There are many similarities and differences between the high-efficiency Thickener Used in mines and the ordinary thickener. In short, the high-efficiency thickener is an upgraded version of the ordinary thickener, and its performance in all aspects is not the same as that of the ordinary thickener. The following is to introduce the differences between the two.Performance comparison between ordinary thickener and high efficiency thickener:(1) The rotary device of ordinary thickener depends on the plane bearing fixed between the turntables. Because the thickener is immersed in pulp or acid water for a long time, the corrosion is serious, which aggravates the wear of plane bearing, causes the turntable to sink, and affects the normal operation of the equipment. The central drive high-efficiency thickener adopts turntable bearing, which is a kind of large-scale bearing with special structure that can bear axial load, radial load and tilting moment at the same time. It has the characteristics of compact mechanism, convenient guide rotation, simple installation and easy maintenance.(2) Scraping device and rake device are controlled by hydraulic pressure to lift rake automatically or manually, which provides convenience for equipment maintenance. The scraping and collecting device of ordinary thickener is an integral steel structure. If there is a problem, the thickener needs to be shut down, and the slurry in the tank can be completely emptied before it can be removed and replaced for maintenance. If there is a problem with the scraper or rake device of the central drive high-efficiency thickener, it can be lifted out of the water for maintenance. It does not need to be as troublesome as the ordinary thickener, which greatly reduces the difficulty of maintenance.(3) The central drive high efficiency thickener has advanced hydraulic control system. The central drive and rake lifting mechanism share a combined hydraulic pump station. It adopts advanced and reliable electro-hydraulic combined system and is equipped with two sets of automatic detection devices, which can automatically measure the actual resistance of the scraper and the pressure of the hydraulic system. The resistance of the scraper is detected by the sensor. Combined with the pressure in the main drive oil circuit, a signal is sent to PLC to control the lifting and lowering of the rake. The signal detection is comprehensive and accurate, the action is safe and reliable, and there is no pressure harrow phenomenon. The height of deposited materials can be projected through the automatic detection device.(4) The adjustable thickener underflow automatic discharge system is equipped with a concentration meter, and the change of electric signal and concentration is used as negative feedback control variables to realize the automatic adjustment of the thickener working process, improve the production capacity of the high-efficiency thickener and reduce the solid content in the clean water.
The pulp temperature also plays a decisive role in the flotation effect. If the pulp temperature is increased properly, the flotation speed and higher flotation index can be improved. At the same time, the pulp temperature also has a certain influence on flotation reagents. Generally speaking, when the pulp temperature is high, the effect of inhibitors and activators is enhanced and accelerated. When the pulp temperature is low, the effect will be relatively slow and the flotation index will be reduced. Therefore, in order to ensure the flotation index, we should pay attention to the adjustment of pulp temperature at any time. For the concentrator enterprises with rich production experience, they all know the importance of temperature to the flotation process, and it is absolutely not advisable to simply adjust the pulp temperature.Flotation process is one of the important processes of mineral processing equipment, and flotation machine is the main representative of flotation process, which perfectly shows the advantages of the process. In the production process, if you want to give full play to the effect, the key is to grasp the mixing strength and time. Stirring intensity controls the reaction between ore particles and reagents, and stirring time determines the reaction effect. They complement each other and are closely related.In the flotation process of flotation machine, the stirring of pulp can be divided into two stages: one is the stirring before the pulp enters the flotation machine; The second is the mixing after the pulp enters the flotation machine. The former is carried out in the adjustment tank, and its function is to accelerate the interaction between ore particles and chemicals. The latter agitation in the flotation machine is to make the ore particles suspended and bubbles dispersed, and promote the attachment of ore particles to bubbles. Strengthening the stirring in the adjusting tank can promote the interaction between ore particles and reagents, shorten the adjusting time of pulp and save the dosage of reagents. The stirring intensity of the adjustment tank depends on the impeller speed. The impeller speed is higher, the stirring intensity is greater.The strength of any process is not the greater the better, there are suitable for their own optimal value. Appropriate stirring intensity can only make the flotation process twice the result with half the effort. When the strength exceeds the optimal value, it will cause a series of unnecessary troubles, such as equipment wear and falling off of mineral particles attached to bubbles, etc. The stirring time is related to the nature of the reagent, which can be analyzed according to the actual situation.
Conveyors can be divided into installation and repair integrated conveyors, belt conveyors, screw conveyors, bucket elevators, roller conveyors, plate chain conveyors, mesh belt conveyors and chain conveyors.Conveyor field application method:First, explain the composition of the belt conveyor system: the belt conveyor is the most important bulk material conveying and loading and unloading equipment. It can be widely used in mining, metallurgy, building materials, chemical, electric power, food processing and other industrial fields. In coal mines, metals Mines, steel companies, ports, cement plants and other places can see a large number of applications of leather machines. Transportation machinery can not only complete the transportation of bulk materials, but also transport finished materials, but according to the location of use, working environment, and transportation of materials Different types, there will be big differences in its design and application;The modern conveyor system has higher requirements for dust prevention. For this reason, there is a device for sprinkling dust at each junction, and a windshield or windshield will be installed along the belt conveyor. The system is composed of a single machine Yes, for operators and repairers who work in the complete system, they must be based on the single machine they are in charge of, but also understand the interconnection between the systems. The single machine is composed of many components. Daily maintenance and keeping it in good working condition can ensure the safe operation of the equipment;We will generally meet various operating conditions according to the use of belt conveyors, working environment, technical performance and types of materials to be conveyed. In addition to the more commonly used general belt conveyors, there are A variety of special belt conveyors with new structures, among which the representative ones are: large inclination belt machine, deep groove belt machine and belt press machine, tubular belt type, air cushion belt type, flat turning belt type, line friction Type, corrugated sidewall conveyor belt type transport machinery, etc., for refinement, there can be multiple classification methods, here is the introduction:Classified by purpose, there are general mobile type, underground selection type, fixed type for open pit mine, special structure type, removable conveyor, special reprinting function type for loader, large angle conveyor, etc., generally short-distance in-plant conveyor It can complete horizontal, upward or downward transportation. The reversible pattern belt conveyor can be used to convey materials in both directions. The cantilever machine is usually installed on a stacker and can be rotated to achieve the function of soil discharge or cloth. The overhead crane is usually used in conjunction with other bulk material handling equipment. For example, in the application of hydropower construction, it can be equipped with a standard middle frame, which is set on the sleeper and can be easily moved;Classified according to the type of transportation materials, there are belt conveyors for general loose materials, hard materials, and single-piece materials. They are classified according to the position of the load-bearing section of the rubber conveyor belt, including the belt load-bearing section above and the load-bearing section. There are three types of two-way conveyors with the lower section and the upper and lower bearing sections at the same time. The two-way conveyor can transport materials in the upper branch and the lower branch respectively, but in order to keep the material contact surface unchanged, the rubber belt needs to be regularly flip.
Jaw crushers are mainly used as coarse crushers and medium crushers in mining, building materials, infrastructure and other sectors. According to the width of the feed port, it is divided into three types: large, medium and small. The width of the feed port is greater than 600MM for large machines, the width of the feed port is 300-600MM for medium-sized machines, and the width of the feed port is less than 300MM for small machines. machine. The jaw crusher has simple structure, easy manufacture and reliable operation. Working principleThe working part of the jaw crusher is two jaw plates: One is the fixed jaw (fixed jaw), which is vertically (or slightly inclined at the upper end) fixed on the front wall of the body; the other is the movable jaw (moving jaw), the position is inclined, and the fixed jaw forms a large and small crushing cavity (working cavity). The movable jaw plate makes periodic reciprocating motion against the fixed jaw plate, sometimes separating and sometimes approaching. When separated, the material enters the crushing cavity, and the finished product is discharged from the lower part; when it is close, the material installed between the two jaws is crushed by squeezing, bending and splitting.Jaw crushers can be divided into simple swing jaw crushers (simple pendulum jaw crushers) according to the different swing modes of the movable jaw. There are three types of complex swing type jaw crusher (compound swing type jaw crusher) and comprehensive swing type jaw crusher. Advantage1. It effectively solves the problems of high operating rate and no maintenance time caused by the low output of the original limestone crusher.2. It can complete the crushing of large pieces of limestone, the maximum crushing particle size is 1000*1200mm. Effectively solve the original problem: on the one hand, there is a shortage of limestone supply and the problem of unusable storage of large amounts of limestone.3. The mixing uniformity of the two materials is good, and the mixing amount of desulfurized limestone is greatly increased. The dosage can reach 60%, effectively reducing the cost of raw materials.4. Power consumption has decreased. The electricity consumption of 1 ton of limestone is reduced by 1-2KWh/t, which can save 100,000 yuan in electricity bills every year.5. The waste product has a small particle size, only 2-15mm, which effectively solves the problem of the original limestone with a large particle size, often blocking the flow and even affecting the output of the mill.
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