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According to the type of ore reasonable choice of lining material
　　
Slurry pump lining a wide range of materials, such as high-chromium cast iron, high-chromium white cast iron and wear-resistant rubber, the face of the choice of many materials, many businesses are indecisive. The choice of high-chromium cast iron material, its anti-wear performance is good, only the slurry contains coarse, sharp concentrator use; high-chromium white cast iron material wear resistance, but its toughness, can not afford large solid particles quickly Of the impact, otherwise it will cause the impeller surface material off, easy to corrosion due to the formation of pits; wear-resistant rubber wear-resistant materials, corrosion resistance are superior to metallic materials, flexible, but only suitable for conveying fine angular Granular slurry. Therefore, the choice of slurry pump lining, according to the type of ore to make a reasonable choice, so as to improve pump usage.
　　
According to the actual needs of the flow and lift options
　　
General users in the slurry pump selection, only pay attention to the selection of pump flow, ignoring the choice of pump head, and some even think that the higher head, the more insurance, so the choice of slurry pump head is greater than the actual lift needs, and even A lot of waste of electricity.
　　
Slurry pump selection should be based on the actual lift needs to choose to reduce the number of installed capacity and save energy. In addition, it should be noted that in calculating the head, you need to consider the loss of head, to avoid insufficient pump head, which affects the efficiency of pump irrigation.
　　
　　 Motor and slurry pump power must be matched with reasonable
　　
Motor and slurry pump power unreasonable supporting, mainly in the "big cattle pull plow, calf pull plow" two aspects, especially the first kind of phenomenon is particularly large, matching the power selected large, resulting in a very waste of electricity Big. The latter supporting the power selected small, that is, "pull the big plow veal," will result in insufficient supply of slurry pump slurry. Motor overload or with a fixed pump, can not guarantee the safety of equipment, economic operation, must be reasonable motor and slurry pump power, is the solution.
　　
Scientific and reasonable installation of slurry pump
　　
If conditions permit, when loading pump, try to reduce the amount of elbow, or cancel the "three valves", the best straight pipe, short, do not set the outlet pipe "anti-aircraft" type, can take the next installation, tilt installation Method to reduce the loss. Pipe diameter size of the loss of great impact, it is best to take a slightly larger diameter of the slurry pipe diameter of a pump class, can improve the pump delivery efficiency.
　　
More than four kinds of slurry pump is the rational choice and use of introduction, as long as the beneficiation plant reasonable use of these methods, it will certainly increase their own concentrator production efficiency, energy-saving and efficient to achieve the purpose.
PEEK Plastics,Polyether ether ketone, known in English as polyetheretherketone plastic (PEEK Plastics), is a linear aromatic polymer containing chain sections in the main chain of molecules.Its constituent units are oxygen-pairs of phenyl-oxycarbonyl - pairs of phenyl, semi-crystalline, thermoplastics.
Product name: polyether ether ketone (PEEK Plastics) resin is a kind of excellent special engineering plastics, PEEK Plastics has more significant advantages compared with other special engineering plastics, resistance to high temperature is 260 degrees, mechanical performance, good self-lubrication, resistance to chemical corrosion, flame retardant, stripping resistance, abrasion resistance, no strong sulfuric acid, nitric acid resistance, radiation resistance, strong mechanical properties can be used for high-end technology such as mechanical, nuclear engineering and aviation.
PEEK Plastics has heat resistance, chemical stability and the forming process of thermoplastic plastic. PEEK Plastics has excellent heat resistance.Its thermal deformation temperature of 160 ℃, with 20% ~ 30% Glass Fiber reinforced, heat distortion temperature can be increased to 280 ~ 300 ℃.Polyether ether ketone is good, the thermal stability of 420 ℃ in air.2 h under weightlessness is only 2%, at 500 ℃ was 2.5%, significantly thermo-gravimetric 500 ℃.Polyether ether ketone of long-term use of temperature is about 200 ℃, under this temperature, still can keep the high tensile strength and bending modulus, PEEK Plastics is also a kind of very strong material, has excellent resistance to creep and fatigue performance for a long time.
PEEK Plastics electrical insulating performance is very excellent, volume resistivity of about 10 ~ 10 Ω · cm.It still has small dielectric constant and dielectric loss in high frequency range.For example, in 10Hz, the dielectric constant in the room is only 3.2 and the dielectric loss is only 0.02.
The chemical stability of polyether ether ketone is also very good. In addition to concentrated sulfuric acid, almost any chemical reagent is very stable, even at high temperature, PEEK Plastics can maintain good chemical stability.In addition, PEEK Plastics has excellent heat resistance and steam resistance.In 200 ~ 250 ℃ steam can be used for a long time.
PEEK Plastics with good flame retardancy, in normal circumstances it is difficult to burn, even burning, smoke and harmful gas release a quantity to also is very low, even lower than low smoke volume of polymer such as ptfe.In addition, PEEK Plastics has excellent radiation resistance.Its resistance to alpha rays, beta gamma rays and gamma rays is the best current polymer material.The wire products covered with it can withstand gamma rays of 1.1 x 10Gy.
The polyether ether ketone has good fluidity and thermal stability at the melting point.Therefore, PEEK Plastics has the typical processing performance of thermoplastic plastic. Therefore, it can be used for injection molding, extrusion, blow molding and laminating, and also spinning and making films.Although the polyether ether ketone melt processing temperature range is 360 ~ 360 ℃, but because of its thermal decomposition temperature above 520 ℃, and it still has the very wide processing temperature range.
Although the development history of PEEK Plastics is only a short 20 years, but because PEEK Plastics has the outstanding heat resistance, chemical corrosion resistance, radiation resistance and high strength, easy to machining, PEEK Plastics is currently in the nuclear industry, chemical industry, electronic appliances, machinery, instrument, automobile industry, and has been widely used in aerospace field.In particular, thermoplastic resin, which is excellent in heat resistance, can be used as the base material of high performance composite materials.
modified
PEEK Plastics performance of the pure material is difficult to meet the different needs of different industries, in special working environment need to modification of PEEK Plastics, its main means blending modification, copolymerization modification, reinforced composite, infill modification, nanometer modification and surface modification technology.The modification can increase the performance of PEEK Plastics, such as wear resistance, impact strength, etc., thereby extending the application range of PEEK Plastics, reducing the cost of materials and improving the processing performance of PEEK Plastics.
Application
PEEK Plastics has been widely used in aerospace, automotive manufacturing, electronics, medical and food processing.
PEEK Plastics has excellent performance, its application field will be more widely with the domestic application research, the current domestic set up the chongqing sanxin materials research center is a professional engaged in the research of PEEK in the field of application.The research center is under the chongqing government entities at all levels of leadership and care, is committed to in the field of automobile, electrical and electronic fields, transportation research, in the present walk at the forefront of the domestic application research.
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