MATRIX PROJECTS
LIME DRYING AND MILLING
Jul 01, 2000
Matrix provided the civil, structural and mechanical engineering necessary for designing a lime drying and pulverizing facility with a through-put of 75 tons per hour. The design required a re-furbished rotary kiln dryer fed by a weigh belt and large capacity screw conveyors with a bucket elevator feeding a 65 ft tall milling and screening structure.
The mill was a 200 hp hammermill and vibratory screens and an air separator segregated the lime into two different products with an overs recycle back to the mill. A gas solids injector (GSI) screw pump (or "fuller" type pump) pneumatic conveyor was sized to deliver 60 tons per hours to two different storage silos.
Matrix also provided all of the engineering necessary to properly vent and collect dust off all of the process equipment. A 7500 cfm dust collector was used along with a carefully designed network of collection ductwork to prevent duct clogging. We re-used an existing 18,000 cfm dust collector for the rotary kiln dryer. This provided a challenge since the collector was over 90 ft away from the dryer. A 30" dia grasshopper duct was designed originating from the dryer discharge up to the top of the 65 ft mill structure and back down to the dust collector in the existing process area. The duct angles were kept in excess of 50 deg. to prevent product fall-out and line clogging.
More Projects & News
Matrix provides a PLC based TUGMONITOR for a 6000HP TWIN ENGINE NEW BUILD. Communicates seamlessly via ethernet with GE Engines.
Matrix provided conceptual and hard mechanical design of a heavy duty screw feeder for metering phosphorus pentoxide (crystallized phosphoric acid) into a dissolve tank. Due to the hot reaction during hydration in the tank (resulting into very hot phosphoric acid) the variable speed screw feeder consisted of a 316L S/S 12 inch diameter auger and 1/2 inch thick trough. A special dump hopper with automated closing lid was designed with a large grated opening and bypass chute at the inlet of the feeder. Very special design considerations were made for protecting the conveyor seals and bearings from making contact with the hot acid. Our design allowed the acid crystals or hot liquid to fall out into an isolated gap and into the tank before it challenged the seal. This was a highly successful design has virtually eliminated the huge stock piles of drummed feedback material that accumulated due to the inability to dissolve the crystallized acid safely.
Matrix Industrial Systems was proud to work in conjunction with AC Marine in designing and supplying critical systems for Georgia Aquarium's newest venue to experience sharks directly with the grand opening of their 1.2MM gallon Shark Tank. This attraction allows you to submerge into the tank within a shark cage and begin an underwater journey traversing the pool as it is suspended and moved by a hoist/monorail system. Breathing air for the participants is supplied through an umbilical tethered to the cage and connected to a specialized Breathing Air Control System (BACS). Matrix supplied and installed this system with its umbilical as a turnkey project. Matrix and AC Marine were proud to be guinea pigs (or should I say SHARK BAIT) on the maiden voyage!
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