Processing Technology of Corn Steep Liquor Powder (CSLP)

Soaking Process
Corn kernels are soaked in sulfurous acid (an aqueous solution of sulfur dioxide) at a specific temperature and concentration for over 50 hours. After soaking, the corn kernels are removed, and the remaining liquid—without corn kernels—is referred to as “Corn Steep Liquor.”

Ultrafiltration
The corn steep liquor is filtered using an ultrafiltration membrane, separating it into a permeate (small-molecule components that pass through the membrane) and a retentate (macromolecular components retained by the membrane).Corn Steep Liquor For Agriculture

Lime Milk Reaction
The permeate is then reacted with lime milk (calcium hydroxide solution), resulting in an upper clear liquid and a lower precipitate. The clear liquid is mixed with the retentate to form a combined mixture, which is then concentrated to obtain corn steep liquor in slurry form.NPK Fertilizer Corn Steep Liquor Powder 42%

Drying Process
The corn steep slurry is preheated at a low temperature and then processed using a spray dryer to produce a fine powder. The final product is Corn Steep Liquor Powder (CSLP).100% Water Souble Organic Fertizilizer