Process and apparatus for making red phosphorus

Details Process and apparatus for making red phosphorus Process and apparatus for making red phosphorus

C - Chemistry, Metallurgy

01

B

23/324, 23/384

C01B 25/023 (2006.01)

Patent

CA 1128291

ABSTRACT OF THE DISCLOSURE The invention relates to a process for making red phosphorus by subjecting molten yellow phosphorus to a thermal conversion reaction in a closed reaction zone. To this end, a hollow shaft-provided and closed ball mill is preheated to a reaction temperature within the range 280 to 590°C. Yellow phosphorus is continuously introduced into the ball mill through the hollow shaft in quantities per unit time through the hollow shaft temperature prevailing inside the ball mill to be main- tained without supply of heat from the outside. More particularly, decreasing quantities of yellow phosphorus are introduced per unit time at increasing temperature and increasing quantities of yellow phosphorus are in- troduced per unit time at decreasing temperature within the limits specified. Red phosphorus is allowed to cool inside the ball mill, water is poured over it and the whole is subjected to wet-grinding. An aqueous sus- pension of red phosphorus is finally removed from the ball mill.

345959

Affiliated with

Also associated with

Rating

Process and apparatus for making red phosphorus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and apparatus for making red phosphorus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for making red phosphorus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-824173