Factors Affecting Lime Slaking

STT has spent years researching the factors affecting lime slaking reactivity, both in the field and in the lab. We’ve found that poorly-slaked lime can have a major negative impact on lime slurry consumption, annual quicklime cost, and the operating cost of your system.

The amount of lime used in the process is determined by a combination of slaking parameters including:

  • final slaking temperature achieved
  • water-to-quicklime ratio used (by weight)
  • grit production and composition, generally reports to a waste stream
  • hydrated lime particle size (as it relates to specific surface area)
  • slaking water composition
  • neutralization capacity of calcium hydroxide produced
  • neutralization kinetics (how fast does it react in your downstream process?)
Our studies have shown that anywhere between 10- 40 percent can be saved in chemical consumption by ensuring lime slaking is carried out under optimum slaking conditions. Learn more>>

Improving the efficiency of your operation means you’ll also see a reduction in CO2 emissions- great news for your environmental department!