Sintered Ferrite Magnet, hard ferrite, hard ferrite magnet is also called Ceramic Magnets. Ferrite Magnet Ferrite Magnet,Block Ferrite Magnet,Round Ferrite Magnet,Hard Sintered Disc Ferrite Magnet Jinyu Magnet (Ningbo) Co., Ltd. , http://www.magnetbonwin.com
1. Current For the ball mill, increasing the current is to increase the rotational speed, the rotational speed is high, and the working efficiency of the ball mill is naturally higher. However, it should be noted that increasing the current should be within the rated power range of the ball mill. If the current is too large, the mill will be burned.
2, the choice of raw material formulation formula should be appropriate, this can not only improve the strength of the ball, but also increase its weight, thereby increasing its inertia, so that the work efficiency of the ball mill has been improved to some extent.
3. The speed increase of the deceleration device is the only way to improve the working efficiency of the ball mill. Therefore, appropriate improvements to the deceleration device can also have a certain effect. Conditional concentrators can also choose to install the inverter to adjust the speed. Satisfactory results.
4, water in the amount of water in the ore has a certain influence on the working efficiency of the ball mill. Therefore, an appropriate increase in the moisture content of the ore in the grinding chamber can also increase the efficiency of the ball mill.
5, dispersant added dispersant can also improve the working efficiency of the ball mill to a certain extent.
6, Steel ball The ball is the main grinding medium of the ball mill. The specific gravity of the ball is large, and its impact is also great. The abrasion resistance of the steel ball is good, and if the hardness is high, the grinding force is strong. For the hard-to-grinding ore with large hardness and compact structure, a steel ball with a large specific gravity and a large size should be added. However, in order to effectively grind fine-grained ore and increase the number of hits per unit time, more small-sized steel balls are required.
The proportion, hardness, composition and toughness of the steel ball are the main technical indicators of the steel ball. The quality of the steel ball is reduced, the grinding effect is significantly reduced, and the ball unit consumption is increased. Therefore, high-quality brand steel balls, such as “Yangyang†brand high-quality and high-chromium balls, which are produced by open-source anti-abrasion products, should be selected. They have high hardness, good toughness, good wear resistance, and are available in a variety of sizes to meet ball mill requirements for different materials. Ore individual needs, more appropriate.
Sintered ferrite magnets are available in isotropic magnet and anisotropic magnets. The magnetic properties of isotropic ferrite are low. Since they have nearly the same magnetic properties in all directions, so isotropic ferrite magnets can be magnetized in many different directions or in multi-poles. Anisotropic ferrite magnets have better magnetic properties compare with isotropic ferrite magnets. However this type of magnets can only be magnetized along a preferred direction.
Permanent ferrite magnets are made of hard ferrites, which have a high coercivity and high remanence after magnetization. Iron oxide and barium or strontium carbonate are used in manufacturing of hard ferrite magnets. The high coercivity means the materials are very resistant to becoming demagnetized, an essential characteristic for a permanent magnet. They also have high magnetic permeability. These so-called ceramic magnets are cheap, and are widely used in household products such as refrigerator magnets. The maximum magnetic field B is about 0.35 tesla and the magnetic field strength H is about 30 to 160 kiloampere turns per meter (400 to 2000 oersteds). The density of ferrite magnets is about 5 g/cm3.
The most common hard ferrites are:
Strontium ferrite, SrFe12O19 (SrO·6Fe2O3), used in small electric motors, micro-wave devices, recording media, magneto-optic media, telecommunication and electronic industry.
Barium ferrite, BaFe12O19 (BaO·6Fe2O3), a common material for permanent magnet applications. Barium ferrites are robust ceramics that are generally stable to moisture and corrosion-resistant. They are used in e.g. loudspeaker magnets and as a medium for magnetic recording, e.g. on magnetic stripe cards.
Why choose Ferrite Magnet?
1. Low cost and low price.
The raw material cost is very cheap and manufacturing process is simple. So the price if it is very low.
2. Nice temperature stability
Ferrite magnets can be used in the working temperature from -40℃ to 200℃.
3. Well prevent corrosion
The raw material of sintered ferrite magnet is oxide, so ferrite magnets will not be rusted under severe environment nor affected by many chemicals.
For a concentrator, the efficiency of the ball mill directly affects the economics of the concentrator. Therefore, it is very important for the concentrator to increase the work efficiency of the ball mill. The efficiency of the ball mill is constrained by a number of factors, among which the quality of the wear-resistant steel ball, which is the main grinding medium for the ball mill, plays a key role.