Investigation on the particle size and shape of iron ore pellet feed using ball mill and HPGR grinding methods

• Autorzy: Abazarpoor A. , Halali M.

Identyfikatory

DOI

10.5277/ppmp170219

• Języki publikacji: EN

Abstrakty

EN

An effect of a grinding method, that is ball mill and high pressure grinding rolls (HPGR), on the particle size, specific surface area and particle shape of an iron ore concentrate was studied. The particle size distribution was meticulously examined by sieve, laser and image analyses. To measure the specific surface area of particles, Brunauer-Emmett-Teller (BET) and Blaine methods were used. It was found that for samples having equal Blaine specific surface areas numbers, the amount of fine particles produced in HPGR was higher than that produced in a ball mill. A higher surface area was observed from HPGR treatment in comparison to ball mill grinding, provided by a higher porosity, cracks, roughness and new surfaces. A shape factor of particles was determined using the circularity, roughness, and aspect ratio. It was also observed that HPGR produced particles that were more elongated, less circular and rougher than those processed by the ball mill.

Słowa kluczowe

EN

HPGR; ball mill; particle size; particle shape; image analysis; SEM

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2017
• Tom: Vol. 53, iss. 2
• Strony: 908--919
• Opis fizyczny: Bibliogr. 26 poz., rys., tab.

Twórcy

autor

Abazarpoor A.

• Materials Science & Engineering Department, Sharif University of Technology, Azadi Street, PO box 11365-11155, Tehran, Iran

autor

Halali M.

• Materials Science & Engineering Department, Sharif University of Technology, Azadi Street, PO box 11365-11155, Tehran, Iran

Bibliografia

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