| 摘要 |
FIELD: chemical industry, agriculture, in particular hardness removal agent and saltlick for cattle. ^ SUBSTANCE: salt with pH 4-10 is pressed under 5000-2500 N/cm2. Salt contains NaCl, less than 0.1 wt.% of water, and iron-ammonium complex of polyhydroxycarboxylic acid in amount sufficient to obtain non-caking salt. As iron-ammonium complex of polyhydroxycarboxylic acid iron-ammonium citrate with molar ratio of iron to citrate-ion from 0.5 to 2 and molar ratio of ammonium to citrate-ion from 0.5 to 2 may be used. Finished product contains 0.1-20 mg/kg of iron and has form of briquettes, balls, bars, crushed plates, tablets, etc. Invention makes it possible to provide good formability under high pressure and conserve pressed product shape in moist medium for a long time. ^ EFFECT: products from salt non-caking at storage and conveyance. ^ 11 cl, 6 tbl, 2 dwg, 7 ex |
