Citric Acid Crystals: Application and Process Requirements

For citric acid crystals, preserve the required hydrate form while removing residual mother liquor moisture. Begin with centrifuged citric acid crystals of a specified hydrate grade and confirm how the incoming grade varies before defining the drying cycle.

Feed, Product Quality and Downstream Handling

Material Movement and Drying Control

Include moisture, assay, hydrate identity and caking tendency in the trial record. Fix the sampling locations and analytical methods before comparing trials; feed preparation and cooling can affect the measured result.

Drying Endpoint and Product Acceptance

After acceptance, arrange dry controlled cooling before food-acid packaging. Review discharge, temporary holding and packaging exposure as part of the moisture-control plan.

Application-Specific Equipment Selection

Disc Dryer selection for citric acid crystals starts with Continuous Disc Dryer requirements and the defined feed. Assess Contact Dryer and conductive drying together with indirect contact dryers; the industrial food dryer duty must be demonstrated using representative material and the required finished-product specification.

View the Disc Dryer range and original equipment specifications

Technical References for This Application

Define hygiene and contamination controls for the food process. FDA food manufacturing practices.

Review food-hygiene planning alongside the drying operation. Codex food-hygiene resources.

Evaluate the finished ingredient using the agreed water-activity method. FDA water-activity reference.

Review the dust characteristics of the collected dry material. HSE combustible-dust guidance.

Review the thermal duty and utilities for the actual feed. U.S. DOE process-heat reference.