Hydraulic wrench; Monitors

It is denominated hydraulic monitor to an equipment destined to taking into advantage the use of the strength of water with great pressure and it is used to dismount, loosen, cut, and drag the auriferous materials of an alluvial bank. It consists of a conic tube provided with a tip of different diameters, replaceable according to the necessities of the operation. The conic tube is mounted in an articulated support to produce horizontal, vertical and event angles of 60° movements.

The tips vary in size from 2” to 9” in diameter, the entrance tube of water to the monitor si fabricated from 6” to 15” in diameter, keeping a relation of 2.25 to 2.33 times the diameter of the tip.

Suction and cut dredges (Underwater Bucket Wheel). This is a floating dredge which has a rotational and cutting head that has high potency in the cut, installed in the same entrance of the tubing of suction.

The curved cutter of steel turns to the extreme of a frame under water. It has the inconvenience of dredging selectively; the cost of acquisition of this equipment is very high, since these dredges use strengths even higher than the dredge for the bucket line wheeled dredges, as a consequence pumps and cutters with installed potencies less than 6,000 HPs can not be operated.

Bucket line Wheeled Dredge. It is also a floating dredge, very similar to the cut and suction dredge, with the difference in that the cutting head is replaced by a wheel of buckets for water which turns on top of an horizontal axis and transversal to the suction tubing. It allows the better control of the circulating pulp and avoids losses of material at the moment of extirpation, due to the fact that it is canalized directly towards the entrance of the suction tube.

Bucket line Dredge. It is the only auto contained and of high capacity mobile which can dig, separate, wash, and recuperate the valuable minerals, and deposit its rewashing in a continuous operation. This dredge consists of a barge, in which all the system of digging formed by a line of steel bucket of a water wheel is mounted, fixed on a chain that is moved between two installed drums to the extremes of a structure, and the concentration plant, whose recuperating elements are the jigs and sometimes with the addition of sluices with riflery.

The line of buckets of water wheels feeds the classified dredged Trommel mineral. The thick ones are evacuated through the transporting belt to an empty space left; the fine ones are processed in the concentration plant. The operation with these equipments requires great reserves and sufficient quantities of water, according to the magnitude of the operations.