Bentonite

Bentonite formed through devitrification (weathering) of vitreous volcanic ash. Bentonite is the commercial name of a whole range of natural clays with a high water absorption capacity causing it to expand and swell. Bentonite predominantly consists of montmorillonite: a clay mineral belonging to a class of phyllosilicates called smectites.

Bentonite apparent density, when quarried and piled under natural moisture conditions, ranges from 1.5 to 1.8 g/cm3. Its density when dry varies depending on the quality, and may range from 2.2 to 2.8 g/cm3. The apparent density of milled bentonite products varies depending on mill fineness, ranging from 0.7 to 0.9 g/cm3.

Bentonite is a Hydrated Aluminium Silicate and Mineralogical name of Bentonite is Montmorillonite

Chemical composition of Bentonite is


Application

Owing to its rheological properties and thixotropy of aqueous suspensions.

bentonite is used as a mud constituent for oil and water well drilling.

Its functions are mainly to stabilise the borehole, seal the borehole walls, and remove drill cuttings.

Bentonite muds are thus employed for oil and water well drilling, tunnel, and microtunnel drilling.

Grade moisture Filter Volume Viscosity Yp / Ratio Wet Residue
API Sec 11 ( OCMA ) 12-14 % < 16 ml > 30 cps < 6 < 2.5 %
API Sec 9 ) 12-14 % < 15 ml > 30 cps 3 < 4.0 %

Special Product

High Yield 12-14 % < 20 ml > 40 cps < 4.0 %

Loose supply : drilling grade lumps will supply in big volumes for bulk shipments

Powder Packing : in 25 kg, 50 kg HDPE and 1000 kg Big Bag

Bentonite is used as a bonding material in the preparation of moulding sand for the production of cast iron, steel, and non-ferrous casting.

The unique properties of bentonite yield green sand moulds with good flowability, compactability, and thermal stability for the production of high quality castings.

Its functions are mainly to stabilise the borehole, seal the borehole walls, and remove drill cuttings.

We offer below Foundry grades :

Grade moisture swelling GCS Gel Index MBA
Free Swell 35 12-14 % > 35 cc 8-10 psi > 95 % > 400
Free Swell 30 12-14 % > 30 cc 7-9 psi > 80 % > 400
Free Swell 25 12-14 % > 25 cc 6-8 psi > 70 % > 380

Loose supply : Foundry grade lumps will supply in big volumes for bulk shipments

Powder Packing : in 25 kg, 50 kg HDPE and 1000 kg Big Bag

Bentonite slurries are used in the construction of special foundations for digging, diaphragm walls and bored piles.

In geothecnical engineering, bentonite is used for self-hardening mixtures employed to build cut off walls, grouting mortars, and grouting.

bentonite waterproofing properties are best exploited in environmental engineering, to seal off soil infiltrations, and line the base of landfills.

We offer below Civil Engineering & piling grades :

Grade moisture Liquid Volume Marsh Viscosity Finness Mud Density
Bent 45 12-14 % > 600 % > 45 cps > 85 % 1.02
Bent 40 12-14 % > 600 % > 40 cps > 85 % 1.02
Bent 38 12-14 % > 550 % > 38 cps > 85 % 1.02

Loose supply : Civil Engineering & piling grade lumps will supply in big volumes for bulk shipments

Powder Packing : in 25 kg, 50 kg HDPE and 1000 kg Big Bag

Due to its water absorption capacity and colloidal property, bentonite is used as a binding additive to convert iron ore fines into pallets.

We offer below IOP Grade Bentonite :

Grade moisture swelling PWA MBA
IOP 600 < 14 % > 30 cc > 600 > 400
IOP 550 < 14 % > 25 cc > 550 > 380

Loose supply : IOP grade lumps will supply in big volumes in loose condition

Powder Packing : in 25 kg, 50 kg HDPE and 1000 kg Big Bag

Bentonite is used as an animal feed supplement.

Bentonite is used as a pelletizing aid in the production of animal feed pellets.

Due to its high adsorption power, it is particularly effective agains micotoxins.

Owing to its swelling property, bentonite is used for cat litter, due to its advantage of absorbing refuse by forming clumps.

Bentonite is used to improve the efficiency of conversion of pulp into paper, as well as for paper quality improvement by preventing rubber particle agglomeration.

Due to its absorbing property, bentonite also offers useful de-inking properties for paper recycling.

We offer below paper grade :

Grade Mesh Moisture Swelling Brook Filed Velocity Wet Residue
Paper 325 < 14 % > 30 cc < 120 0.10 %

Powder Packing : in 25 kg, 50 kg HDPE and 1000 kg Big Bag

In winemaking, bentonite is used to enhance clarification and protein stabilization.

Bentonite is used as a filler in pharmaceuticals, and for its absorption/adsorption functions.

It is also employed in creams, face-powders, and spa mud preparations.

Bentonite is used in detergents to soften the fabrics. Liquid cleansers/soaps rely on the inclusion of bentonite as a suspension agent and viscosity enhancer.

Bentonite functions as a thickening and/or suspension agent.

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kvv@slmpl.com

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