List of Shortlisted Candidates for Group Discussion / Personal Interview for Selection of Assistant Manager (Finance) – E02 Against Advertisement No 10200101. 10/05/2021     | BUY-BACK – 2020-21 18/02/2021     | List of Short-listed Candidates for GET-2020 Interview. 11/01/2021     | Recruitment of Doctors-2020 12/10/2020     | NIT for Engagement of Consultant for preparation of EIA and EMP study to obtain EC to set up High End Aluminium Alloy project by “Utkarsha Aluminium Dhatu Nigam Ltd.” 16/07/2020     | Deposit of one time Registration fees for PRMBS 26/06/2020     | Covid Mailer from Ministry 06/05/2020     | Integrated Govt. Online Training ( iGOT) courses on DIKSHA platform on Covid 19 pandemic 22/04/2020     | Circular: Integrated Govt. Online Training (iGOT) courses on DIKSHA platform on COVID-19 pandemic 22/04/2020     | EOI – for SUPPLY, INSTALLATION, OPERATION AND MAINTENANCE OF GPS & GPRS BASED INTEGRATED RAKE TRACKING SYSTEM IN CAPTIVE POWER PLANT, ANGUL, ODISHA 11/04/2020     | Advertisement of PESB for the post of Director(Commercial) 18/03/2020     | The corrigendum against the Advt. no 10200101 13/03/2020     | Joint Venture agreement for Khanij Bidesh India Ltd. (KABIL) signed in presence of Hon’ble Minister of Mines Shri Pralhad Joshi by NALCO, HCL and MECL under Ministry of Mines, GoI. 01/08/2019     | Revision of PRMBS contribution for 2019-2020 02/04/2019     | Call for vendor registration from SC/ST entrepreneurs 24/01/2019     | Information about common knowledge Management portal for CPSEs 10/08/2018     | Public Information 26/01/2018     |
bauxite page banner
print page icon


Synthetic Detergent Grade Zeolites (Sodium Alumino Silicates), which are similar to natural minerals, were found to be highly effective builders. Given their function, effectiveness and their safe ecological properties, synthetic Zeolites have been accepted as environmentally compatible builders.

Advantages of Zeolite-A

Average particle size 4 micron and maximum size not exceeding 20 micron of Zeolite-A has made it suitable to pass through the mesh size of clothes, preventing greying thereby.

NALCO’s Zeolite-A

Nalco’s detergent grade Zeolite plant is based on indigenous technology developed by M/s CSMCRI, Bhavnagar licensed through NRDC. Production of Zeolite-A directly in the loop of NALCO’s Alumina Refinery, based on Sodium Aluminate Liquor as the main feed stock. Zeolite-A Plant is located adjacent to Refinery Complex of NALCO at Damanjodi. Product quality: Specification of NALCOs Zeolite-A (Data Sheet) is at par with International Standards.

  • Due to cubical shape with rounded corners and edges, Zeolite-A crystals do not remain on fabrics and are easily removed on rinsing.
  • The unwanted water soluble dirt molecules are absorbed on Zeolite particles.
  • It coagulates the colloidal dirt and pigments causing easy removal.
  • The presence of Zeolite-A does not interfere with the bio-degradation of Linear Alkyl Benzene Sulfonates (LABS).
  • Zeolite-A particles tend to form aggregate with other sewage constituents and are largely eliminated in the pre-sedimentation of sewage treatment.
  • Zeolite-A is formulated in detergents to the extent of 25-30%.



Parameters Value
1. Calcium binding capacity
mg CaO/gm of dry Zeolite
Min. 160
2. Particle size analysis
a) % finer than 4.5 mic. (Sedigraph)
b)Avg. particle size, d50(Sedigraph)
85+ 10
Not more than 4 micron
3. pH (5% slurry) 11 + 0.5
4. Mole composition(based on chemical analysis) 1.0 + 0.2 Na2O
1.0 Al2O3
1.85+ 0.5 SiO2
6.0 (Max.) H2O
5. Bulk density, gm/cc 0.45 + 0.1
6. Crystallinity
(X-ray diffraction)
(as compared with 4 A BDH powder)
Min. 90%
7. Whiteness index Min. 95%

Zeolite-A is generally packed in 20/50 kg HDPE lined bags or 1 MT jumbo bags