PT Indonesia Chemical Alumina or ICA was established on February 26, 2007. Our activities comprises of the processing and refinery of bauxite ore into alumina, trading and distribution of alumina products and other related activities. Our chemical grade alumina (CGA) plant is located in Tayan, Sanggau Regency, West Kalimantan. The Tayan CGA plant may process 850,000 wmt of washed bauxite ore per annum, resulting in nameplate annual production capacity of 300,000 tons of CGA. The plant employs Bayer process and is complemented with calcination facility to produce CGA products in the form of aluminium hydroxide and alumina.

CGA production process starts from bauxite ore mining which is conducted by PT ANTAM Tbk’s (ANTAM) West Kalimantan Bauxite Mining Business Unit. ANTAM is our majority shareholder. Bauxite production originated from Tayan bauxite mine in West Kalimantan. The mined bauxite is fed for consumption at our Tayan CGA plant in Tayan, West Kalimantan.


Tonnes Production Volume*


Tonnes Sales Volume*


Sales Destination

* Q4 2023

The mine is conducted with open pit methods with truck and excavator. After the ore is mined, the ore is washed and screened to be transported to the Tayan CGA plant, which is located next to the mine. In general, the term CGA refers to chemical products in the form of aluminium hydroxide and alumina for various industrial applications except for aluminium industry. Aluminium hydroxide is a semi-finished product that can be used for water purification. While alumina can be used to produce electronic components. Several products using CGA include refractoriness, abrasive, assembled products, integrated circuit (IC), as well as basic materials for LCD screens.

ICA is an export oriented company with markets in South Korea, Japan, China, Malaysia, Thailand, Philippines, Vietna, India, Pakistan, New Zealand, Saudi Arabia, United Arab Emirates and Indonesia.