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BENTONITE

BENTONITE POWDER

Bentonite is an  absorbent aluminium phyllosilicate clay consisting mostly of montmorillonite.

The different types of bentonite are each named after the respective dominant  element, such as potassium(K), sodium (Na), calcium(Ca), and
aluminium (Al). Experts debate a number of nomenclatorial problems with the classification of bentonite clays. Bentonite usually forms from weathering of volcanic ash  most often in the presence of water. However, the term bentonite, as well as a similar clay called  tonstein, has been used to describe clay beds of uncertain origin. For industrial purposes, two main classes of bentonite exist: sodium and calcium bentonite. In stratigraphy and  tephrochronology, completely devitrified(weathered volcanic glass) ash-fall beds are commonly referred to as K-bentonites when the dominant clay species is illite. Other common clay species that are sometimes dominant are montmorillonite and Kaolinite. Kaolinite-dominated clays are commonly referred to as tonsteins and are typically associated with coal.


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  • TEST REPORT OF  BENTONITE POWDER
                                                                       
    GRADE :- AM-PILLING
                                     
      SPECIFICATION                            RESULT
     
      From                                               Powder             
                                           
      Free-swelling                                  28 ml
      PH                                                      9.50
      Moisture                                            12%
      Liquid limit                                        650
      Gell formation index                         35
      Sand contains                                 0.95%
      Density                                            1.25 min

Specifications of O.C.M.A. grade / A.P.I.- 13 A ( Section 6 ) grade Bentonite powder.
 
 
1)    Moisture                                                                     12.0% max.
2)    Viscometer Reading                                              30.0 min.
       (600 r.p.m.)
3)    Grit                                                                               2.5% max.
4)    Filtrate                                                                         16.0 max.
5)    PV-YP Ratio                                                               6.0 max.
6)    Sieve Analysis                                                           98 % min.
(Pass through 100 mesh sieve.)
 
(Above results are taken after preparing 6.43% slurry of Bentonite powder with Distilled water (i.e. 22.5 grm Bentonite/350 ml D.water.)
 
 
Note: Although we take enough care to maintain our quality standards as per guidelines of ISO 9001:2000, but here one should always keep in mind that Bentonite is a mineral found naturally & hence minor variations may tend to occur sometimes.
 

FOUNDRY GRADE BENTONITE
 
Specification                                                                 RESULT
 
1.Wet tensile strength (WTS)                               : 0.2.5-0.3/cm2
2. Green Compressive Strength (GCS)               : 8.5 - 11 N/cm2
 3. pH value                                                              : 9 – 11
4. Free swelling value                                            : 27– 30ml
5. Methylene Blue Value                                       : 400 min gm/g
6. Moisture content                                                : 13%
7. Particle size                                                          : 85%Passing 200 mesh 
8.Gelling time                                                             INSTANT
9. MONTMORONITE                                                 80%
 
          
SPECIFICATIONS OF CALCIUM BENTONITE

 

 
1) Al2O3......................................16.4%
 
2) Si2O3.......................................45.0%
 
3) Fe2O3........................................5.6%
 
4)  CaO..........................................1.18%
 
5)  MgO.........................................2.43%
 
6) K2O...........................................0.13%
 
7) NaO...........................................8.10%
 
8) TiO2..........................................1.16%
 
9) LOI..........................................13.28% 

 SPECIFICATION OF COSMETIC GRADE BENTONITE POWDER
 
      SPECIFICATION                           PARAMETER                           
 
1 COLOUR                                    CREAMY WHITE
2 FINENESS 200MASH                   95% PASSING
3 MOISTURE                                    4.5 TO 6.5%
4 SPECIFIC GRAVITY                     1.7G/ML
5 BULK DENSITY                            0.700 TO 0.900
6 PH                                                   7 TO 10

SPECIFICATION  OF IOP GRADE BENTONITE
 
              NO.                        PARAMETERS                            SPECIFICATION

                                CHEMICAL COMPOSITION
 

1                                           SiO2 %                                                 52max.

2                                          Fe2O3 %                                               12min.

3                                         AL2O3 %                                               16max.

4                                             CaO%                                                   0.5-1

5                                          Na2O%                                                 2.0-2.5

6                                          MgO%                                                 3.0max.

                                   PHYSICAL COMPOSITION
 

1                                     Moisture %  ( ARB)                                    14.00 max.

2                                        PH                                                                8.5 -10

3                                   Free Swelling Velum                                      28-30

4                          Methylene Blue Absorption (MBA) mg/g.      400MIN.

5                         Plate Water Absorption (PWA) %                         600min.



SEA WATER RESISTANCE BENTONITE

 
Specifications of SPECTA BOND GRADE of Sodium Based Bentonite Powder
 
 
Sr.No                         Physical properties                          Specta Bond Grade

1                                 Sieve analysis      
                                        <100 mesh                                                 Min 99%          
                                        <200 mesh                                                
Min 85%

2                        Moisture at 105-110deg c                                     9-12%

3                    Base exchange capacity(meq/100gm)               Min 100
 

4                    Swelling Capacity. (2gm/100cc)                             23-27

5                   Gelling time(10%)                                                         45 Sec.

6                   ph—2%suspension                                                       8.0-9.0

7                  Methylene blue value
                   ( mg/gm of sample)                                                      390
 

8                 Montmorillonite                                                             >75%

9                 Green compressive strength
                   (B:W=10:4)                                                                 Min.10psi
 

10               Gel formation index                                                      Min55

11                Liquid Limit                                                                        500
 

12                Swelling Index                                                                 >30
 
  NOTE: -This mineral (Raw Bentonite) is excavated from mines.
              It is in clay form and mostly composed of the mineral “MONTMORILLONITE”
              Mixed with some related minerals like BEIDELLITE.

  • USES OF BENTONITE
  • 1 Drilling Mud
  • 2 Binder
  • 3 Purification
  • 4 Absorbent
  • 5 Ground water barrier
  • 6 Medical
  • 7 In farming
  • 8 Bentonite slurry walls in modern construction
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  • HOME
  • LIST OF PRODUCTS
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  • PRODUCT GALLERY
    • PIGMENTS
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    • ANTHRACITE
    • GRAVELS AND ANTHRACITE
    • BENTONITE
    • AGGREGATE
    • SOYA BEAN MEAL
    • BARITE
    • SENNA LEAVES & PODS
    • BAUXITE ORE
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    • EMERY GRAIN
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    • ATTAPULGITE / FULLERS EARTH
    • HEMATITE
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