Sugar Magma

Sugar Magma

Mounds of brown and white sugar crystals and white sugar cubes

In the sugar manufacturing process, magma is a slurry of sugar crystals and liquid syrup or juice blended in a mingler, and pumped as a seeding material to subsequent boiling stages.

Depending the grade of magma, the percentage of crystals ranges from 30% to 45%, so this mixture has a high viscosity and is very abrasive. The crystals within the magma are large, from 170 to 270 microns, and can be damaged by aggressive pumping action, so it needs to be handled with larger, slower running pumps. Because the temperatures range from 40áµ’ to 50áµ’C (104áµ’ to 122áµ’F), pumps are usually jacketed to maintain temperature.

Positive displacement pumps are critical to efficient, low shear magma transfer and their very low NPSHr helps ensure sufficient NPSHa even with magma’s high density. Hardened bushings are required due to abrasiveness.

    Viking in the Process

    Viking pumps are used to transfer magmas from the mingler or low melter to storage, then to either the intermediate pan or hi-melter. They are commonly replacing the scraper/ellipse pumps that were previously used due to those pumps’ high maintenance costs due to multiple large, expensive seals, high pulsation and inability to pull a suction lift.

      Applications

      • Applications
      • Magma Transfer

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