Article List
- Factors influencing the magnetic separation pause the otherFactors influencing the magnetic separator optional don't associated with magnetic separator magnetic pulley, magnetic pulley is stem what?Dry separation after magnetic pulley commonly used in ore coarse crushing and ultimately broken products into the ground before seeding.Main function is to get rid of useless waste rock, improve the ore grade of into the grinding machine, decrease into the grinding of grinding machine, thus reducing the grinding cost.To know the cost of grinding in the ore dressing production proportion reached 60% ~ 70%, and the dry separation magnetic pulley can be sell in advance the tail mineral rate is as high as 15% ~ 20%.So are the major factors affecting magnetic pulley choose other then what?Does the factor of ore, the operation factors, and is the factor of magnetic separator equipment itself:(1) ore particle size is determined by the magnetic properties of magnetic pulley, if big magnetic pulley specification, the depth of an applied magnetic field, the pIndustry News September 28, 2016
- Aluminum casting processFused cast including melting, refining, removing impurity, degassing, slag and casting process.Main process are:(1) Ingredients:according to the need to produce specific alloy nameplate, calculate the amount of all kinds of alloy composition, reasonable collocation a variety of raw materials.(2) melting: to add with good raw materials according to the technological requirements to melt in the furnace, and through the degassing, slag refining method will melt in the slag, gas effectively removed.(3) casting, smelting good under the certain condition of the casting process of aluminum liquid, through the deep well in casting system, cooling casting into all kinds of round bar.Industry News September 28, 2016
- Vertical ring wet strong magnetic field structure and characteristics of magnetic separatorVertical ring wet strong magnetic field magnetic separator is mainly composed of a metal ring (8 divided into 40 sieve gas grid, grid there a spherical medium) and a "day" glyph magnetic system composed of 4.Vertical rotating ring between the two poles, lower by magnetic field, pulp by lower feed device inside the ring 2 through the ring round sieve grate 11 to into the ring and ring weakly magnetic particles adhesion in medium surface, with the circle turn the ascension to the top of the magnetic field strength is very weak, by the high pressure water 7 people concentrate slot 6.Non-magnetic mineral grains due to the gap from the magnetic effect by media ball, tailings in slot 13.This kind of strong magnetic field magnetic separator is "day" type the closing of the magnetic system, short magnetic circuit and magnetic flux leakage is small, be able to get higher magnetic field intensity and magnetic field gradient, up to 1.4 million/m.Vertical ring wet strong magnetic field magnetic seIndustry News September 27, 2016
- Three methods can eliminate the casting defectsFirst, argon arc welding, precision castings, alloy steel, stainless steel casting, aluminum alloy die castings with argon arc welding machine for welding repair.Part of the mould manufacturing and repair factory, also USES the welding repair mold defect.Advantages: welding repair of high efficiency, high precision of the electric welding machine.Wire sort is more, the most widely used on stainless steel, aluminum alloy products.Can be used for welding, high intensity of teaching.Disadvantages: used for defect repair, small defect fix (porosity, sand holes), because of the impact is too large, the molten pool line trace (bite edge phenomenon).Weld steel has a hard point.Due to thermal effects, non-ferrous casting or thin-walled weld repairs, easy to produce thermal deformation.Operating higher technical requirements.Second, electric welding machine, cast iron, cast steel weld with traditional way.Advantages: repair defects, high efficiency.Disadvantages: solder joints on high hardnessIndustry News September 27, 2016
- Magnetic separator six common faults and the analysis of the measuresMagnetic separator and flotation machine is the most common mineral beneficiation production line machine, its importance is not to look down upon, so failure, should be timely solve, in the process of its use, can appear what common fault, when we meet again should how to solve it, let's discuss the question:1, when you are using iron slag in magnetic separator into obstacles, light person trace the drum peel, the person that weigh stuck cylinder or drum skin cut, when appear this phenomenon should immediately stop you remove obstacles.Iron slag magnetic separator at ordinary times should be forbidden to use manufacturer bolt, nut, wire and other metal objects into magnetic separator.2, when you are using magnetic separator tube in the magnetic iron slag block off, the cylinder with the sound of kaka, serious when the drum skin cut, should immediately stop overhaul at this time.Prevent the magnetic block off again, you can use thin copper at the time of repair will live magnetic systeIndustry News September 26, 2016
- Three heat treatment process of gray cast iron castingGray cast iron casting mainly refers to a flake graphite cast iron, the more thin than cast steel can be obtained and complex casting, cooling speed sensitivity is very big, and gray cast iron after heat treatment process, mainly in the following three ways.1, the stress relievingCastings in the casting cooling process, due to the different cooling rate of each part, easy to produce stress, may result in warping and casting cracks, in order to ensure the dimensional stability, prevent deformation, for some complex shape of castings, such as bed, cylinder block, cylinder head, etc., need to eliminate internal stress annealing.Its specification is commonly: heating temperature of 500 ~ 550 ℃, the heating speed of 60 ~ 120 ℃ / h, furnace cooling after heat preservation time to 150 ~ 220 ℃ from air cooling.2, eliminating casting chilling annealingGrey cast iron surface and some thin section, in the process of condensing cooling speed faster, easier to produce white tissue, increase the harIndustry News September 26, 2016
- Strong magnetic magnetic separator magnetic effect by restricting factorsMagnetic separator according to the strength of magnetic field can be divided into:(1) the weak magnetic field magnetic separator, magnetic pole surface magnetic field intensity H0 = 72 a 136000 / m, magnetic field force HgradH = (2. 5 ~ 5. 0) 2 / m 3 x 1011 Ann;(2) of the magnetic field magnetic separator, magnetic pole surface magnetic field intensity H.= 160 ~ 480000 a/m;(3) strong magnetic field magnetic separator, magnetic pole surface magnetic field intensity H.= 480 ~ 1.6 million l m, magnetic field force HgradH = (1.5 ~ 6.0) x 1013 2 / m 3.Strong magnetic magnetic separator is mainly used to remove miscellaneous stone, improve quality, achieve sales.Weak magnetic equipment lean manganese ore, lean hematite, limonite, non-ferrous metal ore or slag separation, purification, concentrated in the ore and miscellaneous stone separation, thus improve the metal grade of concentrate.Influence of strong magnetic magnetic separator magnetic effect factors are the following:1. Mine magnetiIndustry News September 22, 2016
- 9 ni steel welding process9 Ni steel is w (Ni) is 8.5% ~ 9.5% of low carbon martensite is a cryogenic steel size, is a kind of excellent material used in the manufacture of LNG storage tank.9 ni steel welding, appropriate USES string cable energy, multilayer multipass welding, without preheating before welding, but need to control interlayer temperature below 100 ℃.Specific process is:1, the welding methodsAt present, the 9 ni steel can be adopted method of welding is mainly: electrode arc welding (SMAW), submerged arc welding (SAW).2, welding material,In order to obtain the superior performance of welded joint, to guarantee the weld has adapted to 9 Ni steel low-temperature toughness, the welding must use appropriate welding material in the production, according to the mass fraction of the Ni can be divided into: 1) more than 60% of Ni base type (Ni - Cr, Mo alloy);2) 40% Fe - Ni base type (Fe - Ni - Cr alloy).These two types of welding materials is the most suitable choice of 9 ni steel welding.3, welding curIndustry News September 22, 2016
- Casting process definition and classificationCasting is a metal humans master earlier hot working process, about 6000 years of history.China between 1700 ~ 1700 b.c. Has entered the heyday of bronze casting, craft has reached a quite high level.Defines how to foundry industry?Casting is a liquid metal casting to match the shape of parts with the casting cavity, after waiting for the cooling and solidification, for parts or method of blank.Was originally cast material for more solid but heated to liquid metal (example: copper, iron, aluminum, tin, lead, etc.), the materials of mold can be sand, metal and ceramics.According to different requirements, the use of the methods will also be different.Definition and classification is introduced in foundry industry are as follows.The casting industry definitionCasting industry market survey analysis, casting is a metal melting into meet certain requirements of the liquid is poured into the mold, after cooling solidification, men get a predetermined shape, size and performance of the castiIndustry News September 22, 2016
- Hematite magnetic separator drive for parsingHematite magnetic separator reducer has two types of similar structure, the transmission way looks compact structure, the structure is novel, the use of the reducer is advanced, but in fact use effect and economy are not ideal.1, hematite magnetic separator (or cycloidal reducer must be 45 ° ~ 50 ° inclined to decorate, the upper bearing for lack of lubrication, easy fever, accelerated wear and tear, vibration, so often burn out bearing, tend to cause downtime; lower input shaft due to poor dynamic sealing effect, install the seal, seal can fail after a period of running, leakage phenomenon, a large amount of waste lubricating oil, the scene of the pollution of the environment. Job requirements often add lubricating oil at the same time, increased maintenance workload and labor intensity.2, hematite magnetic separator technology difficulty, general small and medium-sized cement plant maintenance workers is very difficult, even able to cope with maintenance, often due to the maintenanceIndustry News September 21, 2016