M3106 - Lime kilns

Operational Details
Limestone is crushed to a desired size, ranging up to two inches, then run along a sloped conveyor system through a kiln. The limestone takes approximately three hours to pass through the kiln at 2,600 degrees Fahrenheit. During this time, moisture and residual chemicals are driven out. The resulting lime (calcium oxide) as it emerges from the kiln, is about 2/3 of the weight before it went into the kiln.

 It is also further processed by pulverizing the lime and running it through the kiln again. This changes the properties so the powdered or "slack" lime can be used for agricultural purposes such as neutralizing the soil.

Lime is then bagged or stored in bulk and shipped to market. Coarse lime is used for cement and mortar products.

Contaminant thermal recycling involves decontaminating soil and other products through a thermal process. The soil or product is delivered to a plant. It may be manually separated (to pick out large objects), then is loaded on a conveyor which moves the product to a heated unit. The thermal process removes all contaminants from the product. The product will then be used for other purposes such as landfill or for road construction.

SIC Codes
000000510 - Lime kilns
000001019 - Contaminate Thermal Recycling