초록 ▼

A process for significantly improving the physical properties of formed particles is disclosed. The process includes adding an effective amount of an acid stable surfactant or an alkaline stable surfactant to a component of the material before drying the particles. The preferred particles are micros

A process for significantly improving the physical properties of formed particles is disclosed. The process includes adding an effective amount of an acid stable surfactant or an alkaline stable surfactant to a component of the material before drying the particles. The preferred particles are microspheroidal for use in fluid bed reactors, but can include granules and beads.

대표청구항 ▼

[ We claim:] [1.] A process for producing alumina comprising:mixing an effective concentration of anionic fluorohydrocarbon surfactant into an aqueous alum solution having 8.2 weight percent of aluminum oxide;feeding with agitation said mixed anionic fluorohydrocarbon surfactant and aqueous alum sol

[ We claim:] [1.] A process for producing alumina comprising:mixing an effective concentration of anionic fluorohydrocarbon surfactant into an aqueous alum solution having 8.2 weight percent of aluminum oxide;feeding with agitation said mixed anionic fluorohydrocarbon surfactant and aqueous alum solution into water heated to 45.degree. C. to obtain a pH of 3.0 to 3.5feeding with agitation aqueous sodium aluminate, having 18.3 percent sodium oxide and 20 percent aluminum oxide, into said mixed anionic fluorohydrocarbon surfactant and aqueous alum solution to obtain a pH of 9.0 of a combined slurry;filtering said combined slurry to obtain a filter cake;washing said filter cake with ammoniated water at 60.degree. C. and at a pH of 8;slurrying said filter cake; anddrying said slurried filter cake to form a free-flowing powder.