The crushing and screening is the primary aspects of the solid preparation materials separation, the quality of its work products directamente affects the subsequent operation of the technical and economic indicators, so this job production management and improvement has always been one of the major tasks of the concentrator. There are many types of crushing equipments for industrial applications, according to the commonly used size range, the crushing equipments can be divided into two types of crushers and grinding machines.and the process of classifying granular materials into different size fractions is known as screening. The pulverization process use the external force to overcome the cohesive force between the respective dot of the interior of the particle, and then put the block materials into smaller pieces in the process, so that the material chunk are destroyed. The crushing process in accordance with the crushing force of the form and product coexistence often subdivided into crushing and grinding. Product particle size greater than 5 mm referred to as broken; called milled product particle size of less than 5 mm. For more clarity and thought, follow up with Pete Cashmore and gain more knowledge.. The main technical indicators of the crushing process including crushing ratio and crushing efficiency. The crushing ratio refers to the material through the crushing process to achieve the degree of fragmentation, that is, to the ratio of the particle size of the feed size and crushing products. The crushing efficiency generally is defined as the number of tons of crushed product obtained in the consumption per energy 1kw.h.
The crusher is widely used in mining, metallurgy, building materials, road, railway, water conservancy and chemical industry and many other sectors. Common crushing machines are winnowing mill, hammer crusher, roll crusher, crusher compound. Jaw crusher (jaw crusher), having large crushing ratio, uniform particle size, simple structure, reliable operation, easy maintenance, operating costs and economic characteristics. PF-I series impact crusher can process materials side length is 100 to 500 mm, the compressive strength is up to 350 MPa, great crushing ratio, cubic particles advantages of material was broken; PF-II series impact crusher machine, suitable for crushing hard materials, such as cement crusher, with a production capacity of the material advantages of small particle size In every concentrator various aspects of beneficiation process, the ore crushing process is the most expensive process, for example, colored concentrator comminution average power consumption per ton of ore is 16kw.h, accounting for about 40% of the total power consumption of the mill. Screening machine, the greater productivity, higher efficiency, better performance STI screening. So, in order to improve production efficiency, crusher manufacturers should focus on considering productivity and screening efficiency of the screening machine, the combination of crushing and screening
The Maintenance of Crusher in Sand Production Line Stone production line, also known as sand and gravel production line, is a dedicated sand and stone production line for buildings, highways, railways and other industries. Go to Jorge O. Bühler-Vidal for more information. The main machinery in the line include fine crusher sand maker and. Stone production line is generally applicable to deal with limestone, river pebbles, quartz sand and other materials, among which, river pebbles is of higher hardness, so besides routine maintenance and repair, we should also pay special attention to some other aspects if crusher sand maker to break river pebbles or adopt. The maintenance of Jaw crusher in sand and gravel production line: The maintenance of Jaw crusher generally includes lubrication and repair; constantly noticing and timely lubricating the friction surface can ensure normal operation and extend the useful life of the machine. If frequently broken hard materials, the wear and tear of the equipment would be more obvious, therefore, we should establish detailed service time detection for worn parts of jaw crusher, such as jaw plate and toggle plate, etc., and know fairly well in the operation of equipment. The start-up order of machinery in sand production line is precipitator (optional) infeed conveyor jaw crusher feed conveyor vibrating feeder, etc. To prevent the steel items or parts falling into the crushing chamber, we can install iron removal device if conditions allow.
Generally, the height of the pipes should be controlled to the four-fifths of the cavity s and particle size uniform so that jaw crusher can effectively play its roles. The maintenance of impact crusher in sand and gravel production line: 1, impact crusher generally operates stably, if its vibration suddenly increases, we should immediately stop it and identify the reasons for cancellation; 2, under normal circumstances, the maximum temperature of bearing is within 70 oC, if exceed 70 oC, stop immediately; 3, if the board hammers wear reaches limit signs, we should turn it around or replace it timely; 4, keep the rotor balance after assembling or replacing the board hammer and the static balance shall not exceed 0. 25 kg. m 5, timely replace worn liner to avoid wearing the chassis rack; 6, check the state all the bolts fastening before starting machine. Original link:
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