Abstract: The invention relates to a flotation process for removal of slimes from potash ores which includes a step in said process wherein a collector is used which is a mixture of ethoxylated fatty amines having the formulae (I) wherein R1 and R2 are, independently, a hydrocarbyl group having 1-22 C-atoms, and n is on average above 15 and ...

INTRODUCTION Selective flocculation as a method of desliming potash flotation plant feed has been in commercial use since November, 1974.l It was installed to replace a 1ess efficient mechanical desliming process. While most plants operating in the Saskatoon area of Saskatchewan were designed for 4% to 5% insolubles in practise the quantity and …

Alternatively, slimes can be floated ahead of potash flotation. Flotation recoveries of sylvite are commonly in the range of 85%, while losses can occur in slimes, flotation tailings and make-up of process brine. ... Ores containing free coarse-grained sylvite are generally screened, whereas both fine and coarse fractions are conditioned and ...

The attrition process both with dispersing reagent addition and without it has been studied on potash ores of Verkhnekamsk, Gremyachinsk (Russia) and Tubegatan (Uzbekistan) deposits. ... Slimes attrition with dispersing reagents addition was found to affect positively both ore desliming performance and sylvite flotation results. The slimes ...

Institute of Resources and Environmental Engineering, Shanxi University, No 92 Wucheng Road, Taiyuan, Shanxi 030006, China; Institute of Resources and Environmental Engineering, Shanxi University, No 92 Wucheng Road, Taiyuan, Shanxi 030006, China; Department of Metallurgical Engineering, College of Mines and Earth …

Potash ores of the Verhnekamsky potash deposit contain sylvite (KCl), halite (NaCl) and water insoluble impurity (up to 8 %), presented silicate- carbonate minerals, easily slimed by ore crushing in rod mills. ... The application of an organic depressor to the greatest degree of decreasing the absorption amine on the slimes and to the smallest ...

SUMMARY AND CONCLUSIONS The results from the preliminary testing suggest that the removal of insoluble slimes from sylvinite ores by ASH flotation can be …

Laboratory testing by the Federal Bureau of Mines has shown that the removal of insoluble slimes using selective flocculation and flotation is a viable method for treating low-grade potash ores which have a high content of water-insoluble impurities. Results indicated that up to 85 percent of the insoluble slimes could be removed from sylvinite ore containing 5 …

7.2.1 Potash Ores. Potash is mined from potash deposits and as a by-product from rock salt (i.e. halite) ores. The nature of these deposits largely stipulates the mining method. ... phosphatic clay s are also referred to as fines or slimes. The production of slimes is, of course, minimal for those deposits where the clay content is ...

Slime coating is a significant phenomenon in froth flotation. The adverse effects of slime coating, by which a value mineral is covered by slimes and prevented from direct contact with collectors and/or air bubbles, have been recognized for decades. It happens ubiquitously in the flotation of various minerals, including sulfide minerals ...

The removal of slimes (water-insoluble minerals) from high slime-containing potash ores from Qinghai Province, PRC, was investigated using flotation. A higher slime flotation recovery was obtained when a surfactant (polyoxyethylene fatty acid ester)–kerosene water emulsion was used as the collector. The stabilities of the …

Depressants play an important role in effecting selective sylvite flotation in potash ore processing. Long chain polysaccharide depressants have been used effectively in sylvite …

Flotation is the basic treatment method for potash and potash-magnesium ores. Currently about 200 million tones of water-soluble resources per annum are produced by flotation. ... Panteleeva, N.N., Gurkova, T.M., 1999. Use of polymer reagents for processing of potash ores containing clay slimes. 38th Annual Conference of …

The Bureau of Mines conducted research on techniques for recovering potash values from high-insoluble-slimes-bearing domestic carnallite ores. In the first phase of the study, two techniques were devised: (1) a method where the insoluble slimes were depressed during potash flotation and (2) a method where insoluble slimes were …

Selective flocculation and flotation of slimes from sylvinite ores DE DE2309583C3 (de) : : Verfahren zur Abtrennung von Tonschlamm aus Sylvinit-Roh salzen ... Collector for flotation of clay minerals from potash ores US8720694B2 (en) : : Cytec Technology Corp. ...

These ores, containing 13 to 22 percent K2O and 3 to 7 percent clay slimes, cannot be effectively processed by current commercial flotation methods because of their high slime content. A solution to this problem was shown to be the use of two-stage moderate scrubbing conditions and washing of the ore as opposed to strenuous attritioning.

"This paper examines the development of two new selective flocculation techniques for recovering KCI values from low grade carnallite potash ore.Direct recovery of KCI was achieved using one of two mid-range molecular weight polymers, one non-ionic and the other strongly cationic, in conjunction with the same selective anionic dispersant. …

The most important type of potash ores, sylvinite, contains sylvite, halite and a small percentage of insoluble gangue [sulfates (anhydrite), carbonates (dolomite), and clay minerals]. Primary normal long-chain amines are exlusively utilized to float sylvite from halite, but since mines are also adsorbed by insoluble slimes, the process requires prior …

Abstract. The modern processing of sylvinite and other potash ores is usually a comparatively simple and standardized procedure, practiced in much the same way at most potash plants. In the early days of the industry, and still with some operations having complex ores or to process fines or waste streams, the ore was given a hot leach, the ...

Flotation of Insoluble Slimes from Potash Ore. Filtration of the insoluble slimes flotation concentrates recovered 87 to 90 percent of the brine. Flotation …

These high-clay ores, containing 13 to 20 percent K2O and 3 to 7 percent clay slimes, cannot be effectively processed by current commercial flotation methods. The present concentration processes for potash minerals in Carlsbad relate mainly to ores containing 1 percent or less of clay-slimes with a K2O content of 18 to 25 percent that …

Abstract. The low grade potash ores contain large amount of fine water insoluble minerals, which was defined as slime here. The removal of the slime from the …

The Bureau of Mines investigated the concentration characteristics of high-clay sylvinite ores from four potash companies operating in the Permian Basin near Carlsbad, N. Mex. These ores, containing 13 to 22 percent K20 and 3 to 7 percent clay slimes, cannot be effectively processed by current commercial flotation methods because of their high …

4.5 Slimes in the Flotation of Potash Ores 32 V . 4.5.1 Mineralogical Composition of the Slimes 33 4.5.2 Clay Minerals 34 4.5.3 Other Water Insoluble Minerals 35 4.6 Effect of Slimes on Potash Ore Flotation 35 4.7 Scrubbing and Desliming 37 4.8 Flocculation/Flotation of Slimes 39

The low grade potash ores contain large amount of fine water insoluble minerals, which was defined as slime here. The removal of the slime from the low grade of potash ores (KCl < 10 %; slime > 40 %) from the Mahai Basin, Qinghai Province, PRC, was investigated using flotation. The characteristics of the slime sample, which was extracted …

Natural potash evaporites are a typical part of a brine evaporation series, crystallizing at the higher concentration or bittern end, either at the surface (primary salts) or in the shallow subsurface (secondary salts). ... ores and refined products, ... and the type and the amount of insoluble slimes (such as clay, anhydrite, dolomite, silica ...

In this regard, laboratory testing by the Bureau of Mines has shown that the removal of insoluble slimes using selective flocculation and flotation is a viable method for treating …

The use of low solubility amines and presence of clay minerals in the ores lead to non-selective adsorption of the collector on the slime and significantly increase …

The removal of the slime from the low grade of potash ores (KCl < 10 %; slime > 40 %) from the Mahai Basin, Qinghai Province, PRC, was investigated using flotation. The characteristics of the slime sample, which was extracted from the potash ores sample, were examined by X-Ray Fluorescence Spectrometry and X-Ray Diffraction.

The Bureau of Mines devised a direct flotation method for treating low-grade carnallite (KCl*MgC12*6H20) and sylvinite (a mixture of KC1 and NaCl) ores characterized by a high content of water-insoluble impurities. The procedure consists of flocculation-depression of the insoluble slimes; decomposition leach (carnallite only); potash rougher, cleaner, and …

The flotation process for beneficiation of potash ores was developed in United States and Russia concurrently in the early 1930s. In 1934, Potash Corporation of America applied flotation process in a commercial scale (Tippin R.B. and Huiatt J.L). ... The main challenges in potash flotation are the recovery of potash from slimes, flotation ...

Particles up to 2.3 mm can be floated and about 50% of flotation feed can be removed in the rougher stage in few minutes. The main challenges in potash flotation are the …

DOI: 10.1016/0892-6875(94)00111-O Corpus ID: 96385456; Removal of insoluble slimes from potash ore by air-sparged hydrocyclone flotation @article{Yalamanchili1995RemovalOI, title={Removal of insoluble slimes from potash ore by air-sparged hydrocyclone flotation}, author={M. Rao Yalamanchili and Jan D. Miller}, …