Precipitated Calcium Carbonate Powder: Application and Process Requirements

For precipitated calcium carbonate powder, confirm that feed spreads and moves across the heated plates without persistent sticking. Begin with friable washed calcium carbonate cake or granulated solids 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, brightness, particle size and agglomerate strength 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 contained cooling before filler milling or packaging. Review discharge, temporary holding and packaging exposure as part of the moisture-control plan.

Application-Specific Equipment Selection

Disc Dryer selection for precipitated calcium carbonate powder starts with Continuous Disc Dryer requirements and the defined feed. Assess Contact Dryer and conductive drying together with indirect contact dryers; the chemical powder drying 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

Obtain the SDS for the actual grade and residual process liquor. HSE safety-data-sheet guidance.

Assess charging, sampling, cleaning and discharge for the selected material. HSE exposure-assessment guidance.

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

Review operation and maintenance around the specified equipment configuration. HSE work-equipment guidance.

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