Naslov
Beneficiation of Sand from the Sava-River Bed

Autori
Salopek, Branko ; Bedeković, Gordan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the XXI International Processing Congress / Massacci, Paolo - Rim : Elsevier, 2000, C11-26

Skup
XXI INTERNATIONAL MINERAL PROCESSING CONGRESS

Mjesto i datum
Rim, Italija, 23.07.2000. - 27.07.2000

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
gravity concentration ; sand ; coal particles ; grade ; recovery

Sažetak
Gravel from the Sava-river bed contains coal particles, which remain in sand after classification. The coal content in class –4 mm ranges from about 0, 5 to 2 %, while in relatively close classes, such as 1/0, 5 resp. 2/1 mm it is even up to 6, 23 resp. 6, 37 %. The possibility of separating coal particles from sand was tested on standard equipment used at gravity concentration, which are: the jig, the shaking table and the spiral. The tests were made with classes 4/1 ; 4/0, 5 ; 2/1 ; -1 ; 1/0, 5 and –0, 5 mm, where the coal content in sand was 1, 3 and 6 %. The best results were reached with the jig, where sand recovery ranged from 73 to 80 %, while the coal content in separated sand was 5 to 6 times lower than in the feed. The tests with spiral showed recovery even to 98 % but the coal content was only 3 to 5 times lower than in the feed. The separation tests made on the concentration table showed relatively good results with recovery from 80 to 97 %. On the ground of investigations carried out on adequate samples it is proposed that for the elimination of coal particles from Sava sand air jigs must be used, so that by sand quality the prescribed norms can be satisfied.

Izvorni jezik
Engleski

Znanstvena područja
Rudarstvo, nafta i geološko inženjerstvo

POVEZANOST RADA