Intratec Chemical Process Library is the first free online encyclopedia of chemical process technologies. Our Library covers not only processes description themselves, but also the economics surrounding chemicals production, providing real-world knowledge on the production of several chemical commodities. Click here to check all chemicals covered.
In this page you will find free data about Precipitated Calcium Carbonate (PCC), including:
- What is PCC
- How to make PCC
- PCC uses and applications
This page presents brief synopsis of PCC production technology, describing, in a concise way, relevant technical and economic aspects. Each manufacturing process description will consist of:
- Major process steps
- Simplified, schematic flow diagram & key equipment
- Important safety or environmental considerations
- Economic perspective, comprising capital expenditures and/or operating expenses
All content from Intratec's Chemical Process Library was produced based on reports published by Intratec. To learn more about Calcium Carbonate production processes presented below and others examined in Intratec reports, click here.
Precipitated Calcium Carbonate from Limestone
Calcium carbonate (CaCO3) is a mineral that occurs naturally in chalks, limestones and marbles. Its largest use is in the pulp-and-paper industry as a filler and pigment. Other calcium carbonate applications include its use in building construction, plant and crop fertilizers, food additives, water and sewage treatment, ceramics, pharmaceuticals and cosmetics.
The following paragraphs describe a carbonization process for precipitated calcium carbonate (PCC) production from limestone.
Initially, the limestone from a quarry is stored in bins. Typical extracted limestone contains about 75 wt% of CaCO3. Mined limestone is crushed in a jaw crusher and calcined (burned) in a vertical-shaft lime kiln at about 1,000°C. In the kiln, the calcium carbonate present in the limestone decomposes into calcium oxide (CaO; also known as lime or quicklime) and carbon dioxide, which is captured and treated for reuse in the process.
The CaO is fed to a stirred slaker tank, where it is ...
The pure slaked lime is then fed to ...
Drying, Grinding and Finishing
The slurry from the carbonators is ...
An economic evaluation of the process described was conducted based on data from the first quarter, 2014. The scope of this analysis assumes a PCC plant located near a limestone quarry.
The total capital investment required to construct a plant with the capacity to produce 50,000 metric tons per year of PCC in the U.S. is estimated at ...
The production costs (including costs associated with plant operation, product sales, administration, R&D activities and depreciation) are about ...