Detail of "14977-37-8"

Reference

Potassium sulfate crystals and a growth-stimulating agent for potassium sulfate crystals

Potassium sulfate crystals and a growth-stimulating agent for potassium sulfate crystals. Meng, Hsi; Dancy, William B. (International Minerals and Chemical Corp., USA). Ger. Offen. DE 3426855 A1 14 Feb 1985, 18 pp. (German). (Germany). CODEN: GWXXBX. CLASS: ICM: C01D005-00. APPLICATION: DE 84-3426855 20 Jul 1984. PRIORITY: US 83-519445 2 Aug 1983. DOCUMENT TYPE: Patent CA Section: 19 (Fertilizers, Soils, and Plant Nutrition) Section cross-reference(s): 49 In manuf. of K sulfate crystals for the fertilizer industry by reaction of KCl soln. with solid langbeinite [14977-37-8] at 45-55°, the size of the crystals is increased by carrying out the reaction in the presence of a growth-stimulating agent contg. monosulfonated or monosulfated interface-active agent and a neutralized disulfonated interface-active agent in a wt. ratio of ~0.14-0.60. Thus, 350 g KCl was dissolved in 1 kg distd. water at 45°, and 0.78 g Dowfax 2A1 (Na alkyldiphenyloxide sulfonate) [12626-49-2], which was fortified with sufficient monosulfate to bring the wt. ratio to 0.46, was added. Diesel oil was used as an antifoaming agent, and 350 g ground langbeinite (<0.074 mm) was added. The mixt. was heated to 55°, and the K2SO4 crystals obtained were sepd. by centrifugation. The percentages of crystals retained by sieves of 0.833, 1.168, 1.651, and 2.362 mm were 55, 49, 36, and 3, resp., whereas in the control (produced with 1.09 g Dowfax 2A1, which contains contaminating monosulfate at a wt. ratio of only 0.053 to the disulfonate) only 0.5% of the crystals were retained by an 0.833-mm sieve.

Correlation of potassium-bearing strata using the geochemical coefficients bromide ion ′ 1000/chloride ion and sulfate ion/chloride ion

Correlation of potassium-bearing strata using the geochemical coefficients bromide ion ′ 1000/chloride ion and sulfate ion/chloride ion. Petrichenko, O. I.; Kovalevich, V. M.; Stupnitskii, V. M. (Inst. Geol. Geokhim. Goryuch. Kopalin, Lvov, USSR). Dopov. Akad. Nauk Ukr. RSR, Ser. B: Geol., Khim. Biol. Nauki, (9), 794-7 (Ukrainian) 1977. CODEN: DANND6. DOCUMENT TYPE: Journal CA Section: 53 (Mineralogical and Geological Chemistry) The title geochem. coeffs. were used to quantify the recurrent SO42-, Br-, and Cl- distribution patterns in the Neogene terrigenous K-bearing sediments of the southeastern Forecarpathian depression. High sulfate concns. characterize the langbeinite [14977-37-8]- and kainite [1318-72-5]-bearing lower horizons of the K-rich strata. The upper horizons, contg. kainite and sylvite [14336-88-0], are enriched in Cl and Br. This geochem. distribution pattern provides a stratigraphic marker, useful in correlation, structure mapping, and sedimentation studies.