• Causticising

    Date posted:

    • Post Author


When referring to Black Liquor recovery boiler operation – Mixing of green liquor with lime (CaO). This mixing causes a chemical reaction producing sodium hydroxide and calcium carbonate. The calcium carbonate precipitates and is filtered out leaving a solution of sodium hydroxide and sodium sulphide or ‘white’ liquor which is then introduced with wood chips into the cooking process.

You may also like