Centrifugal Concentrator Separator/Nelson Concentrator

• Model NO.: STLB20. STL30. STL60. STL80. STL100
• Transport Package: Standard Container
• Specification: National Standard
• Trademark: Dingbo Machinery
• Origin: Shanghai, China
• HS Code: 8474209000
• Production Capacity: 100 Sets Per Month

Product Description

Nelson concentrator
Knelson concent rators are efficient centrifugal concentrators. It is suitable for the recovery of precious metals such as gold, silver and platinum from ore and other solid materials and has been successfully used in the selection of other heavy minerals. The practice shows that it has become the reprocessing equipment used by many new and rebuilt gold and non-ferrous metal concentrators with precious metals. As one of the main ore dressing methods, gravity ore dressing has the characteristics of no environmental pollution and wide potential application. However, in the past quite a long period of time, as mineral resources become more difficult to choose, it is generally believed that their technological development space and application scope have been very limited. The high times of "enhanced gravity" produced by centrifugal action provides the theoretical possibility for further development of gravity concentration. The emergence of various centrifugal concentrators is based on this. However, the material separation bed layer is quickly crushed and the lack of sufficient effective separation time has been the biggest drawback of this kind of equipment.
Mr. Byron Knelson succeeded in solving this problem by inventing the nelson concentrator, named after his last name. It has been proved that it can be well applied to the selection of precious metals and many other minerals, and has been widely recognized and adopted worldwide. Nelson concentrator water jacket centrifuge in using the traditional processing principle of centrifugal separator, and a distinctive recoil pressure within the mineral components of surface water, in order to overcome the traditional centrifugal separator in ore dressing process, because the seam harden, resulting in a decline in ore dressing recovery rate of defects. This new feature is achieved by adding a water jacket to the centrifuge in a special way.
The ore dressing test proved that the selected heavy ore with particle size less than 4mm was tin ore, lead ore, stibnite, silver ore, gold ore and other heavy ore, and the recovery rate of heavy ore could reach more than 90%. Heavy ores with particle size less than 2.5mm were selected, and the recovery rate of heavy ores reached over 92%.
Working principle:
Water jacket type centrifugal concentrator is composed of feeding pipe, machine frame, tailings trough, driving motor, shaft and ore dressing parts.
Mineral components into the inside and outside two layer, inner layer to wear head cone, the inner vertebral bodies by stainless steel, with a ring of article, cone wall with many small holes through them, for ordinary steel plate, the outer forms a closed water jacket and the inner layer.
In the drive shaft for the hollow shaft, hollow shaft to the water pressure in the inner and outer layer of the cone in the formation of the water jacket, by the inner holes between continuous spraying water into the riffle, recoil water formation, separation process, the recoil water pressure: 0.03-0.03 MPa.
After grinding and screening of ore grain feed pipe at the center of the state of pulp by the upper through, to selected mineral components, under the effect of high speed rotating centrifugal force, the pulp upward movement along the cone, light minerals from the tailings groove cone around the upper row to, from the tailings discharge; Heavy minerals are deposited in interlaterals under the action of centrifugal force, actually on the inner cone.
Product description
Gold Centrifugal Concentrator is based on the law of centrifugal force and it has been developed and improved on the traditional centrifugewhich could save much energy .Alleviated the suction effect, heavy grains get full settlement in the mineral which greatly improve theequipment Specific ability of selection and recovery rate that can up to more than 90%.
Advantages
The recovery rate increase the Sn:3.01%,W:5.5%,Pb:1.63%,Zn:2.04;water consumption reduced by 30% - 40%, working operationarea reduced by 1/3, the strokecan be adjusted by electromagnetic adjustable speed motor so that can achieve impulse stepless speedregulation . Its performance reaches the domestic advanced level, and is one of the ideal energy saving re concentration equipment atpresent
Working Principle
Gold Centrifugal Concentrator is composed by the pipe, track, tailing tank.drive motor,vertical axis and mineral processing componentswith other components .The ore-forming parts are divided into inner and outer layers.the inner layer is a conical cone made of stainlesssteel and has many small holes with the a ring grid . the outer layer made of ordinary steel form a closed water jacket with the inner.
The transmission shaft is a hollow, the pressure water is transported to the closed jacket though the hollow shaft. The water jet is continuouslyinjected from the inner hole to form the reverse flushing water, and the reverse flushing pressure position is arranged in the sortingprocess. 0.03-0.06MPa
The mineral particles after grinding and sieving will be feed to the pipe through upper center in slurry form . The miner in the feeding
dressing part is effected by the centrifugal force of high-speed rotation will upward along the cone.The light minerals From the upper
periphery of the cone is discharged into the tailings tank and then exhaust from the outlet of tailings. The heavy minerals is depositedbetween bars Under the influence of centrifugal force, actually deposit on the inner cone.

Equipment model	STL 19	STL 30	STL 60	STL 80	STL 100
Productive capacity(T/h)	0.2-1	2-8	10-40	35-70	75-120
Feed grain(mm)	0-3	0-4	0-6	0-6	0-6
Feed concentration(%)	0-50%	0-50%	0-50%	0-50%	0-50%
Recoil water(T/h)	1.5-2	,4-6	,10-15	17-25	40-60
Concentrate production(kg/time)	,2-3	,10-20	30-40	60-70	70-80
The motor power(kw)	0.75	1.5	4	11	18.5
Cone rotational speed	800	600	460	400	360
The pressure of waterMpa	0.04	0.12	0.25	0.35	0.4
Overall dimensions(mm)	790*785*790	1180*1140*1250	1970*1670*1750	2300*1800*2200	2500*2000*2400