Granular potash

B. Wist, Ball-mill degradation test for quality control of granular potash products , (revised), PCS Potash, Saskatoon, Sask., Canada (1997). 

Table 15.2 lists the potash production from the major producing countries 13]. World production has declined with the economic transformation occurring in Central and Eastern Europe and the Commonwealth of Independent states (CIS) as a result of less consumption by those countries and production problems with Russia and East Germany. By 1994 the trend toward a higher percentage of total production from Canada and less from Russia and Germany had considerably increased— The consumption of potcdi, as indicated by Table 15.3, is dominated by Western Europe, Russia, Asia, and North America. Data on both imports and exports are listed in Table 15.4. The latter two areas represent the largest import markets Europe and Rus are primarily sip-plied by their own production. The U.S. price of granular potash is shown in F ure 15.1, (f.o.b. Saskatchewan), and it was fairly stable until Canada and Russia entered the market with large plants. Since then the oversupply has made the price quite erratic, but at least it had risen by 1994 to a point where most of the operators could make a profit.

Figure 15.2. Comparison of Sizes of Fertilizer Granular Material With "Coarse and Granular Potash.

Diammonlum Phosphate vs, "Granular Potash Dlammonlom Phosphate vs. "Coarse" Potadi... 

Fig. 18. TVA-type cogranulation process with preneutralizer, as used for production of granular mixed fertilizers. Feed materials such as ammonium sulfate, ammonium nitrate, urea, superphosphates, sulfuric acid, and potash are used.

CAUSTIC POTASH, dry, solid, flake, bead, or granular... 

Ammonium orthophosphates are highly concentrated sources of plant food containing as much as 18% N and 48% P2OS. Ammonium phosphates are generally made by reacting phosphoric acid and anhydrous ammonia. Potash salts may be added if desired and the final product is granular and free flowing. 

Figure 52. Abrasion values obtained with twelve test methods of granular rock salt and potash samples...

While for more than 30 years granulation of potash by compaction has been an accepted method for the manufacture of granular products with tight quality specifications and is used in the majority of potash mines worldwide, this technology only slowly finds acceptance for mixed fertilizers although... 

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