Abstract
The salt quality was studied by dewatering methods such as centrifugal hydro extraction, fixed bed dryer, and rotary drum dryer. The effect of different salt particle sizes was also analyzed. The centrifugal hydro extractor is found to be effective when reducing the high-water content of salt and suitable for reducing water content after the salt wash stage. Fixed bed dryers produce lower water content than rotary drum dryers. A water content lower than 1% can be achieved using fixed bed dryers. Finally, all dewatering methods such as centrifugal hydro extractors, fixed bed dryers, and rotary bed dryers are suitable for salt production methods. Reduced salt particle size from 30 to 60 mesh also improved the drying performance.
Highlights
Madura Island has a massive number of solar salt ponds
Fixed bed dryer and rotary drum drying procedure: The salt sample was first washed in saturated brine for 2 minutes, and it drained by the centrifugal hydro extractor to reduce the water content until 11%, it was dried at 70oC for 5 minutes to ensure the sample has 10% water content uniformity
The water content reduced from 30% to 10,5% and 9,89 in 10 minutes for 30 mesh and 60 mesh salt particle size, respectively
Summary
Madura Island has a massive number of solar salt ponds. The crude solar salt is processed in the factory to improve the quality and consumed by industry. Several chemical and engineering methods have been proposed to produce better salt quality [4]–[8]. The crude solar salt is ground washed with saturated brine water in the initial stage. The drying method has been widely used in industry to improve the quality of the product [10]–[13]. The selection of drying technology is essential to produce better salt quality at an economical price.
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