Bentonite Managing company
Bld.12/1, Tverskaya St., Moscow
Tel.
+7 (495) 740 43 55

ACTIVATED BENTONITE

Fig. 1 Activated bentonite from “10th Khutor” deposit

Bentonite for iron ore pelletizing is mined on “10th Khutor” (Khakassia) and “Dash- Salakhlinskoye (Azerbaijan) deposits.

Bentonite of Dash- Salakhlinskoye deposit is high-quality, alkaline (sodium) clay with montmorillonite content over 80%. Application of rational technologies for activation allows getting a high-quality alkaline bentonite which possesses a full range of rheological properties necessary for pelletizing, sintering and briquetting:

Swelling number

 

ml/2g ≥28

Effective viscosity

mPa/s ≥30

ENSLIN number

% ≥650

Thermal stability

unit 0,90-0,98

Moisture mass fraction

% менее 23%

Properties of Dash-Salakhlinskoye bentonite are close to the best world analogues.

Bentonite characteristics:

  • high montmorillonite content;
  • high thermal stability;
  • can be used both in natural and in activated form.
Fig. 2. Stockpiling activated Khakassian bentonite in accordance with Technical Specification for Iron ore pelletizing plant (IOP). 

The use of Dash - Salakhlinskoye bentonite in the charge materials contributes to the production of pellets with a low damage ratio at high-temperature firing process and their high fracture resistance due to thermal stresses. The use of bentonite contributes to fines reduction in the pellets and to the reduction of abrasion during transportation.

When using Dash - Salakhlinskoye bentonite, costs per unit are reduced by 10-15% compared to existing analogues.

Вentonite of “10th Khutor” deposit (Khakassia) is alkaline-earth, with a high montmorillonite content. Bentonite is artificially converted to the sodium (alkaline) form by activating it with soda ash. It has the full complex of rheological properties necessary for pelletizing, agglomeration and briquetting technology:

  • dust-free;
  • easily crushed;
  • provides reliable and efficient operation of equipment;
  • has optimal kinetics of fluid loss during drying;
  • due to the combination of rheological properties, it allows optimizing bentonite consumption in the change material at the level of 0.5-0.8%;
  • is good at moisture absorption in the concentrate, saturating and actively dispersing, and at the same time forming fluid pore suspensions with multiple contact bonding.

Bentonite with the following quality parameters is supplied to the customers:

Swelling number

ml/2g ≥28

Effective viscosity

mPa/s ≥28
ENSLIN number % ≥650

Thermal stability

unit 0,8-0,9

Moisture mass fraction

% less 23%

Depending on the needs of IOPs, we can supply dried bentonite with a narrow humidity range.

Our products have been successfully used for a long time by:

JSC “Karelsky Okatysh”, PJSC “Mikhailovsky GOK”, JSC “Oskol Electrometallurgical Plant”, JSC “Lebedinsky GOK”, JSC “Stoilensky GOK”

We will help with guaranteed and successful solution and eliminate problems in technology and in the quality of pellets, agglomerate and briquettes. 

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