Process of making two uniform grades of calcium magnesium acetat

Details Process of making two uniform grades of calcium magnesium acetat Process of making two uniform grades of calcium magnesium acetat

1981-11-02

1983-06-21

Kittle, John E.

Compositions

Frost-preventing, ice-thawing, thermostatic, thermophoric,...

423158, 423173, 423175, 423430, 423593, 423635, 106 13, 562607, 562608, C09K 318, C01F 500, C01F 1100

Patent

active

043893236

ABSTRACT:
A process of making different grades of calcium magnesium acetate deicing agents, having substantially uniform but different calcium-to-magnesium mole ratios, from limestone having varying proportions of calcium carbonate and magnesium carbonate, is provided wherein limestone containing calcium and magnesium carbonates is finely divided, mixed with water to form an aqueous suspension of limestone, vigorously agitated and reacted with excess acetic acid. The reaction is completed by adding to the reaction batch about 30% of the molar equivalent of calcined finely divided limestone base to produce a calcium magnesium acetate salt solution having a calcium-to-magnesium mole ratio much greater than one. The insolubles from this first reaction are removed, calcined and reacted with acetic acid in a second reaction to produce a calcium magnesium acetate salt solution having a calcium-to-magnesium mole ratio substantially equal to one.

REFERENCES:
patent: 4239736 (1980-12-01), Fenske

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