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KYF-50 large-scale pneumatic mechanical stirring flotation machine works as follows: When the impeller rotates, the slurry in the tank is sucked into the impeller from the periphery of the tank through the bottom of the tank from the lower end of the impeller. At the same time, the low-pressure air fed by the blower enters the impeller through the hollow main shaft. In the air distributor of the cavity, the hole around the distributor enters between the impeller blades, and the slurry and air are thoroughly mixed between the impeller blades, and then discharged from the periphery of the upper half of the impeller, and the discharged ore flow moves obliquely upward, and is installed on the impeller. After the stator above the diagonally upper side is stabilized and oriented, it enters the entire trough.
The mineralized bubbles rise to the surface of the trough to form a foam, and the foam overflows into the foam chute. A part of the slurry returns to the impeller area for recycling, and the other part passes through the flow hole in the inter-groove wall to enter the lower trough for re-selection. The high and low level of the slurry surface of KYF-50 flotation machine is converted into 4~20mA standard signal by the liquid level transmitter, and sent to the controller to display the liquid level value, and compared with the set value, according to the difference Direction and size, output the corresponding control signal, and send it to the pneumatic actuator to make the corresponding change of the discharge gate to ensure that the slurry level is maintained at the set value.
The flotation machine with a single tank volume of 50m3 can achieve a maximum aeration of 2m3/m2.min during industrial test; the actual power consumption is between 45 and 50kW, which is 25% lower than the original installed capacity;
Compared with the original process BS-K-16 flotation machine, the grades of nickel and copper concentrates increased by 2.3% and 1.4% respectively, magnesium oxide decreased by 4.1%, and nickel and copper operation recovery rates increased by 0.1 respectively. % and 2.3%;
Compared with the original process, the second-stage sweeping selection index increased the nickel and copper concentrate grade by 0.06% and 0.06%, respectively, and the nickel and copper operation recovery rate increased by 14.78%, respectively. 12.3%. The KYF-50 flotation machine has stable operation and strong stirring force. The distribution of ore particles is uniform in all areas of the tank, no turbulence, the foam layer is stable and the thickness can reach 100-200mm. The liquid level automatic control system works normally and the control precision Meet the process requirements.
The 50m3 flotation machine is the largest single-slot flotation equipment in China, which fills the gap in the domestic large-scale flotation equipment. The equipment overcomes the disadvantages of low recovery rate of coarse-grained grade of large-scale inflatable flotation machine, and the selection index and comprehensive technical performance have reached the advanced level of similar foreign equipment.
Significant application benefit KYF-50 large inflatable mechanical agitating flotation machine can be widely used in the sorting of large non-ferrous metals, ferrous metals and non-metallic mineral mining enterprises. The direct economic benefit is that it can greatly reduce the total processing of tons of ore. Cost; simplify the design and layout of the flotation section, reduce the floor space, reduce capital investment or renovation costs; significantly reduce maintenance costs.
The social significance of the successful development of the flotation machine is to completely change the monopoly situation of large-scale flotation equipment by foreign manufacturers, improve the equipment level of large-scale mine flotation equipment, promote the large-scale and modernization of mine construction, and strengthen domestic design institutes. To undertake the capacity of large-scale domestic and foreign projects and improve the competitiveness of China's large-scale flotation machines in the international market.
The KYF-50 flotation machine was successfully applied in Jinchuan Nonferrous Metals Co., Ltd. and achieved an ideal selection index. Save direct investment of nearly 20 million yuan, improve the efficiency of the indicator of 30 million yuan per year. If the equipment is used in the new system and the old system transformation of the Jinchuan Nonferrous Metals Company's concentrator, it can save foreign exchange of 7.3 million US dollars and reduce production costs.
Broad prospects for the promotion of results
The promotion and application of this equipment must be closely combined with the actual situation of China's mine selection plant. During the “10th Five-Year Plan†period, firstly select 1 or 2 large-scale non-ferrous mines in China for promotion, establish application demonstration points, consolidate the use effect, and then in other large scales. Mine promotion. At present, Jinchuan Nonferrous Metals Co., Ltd. and Baotou Iron & Steel Co., Ltd. have obtained applications, and other units are contacting.
meeting China national & international standards requirements.
China's super large inflatable mechanical stirring flotation machine
Advanced equipment to fill the gap