The jaw crusher is normally used as primary crusher. It is mostly suitable for hard materials and the wear cost are lower than the impact or cone crusher. The main difference is that you can get bigger productivity with the cone crusher by lower materials size as with the jaw crusher.
Impact stone crusher is used with soft materials, medi um to hard stones and medium hard metallic ores. The principles used for impact loading is the time for the natural frequency of the body is.
Crushers are machines that use a rigid surface to compress and break large rocks into smaller rocks.
The hard rock impact crusher RHSMKHCI stands for excellent material reduction and efficient operation. It is designed for applications with hard and tough rock and offers high operational reliability. Capacity range is between 130 - 450 th. In comparison to other impact crushers especially with hard materials longer working life is achieved due to thicker wear linings.
A jaw crusher consists essentially of two crushing plates, inclined to each other forming a horizontal opening by their lower borders. Material is crushed between a fixed and a movable plate by reciprocating pressure until the crushed product becomes small enough to pass through the gap between the crushing plates. Jaw crushers find a wide application for brittle materials. For example, they are used for comminution of porous copper cake.
A gyratory crusher includes a solid cone set on a revolving shaft and placed within a hollow body, which has conical or vertical sloping sides. Material is crushed when the crushing surfaces approach each other and the crushed products fall through the discharging opening.
Hammer crushers are used either as a one-step primary crusher or as a secondary crusher for products from a primary crusher. They are widely used for crushing of hard metal scrap for different hard metal recycling processes.
Pivoted hammers are pendulous, mounted on the horizontal axes symmetrically located along the perimeter of a rotor and crushing takes place by the impact of material pieces with the high speed moving hammers and by contact with breaker plates. A cylindrical grating or screen is placed beneath the rotor. Materials are reduced to a size small enough pass through the openings of the grating or screen. The size of product can be regulated by changing the spacing of the grate bars or the opening of the screen.
The feature of the hammer crushers is the appearance of elevated pressure of air in the discharging unit of the crusher and underpressure in the zone around of the shaft close to the inside surface of the body side walls. Thus, the hammer crushers also act as high-pressure forced-draught fans. This may lead to environmental pollution and product losses in fine powder fractions.
A design for a hammer crusher Figure 2.6 allows essentially a decrease of the elevated pressure of air in the crusher discharging unit 5. The A-zone beneath the screen is communicated through the hollow ribs and openings in the body side walls with the B-zone around the shaft close to the inside surface of body side walls. As a result, circulation of suspended matter in the gas between A- and B-zones is established and high pressure of air in the discharging unit of crusher is reduced.
Design and Construction of Rock Crushing Machine from Locally Sourced Materials for Indigenous Use Introduction Crushing is one of the preliminary stages in mineral processing from the ore. The process is required to reduce rocks and lumps to smaller pieces. Rollers or jaw crushers.
Thiscrusher is the finest of our lines of jaw crushers which we offer. Others include Superior, Type 8220B Blake, Fine-Reduction and Dodge sizes, 4 by 6 to 84 by 66 inches. A reciprocating machine, the crushes material in a straight line between jaws without grinding or rubbing surfaces.
As you compare this jaw crusher feature for feature with other makes youll see how this modern crusher lowers principal costspower consumption lubrication jaw plate, toggle plate and bearing wear youll understand why we say the crusher promises you a new low cost per ton of material crushed.
A jawcrusher is recommended for tough, abrasive, high compressive strength materials. Special machines have been designed for ores having compressive strength as high as 80,000 lbs per sq in.
Firstthose who have rock or ore tougher and more abrasive than most material. Secondthe operators whove had difficulty with other designs of crushers. And finallythe operators who naturally buy the bestexpecting their added investment to be written off in comparatively short time through lower operating and maintenance costs.
Compare the dimensions with those of conventional jaw crushers. It measures up to 20 longer has up to 35 deeper crushing chamber And while you naturally expect to pay more for this bigger,8220deluxe8221 crusher, it follows that you get more too For example.
You get a crushing chamber with full-width receiving opening increased capacity You get an acute crushing chamber that minimizes slippage very important with hard, tough materials. You cut down crushing power required through longer pitman and front toggle. You reduce packing, get closer setting through longer jaw, non-choking plates. You lower maintenance cost, get longer jaw plate, toggle and bearing life through lower structural stresses, simplified design.
Yes, adding these and more advantages, a new crusher gives you a lower cost per ton of material crushed than comparable crushers.
Frames of these crushers are built for maximum rigidity designed to prevent distortion during operation. Side members are heavy steel plate, reinforced by steel ribbing. End members are cast steel, of box section design, to provide maximum strength.
The side frames are deep-welded and then 8220stress-relieved in thehuge annealing furnaces to eliminate possible failure adjacent to welds. The result is a uniformly strong frame that will remain true during the long service life of the crusher.
Ajaw crusher frames are of sectionalized construction to facilitate handling. This design minimizes heavy lifts makes the crusher suitable for installations where parts must be passed down a shaft or through a tunnel. End members are attached between side members with vertical tongue and groove joints and held together with fitted bolts. Long bearing surfaces prevent angular distortion.
Rock crushers have a wide range of suitable material to choose from, whether its soft or hard, or even very hard, rock crushers can reduce those large rocks into smaller rocks, gravel, or even rock dust.
All rock crushers can be classified as falling into two main groups. Compressive crushers that press the material until it breaks, and impact crushers using the principle of quick impacts to crush the material. Jaw crushers, gyratory crushers, and cone operate according to the compression principle.
The impact crusher is widely used for sand and rock fine crushing in the industry of roads, railways, reservoir, electricity power and building materials and so on. And the compressive strength less than 350 MPa. 3. Working Principle Jaw rock crusher does cyclical movement by swinging jaw to crusher rock.
Breaks oversized rocks before they enter the primary crusher.
The Rock breaker can be operated from a safe distance with remote control.
Safe way to manage blockages and build-ups and to clear the crusher cavity.
Metso rock breaker is a solution for primary crushing applications. They are most commonly used to break oversized rocks on top of the crusher cavity, to move single rocks which are stuck somewhere or to break build-ups caused by multiple coarse but not necessarily oversized rocks. Rock breakers are typically used to support the primary crusher, either jaw crushers or primary gyratories. Rock breakers can also be used to crush oversized boulders on top of the grids or grizzlies or to assist material flow in chute works or other possible challenging places in crushing processes.
Metso rock breakers consist of following components breaker boom, impact hammer, hydraulic power unit and radio remote control. Metso rock breakers are engineered and built tough for the demanding primary crushing applications to meet the same requirements as the crushers.
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