SIDNEY S COHEN
Engineering in Allentown, PA

4595416, Jun 17, 1986

Oct 1, 1984

6/655820

Sidney M. Cohen - Allentown PA

Fuller Company - Bethlehem PA

C04B 736

106100

A method and apparatus for producing cement which includes intermixing the cement forming raw materials with water, coal or coke and cement as a binder and forming this mixture of materials into nodules by pelletizing or extrusion. The system is particularly designed for use in making white cement where raw materials low in coloring compound are used as raw feed. The nodules are then sized to obtain a feed material having a size range on the order of one quarter inch by 14 mesh which is suitable for use in a fluidized bed reactor. The nodulized raw material is thermally processed in a fluidized bed reactor at temperatures in the range of approximately 2500. degree. to 2700. degree. F. for white cement and 2350. degree. -2450. degree. F. for typical gray Portland Cement.

4626198, Dec 2, 1986

Sep 20, 1985

6/778466

Sidney M. Cohen - Allentown PA

Fuller Company - Bethlehem PA

F27B 1400, F27B 702, C04B 3500, C04B 3502

432 13

An improved process and apparatus for producing sintered material such as dead burned clay, dolomite, magnesite or periclase with the highest particle specific gravity capable from each material. A grinding mill produces raw material which is 100% minus 20 mesh. The ground raw material is supplied to a suspension type preheater and then to a stationary flash calcining system where the material is soft burned at temperatures in the range of 1000. degree. to 1200. degree. C. From the calcining system, the calcined material is immediately supplied to hot briquetting machine where briquettes or nodules are formed. The hot nodules at a temperature of approximately 800. degree. C. are then immediately supplied to a rotary kiln which serves as a sintering furnace where the soft burned material is dead burnt at a temperature in the range of 1650. degree. to 1850. degree. C. Hot spent combustion gas from the sintering furnace is supplied to the calcining furnace to serve as preheated secondary air for combustion. The spent hot gas from the calcining furnace is used in the suspension preheater to preheat the raw material.

5118288, Jun 2, 1992

Aug 6, 1991

7/741104

Anthony F. Litka - Hanover MA
Sidney M. Cohen - Allentown PA

Gas Research Institute - Chicago IL

F27D 108

432 96

A suspension shaft furnace and process for producing clinkers from discrete pellets of cement-forming batch materials, the furnace having a top vertical shaft section comprising a pellet-feeding and preheating zone, an intermediate fluidized bed section containing fuel inlet conduits for clinkering of the pellets in a fluidized bed, an air-permeable clinker-impermeable support for supporting the pellets as a fluidized bed, and a lower clinker-cooling section beneath the fluidized bed section. Clinker-discharge means permit the gravity flow of clinkers from the top of the fluidized bed down into a cooling zone in the cooling section. Air inlet means supply a combustion-supporting cooling gas up through the cooling zone, to cool the clinkers therein, and upstream through the fluidized bed section to support the combustion of fuel at the fuel inlet conduits. Heated combustion supporting gas passes upstream to the vertical shaft section to heat pellets being fed downstream and regulates their speed and dwell time prior to their entry into the fluidized bed section.

5919038, Jul 6, 1999

Feb 29, 1996

8/609143

Gerald J. Labelle - Allentown PA
Sidney M. Cohen - Allentown PA
William E. Lindquist - Schnecksville PA
Michael E. Prokesch - Zion Hill PA

Fuller Company - Bethlehem PA

F27B 1500

432 14

The invention relates to a method for heat treatment of fine calcium carbonate bearing material comprising preheating fine material containing a coarse and a fine fraction. The preheated material is delivered into a fluidized bed calcining means wherein the coarse fraction is calcined and the fine fraction is delivered by process air to an adjacent vertically arranged gas flash calciner furnace in which it is calcined.

5782973, Jul 21, 1998

Apr 29, 1997

8/841056

Sidney M. Cohen - Allentown PA
Michael E. Prokesch - Zion Hill PA

Fuller Company - Bethlehem PA

C04B 745, C04B 760, F27B 1500

106744

A process of treating dust from a cement manufacturing operation. The process comprises adding carbon bearing material to the dust catch from a cement manufacturing operation to form a mixture, which is formed into nodules and sizing the nodules to obtain a feed material having a selected size range. The nodules are directed as feed material to a fluidized bed which is maintained by passing air for combustion upwardly through a bed of material. The material is thermal processed within the fluidized bed in a reducing atmosphere by supplying fuel for combustion in the fluidized bed to maintain temperatures sufficient to volatilize alkali and sulfur compounds in the feed material and produce a product having an increased concentration of cement forming compounds and reduced alkali and sulfur compounds as compared to the feed material. The reduced clinker is then re-oxidized to minimize/reverse adverse color and mineralogy.

5772937, Jun 30, 1998

Oct 15, 1996

8/732805

Sidney M. Cohen - Allentown PA
Michael E. Prokesch - Zion Hill PA

Fuller Company - Bethlehem PA

B29C 6704

264117

Disclosed is a method and an apparatus used in said method, to produce aggregate products from waste material streams. The method comprises combining an encapsulation material with waste materials to form a mix suitable for granulation. This mix is then feed to a granulation means to form particles having a size suitable for thermal treatment in a bed thermal processing means, which can be a fluid bed system or a spouting bed system. In the bed thermal processing apparatus the particles are converted into an aggregate product.

5260041, Nov 9, 1993

Dec 21, 1992

7/994037

Sidney M. Cohen - Allentown PA
Michael E. Prokesch - Bethlehem PA
William E. Lindquist - Schnecksville PA

Fuller Company - Bethlehem PA

C01F 1106

423175

A process for the continuous production of a calcined product containing a high level of reactive oxide valves, from a preheated raw material containing calcium carbonate values, said process comprising, (a) introducing the preheated raw material to the bottom of a generally vertically oriented gas suspension calcining furnace, whereby said preheated raw material is thereafter suspended in an ascending stream of heated gas to thereby pass vertically upwardly through the gas suspension calcining furnace; (b) passing the ascending gas stream through a plurality of burners, into which fuel and air are injected, that are vertically spaced from each other, in the gas suspension furnace, at a number of levels in the flow direction of the heated gas, and (c) collecting the calcined product.

5354375, Oct 11, 1994

Oct 12, 1993

8/134366

Sidney M. Cohen - Allentown PA

Fuller Company - Bethlehem PA

C04B 2822

106792

Disclosed is a method and an apparatus for the heat treatment of lime sludge (CaCO. sub. 3) to form burnt lime (CaO). In the method of the present invention lime sludge is dried in a gas dryer means, to produce a dried lime sludge. The dried lime sludge is separated from the gases and thereafter is first fed to a compacting means wherein it is compacted into a plurality of substantially uniform bodies which are thereafter fed to a shaft kiln in which the compacted dried lime sludge is converted to active burnt lime.

5685709, Nov 11, 1997

Jun 29, 1994

8/267342

Sidney M. Cohen - Allentown PA

Fuller Company - Bethlehem PA

F27D 108

432 95

Disclosed is a method and an apparatus for the heat treatment of lime sludge (CaCO. sub. 3) to form burnt lime (CaO). In the method of the present invention lime sludge is dried in a gas dryer means, to produce a dried lime sludge. The dried lime sludge is separated from the gases and thereafter is first fed to a compacting means wherein it is compacted into a plurality of substantially uniform bodies which are thereafter fed to a shaft kiln in which the compacted dried lime sludge is converted to active burnt lime.

4668182, May 26, 1987

Sep 27, 1985

6/780854

Sidney M. Cohen - Allentown PA

F27B 1500

432 58

An apparatus and process for calcining gypsum is disclosed which utilizes a flash furnace for rapidly calcining fine particulate gypsum while the material is suspended in a stream of hot gas. The method and apparatus utilize a two-stage suspension preheater for utilizing waste gases from the calcining furnace for preheating raw material to be calcined and a two-stage suspension cooler for cooling hot calcined gypsum which is discharged from the calcining furnace. Spent cooling gas is supplied to the preheater for use in preheating the fresh gypsum to be calcined. The invention also contemplates recirculating a portion of the gypsum discharged from the furnace back to the furnace for further calcination. Hot product may be discharged directly from the furnace.