| 摘要 |
<p>A process for producing an inexpensive detergent builder in the form of a selected crystalline calcium carbonate is provided. Specifically, the process comprises the steps of: (a) feeding starting crystalline calcium carbonate into an apparatus having an internal chamber and air nozzles directed into the chamber; and (b) milling the crystalline calcium carbonate in the apparatus by inputting air at a pressure from about 1 bar to about 50 bar such that the crystalline calcium carbonate is converted to a rhombohedral crystalline structure with {1,0,-1,1} crystallographic indices, thereby forming the detergent builder.</p> |
