240 MINERALS YEARBOOK 1985 
 
pers When a quick release valve is opened ty covers three areas sulfur concretes
sul an explosive charge of compressed air is fur spray coatings and sulfur-extended
asexpelled into the structure. The sudden phalt as a paving material.~ powerful
release of energy into the material Fuller International Inc., Bethlehem,
PA, causes it to break away from the walls and a cement industry equipment
supplier, flow freely to the kiln. Benefits of the new announced the results
of its worldwide technology were reduced work force, in- search for ideas
on new ways to use cement. creased productivity, and decreased energy A total
of 540 entries were received from 24 consumption through improved heat trans-
countries. The first place award for the fer and air-material flow.~ most
original idea involved the use of port~ 
A new high-efficiency air separator, call- land cement for reducing sulfur
emissions ed the Sepax, was developed by F. L Smidth from fossil-fuel-burning
powerplants. The and Co. A/S. The separator was successfully second place,
granted for the idea closest to tested at the Sociedad Financiera y Minera
implementation, involved the use of portS A cement plant in Malaga Spain
Test land cement as an antistripping agent in results showed a 30% increase
in output asphalt mixes.8 
and a 20% reduction in energy consumption. The excellent performance was
due ~ of Commerce, In national Trade 
primarily to effective dispersion of material Administration. Construction
Review. V. 32, No. 1, Jan. 
ç ,i ç ~ 11 4 ~ ,~ Feb 1986,pp. 12.21. 
 e rom e m e riser uc. e 3Engineering News-Record. ENR Matenals Prices. 
separator was designed for easy integration V. 216, No.2, Jan. 9, l986,p.
40. 
with different plant configurations, not only ~ockI~r~cts. Cement International.
V. 89, No.4, Apr. 
for cement grinding but also for processing  5Brown, B. E., and L. J. Goldbeck.
Using Air Cannons on 
other materials.6 Cement Kiln Preheaters. Pit & Quarry, v. 78, No.2,
Aug. 
 Concrete.—The Bureau of Mines summa-  ~Jensen, W. S. Develop High
Efficiency Air Sepa 
rized its research on sulfur construction rator for GrmJ~ Systems Pit &
Quarry v 78 No 1 
materials as well as related research con-  7McBee, W. C., T. A. Sullivan,
and H. L Pike. Sulfur 
ducted by other Government organizations ~ 
and the private sector. The research activi- for New Uses of Cement. Nov.
1985, p. 30.