedded deposits of 90-95% pure carnallite, there are extensive deposits of carnallite with halite (NaCl) and sylvite (KCl) interbedded or interspersed. These may contain up to 30% sylvite and 40% halite. The solution method of the invention is applicable to the mining of carnallite from such mixed deposits.

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Controlling Carnallite and Halite crystal sizes in solar …

Given that Carnallite and Halite form crystal of different sizes, this process could be made much simpler and cheaper if a technology ... enriched in Carnallite, is dissolved in water followed by potash precipitation. The finer fraction, enriched in Halite, is used to remove the high content of Halite either by reverse flotation or by hot ...

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Carnallite & Sylvinite Ore – Potash Flotation

In accordance with this mission, a research program was conducted to investigate a new direct flotation method for the recovery of potash without prior removal of insoluble …

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เกลือหิน

ส่วนที่เป็นเกลือแกง หรือที่รู้จักกันว่าเกลือสินเธาว์ เรียกว่าแร่ เฮไลต์ (Halite) มีองค์ประกอบทางเคมีคือ โซเดียมคลอไรด์ (NaCl ...

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CARNALLITE FROTH FLOTATION OPTIMIZATION …

The current study aims to provide plantoperators with a better understanding of flotation process. In this investigation, several laboratory experiments were conducted that covered several parameters and the best …

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Method of decomposing carnallite and mixtures containing carnallite

the carnallite is mixed with various contaminants, depending on the initial composition and the concentration. Concentration is carried out by any suitable means. Included are solar evaporation in diked ponds, evaporation by triple effect evaporators, by submerged combustion or by any other means suitable to increase the concentration to a density at which carnallite crystallizes.

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Improvement of sylvite flotation from halite by starvation …

1. Introduction. SDIC Xinjiang Lop Nur potash Co. Ltd. (SLNP) is the biggest K 2 SO 4 production company in the world with a K 2 SO 4 yield of 1.6 million ton per year. 1 The K 2 SO 4 of SLNP is obtained by the conversion of sylvite (KCl) and ite (K 2 SO 4 ·MgSO 4 ·6H 2 O) with the addition of water, 2 among which sylvite is gained from a carnallite (KCl·MgCl 2 ·6H …

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Mineral Processing and Extractive Metallurgy Review

In this investigation, several laboratory experiments were conducted that covered several parameters and the best cell efficiency was achieved in terms of halite removal and carnallite...

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Thesolubility of halite as a function of temperature in the

The new parameters are used to predict the effect of temperature on halite precipitation in the lake from both the evaporating surface layer and the entire upper water body. The calculated weight of halite expected to precipitate before the onset of carnallite precipitation is on the order of lO*O t.

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Carnallite Flotation of Khur Biabanak Potash Complex …

necessary to remove the halite from the carnallite ore before decomposition. In this work, a flotation method was developed using kimiaflot 619 as a collector for flotation of halite and sylvite from carnallite. A new collector was synthesized for carnallite flotation and compared with …

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Extraction of Lithium from Brine—Old and New …

Halite and sylvite (KCl) as a mixture of NaCl and KCl called sylvinite; Halite, sylvite and potassium lithium sulphate (KLiSO 4); Halite, kainite (KCl⋅MgSO 4 ⋅2¾H 2O) and lithium sulphate (Li 2SO 4 ⋅H 2O); Halite, carnallite (KCl⋅MgCl 2⋅6H 2O) and lithium sulphate; Bischoffite (MgCl 2⋅6H 2O); Bischoffite and lithium carnallite ...

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Extracting Mg isotope signatures of ancient seawater from marine halite

To ensure complete removal of Ca and Na, the procedure was repeated up to three times for high Ca content samples. ... Nonetheless, a thick sequence of carnallite sandwiched between halite layers has been reported from evaporative basins (Cendon et al., 1998; Hardie, 1990). So, it is possible that the halite inclusions record isotopically ...

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(PDF) Salt Crystallization Sequences of Nonmarine …

Four salt assemblages were identified in the isothermal evaporation experiment: halite → halite + hexahydrite → halite + bischofite + carnallite → bischofite.

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Economic geology of southern Saskatchewan potash mines

A second regional dissolution trend resulted in removal of up to 200 m of halite-anhydrite section across the southern Saskatchewan area of the northern Williston Basin. ... of the upper Prairie Evaporite Formation are characterized by beds with abrupt lateral and vertical changes from carnallite-halite (carnallitite) to sylvite-halite ...

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Full range of AkzoNobel optimised reagents, collectors at …

Long-chained collectors for summer conditions include Lilaflot® FAB 53 and Armeen® M. For the removal of halite from carnallite, Armoflote® 619 provides the necessary reverse flotation. "Moreover, a new application currently being pursued is reverse flotation of halite from sylvinite," Danilov reports.

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Fixed and changeable experimental parameters | Download …

Carnallite-kainite-halite ore is enriched by reverse flotation in aqueous solutions of magnesium chloride with a density of 1285–1295 kg/m 3 and pH 3–4 using the halite collector of the ...

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Implications for the origin of secondary sylvite from a …

A core sample of carnallite ore was obtained by drilling from a pot-ash deposit in Vientiane, Laos. Its composition (Table 1) indicates that the core sample mainly includes carnallite and halite. The content of water-insoluble materials and sylvite in the carnallite ore were b1%, and b0.3%, respectively. The octadecyl amine (ODA; 98% pure; Dachat

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Evaluation of a novel morpholine-typed Gemini surfactant as …

The carnallite mineral for flotation separation tests was obtained from Qarhan Salt Lake (Qinghai Province, China). The ingredient of carnallite ores by mineralogy analysis were largely 78.27% carnallite (KCl·MgCl 2 ·6H 2 O), 19.94% halite (NaCl), 1.02% gypsum (CaSO 4 ·2H 2 O) and 0.77% sylvite (KCl). The bench-scale flotation separation ...

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Origin of Potash Deposits

In some deposits various other potash double salts are also present in trace to minor quantities, as well as occasionally quite extensive formations of the insoluble mineral poly halite, K 2 SO 4 · MgSO 4 · 2CaSO 4 · 2H 2 O. In a few locations carnallite and some sylvinite occurs with halite and tachyhydrite (CaCl 2 · 2MgCl 2 · 12H 2 O.)

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(PDF) The Sensitivity of Temperature to Tachyhydrite …

The results showed (1) a halite, sylvite, and carnallite stage at 25°C; (2) a halite, sylvite, carnallite, and bischofite stage at 35°C; and (3) a halite, sylvite, carnallite, bischofite, and ...

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carnallite: Topics by Science.gov

The bischofite-carnallite-halite mixtures, at their turn, were stronger than carnallite, and hence substantially stronger than pure bischofite. For bischofite as well as carnallite, we observed that during stress relaxation, the stress exponent nof a conventional power law changed from ˜5 at strain rate 10-5 s-1 to ˜1 at 10-9 s-1. The ...

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Economic geology of southern Saskatchewan potash mines

A second regional dissolution trend resulted in removal of up to 200 m of halite-anhydrite section across the southern Saskatchewan area of the northern Williston Basin. ... The southern Saskatchewan area was favorable for the up-section accumulation of halite-sylvite-carnallite facies as a late stage evaporitic mineral sequence following more ...

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The Sensitivity of Temperature to Tachyhydrite …

O. The results showed (1) a halite, sylvite, and carnallite stage at 25 °C; (2) a halite, sylvite, carnallite, and bischofite stage at 35°C; and (3) a halite, sylvite, carnallite, bischofite, and tachyhydrite stage at 50°C. These results indicated that (1) a hot state is favorable for tachyhydrite formation, (2) tachyhydrite occurs in the late

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Armoflote 619

Armoflote 619 is a selective collector for flotation of halite from potash salts, especially potassium double salts such as carnallite, ite and kainite. Armoflote 619 floats halite (NaCl) from …

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Carnallite Flotation of Khur Biabanak Potash Complex …

The amount of halite (NaCl, 15-30%), (KCl, 10-15%), sylvite, and water-insoluble clay usually contains the carnallite ore [26]. The carnallite ores should be concentrated because the cold decomposition process usually requires less than 4-6% halite [26]. Therefore, it is necessary to remove the halite from the carnallite

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How to Recover Potash from Carnallite

Methods compatible with existing commercial potash processes must be devised to remove or treat these insoluble slimes before potash flotation to improve potash recoveries and reduce processing costs. ... Petrographic and X-ray diffraction analysis of the carnallite ore indicated that halite (NaCl) carnallite (KCl·MgCl2·6H2O), and sylvite ...

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Mineral Processing and Extractive Metallurgy Review

order to achieve the best cell efficiency in terms of halite removal and carnallite recovery. Tests were conducted at the Al-Balqa' Applied

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Potash Mining

Ores containing carnallite may be pre-treated to remove magnesium chloride and give simple potassium chloride and halite, which then can be floated with tallow amine. Potash flotation circuits always have both rougher and cleaner cells.

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Carnallite Froth Flotation Optimization and Flotation …

The best flotation cell efficiency in experiments was achieved in term of Halite removal and Carnallite recovery. Tests were covered: Agitator speed, pulp density, reagent quantity, …

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Pre-treating Dead Sea water before entering evaporation …

In that way, Carnallite extraction would be more efficient than currently available, while not increasing the extent of evaporation, and reducing Halite removal costs. This is a Prize Challenge which requires a written proposal to be submitted.

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CARNALLITE (Hydrated Potassium Magnesium Chloride)

Carnallite is relatively easy to distinguish from other evaporate minerals. Its taste is bitter and it has no cleavage, unlike halite. Carnallite is extremely light with a specific gravity of only 1.6 and it also shows a violet flame result when it is put in a gas flame due to its potassium content, unlike kieserite and other non-potassium salts.

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Evaluation of a novel morpholine-typed Gemini …

Carnallite is an important source of KCl fertilizer production in industry. Reverse flotation has been used to separate halite (NaCl) impurities from carnallite (KCl·MgCl 2 ·6H 2 O) for carnallite resources. However, progress in the carnallite resource reverse froth flotation has been constrained by the inherent limitation of

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Rare earths release from dissolving atmospheric dust and …

After the removal of crystals in contact with the cable, an aliquot of clean crystals was collected in a clean vial for analysis. ... The Y/Ho molar ratio progressively rises from 59.4 (feeding brine) to 162.7 along the halite-to-carnallite mineral changing. Fig. 3 B shows strong positive La anomalies especially in P#6 and P#7 samples and lower ...

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Implications for the origin of secondary sylvite from a simulation …

A core sample of carnallite ore was obtained by drilling from a potash deposit in Vientiane, Laos. Its composition (Table 1) indicates that the core sample mainly includes carnallite and halite.The content of water-insoluble materials and sylvite in the carnallite ore were < 1%, and < 0.3%, respectively.The octadecyl amine (ODA; 98% pure; Dachat Chemical Inc., Zhejiang, …

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