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Canadian Industry Statistics (CIS) analyses industry data on many economic indicators using the most recent data from Statistics Canada. CIS looks at industry trends and financial information, such as GDP, Labour Productivity, Manufacturing and Trade data
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The approximate running costs for crushing plants of different capacities up to 4,000 tons per day on the basis of an eight-hour crushing day are easy to calculate. The figures must be regarded only as a rough guide to the average costs of modern installations ; they are direct costs and include no overhead charges
It is assumed that power is charged to the plant at the rate of 0.75d. per kilowatt-hour in the case of the smallest plant, decreasing as the capacity increases to a minimum of 0.5d. per kw.-hr. for the largest. The power consumption of a machine or installation is usually expressed in kw.-hours per ton as being the most convenient method
In every case the power consumption is in excess of the figure that would be obtained by totalling the power requirement of each individual machine when running at full load for the whole eight hours, the reason being that a crushing plant can very seldom be kept working at full capacity all the time ; if it could, the power consumed would be at least 25% under the figures given. It is time lost when the machines are running at less than full load that brings up the power costs
The power cost falls as the size of the plant increases up to a capacity of about 2,000 tons per day on account of the fact that large machines are more economical as regards power up to a capacity of about 250 tons per hour ; single machines are made to handle greater tonnages than this, but their power consumption per ton crushed shows no appreciable saving
The labour cost is the largest item in small and medium plants. This is one reason for the modern tendency towards a larger ratio of reduction in the minimum number of crushing stages, since the simplification of the layout that results reduces the cost of operating and maintenance labour considerably, besides that of power and supplies. As was explained in the previous paragraph, the mine output, if it does not exceed 2,000 tons per day, is usually crushed in one shift in order to reduce the cost of labour, since two shifts require double the number of men for the same output
The wear on the liners of the crushing machines accounts for less than half of the cost of supplies. With manganese steel liners the steel consumption can be relied upon never to exceed 0.1 lb. per ton crushed for any of the machines described in this chapter, and as a rule it is considerably less. General wear and tear of the accessory plant and accidental breakage due to the very rough nature of the work that the machines have to perform is responsible for most of the cost of supplies ; lubrication and routine replacement of worn parts other than liners are not costly items
The history of mining industry is as long as human civilization. At the beginning, mining industry was growing very slowly, it is mainly support by human power, and there are not so many types of mining equipment. With the development of mining industry, more and more mineral resources are exploited, the increasing number of stone quarries and mining plants are established all over the world. Crushing is the primary and integral stage in mining operation. Crushing plant is important for mining industry. With the mining technology development, high advanced stone crushing plant are developed, especially portable stone crusher machine, which is gradually replacing traditional stationary crushing equipment
Stone crushing plant industry has long history.At early time, crushers are machines which use a metal surface to break or compress materials into small fractional chunks or denser masses. Then, many different types of crushing plants are developed with various working principle, producing different particle size and applying in different crushing applications. Portable stone crusher machine is new types of crushing equipment, which is completely mobile and flexible for modern crushing requirements for recycling, construction, quarrying, and mining applications
The main advantage of portable stone crushing machine is their ability to maximize productivity and reduce operating costs. The mobile stone crushing machine can be positioned close to the working face and then relocated under its own power in as little as 20min. The potential cost savings arising from the use of a mobile crushing and conveying system based at the rock face can be significant. SBM is world leading stone crushing equipment supplier and manufacturer; we provide complete series of portable stone crushing machine for sale
Mobile Jaw Crusher Plant The mobile or portable jaw crushers combine a high reduction ratio and increased capacity with any feed materials: from extra hard rock to recycled materials. Mobile jaw crusher plant price is reasonable for customers all over the world
The excellent performance of the mobile jaw crusher is achieved through several unique features such as higher crushing ratio, optimized engineering, and easy adjustment. The jaw crushers are equipped with a proven, rugged and fast wedge-setting adjustment system and available as manual or hydraulic alternatives
Portable Impact Crusher The impact crushers are based upon more than 40 years of experience with the impact method. We offer a complete range of impact crushers for stationary, semi-mobile fully mobile applications in both primary and secondary crushing
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