Bentonite Managing company
Bld.12/1, Tverskaya St., Moscow
Tel.
+7 (495) 626 51 49

Bentonite for iron-ore pelletizing

Pellets

While interacting with the water, bentonite clay expands and becomes sticky. 

This property allows to effectively use it as a binder for the production of pellets from iron ore concentrate (wet, crushed iron ore that has been beneficiated). 

Pellets are used in blast-furnace redistribution and electrometallurgical production. Their shape is optimal for the process of efficient smelting into cast iron and the process of direct production of iron.

PELLET PRODUCTION INCLUDES TWO STAGES:

  • Formation of wet granules of the required size from iron ore charge materials using the pelletizer;
  • Sintering of these granules in indurating machines to such an extent that they carry long-distance transportation, overloads, heating and smelting in furnaces. 

Thus, bentonite acts not only as a bonding component, but also creates strong intergranular contacts that contribute to the reduction of cracks at high temperatures, giving strength to the pellets.

Fig.1 - Blast-furnace cast iron production from pellets  made with bentonite

Fig.2 - Pellets production (making) on disk-type granulator

 

Interesting fact: for the production of pellets (balls) with a size of 12-16 mm it is enough to add 5-8 kg (0,5-0,8 %) of bentonite in the wet concentrate per 1 ton of charge materials.

The following types of bentonite products produced from the high-quality bentonites of “10th Khutor” (Khakassia), Ziryanskoye (Kurgan region) and Dash-Salakhlinskoye (Azerbaijan) deposits are used for the production of iron ore pellets:

ACTIVATED BENTONITE
It has the full complex of rheological properties necessary for pelletizing, agglomeration and briquetting.
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CRUSHED BENTONITE
t is produced by crushing natural bentonite clay from one or several deposits (“10th Khutor” , “Zyryanskoe”, etc.). It is successfully used for the manufacturing of pellets at Evraz Kachkanarsky GOK JSC, where clay is activated under conditions of its own production.
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BENTONITE POWDER FOR CHROMITE PELLETS
The unique developments of the products manufactured by our enterprises are relevant in the production of pellets, agglomerate and briquettes. Thus, bentonite powder is successfully used at JSC “Donskoy …
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Продукция нашей компании используется АО «Карельский окатыш», АО «Евраз Качканарский ГОК», ПАО «Михайловский ГОК», АО «Оскольский электрометаллургический комбинат», АО «Лебединский ГОК», ОАО «Донской ГОК» (Казахстан) и другие.

С нами гарантированно и успешно можно решать любые задачи и устранять проблемы в технологии и по качеству окатышей, агломерата и брикетов.

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