| 摘要 |
<p>Finely divided ore blends containing chemically active magnesium oxide and calcium oxide are physically combined with a critical amount of water prior to reaction with acetic acid. Intermediate products range in physical consistency from putty-like masses to viscous liquors, defending upon the relative fraction of magnesium oxide in the ore feed. Intermediate products freeze to form hydrates of magnesium calcium acetate, the freeze times being dependent upon a number of chemical and physical parameters. Product drying requirements range from minimal drying to none at all, depending upon the magnesium fraction in the products. Products are nonfriable and have excellent crush strength, and are suitable for storage, shipping and aplication in chemical deicing as well as other end use aplications where crude low-coat materials are called for. A unique situation centers around the composition corresponding to the magnesium mol fraction of 0.8. This material requires no drying and exhibits an extraordinary high crush strength. Additionally, as much as 75% by weight of traction agent (sand) can be successfully incorporated into this material without the aid of chemical binders.</p> |
