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Language: English Portuguese Russian
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Training Time: 24 minutes
Compatibility: Desktop, Tablet, Phone
Based on: Industry Standards and Best Practices
Languages: English, Portuguese, Russian
The slakers and causticizers are where the liquid-based chemical reactions of the recaust area occur. The purpose of slaking and causticizing is to convert clarified green liquor to white liquor for use in the digesters. This module will discuss the role of slaking and causticizing in the recaust system as well as identify and describe the major equipment and process flows.
At the end of this module, you will be able to:
The following key questions are answered in this module:
What is slaking?Slaking is the reaction that occurs when solid lime, or calcium oxide is added to water, creating calcium hydroxide.
What is causticizing?Causticizing is a reaction in which sodium carbonate in green liquor reacts with calcium hydroxide from the slaker to form sodium hydroxide and calcium carbonate.
How is the slaker temperature controlled?Slaker temperature is controlled by changing the temperature of green liquor flowing into the slaker.
At what temperature does a slaker operate?Slaking is a reaction which gives off heat, so the slaker operates near the boiling point of water.
What is causticizing efficiency?Causticizing efficiency is how much sodium carbonate is converted to sodium hydroxide, or how effective the recausticizing process is.
Below is a transcript of the video sample provided for this module:
Green Liquor Clarifiers
View Course
Lime Kiln Fundamentals
Lime Mud Filtering
Recausticizing Fundamentals
White Liquor Clarifiers
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