Quicklime is one of many reagents offered by Mintek Resources. Quicklime, also referred to as lime (calcium oxide (CaO)), is derived from high quality, natural deposits of limestone (calcium carbonate (CaCO3)) or dolomitic limestone (calcium magnesium carbonate (CaCO3 + MgCO3). Quicklime is produced by heating the stone to almost 2000 degrees Fahrenheit. Throughout the process, quality control measures and precise instrumentation are utilized to ensure the quicklime produced is a consistent, high-quality product.

Quicklime is a widely used chemical compound used in a variety of markets that surround our everyday life such as construction, environmental, oil and gas and industrial processes. In the construction market, quicklime is highly effective at reducing soil plasticity index, reducing the shrink/swell potential and resisting potentially harmful freeze-thaw and wet-dry cycles. In environmental applications, quicklime will adjust the pH of waste streams, reducing heavy metals solubility. In the industrial markets, quicklime makes the air we breathe cleaner, removes impurities in steelmaking processes, and makes the water we drink safer. Quicklime can help repair and even prevent landslide in the oil and gas industry by drying overly wet soils and modifying soils to provide greater internal friction helping to increase construction and overall productivity.

Quicklime Products and Applications

Quicklime is offered in a variety of product sizes to fit any application or jobsite.

 

  • Lime fines, generally less than ¼-inch in size. The small sizing helps accelerate the reaction of the product once applied to the soil, sediment or waste stream. Primary delivery methods Lime fines to the job site include: pneumatic trailers, EPA-Tarp compliant dump trailers, or supersack.
  • Pulverized Lime Fines, a fine grade material with similar physical properties to cement. The ultra-fine sizing ensure the material will flow through spreader equipment easily and quickly. Primary delivery methods include: pneumatic trailers, EPA-Tarp compliant dump trailers, or supersack.
  • Calciment®, a co-product of the lime manufacturing process, is a dry bulk product with similar attributes to quicklime along with unique pozzolanic properties accredited to the presence of the pozzolans silica and alumina. Calciment offers fast drying, modification of high clay soils, as well as short and long term strength gains. Calciment is most often delivered to the job site via pneumatic trailers, EPA-Tarp compliant dump trailers, or supersack.
  • Hydrated Lime is formed when quicklime is carefully mixed with water to form hydrated lime (Ca(OH)2), also known as slaked lime or calcium hydroxide. This process forms a very fine white powder that is very useful in a number of applications, especially asphalt for anti-stripping while stiffening the binders in asphalt. Hydrated lime is most commonly delivered via pneumatic trailer but is also available in supersacks.
  • Pebble Quicklime, with sizes ranging from 2-inch down to ¼-inch, is a great option for any application where dust is a concern. Pebble lime is traditionally delivered to the job site in EPA-Tarp compliant dump trailers or supersacks.
  • Quicklime slurry – Quicklime slurry is a suspension of calcium hydroxide in water. This free-flowing product offers a solution for customers particularly concerned with dusting issues.

Quicklime is used for a variety of applications that surround our everyday life, including:

Soil Drying

Lime, provides the fasted drying option.

  • Out preforms Portland cement in drying applications
  • Lime based products offer fast, effective drying to keep projects on time and on budget
  • Once hydrated, the high availability of calcium oxide creates exothermic reactions and quickly drives off moisture
    • Over 30% of its weight in water can be absorbed as quicklime hydrates
  • Hydration reaction generates heat to allow job sites to progress in cold, wet weather conditions

Soil Modification

Stabilization of problematic soils along with sediments and waste streams in environmental applications.

  • Calciment® offers a blend of CaO and Pozzolans to protect against freeze/thaw resistance and provide short and long-term strength gains
  • Quicklime raises the pH of a soil to the point that naturally present pozzolanic compounds in clayey soils are solubilized making them available for long term cementitious reactions in the presence of calcium
  • Lower moisture absorption increases freeze/thaw resistance

Soil Stabilization

Stabilization of problematic soils along with sediments and waste streams in environmental applications.

  • Pozzolans increase strength over time.
    • Quicklime raises the pH of a soil to the point that naturally present pozzolanic compounds in clayey soils are solubilized making them available for long term cementitious reactions in the presence of calcium.
  • Lower moisture absorption increases freeze/thaw resistance.

Full Depth Reclamation

Lime used in full depth reclamation (FDR) saves time and lowers material and overall cost.

  • Full Depth Reclamation provides cost savings vs. reconstruction due to eliminating hauling and landfill of existing roadway
  • Minimizes road closures as the finished product can typically handle traffic loads within hours
  • Lower material cost by recycling on-site material
  • Lime-based products are field-proven to achieve 0.37 coefficients for the base layer on the VDOT I-81 rehabilitation project

Contaminated Soil, Sediment and Sludge Remediation

  • Lime-based products decrease moisture content in contaminated soils, sediments and waste streams, djusts the pH and improves geotechnical properties including strength and compaction
  • Economical dewatering to save money on transport disposal costs by positively affecting the bulk density of the material
  • Reduces plasticity aiding heat transfer and volatilization of contaminates
  • Aids in bioremediation processes by altering the characteristics of biosludges thereby increasing stability & reducing pathogens
  • Meets 503 Regulations for Class A & Class B Biosolids Treatment