The SF flotation machine was successfully developed by the North Mining Institute in 1986. Initially, the SF type and the JJF type flotation machine form a combined unit. The SF flotation machine is used as the first tank of each operation, which acts as a self-priming slurry so that it can be returned to the middle mine without a ladder configuration and without a foam pump. The JJF flotation machine is used as the DC tank of the first tank to obtain high selection. Indicators, thereby playing their respective advantages. Later, the SF flotation machine was used alone and the effect was better.
(1) Structure and working principle. The structure of the SF type flotation machine is shown in Fig. 1. It is mainly composed of a tank body, a spindle component equipped with an impeller, a motor, a scraper and a transmission thereof, and a diversion tube and a false bottom are provided with a volume larger than 10 m 3 .
When the SF flotation machine is in operation, the motor drives the main shaft through the V belt to rotate the lower impeller. The main feature of this flotation machine is shown on the impeller. The impeller has a back-tilted double-sided blade to achieve double circulation of slurry in the tank. When the impeller rotates, the slurry in the upper and lower impeller chambers generates centrifugal force under the action of the upper and lower blades (ie, the main and auxiliary blades) and is twisted to the periphery, so that a negative pressure zone is formed in the upper and lower impeller chambers. At the same time, the slurry in the upper part of the cover plate is sucked into the upper impeller cavity through the circulation hole on the cover plate to form a slurry circulation. The slurry extracted from the lower impeller chamber is larger than the three-phase mixture extracted from the upper blade, so the centrifugal force is large, the movement speed is slowed down, and an additional driving force is generated for the three-phase mixture of the upper blade. The centrifugal force is increased, thereby increasing the degree of vacuum in the upper impeller chamber and assisting the suction. When the lower blade pulls out the slurry around, the lower slurry is replenished to the center, thus forming a lower circulation of the slurry. The air is sucked into the upper impeller chamber through the suction pipe and the central cylinder, and is mixed with the sucked slurry to form a large number of fine bubbles, which are uniformly dispersed in the groove through the cover plate to form mineralized bubbles. The mineralized bubbles float up to the foam layer and are scraped off by the scraper to form a foam product.
(2) Main features. 1 large inspiratory capacity, low energy consumption; 2 self-priming air, self-priming slurry capacity, horizontal configuration, no need for foam pump; 3 low impeller circumferential speed, long service life of wear parts, gap between impeller and cover plate Larger, the impeller and the cover plate increase the gap due to wear and have less influence on the inspiratory volume; the slurry in the 4 trough is subjected to the upper and lower double cycles in a fixed flow mode, which is beneficial to the suspension of the coarse-grained mineral.
The structure, characteristics and working principle of JJF flotation machine can be found in the section "XJQ type and JJF type flotation machine".
According to the process requirements, the working unit can be configured according to actual needs. The 4-type flotation machine has a maximum of 8 slots per group, the 8-type and 10-type flotation machines each have a maximum of 6 slots, and the 20-type flotation machine has a maximum of 5 slots per group. .
The user needs to order the flotation machine process configuration diagram. In the configuration diagram, it should be noted: 1 number and configuration scheme of flotation tank; 2 number of scraper transmissions (left or right); 3 number of ore tanks, intermediate tanks and tailings bins; Box and tailings overflow flaps are controlled manually, electrically or automatically; 5 users who have special requirements should make an order when ordering.
Product example:
1. Internal machine The SF type and JJF type flotation machine produced by the factory and its technical performance are listed in Table 1. The wearing parts are listed in Table 2. The external dimensions of the equipment are shown in Figure 2 and Table 3. The equipment flow configuration is shown in image 3.
2. Jiangsu Baolong The technical parameters of the SF flotation machine produced by Jiangsu Baolong are listed in Table 4. The external dimensions are the same as those of the above internal machine.
3. Shicheng Mining Machine The factory produces SF flotation machine according to the drawings provided by the North Mine Institute. The quality inspection is strict and the performance is reliable.
The SF type flotation machine produced by the factory and its technical performance are listed in Table 5. The external dimensions are shown in Figure 4 and Table 6, and the wearing parts are listed in Table 7.
4. Tobacco Mine The SF and JJF flotation machines produced by the plant and their technical performance are listed in Table 8. The external dimensions are shown in Figure 5 and Tables 9 and 10.
5. The plant machinery Yinxing Nanjing SF flotation machine production and technical properties are shown in Table 11.
6. North Mine Institute The BF flotation machine is an improved version of the SF flotation machine from the North Mine Institute (Fig. 6). It was recommended as an excellent energy-saving product in 1994 and won the national invention patent in 1999. Its characteristics are: 1 impeller consists of closed double-section cone, which can produce strong slurry circulation; 2 large inspiratory capacity, low power consumption; 3 each tank has three functions of suction, suction and flotation, from Into the flotation circuit, no auxiliary equipment, horizontal configuration, easy to change the process; 4 slurry circulation is reasonable, can minimize the coarse sand sedimentation; 5 with slurry surface automatic control and electronic control device, easy to adjust.
The technical parameters of the BF type flotation machine are shown in Table 12, and the external dimensions are shown in Fig. 7 and Table 13.
   figure 1  figure 2  image 3  Figure 4  Figure 5  Figure 6  Figure 7
   Table 1   Table 2  table 3  Table 4  table 5  Tables 6, 7  Table 8  Table 9, 10  Table 11  Table 12
Table 13
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