Introduction

Sand collecting/gold separating dredging depth3-15m,capacity 100-500m3/h river gold / placer dredger machine work in water of river is competitive,composed by 2 parts. The 1st part is the sand or mud dredging system. This system used buckets to scoop the sand,mud and gravels up then delivered by the 2nd part transporting system to trommel screen classifier.

Then the trommel screen classifier will separate the big stone,gravels firstly when breaking the clay with the iron chain which makes it easy to get the clean sand.If there are gold in the sand it can also add the gold concentrating machine such as gold centrifugal concentrator,shaking slucie to get the gold.
The delivery of sand usually using sand transport barge or by sand pump and pipes to send the sand to board.

Technical process

The material from the bucket shipped into the trommel screen fixed with 4 reamers which can ream and wash the clay off,then to be separating into 3sizes <6mm,6-30mm ＞30mm,the biggest size useless are directly discharged to waste area by scrap sluice;
6-30mm material into shaking chute for recycling, scrap material discharged into the waste area;
The small size material <6mm gettinginto the material box through sand pump feeding into a horizontal auto&no break discharging centrifuge, then the concentrate got and finally into fine material box, scrap material to be get rid from waste pipe.