Refining of Raw Cane Sugar

Affination is the gateway to efficient sugar refining. Often underestimated, this step plays a pivotal role in removing molasses coatings from raw sugar crystals, setting the stage for high-purity production. By blending mechanical separation with chemical insight, affination enhances color removal, reduces non-sucrose load, and improves overall yield. 1. Why Affination Matters Raw sugar crystals arrive coated with molasses—a sticky layer rich in colorants, ash, and organic compounds. Affination is designed to: Strip away surface molasses and impurities Improve crystal purity before Melting Reduce the burden on Clarification and Decolorization Enhance final product quality and recovery This early intervention prevents downstream overload and supports consistent, high-grade output. 2. How the Affination Process Works Affination involves a controlled interaction between raw sugar and a saturated sucrose syrup. The syrup softens the molasses layer without dissolving the crystals. The mixt...

In sugar refining, every drop counts. While much attention is given to crystallization, clarification, or decolorization, one often underappreciated by-product plays a key role in overall efficiency: sweet water. Proper management of sweet water can significantly improve recovery, reduce sucrose losses, and increase refinery yield. 1. What is Sweet Water? Sweet water refers to the dilute sugar solution generated during the washing of sugar crystals in affination and centrifugation stages. It contains dissolved sucrose and traces of molasses, typically with a Brix value between 5–15°. Though not concentrated enough for direct crystallization, sweet water is a valuable stream for recovery and reuse. 2. Sources of Sweet Water in the Refinery Sweet water is generated mainly in: Affination centrifuges – when crystals are washed to remove the molasses coating. Refining centrifuges – during crystal washing to ensure high-purity white crystals. Filter cake and other washing operations – sm...

Crystallization and pan boiling are critical stages in the sugar refining process, directly influencing the quality, yield, and efficiency of sugar production. This article explores the science, equipment, and best practices behind these operations, with a focus on automation tools and energy efficiency to enhance modern refinery performance. In a typical sugar refinery, fine liquor—also known as clarified and decolorized syrup—is obtained after raw sugar solution undergoes clarification and decolorization processes. These steps remove impurities and colorants, producing a high-purity solution suitable for crystallization. After crystallization, the next step is centrifugation, where the massecuite (crystal-syrup mixture) is spun to separate sugar crystals from the remaining mother liquor. The separated crystals are then dried and cooled before packaging or further processing. 🧪 Crystallization Fundamentals Supersaturation Zones : Crystallization begins when the sugar solution reaches...

This article provides an overview of the adverse role of Dextran and Starch in the sugar production process, including their effects on the process house and measures to control them. Dextran Leuconostoc mesenteroides is a type of lactic acid bacteria that can break down sucrose into dextrose and levulose through a biological process. Dextrose and Levulose are monosaccharide isomers of Glucose and Fructose. Leuconostoc mesenteroides produces an enzyme called dextran sucrase during the break-down which causes the polymerization of dextrose into a polysaccharide called dextran. C12H22O11 => C6H12O6+C6H12O6 => (C6H12O6)n Sucrose => Dextrose + Levulose => Dextran Dextran isn’t a specific molecule but rather a group of long chain polysaccharides which have a varying range of molecular weight from 2000 to 20000. Dextran is formed when many glucoses is attached together at ɑ 1,6 by glycosidiclinkages. It may also have branches at ɑ 1,2 or ɑ 1,4 or ɑ 1,4. Generally, it has more tha...

Sugar Final product of Sugar Refinery. Chemically, a form of Disaccharides or Carbohydrates, essentially sucrose. Raw sugar is produced in a raw sugar plant and requires further processing in a refinery. Raw sugar is the raw material for sugar refineries. Some raw sugar mills have refineries attached to them. And there are standalone refineries that purchase raw sugar from raw sugar mills and refine it in their process house. Sucrose β-D- Fructofuranosyl α –D- glucopyranoside is the chemical name of sucrose, which is pure chemical compound of formula C 2 H 22 O 11 , widely known as sugar.  Source: Wikipedia Ash Content A quantitative measurement of Solid residue from incineration in oxygen presence. High ash content in Raw Sugar will require much more filtration and have a negative impact on total sugar refining capability. Ash content in sugar products is determined by incinerating a sample in the presence of oxygen and measuring the solid residue gravimetrically. During the ...