US 5,499,873 AGranted

Method of mixing particulate material using a conveyor belt mixing system

AssigneeKaiser Aluminum & Chemical Corporation

InventorsDavid C. Cummins, David L. Roussel

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Abstract

A system and a process is provided for reducing the dust formation during the transfer of a particulate material on an endless conveyor belt. During transfer of the material on the conveyor belt the material is first sprayed with a wetting agent then by application of a plow the moving material is lifted from the bottom of the belt and is diverted towards the side edges of the belt thus creating additional exposed surfaces. The material is then again sprayed then contacted with baffles to redirect the material from the side edges towards the center of the belt thus creating additional exposed surfaces which are then again sprayed with a wetting agent to substantially eliminate dusting. The plow and baffle combination can also be used for uniformly mixing two or more particulate materials on a moving belt.

Claims5

Dependent claims

A process for mixing two or more particulate materials on a moving endless conveyor belt which comprises:

(a) adding to a first particulate material being conveyed on the belt a second particulate material;
(b) contacting the moving admixture of the first and second material with at least one plow, having a pointed end and a flared end located above the surface of the moving belt, the plow being arranged in such a manner so that the pointed end of the plow faces in a direction opposite the direction of travel of the belt to allow the plow to lift and divert the particulate material being conveyed on the belt towards the side edges of the belt;
(c) providing at least two baffles located above the surface of the belt and positioned in such a manner so as to direct the admixture from the side edges of the belt towards the center of the belt;
and
(d) recovering a uniform mixture of the first and second particulate material.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/452,680Filed 30 May 1995 · division
Priority: 21 Jan 1994
Granted: 19 Mar 1996
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B01F 35/181
Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application: preventing generation of dust or dirt;…
B01F 33/26
Other mixers; Mixing plants; Combinations of mixers: mixers with an endless belt for transport of the material, e.g. in layers or with mixing…
B28C 1/222
Combined with means for conditioning by heating, humidifying, or vacuum treatment , by cooling, by sub-atmospheric pressure treatment: by…
B28C 5/36
Mixing on or by conveyors , e.g. by belts or chains provided with mixing elements: endless-belt mixers , i.e. for mixing while transporting the…